./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy10.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/test-easy10.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 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:54:27,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:54:27,371 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:54:27,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:54:27,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:54:27,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:54:27,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:54:27,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:54:27,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:54:27,409 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:54:27,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:54:27,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:54:27,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:54:27,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:54:27,410 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:54:27,411 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:54:27,411 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:54:27,411 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:54:27,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:54:27,412 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:54:27,412 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:54:27,413 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:54:27,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:54:27,413 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:54:27,413 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:54:27,414 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:54:27,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:54:27,414 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:54:27,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:54:27,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:54:27,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:54:27,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:54:27,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:54:27,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:54:27,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:54:27,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:54:27,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:54:27,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:54:27,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:54:27,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:54:27,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:54:27,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:54:27,421 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 [2024-11-22 13:54:27,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:54:27,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:54:27,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:54:27,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:54:27,636 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:54:27,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-11-22 13:54:28,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:54:29,086 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:54:29,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-11-22 13:54:29,092 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c944b47b/a7de79e07f6d4175ac75f296241efabe/FLAGab7ca0f83 [2024-11-22 13:54:29,102 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c944b47b/a7de79e07f6d4175ac75f296241efabe [2024-11-22 13:54:29,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:54:29,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:54:29,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:54:29,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:54:29,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:54:29,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aed2757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29, skipping insertion in model container [2024-11-22 13:54:29,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:54:29,278 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/test-easy10.wvr.c[2547,2560] [2024-11-22 13:54:29,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:54:29,291 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:54:29,337 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/test-easy10.wvr.c[2547,2560] [2024-11-22 13:54:29,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:54:29,355 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:54:29,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29 WrapperNode [2024-11-22 13:54:29,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:54:29,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:54:29,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:54:29,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:54:29,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,425 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 147 [2024-11-22 13:54:29,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:54:29,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:54:29,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:54:29,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:54:29,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,454 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 13:54:29,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:54:29,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:54:29,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:54:29,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:54:29,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (1/1) ... [2024-11-22 13:54:29,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:54:29,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:29,507 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 13:54:29,515 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 13:54:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:54:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:54:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:54:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:54:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:54:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:54:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:54:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-22 13:54:29,553 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-22 13:54:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:54:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:54:29,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:54:29,554 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 13:54:29,641 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:54:29,643 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:54:29,807 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:54:29,808 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:54:29,917 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:54:29,918 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 13:54:29,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:54:29 BoogieIcfgContainer [2024-11-22 13:54:29,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:54:29,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:54:29,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:54:29,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:54:29,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:54:29" (1/3) ... [2024-11-22 13:54:29,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706a3191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:54:29, skipping insertion in model container [2024-11-22 13:54:29,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:29" (2/3) ... [2024-11-22 13:54:29,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706a3191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:54:29, skipping insertion in model container [2024-11-22 13:54:29,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:54:29" (3/3) ... [2024-11-22 13:54:29,924 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2024-11-22 13:54:29,943 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:54:29,946 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:54:29,946 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:54:30,002 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 13:54:30,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 60 transitions, 148 flow [2024-11-22 13:54:30,053 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2024-11-22 13:54:30,053 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 13:54:30,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 56 events. 0/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-22 13:54:30,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 60 transitions, 148 flow [2024-11-22 13:54:30,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 55 transitions, 134 flow [2024-11-22 13:54:30,063 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:54:30,068 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;@61263903, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:54:30,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-22 13:54:30,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:54:30,080 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2024-11-22 13:54:30,081 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 13:54:30,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:30,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:30,082 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 2 more)] === [2024-11-22 13:54:30,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:30,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1956989108, now seen corresponding path program 1 times [2024-11-22 13:54:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:30,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79536421] [2024-11-22 13:54:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:30,570 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 13:54:30,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:30,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79536421] [2024-11-22 13:54:30,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79536421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:30,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:30,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:54:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890873402] [2024-11-22 13:54:30,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:30,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:54:30,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:30,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:54:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:54:30,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 60 [2024-11-22 13:54:30,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 13:54:30,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:30,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 60 [2024-11-22 13:54:30,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:30,810 INFO L124 PetriNetUnfolderBase]: 597/1149 cut-off events. [2024-11-22 13:54:30,810 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-22 13:54:30,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1149 events. 597/1149 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7045 event pairs, 142 based on Foata normal form. 25/1126 useless extension candidates. Maximal degree in co-relation 2084. Up to 853 conditions per place. [2024-11-22 13:54:30,823 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 34 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-22 13:54:30,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 230 flow [2024-11-22 13:54:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:54:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:54:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-11-22 13:54:30,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7388888888888889 [2024-11-22 13:54:30,837 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 134 flow. Second operand 3 states and 133 transitions. [2024-11-22 13:54:30,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 230 flow [2024-11-22 13:54:30,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 210 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-22 13:54:30,849 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 126 flow [2024-11-22 13:54:30,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-11-22 13:54:30,853 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-22 13:54:30,855 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 126 flow [2024-11-22 13:54:30,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 13:54:30,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:30,857 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:30,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:54:30,857 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 2 more)] === [2024-11-22 13:54:30,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash -211321158, now seen corresponding path program 2 times [2024-11-22 13:54:30,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:30,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198021515] [2024-11-22 13:54:30,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:30,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:30,883 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:54:30,884 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:31,000 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 13:54:31,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198021515] [2024-11-22 13:54:31,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198021515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:31,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:31,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:54:31,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127940414] [2024-11-22 13:54:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:31,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:54:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:54:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:54:31,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 60 [2024-11-22 13:54:31,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 13:54:31,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:31,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 60 [2024-11-22 13:54:31,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:31,136 INFO L124 PetriNetUnfolderBase]: 507/1023 cut-off events. [2024-11-22 13:54:31,136 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-11-22 13:54:31,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 1023 events. 507/1023 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5972 event pairs, 156 based on Foata normal form. 25/1007 useless extension candidates. Maximal degree in co-relation 1864. Up to 645 conditions per place. [2024-11-22 13:54:31,143 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-11-22 13:54:31,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 212 flow [2024-11-22 13:54:31,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:54:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:54:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-22 13:54:31,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7277777777777777 [2024-11-22 13:54:31,144 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 126 flow. Second operand 3 states and 131 transitions. [2024-11-22 13:54:31,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 212 flow [2024-11-22 13:54:31,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:54:31,146 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 130 flow [2024-11-22 13:54:31,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-22 13:54:31,146 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-11-22 13:54:31,147 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 130 flow [2024-11-22 13:54:31,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 13:54:31,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:31,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:31,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:54:31,149 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 2 more)] === [2024-11-22 13:54:31,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash -214292212, now seen corresponding path program 3 times [2024-11-22 13:54:31,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:31,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87985359] [2024-11-22 13:54:31,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:31,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:31,174 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:54:31,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:31,274 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 13:54:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:31,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87985359] [2024-11-22 13:54:31,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87985359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:31,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:31,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:54:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183205803] [2024-11-22 13:54:31,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:31,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:54:31,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:54:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:54:31,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 60 [2024-11-22 13:54:31,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 13:54:31,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:31,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 60 [2024-11-22 13:54:31,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:31,386 INFO L124 PetriNetUnfolderBase]: 507/985 cut-off events. [2024-11-22 13:54:31,388 INFO L125 PetriNetUnfolderBase]: For 117/121 co-relation queries the response was YES. [2024-11-22 13:54:31,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 985 events. 507/985 cut-off events. For 117/121 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5680 event pairs, 122 based on Foata normal form. 20/977 useless extension candidates. Maximal degree in co-relation 1641. Up to 733 conditions per place. [2024-11-22 13:54:31,394 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 36 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-22 13:54:31,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 233 flow [2024-11-22 13:54:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:54:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:54:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-22 13:54:31,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-22 13:54:31,396 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 130 flow. Second operand 3 states and 135 transitions. [2024-11-22 13:54:31,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 233 flow [2024-11-22 13:54:31,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:54:31,399 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 134 flow [2024-11-22 13:54:31,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-22 13:54:31,400 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2024-11-22 13:54:31,400 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 134 flow [2024-11-22 13:54:31,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 13:54:31,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:31,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:31,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:54:31,401 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 2 more)] === [2024-11-22 13:54:31,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:31,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2104338960, now seen corresponding path program 4 times [2024-11-22 13:54:31,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:31,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436901110] [2024-11-22 13:54:31,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:54:31,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:31,425 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:54:31,425 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:31,511 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 13:54:31,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436901110] [2024-11-22 13:54:31,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436901110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:31,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:31,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:54:31,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069694810] [2024-11-22 13:54:31,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:31,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:54:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:31,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:54:31,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:54:31,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 60 [2024-11-22 13:54:31,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 13:54:31,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:31,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 60 [2024-11-22 13:54:31,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:31,603 INFO L124 PetriNetUnfolderBase]: 549/1083 cut-off events. [2024-11-22 13:54:31,604 INFO L125 PetriNetUnfolderBase]: For 251/269 co-relation queries the response was YES. [2024-11-22 13:54:31,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 1083 events. 549/1083 cut-off events. For 251/269 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6281 event pairs, 156 based on Foata normal form. 14/1046 useless extension candidates. Maximal degree in co-relation 2164. Up to 705 conditions per place. [2024-11-22 13:54:31,609 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 34 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-22 13:54:31,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 231 flow [2024-11-22 13:54:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:54:31,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:54:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-11-22 13:54:31,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7388888888888889 [2024-11-22 13:54:31,611 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 134 flow. Second operand 3 states and 133 transitions. [2024-11-22 13:54:31,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 231 flow [2024-11-22 13:54:31,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 227 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:54:31,613 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 138 flow [2024-11-22 13:54:31,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-11-22 13:54:31,613 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2024-11-22 13:54:31,614 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 138 flow [2024-11-22 13:54:31,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 13:54:31,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:31,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:31,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:54:31,614 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 2 more)] === [2024-11-22 13:54:31,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1404001800, now seen corresponding path program 5 times [2024-11-22 13:54:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:31,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612309845] [2024-11-22 13:54:31,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:54:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:31,743 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:54:31,743 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:33,128 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 13:54:33,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:33,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612309845] [2024-11-22 13:54:33,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612309845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:33,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:33,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 13:54:33,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954417192] [2024-11-22 13:54:33,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:33,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:54:33,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:33,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:54:33,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:54:33,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2024-11-22 13:54:33,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 138 flow. Second operand has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 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 13:54:33,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:33,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2024-11-22 13:54:33,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:35,717 INFO L124 PetriNetUnfolderBase]: 15512/22322 cut-off events. [2024-11-22 13:54:35,717 INFO L125 PetriNetUnfolderBase]: For 3889/3889 co-relation queries the response was YES. [2024-11-22 13:54:35,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48416 conditions, 22322 events. 15512/22322 cut-off events. For 3889/3889 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 131223 event pairs, 2112 based on Foata normal form. 1/22315 useless extension candidates. Maximal degree in co-relation 20942. Up to 6001 conditions per place. [2024-11-22 13:54:35,807 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 214 selfloop transitions, 15 changer transitions 18/256 dead transitions. [2024-11-22 13:54:35,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 256 transitions, 1119 flow [2024-11-22 13:54:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:54:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:54:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 443 transitions. [2024-11-22 13:54:35,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4922222222222222 [2024-11-22 13:54:35,809 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 138 flow. Second operand 15 states and 443 transitions. [2024-11-22 13:54:35,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 256 transitions, 1119 flow [2024-11-22 13:54:35,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 256 transitions, 1115 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:54:35,812 INFO L231 Difference]: Finished difference. Result has 89 places, 66 transitions, 235 flow [2024-11-22 13:54:35,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=235, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2024-11-22 13:54:35,813 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2024-11-22 13:54:35,813 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 235 flow [2024-11-22 13:54:35,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 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 13:54:35,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:35,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:35,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:54:35,814 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 2 more)] === [2024-11-22 13:54:35,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1577836536, now seen corresponding path program 6 times [2024-11-22 13:54:35,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:35,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602629170] [2024-11-22 13:54:35,815 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:54:35,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:35,854 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:54:35,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:37,549 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 13:54:37,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:37,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602629170] [2024-11-22 13:54:37,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602629170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:37,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:37,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 13:54:37,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141315692] [2024-11-22 13:54:37,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:37,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:54:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:54:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:54:37,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2024-11-22 13:54:37,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 235 flow. Second operand has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 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 13:54:37,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:37,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2024-11-22 13:54:37,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:42,955 INFO L124 PetriNetUnfolderBase]: 44972/65046 cut-off events. [2024-11-22 13:54:42,955 INFO L125 PetriNetUnfolderBase]: For 46767/46767 co-relation queries the response was YES. [2024-11-22 13:54:43,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174370 conditions, 65046 events. 44972/65046 cut-off events. For 46767/46767 co-relation queries the response was YES. Maximal size of possible extension queue 1922. Compared 446513 event pairs, 7165 based on Foata normal form. 1/65040 useless extension candidates. Maximal degree in co-relation 174188. Up to 16978 conditions per place. [2024-11-22 13:54:43,459 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 264 selfloop transitions, 27 changer transitions 10/310 dead transitions. [2024-11-22 13:54:43,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 310 transitions, 1737 flow [2024-11-22 13:54:43,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:54:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:54:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 448 transitions. [2024-11-22 13:54:43,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-11-22 13:54:43,462 INFO L175 Difference]: Start difference. First operand has 89 places, 66 transitions, 235 flow. Second operand 15 states and 448 transitions. [2024-11-22 13:54:43,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 310 transitions, 1737 flow [2024-11-22 13:54:44,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 310 transitions, 1695 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-22 13:54:44,222 INFO L231 Difference]: Finished difference. Result has 109 places, 86 transitions, 469 flow [2024-11-22 13:54:44,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=469, PETRI_PLACES=109, PETRI_TRANSITIONS=86} [2024-11-22 13:54:44,222 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2024-11-22 13:54:44,223 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 86 transitions, 469 flow [2024-11-22 13:54:44,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 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 13:54:44,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:44,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:44,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:54:44,223 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-22 13:54:44,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1144622834, now seen corresponding path program 7 times [2024-11-22 13:54:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:44,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579117423] [2024-11-22 13:54:44,224 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:54:44,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:45,890 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 13:54:45,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:45,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579117423] [2024-11-22 13:54:45,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579117423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:45,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:45,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 13:54:45,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009445520] [2024-11-22 13:54:45,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:45,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:54:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:45,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:54:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:54:45,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2024-11-22 13:54:45,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 86 transitions, 469 flow. Second operand has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 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 13:54:45,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:45,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2024-11-22 13:54:45,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:56,089 INFO L124 PetriNetUnfolderBase]: 82077/119021 cut-off events. [2024-11-22 13:54:56,089 INFO L125 PetriNetUnfolderBase]: For 206087/206087 co-relation queries the response was YES. [2024-11-22 13:54:57,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369923 conditions, 119021 events. 82077/119021 cut-off events. For 206087/206087 co-relation queries the response was YES. Maximal size of possible extension queue 3719. Compared 890610 event pairs, 15472 based on Foata normal form. 1/119016 useless extension candidates. Maximal degree in co-relation 369503. Up to 31426 conditions per place. [2024-11-22 13:54:57,407 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 303 selfloop transitions, 41 changer transitions 10/363 dead transitions. [2024-11-22 13:54:57,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 363 transitions, 2556 flow [2024-11-22 13:54:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:54:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:54:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 454 transitions. [2024-11-22 13:54:57,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2024-11-22 13:54:57,410 INFO L175 Difference]: Start difference. First operand has 109 places, 86 transitions, 469 flow. Second operand 15 states and 454 transitions. [2024-11-22 13:54:57,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 363 transitions, 2556 flow [2024-11-22 13:55:00,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 363 transitions, 2498 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-11-22 13:55:00,936 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 940 flow [2024-11-22 13:55:00,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=940, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-11-22 13:55:00,937 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 63 predicate places. [2024-11-22 13:55:00,937 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 940 flow [2024-11-22 13:55:00,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 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 13:55:00,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:00,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:00,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:55:00,938 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-22 13:55:00,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:00,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1333237722, now seen corresponding path program 8 times [2024-11-22 13:55:00,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:00,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389168457] [2024-11-22 13:55:00,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:00,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:00,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:55:00,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:01,998 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 13:55:01,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:01,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389168457] [2024-11-22 13:55:01,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389168457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:01,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:55:01,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 13:55:01,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668891948] [2024-11-22 13:55:01,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:01,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:55:02,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:02,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:55:02,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:55:02,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2024-11-22 13:55:02,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 940 flow. Second operand has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 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 13:55:02,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:02,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2024-11-22 13:55:02,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand