./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-difference-det.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 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:45:46,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:45:46,350 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:45:46,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:45:46,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:45:46,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:45:46,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:45:46,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:45:46,378 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:45:46,379 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:45:46,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:45:46,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:45:46,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:45:46,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:45:46,380 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:45:46,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:45:46,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:45:46,382 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:45:46,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:45:46,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:45:46,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:45:46,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:45:46,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:45:46,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:45:46,386 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:45:46,386 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:45:46,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:45:46,387 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:45:46,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:45:46,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:45:46,387 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:45:46,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:45:46,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:45:46,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:45:46,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:45:46,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:45:46,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:45:46,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:45:46,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:45:46,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:45:46,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:45:46,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:45:46,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-09 02:45:46,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:45:46,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:45:46,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:45:46,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:45:46,653 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:45:46,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-09 02:45:48,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:45:48,297 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:45:48,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-09 02:45:48,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee19515d4/77f69b442a0842a5846c7f15516f0ab8/FLAG8973805c1 [2024-11-09 02:45:48,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee19515d4/77f69b442a0842a5846c7f15516f0ab8 [2024-11-09 02:45:48,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:45:48,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:45:48,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:45:48,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:45:48,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:45:48,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223b2f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48, skipping insertion in model container [2024-11-09 02:45:48,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,357 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:45:48,562 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-09 02:45:48,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:45:48,577 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:45:48,594 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-09 02:45:48,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:45:48,612 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:45:48,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48 WrapperNode [2024-11-09 02:45:48,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:45:48,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:45:48,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:45:48,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:45:48,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,643 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2024-11-09 02:45:48,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:45:48,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:45:48,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:45:48,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:45:48,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,656 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,674 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]. [2024-11-09 02:45:48,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:45:48,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:45:48,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:45:48,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:45:48,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (1/1) ... [2024-11-09 02:45:48,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:45:48,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:48,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:45:48,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:45:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:45:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:45:48,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:45:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:45:48,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:45:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:45:48,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:45:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 02:45:48,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 02:45:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:45:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:45:48,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:45:48,855 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:45:48,965 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:45:48,969 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:45:49,191 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:45:49,191 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:45:49,325 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:45:49,326 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 02:45:49,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:45:49 BoogieIcfgContainer [2024-11-09 02:45:49,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:45:49,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:45:49,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:45:49,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:45:49,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:45:48" (1/3) ... [2024-11-09 02:45:49,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cbaf9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:45:49, skipping insertion in model container [2024-11-09 02:45:49,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:48" (2/3) ... [2024-11-09 02:45:49,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cbaf9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:45:49, skipping insertion in model container [2024-11-09 02:45:49,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:45:49" (3/3) ... [2024-11-09 02:45:49,335 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-09 02:45:49,347 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:45:49,347 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:45:49,348 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:45:49,407 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 02:45:49,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-09 02:45:49,467 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-09 02:45:49,468 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:45:49,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-09 02:45:49,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-09 02:45:49,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-09 02:45:49,487 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:45:49,497 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;@2a487257, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:45:49,498 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:45:49,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:45:49,516 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-09 02:45:49,516 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:45:49,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:49,517 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] [2024-11-09 02:45:49,517 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)] === [2024-11-09 02:45:49,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash 419504288, now seen corresponding path program 1 times [2024-11-09 02:45:49,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:49,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304495554] [2024-11-09 02:45:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:49,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304495554] [2024-11-09 02:45:49,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304495554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:49,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:49,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:45:49,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349523106] [2024-11-09 02:45:49,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:49,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:45:49,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:45:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:45:49,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:45:49,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:49,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:49,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:45:49,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:50,633 INFO L124 PetriNetUnfolderBase]: 4206/5690 cut-off events. [2024-11-09 02:45:50,634 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2024-11-09 02:45:50,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 5690 events. 4206/5690 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24102 event pairs, 1080 based on Foata normal form. 1/5300 useless extension candidates. Maximal degree in co-relation 10315. Up to 4714 conditions per place. [2024-11-09 02:45:50,681 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-09 02:45:50,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-09 02:45:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:45:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:45:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-09 02:45:50,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-11-09 02:45:50,696 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 77 transitions. [2024-11-09 02:45:50,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-09 02:45:50,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-09 02:45:50,712 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-09 02:45:50,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-09 02:45:50,720 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-09 02:45:50,720 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-09 02:45:50,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:50,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:50,721 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] [2024-11-09 02:45:50,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:45:50,722 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)] === [2024-11-09 02:45:50,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:50,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1938485262, now seen corresponding path program 1 times [2024-11-09 02:45:50,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:50,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558226698] [2024-11-09 02:45:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:50,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:50,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:50,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558226698] [2024-11-09 02:45:50,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558226698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:50,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:50,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:45:50,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479669715] [2024-11-09 02:45:50,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:50,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:45:50,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:45:50,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:45:50,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-09 02:45:50,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:50,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:50,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-09 02:45:50,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:51,992 INFO L124 PetriNetUnfolderBase]: 8890/11757 cut-off events. [2024-11-09 02:45:51,993 INFO L125 PetriNetUnfolderBase]: For 1383/1408 co-relation queries the response was YES. [2024-11-09 02:45:52,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26035 conditions, 11757 events. 8890/11757 cut-off events. For 1383/1408 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55838 event pairs, 2934 based on Foata normal form. 0/11130 useless extension candidates. Maximal degree in co-relation 3736. Up to 6812 conditions per place. [2024-11-09 02:45:52,062 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 89 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2024-11-09 02:45:52,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 101 transitions, 464 flow [2024-11-09 02:45:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:45:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:45:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-09 02:45:52,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-09 02:45:52,066 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 125 transitions. [2024-11-09 02:45:52,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 101 transitions, 464 flow [2024-11-09 02:45:52,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:52,071 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 156 flow [2024-11-09 02:45:52,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-09 02:45:52,072 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-09 02:45:52,072 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 156 flow [2024-11-09 02:45:52,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:52,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:52,073 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] [2024-11-09 02:45:52,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:45:52,074 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)] === [2024-11-09 02:45:52,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:52,075 INFO L85 PathProgramCache]: Analyzing trace with hash 725134442, now seen corresponding path program 2 times [2024-11-09 02:45:52,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:52,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467049038] [2024-11-09 02:45:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:52,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:52,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:52,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467049038] [2024-11-09 02:45:52,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467049038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:52,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709147639] [2024-11-09 02:45:52,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:45:52,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:52,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:52,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:52,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:45:52,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:45:52,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:52,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 02:45:52,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:52,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:52,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709147639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:52,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:52,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-09 02:45:52,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699787339] [2024-11-09 02:45:52,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:52,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 02:45:52,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:52,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 02:45:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:45:52,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-09 02:45:52,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:52,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:52,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-09 02:45:52,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:54,482 INFO L124 PetriNetUnfolderBase]: 15902/20779 cut-off events. [2024-11-09 02:45:54,483 INFO L125 PetriNetUnfolderBase]: For 6700/6700 co-relation queries the response was YES. [2024-11-09 02:45:54,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53356 conditions, 20779 events. 15902/20779 cut-off events. For 6700/6700 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 100699 event pairs, 1195 based on Foata normal form. 354/21133 useless extension candidates. Maximal degree in co-relation 27004. Up to 3779 conditions per place. [2024-11-09 02:45:54,593 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 245 selfloop transitions, 35 changer transitions 1/282 dead transitions. [2024-11-09 02:45:54,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 282 transitions, 1380 flow [2024-11-09 02:45:54,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:45:54,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:45:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 338 transitions. [2024-11-09 02:45:54,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-11-09 02:45:54,597 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 156 flow. Second operand 14 states and 338 transitions. [2024-11-09 02:45:54,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 282 transitions, 1380 flow [2024-11-09 02:45:54,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 282 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:45:54,612 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 389 flow [2024-11-09 02:45:54,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=389, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2024-11-09 02:45:54,614 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-11-09 02:45:54,614 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 389 flow [2024-11-09 02:45:54,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:54,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:54,615 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] [2024-11-09 02:45:54,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:45:54,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:54,816 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)] === [2024-11-09 02:45:54,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:54,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1244700002, now seen corresponding path program 1 times [2024-11-09 02:45:54,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:54,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649012704] [2024-11-09 02:45:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:54,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:54,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649012704] [2024-11-09 02:45:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649012704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:54,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:54,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:45:54,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054189872] [2024-11-09 02:45:54,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:54,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:45:54,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:54,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:45:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:45:54,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-09 02:45:54,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:54,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:54,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-09 02:45:54,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:56,457 INFO L124 PetriNetUnfolderBase]: 13851/18340 cut-off events. [2024-11-09 02:45:56,457 INFO L125 PetriNetUnfolderBase]: For 21244/21244 co-relation queries the response was YES. [2024-11-09 02:45:56,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55514 conditions, 18340 events. 13851/18340 cut-off events. For 21244/21244 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 91058 event pairs, 4183 based on Foata normal form. 36/18373 useless extension candidates. Maximal degree in co-relation 49455. Up to 9229 conditions per place. [2024-11-09 02:45:56,575 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 101 selfloop transitions, 12 changer transitions 15/132 dead transitions. [2024-11-09 02:45:56,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 824 flow [2024-11-09 02:45:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:45:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:45:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-09 02:45:56,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-09 02:45:56,577 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 389 flow. Second operand 5 states and 126 transitions. [2024-11-09 02:45:56,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 824 flow [2024-11-09 02:45:56,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 132 transitions, 791 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:56,848 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 394 flow [2024-11-09 02:45:56,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2024-11-09 02:45:56,849 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-11-09 02:45:56,849 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 394 flow [2024-11-09 02:45:56,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:56,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:56,851 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] [2024-11-09 02:45:56,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:45:56,852 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)] === [2024-11-09 02:45:56,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:56,852 INFO L85 PathProgramCache]: Analyzing trace with hash -411913122, now seen corresponding path program 3 times [2024-11-09 02:45:56,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:56,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777146807] [2024-11-09 02:45:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:56,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:56,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:56,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777146807] [2024-11-09 02:45:56,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777146807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:56,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104627159] [2024-11-09 02:45:56,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:45:56,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:56,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:56,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:56,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:45:57,051 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:45:57,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:57,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 02:45:57,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:57,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:57,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104627159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:57,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:57,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-09 02:45:57,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923256499] [2024-11-09 02:45:57,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:57,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:45:57,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:57,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:45:57,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:45:57,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-09 02:45:57,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:57,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:57,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-09 02:45:57,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:59,112 INFO L124 PetriNetUnfolderBase]: 22518/29285 cut-off events. [2024-11-09 02:45:59,112 INFO L125 PetriNetUnfolderBase]: For 42913/42913 co-relation queries the response was YES. [2024-11-09 02:45:59,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88459 conditions, 29285 events. 22518/29285 cut-off events. For 42913/42913 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 140675 event pairs, 4743 based on Foata normal form. 438/29723 useless extension candidates. Maximal degree in co-relation 72610. Up to 9338 conditions per place. [2024-11-09 02:45:59,313 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 156 selfloop transitions, 46 changer transitions 0/203 dead transitions. [2024-11-09 02:45:59,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 203 transitions, 1291 flow [2024-11-09 02:45:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:45:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:45:59,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-11-09 02:45:59,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603125 [2024-11-09 02:45:59,315 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 394 flow. Second operand 8 states and 193 transitions. [2024-11-09 02:45:59,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 203 transitions, 1291 flow [2024-11-09 02:45:59,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 203 transitions, 1250 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-09 02:45:59,744 INFO L231 Difference]: Finished difference. Result has 77 places, 98 transitions, 686 flow [2024-11-09 02:45:59,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=77, PETRI_TRANSITIONS=98} [2024-11-09 02:45:59,745 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-11-09 02:45:59,746 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 98 transitions, 686 flow [2024-11-09 02:45:59,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:59,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:59,747 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] [2024-11-09 02:45:59,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:45:59,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:59,948 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)] === [2024-11-09 02:45:59,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash -151783974, now seen corresponding path program 4 times [2024-11-09 02:45:59,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:59,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219757654] [2024-11-09 02:45:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:59,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:00,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219757654] [2024-11-09 02:46:00,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219757654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:00,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:00,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:46:00,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550293449] [2024-11-09 02:46:00,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:00,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:46:00,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:00,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:46:00,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:46:00,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-09 02:46:00,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:00,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:00,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-09 02:46:00,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:01,816 INFO L124 PetriNetUnfolderBase]: 21351/28348 cut-off events. [2024-11-09 02:46:01,817 INFO L125 PetriNetUnfolderBase]: For 52148/52301 co-relation queries the response was YES. [2024-11-09 02:46:01,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92620 conditions, 28348 events. 21351/28348 cut-off events. For 52148/52301 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 147316 event pairs, 7442 based on Foata normal form. 73/28319 useless extension candidates. Maximal degree in co-relation 72953. Up to 13272 conditions per place. [2024-11-09 02:46:02,160 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 110 selfloop transitions, 19 changer transitions 10/157 dead transitions. [2024-11-09 02:46:02,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 157 transitions, 1196 flow [2024-11-09 02:46:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:46:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:46:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-09 02:46:02,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-11-09 02:46:02,162 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 686 flow. Second operand 5 states and 118 transitions. [2024-11-09 02:46:02,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 157 transitions, 1196 flow [2024-11-09 02:46:02,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 157 transitions, 1174 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-09 02:46:02,585 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 711 flow [2024-11-09 02:46:02,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=711, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2024-11-09 02:46:02,586 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2024-11-09 02:46:02,586 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 711 flow [2024-11-09 02:46:02,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:02,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:02,587 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] [2024-11-09 02:46:02,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:46:02,587 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)] === [2024-11-09 02:46:02,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1062235910, now seen corresponding path program 2 times [2024-11-09 02:46:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:02,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551019982] [2024-11-09 02:46:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:02,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:02,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:02,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551019982] [2024-11-09 02:46:02,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551019982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:02,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:02,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:46:02,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399119792] [2024-11-09 02:46:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:02,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:46:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:46:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:46:02,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-09 02:46:02,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:02,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:02,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-09 02:46:02,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:04,703 INFO L124 PetriNetUnfolderBase]: 22260/29501 cut-off events. [2024-11-09 02:46:04,704 INFO L125 PetriNetUnfolderBase]: For 54319/54659 co-relation queries the response was YES. [2024-11-09 02:46:04,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96312 conditions, 29501 events. 22260/29501 cut-off events. For 54319/54659 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 155238 event pairs, 2670 based on Foata normal form. 240/29737 useless extension candidates. Maximal degree in co-relation 86414. Up to 10004 conditions per place. [2024-11-09 02:46:04,894 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 160 selfloop transitions, 39 changer transitions 1/205 dead transitions. [2024-11-09 02:46:04,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 205 transitions, 1510 flow [2024-11-09 02:46:04,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:46:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:46:04,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-11-09 02:46:04,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-09 02:46:04,897 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 711 flow. Second operand 7 states and 176 transitions. [2024-11-09 02:46:04,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 205 transitions, 1510 flow [2024-11-09 02:46:05,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 205 transitions, 1465 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-09 02:46:05,453 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 842 flow [2024-11-09 02:46:05,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=842, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-11-09 02:46:05,454 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-11-09 02:46:05,454 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 842 flow [2024-11-09 02:46:05,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:05,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:05,454 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] [2024-11-09 02:46:05,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:46:05,455 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)] === [2024-11-09 02:46:05,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:05,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1472110488, now seen corresponding path program 5 times [2024-11-09 02:46:05,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:05,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651407844] [2024-11-09 02:46:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:05,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:05,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:05,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651407844] [2024-11-09 02:46:05,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651407844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:05,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:05,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:46:05,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133905208] [2024-11-09 02:46:05,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:05,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:46:05,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:05,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:46:05,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:46:05,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-09 02:46:05,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:05,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:05,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-09 02:46:05,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:07,800 INFO L124 PetriNetUnfolderBase]: 26337/34366 cut-off events. [2024-11-09 02:46:07,801 INFO L125 PetriNetUnfolderBase]: For 82464/82464 co-relation queries the response was YES. [2024-11-09 02:46:08,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115287 conditions, 34366 events. 26337/34366 cut-off events. For 82464/82464 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 172218 event pairs, 10209 based on Foata normal form. 168/34534 useless extension candidates. Maximal degree in co-relation 105330. Up to 22083 conditions per place. [2024-11-09 02:46:08,248 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 127 selfloop transitions, 28 changer transitions 1/157 dead transitions. [2024-11-09 02:46:08,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 157 transitions, 1299 flow [2024-11-09 02:46:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:46:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:46:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-09 02:46:08,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-09 02:46:08,251 INFO L175 Difference]: Start difference. First operand has 88 places, 104 transitions, 842 flow. Second operand 5 states and 125 transitions. [2024-11-09 02:46:08,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 157 transitions, 1299 flow [2024-11-09 02:46:08,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 157 transitions, 1260 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-09 02:46:08,726 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 855 flow [2024-11-09 02:46:08,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=855, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2024-11-09 02:46:08,727 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-11-09 02:46:08,727 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 855 flow [2024-11-09 02:46:08,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:08,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:08,728 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] [2024-11-09 02:46:08,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:46:08,728 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:46:08,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash 842298878, now seen corresponding path program 3 times [2024-11-09 02:46:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:08,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530695443] [2024-11-09 02:46:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:08,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:08,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530695443] [2024-11-09 02:46:08,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530695443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:08,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:08,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:46:08,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719972799] [2024-11-09 02:46:08,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:08,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:46:08,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:08,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:46:08,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:46:08,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-09 02:46:08,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 855 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:08,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:08,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-09 02:46:08,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:11,486 INFO L124 PetriNetUnfolderBase]: 27114/35359 cut-off events. [2024-11-09 02:46:11,486 INFO L125 PetriNetUnfolderBase]: For 89057/89057 co-relation queries the response was YES. [2024-11-09 02:46:11,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118638 conditions, 35359 events. 27114/35359 cut-off events. For 89057/89057 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 177451 event pairs, 10209 based on Foata normal form. 240/35599 useless extension candidates. Maximal degree in co-relation 109161. Up to 22083 conditions per place. [2024-11-09 02:46:11,677 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 142 selfloop transitions, 30 changer transitions 0/173 dead transitions. [2024-11-09 02:46:11,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 1409 flow [2024-11-09 02:46:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:46:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:46:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-11-09 02:46:11,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5958333333333333 [2024-11-09 02:46:11,679 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 855 flow. Second operand 6 states and 143 transitions. [2024-11-09 02:46:11,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 1409 flow [2024-11-09 02:46:12,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 173 transitions, 1347 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-09 02:46:12,103 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 886 flow [2024-11-09 02:46:12,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=886, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2024-11-09 02:46:12,104 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-11-09 02:46:12,104 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 886 flow [2024-11-09 02:46:12,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:12,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:12,105 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] [2024-11-09 02:46:12,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:46:12,105 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:46:12,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash -914660432, now seen corresponding path program 6 times [2024-11-09 02:46:12,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:12,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144599080] [2024-11-09 02:46:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:12,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:12,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144599080] [2024-11-09 02:46:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144599080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:46:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148439549] [2024-11-09 02:46:12,184 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:46:12,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:46:12,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:46:12,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:46:12,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:46:12,253 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:46:12,254 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:46:12,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 02:46:12,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:46:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:12,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:46:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:12,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148439549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:46:12,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:46:12,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-09 02:46:12,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079529513] [2024-11-09 02:46:12,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:46:12,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:46:12,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:12,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:46:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:46:12,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-09 02:46:12,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 886 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:12,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:12,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-09 02:46:12,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:15,852 INFO L124 PetriNetUnfolderBase]: 31829/41604 cut-off events. [2024-11-09 02:46:15,852 INFO L125 PetriNetUnfolderBase]: For 87302/87302 co-relation queries the response was YES. [2024-11-09 02:46:15,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137826 conditions, 41604 events. 31829/41604 cut-off events. For 87302/87302 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 216182 event pairs, 2741 based on Foata normal form. 270/41874 useless extension candidates. Maximal degree in co-relation 126736. Up to 8142 conditions per place. [2024-11-09 02:46:16,113 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 259 selfloop transitions, 73 changer transitions 1/334 dead transitions. [2024-11-09 02:46:16,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 334 transitions, 2249 flow [2024-11-09 02:46:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:46:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:46:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2024-11-09 02:46:16,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5983333333333334 [2024-11-09 02:46:16,115 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 886 flow. Second operand 15 states and 359 transitions. [2024-11-09 02:46:16,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 334 transitions, 2249 flow [2024-11-09 02:46:16,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 334 transitions, 2193 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-09 02:46:16,654 INFO L231 Difference]: Finished difference. Result has 105 places, 118 transitions, 1120 flow [2024-11-09 02:46:16,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1120, PETRI_PLACES=105, PETRI_TRANSITIONS=118} [2024-11-09 02:46:16,655 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 61 predicate places. [2024-11-09 02:46:16,655 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 118 transitions, 1120 flow [2024-11-09 02:46:16,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:16,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:16,656 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] [2024-11-09 02:46:16,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:46:16,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:46:16,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:46:16,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:16,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2143166858, now seen corresponding path program 4 times [2024-11-09 02:46:16,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:16,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3473173] [2024-11-09 02:46:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:16,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3473173] [2024-11-09 02:46:16,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3473173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:16,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:16,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:46:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722445637] [2024-11-09 02:46:16,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:16,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:46:16,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:16,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:46:16,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:46:16,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-09 02:46:16,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 118 transitions, 1120 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:16,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:16,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-09 02:46:16,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:19,715 INFO L124 PetriNetUnfolderBase]: 28172/37469 cut-off events. [2024-11-09 02:46:19,715 INFO L125 PetriNetUnfolderBase]: For 102822/102838 co-relation queries the response was YES. [2024-11-09 02:46:19,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130261 conditions, 37469 events. 28172/37469 cut-off events. For 102822/102838 co-relation queries the response was YES. Maximal size of possible extension queue 1395. Compared 204871 event pairs, 10367 based on Foata normal form. 36/37422 useless extension candidates. Maximal degree in co-relation 118691. Up to 24942 conditions per place. [2024-11-09 02:46:20,003 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 121 selfloop transitions, 24 changer transitions 10/165 dead transitions. [2024-11-09 02:46:20,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 1555 flow [2024-11-09 02:46:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:46:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:46:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-09 02:46:20,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.585 [2024-11-09 02:46:20,005 INFO L175 Difference]: Start difference. First operand has 105 places, 118 transitions, 1120 flow. Second operand 5 states and 117 transitions. [2024-11-09 02:46:20,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 1555 flow [2024-11-09 02:46:20,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 165 transitions, 1477 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-09 02:46:20,554 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 1079 flow [2024-11-09 02:46:20,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1079, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2024-11-09 02:46:20,555 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2024-11-09 02:46:20,556 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 1079 flow [2024-11-09 02:46:20,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:20,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:20,556 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] [2024-11-09 02:46:20,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:46:20,558 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:46:20,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1290618586, now seen corresponding path program 7 times [2024-11-09 02:46:20,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:20,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213424062] [2024-11-09 02:46:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:20,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:20,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213424062] [2024-11-09 02:46:20,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213424062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:20,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:20,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:46:20,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101371706] [2024-11-09 02:46:20,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:20,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:46:20,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:20,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:46:20,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:46:20,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-09 02:46:20,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 1079 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:20,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:20,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-09 02:46:20,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:23,421 INFO L124 PetriNetUnfolderBase]: 27831/36798 cut-off events. [2024-11-09 02:46:23,422 INFO L125 PetriNetUnfolderBase]: For 116240/116779 co-relation queries the response was YES. [2024-11-09 02:46:23,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128446 conditions, 36798 events. 27831/36798 cut-off events. For 116240/116779 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 197643 event pairs, 9730 based on Foata normal form. 171/36652 useless extension candidates. Maximal degree in co-relation 106090. Up to 17970 conditions per place. [2024-11-09 02:46:23,659 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 106 selfloop transitions, 29 changer transitions 9/164 dead transitions. [2024-11-09 02:46:23,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 164 transitions, 1526 flow [2024-11-09 02:46:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:46:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:46:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-09 02:46:23,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-09 02:46:23,660 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 1079 flow. Second operand 5 states and 114 transitions. [2024-11-09 02:46:23,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 164 transitions, 1526 flow [2024-11-09 02:46:24,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 164 transitions, 1474 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 02:46:24,411 INFO L231 Difference]: Finished difference. Result has 103 places, 116 transitions, 1084 flow [2024-11-09 02:46:24,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1084, PETRI_PLACES=103, PETRI_TRANSITIONS=116} [2024-11-09 02:46:24,412 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2024-11-09 02:46:24,412 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 116 transitions, 1084 flow [2024-11-09 02:46:24,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:24,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:24,413 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] [2024-11-09 02:46:24,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:46:24,413 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:46:24,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2063547054, now seen corresponding path program 5 times [2024-11-09 02:46:24,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:24,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160385592] [2024-11-09 02:46:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:24,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:24,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160385592] [2024-11-09 02:46:24,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160385592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:24,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:24,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:46:24,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214470202] [2024-11-09 02:46:24,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:24,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:46:24,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:24,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:46:24,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:46:24,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-09 02:46:24,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 116 transitions, 1084 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:24,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:24,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-09 02:46:24,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:27,585 INFO L124 PetriNetUnfolderBase]: 33812/44097 cut-off events. [2024-11-09 02:46:27,586 INFO L125 PetriNetUnfolderBase]: For 127296/127296 co-relation queries the response was YES. [2024-11-09 02:46:27,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152698 conditions, 44097 events. 33812/44097 cut-off events. For 127296/127296 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 226907 event pairs, 9972 based on Foata normal form. 240/44337 useless extension candidates. Maximal degree in co-relation 127933. Up to 19176 conditions per place. [2024-11-09 02:46:27,855 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 157 selfloop transitions, 36 changer transitions 1/195 dead transitions. [2024-11-09 02:46:27,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 195 transitions, 1771 flow [2024-11-09 02:46:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:46:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:46:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-09 02:46:27,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-09 02:46:27,857 INFO L175 Difference]: Start difference. First operand has 103 places, 116 transitions, 1084 flow. Second operand 6 states and 145 transitions. [2024-11-09 02:46:27,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 195 transitions, 1771 flow [2024-11-09 02:46:28,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 195 transitions, 1705 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 02:46:28,663 INFO L231 Difference]: Finished difference. Result has 104 places, 119 transitions, 1139 flow [2024-11-09 02:46:28,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1139, PETRI_PLACES=104, PETRI_TRANSITIONS=119} [2024-11-09 02:46:28,664 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-11-09 02:46:28,664 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 119 transitions, 1139 flow [2024-11-09 02:46:28,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:28,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:28,665 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] [2024-11-09 02:46:28,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:46:28,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:46:28,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:28,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1672708670, now seen corresponding path program 6 times [2024-11-09 02:46:28,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:28,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90859017] [2024-11-09 02:46:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:28,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:28,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:28,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:28,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90859017] [2024-11-09 02:46:28,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90859017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:28,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:28,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:46:28,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948569513] [2024-11-09 02:46:28,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:28,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:46:28,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:46:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:46:28,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-09 02:46:28,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 119 transitions, 1139 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:28,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:28,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-09 02:46:28,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:31,560 INFO L124 PetriNetUnfolderBase]: 29668/39108 cut-off events. [2024-11-09 02:46:31,560 INFO L125 PetriNetUnfolderBase]: For 116425/116428 co-relation queries the response was YES. [2024-11-09 02:46:31,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135076 conditions, 39108 events. 29668/39108 cut-off events. For 116425/116428 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 207886 event pairs, 10989 based on Foata normal form. 36/39081 useless extension candidates. Maximal degree in co-relation 113002. Up to 20056 conditions per place. [2024-11-09 02:46:31,814 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 115 selfloop transitions, 28 changer transitions 10/164 dead transitions. [2024-11-09 02:46:31,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 164 transitions, 1566 flow [2024-11-09 02:46:31,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:46:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:46:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-09 02:46:31,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-09 02:46:31,815 INFO L175 Difference]: Start difference. First operand has 104 places, 119 transitions, 1139 flow. Second operand 5 states and 114 transitions. [2024-11-09 02:46:31,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 164 transitions, 1566 flow [2024-11-09 02:46:32,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 164 transitions, 1510 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-09 02:46:32,523 INFO L231 Difference]: Finished difference. Result has 106 places, 118 transitions, 1123 flow [2024-11-09 02:46:32,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1123, PETRI_PLACES=106, PETRI_TRANSITIONS=118} [2024-11-09 02:46:32,524 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2024-11-09 02:46:32,524 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 118 transitions, 1123 flow [2024-11-09 02:46:32,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:32,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:32,525 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] [2024-11-09 02:46:32,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 02:46:32,525 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:46:32,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1030488090, now seen corresponding path program 1 times [2024-11-09 02:46:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:32,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887024948] [2024-11-09 02:46:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:32,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:32,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887024948] [2024-11-09 02:46:32,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887024948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:46:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059586897] [2024-11-09 02:46:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:32,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:46:32,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:46:32,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:46:32,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:46:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:32,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 02:46:32,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:46:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:32,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:46:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:46:32,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059586897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:46:32,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:46:32,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-09 02:46:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493553065] [2024-11-09 02:46:32,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:46:32,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:46:32,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:32,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:46:32,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:46:32,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:46:32,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 118 transitions, 1123 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:32,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:32,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:46:32,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand