./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:09:50,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:09:50,629 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:09:50,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:09:50,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:09:50,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:09:50,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:09:50,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:09:50,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:09:50,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:09:50,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:09:50,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:09:50,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:09:50,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:09:50,676 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:09:50,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:09:50,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:09:50,679 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:09:50,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:09:50,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:09:50,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:09:50,681 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:09:50,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:09:50,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:09:50,682 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:09:50,682 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:09:50,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:09:50,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:09:50,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:09:50,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:09:50,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:09:50,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:09:50,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:09:50,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:09:50,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:09:50,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:09:50,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:09:50,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:09:50,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:09:50,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:09:50,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:09:50,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:09:50,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-10-13 07:09:50,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:09:51,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:09:51,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:09:51,007 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:09:51,007 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:09:51,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-10-13 07:09:52,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:09:52,569 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:09:52,570 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-10-13 07:09:52,580 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c8d7acd/cfbdeae98399441bbddbb2e498cc35c8/FLAG30cf69733 [2024-10-13 07:09:52,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c8d7acd/cfbdeae98399441bbddbb2e498cc35c8 [2024-10-13 07:09:52,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:09:52,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:09:52,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:09:52,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:09:52,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:09:52,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:52" (1/1) ... [2024-10-13 07:09:52,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5670d6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:52, skipping insertion in model container [2024-10-13 07:09:52,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:52" (1/1) ... [2024-10-13 07:09:52,992 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:09:53,185 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3066,3079] [2024-10-13 07:09:53,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:09:53,198 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:09:53,226 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3066,3079] [2024-10-13 07:09:53,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:09:53,257 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:09:53,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53 WrapperNode [2024-10-13 07:09:53,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:09:53,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:09:53,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:09:53,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:09:53,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,317 INFO L138 Inliner]: procedures = 21, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-10-13 07:09:53,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:09:53,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:09:53,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:09:53,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:09:53,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,336 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,365 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 07:09:53,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,384 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:09:53,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:09:53,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:09:53,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:09:53,396 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (1/1) ... [2024-10-13 07:09:53,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:09:53,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:53,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:09:53,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:09:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:09:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:09:53,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:09:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:09:53,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:09:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:09:53,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:09:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:09:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:09:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:09:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:09:53,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:09:53,489 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:09:53,610 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:09:53,612 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:09:53,900 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:09:53,900 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:09:54,061 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:09:54,062 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 07:09:54,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:54 BoogieIcfgContainer [2024-10-13 07:09:54,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:09:54,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:09:54,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:09:54,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:09:54,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:09:52" (1/3) ... [2024-10-13 07:09:54,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7e89ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:54, skipping insertion in model container [2024-10-13 07:09:54,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:53" (2/3) ... [2024-10-13 07:09:54,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7e89ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:54, skipping insertion in model container [2024-10-13 07:09:54,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:54" (3/3) ... [2024-10-13 07:09:54,073 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-10-13 07:09:54,087 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:09:54,088 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:09:54,088 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:09:54,140 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 07:09:54,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 93 flow [2024-10-13 07:09:54,212 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-10-13 07:09:54,212 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:09:54,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 4/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-13 07:09:54,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 93 flow [2024-10-13 07:09:54,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 82 flow [2024-10-13 07:09:54,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:09:54,247 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;@3c8828ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:09:54,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 07:09:54,268 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:09:54,268 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-10-13 07:09:54,268 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:09:54,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:54,271 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] [2024-10-13 07:09:54,272 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:09:54,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1869697828, now seen corresponding path program 1 times [2024-10-13 07:09:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:54,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442177763] [2024-10-13 07:09:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:55,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:55,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442177763] [2024-10-13 07:09:55,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442177763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:55,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:55,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:09:55,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166779863] [2024-10-13 07:09:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:55,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:09:55,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:09:55,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:09:55,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-10-13 07:09:55,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:55,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:55,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-10-13 07:09:55,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:55,649 INFO L124 PetriNetUnfolderBase]: 1930/2760 cut-off events. [2024-10-13 07:09:55,650 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-10-13 07:09:55,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 2760 events. 1930/2760 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13547 event pairs, 66 based on Foata normal form. 0/2246 useless extension candidates. Maximal degree in co-relation 5542. Up to 970 conditions per place. [2024-10-13 07:09:55,670 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 71 selfloop transitions, 8 changer transitions 6/91 dead transitions. [2024-10-13 07:09:55,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 91 transitions, 385 flow [2024-10-13 07:09:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:09:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:09:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-10-13 07:09:55,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-10-13 07:09:55,688 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 82 flow. Second operand 6 states and 141 transitions. [2024-10-13 07:09:55,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 91 transitions, 385 flow [2024-10-13 07:09:55,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 91 transitions, 363 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 07:09:55,701 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 120 flow [2024-10-13 07:09:55,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-10-13 07:09:55,709 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-10-13 07:09:55,709 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 120 flow [2024-10-13 07:09:55,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:55,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:55,710 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] [2024-10-13 07:09:55,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:09:55,711 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:09:55,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:55,712 INFO L85 PathProgramCache]: Analyzing trace with hash 973632830, now seen corresponding path program 1 times [2024-10-13 07:09:55,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:55,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927553340] [2024-10-13 07:09:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:55,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:55,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927553340] [2024-10-13 07:09:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927553340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:09:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550381366] [2024-10-13 07:09:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:55,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:09:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:09:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:09:55,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-10-13 07:09:55,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:55,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:55,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-10-13 07:09:55,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:56,074 INFO L124 PetriNetUnfolderBase]: 1274/1985 cut-off events. [2024-10-13 07:09:56,076 INFO L125 PetriNetUnfolderBase]: For 484/518 co-relation queries the response was YES. [2024-10-13 07:09:56,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4363 conditions, 1985 events. 1274/1985 cut-off events. For 484/518 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9821 event pairs, 424 based on Foata normal form. 86/1666 useless extension candidates. Maximal degree in co-relation 3922. Up to 1047 conditions per place. [2024-10-13 07:09:56,131 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 45 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-10-13 07:09:56,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 273 flow [2024-10-13 07:09:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:09:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:09:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-13 07:09:56,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-10-13 07:09:56,135 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 120 flow. Second operand 3 states and 80 transitions. [2024-10-13 07:09:56,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 273 flow [2024-10-13 07:09:56,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:09:56,139 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 134 flow [2024-10-13 07:09:56,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-10-13 07:09:56,140 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-10-13 07:09:56,140 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 134 flow [2024-10-13 07:09:56,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:56,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:56,142 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] [2024-10-13 07:09:56,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:09:56,142 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:09:56,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1520712930, now seen corresponding path program 1 times [2024-10-13 07:09:56,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:56,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788136447] [2024-10-13 07:09:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:56,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788136447] [2024-10-13 07:09:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788136447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:56,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:56,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:09:56,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259764430] [2024-10-13 07:09:56,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:56,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:09:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:09:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:09:56,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-10-13 07:09:56,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:56,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:56,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-10-13 07:09:56,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:56,497 INFO L124 PetriNetUnfolderBase]: 1715/2705 cut-off events. [2024-10-13 07:09:56,497 INFO L125 PetriNetUnfolderBase]: For 968/1026 co-relation queries the response was YES. [2024-10-13 07:09:56,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 2705 events. 1715/2705 cut-off events. For 968/1026 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14216 event pairs, 587 based on Foata normal form. 114/2305 useless extension candidates. Maximal degree in co-relation 5840. Up to 1613 conditions per place. [2024-10-13 07:09:56,510 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 44 selfloop transitions, 2 changer transitions 1/59 dead transitions. [2024-10-13 07:09:56,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 291 flow [2024-10-13 07:09:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:09:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:09:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-13 07:09:56,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-13 07:09:56,515 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 134 flow. Second operand 3 states and 78 transitions. [2024-10-13 07:09:56,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 291 flow [2024-10-13 07:09:56,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:09:56,519 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 148 flow [2024-10-13 07:09:56,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-10-13 07:09:56,520 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2024-10-13 07:09:56,520 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 148 flow [2024-10-13 07:09:56,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:56,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:56,520 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:56,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:09:56,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:09:56,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:56,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1930732514, now seen corresponding path program 1 times [2024-10-13 07:09:56,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:56,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261835172] [2024-10-13 07:09:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:09:56,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:56,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261835172] [2024-10-13 07:09:56,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261835172] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:09:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861979182] [2024-10-13 07:09:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:56,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:09:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:09:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:09:56,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-10-13 07:09:56,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:56,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:56,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-10-13 07:09:56,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:56,954 INFO L124 PetriNetUnfolderBase]: 2217/3273 cut-off events. [2024-10-13 07:09:56,955 INFO L125 PetriNetUnfolderBase]: For 1592/1636 co-relation queries the response was YES. [2024-10-13 07:09:56,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8230 conditions, 3273 events. 2217/3273 cut-off events. For 1592/1636 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14718 event pairs, 156 based on Foata normal form. 44/2841 useless extension candidates. Maximal degree in co-relation 7532. Up to 1635 conditions per place. [2024-10-13 07:09:56,976 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 53 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-10-13 07:09:56,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 353 flow [2024-10-13 07:09:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:09:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:09:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-10-13 07:09:56,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-10-13 07:09:56,978 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 148 flow. Second operand 4 states and 85 transitions. [2024-10-13 07:09:56,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 353 flow [2024-10-13 07:09:56,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:09:56,982 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 173 flow [2024-10-13 07:09:56,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-10-13 07:09:56,983 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2024-10-13 07:09:56,984 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 173 flow [2024-10-13 07:09:56,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:56,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:56,984 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:56,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:09:56,985 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:09:56,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1261304906, now seen corresponding path program 2 times [2024-10-13 07:09:56,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:56,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256739928] [2024-10-13 07:09:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:56,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:09:57,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:57,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256739928] [2024-10-13 07:09:57,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256739928] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:57,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319008526] [2024-10-13 07:09:57,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:57,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:57,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:57,163 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) [2024-10-13 07:09:57,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:09:57,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:57,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:57,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:09:57,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:57,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:57,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319008526] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:57,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:57,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2024-10-13 07:09:57,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793797476] [2024-10-13 07:09:57,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:57,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:57,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:57,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:57,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:09:57,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-10-13 07:09:57,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 173 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:57,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:57,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-10-13 07:09:57,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:58,053 INFO L124 PetriNetUnfolderBase]: 2936/4328 cut-off events. [2024-10-13 07:09:58,053 INFO L125 PetriNetUnfolderBase]: For 2399/2456 co-relation queries the response was YES. [2024-10-13 07:09:58,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 4328 events. 2936/4328 cut-off events. For 2399/2456 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21948 event pairs, 111 based on Foata normal form. 165/3964 useless extension candidates. Maximal degree in co-relation 10560. Up to 2614 conditions per place. [2024-10-13 07:09:58,075 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 70 selfloop transitions, 9 changer transitions 1/87 dead transitions. [2024-10-13 07:09:58,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 477 flow [2024-10-13 07:09:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:09:58,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:09:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-10-13 07:09:58,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-10-13 07:09:58,079 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 173 flow. Second operand 6 states and 125 transitions. [2024-10-13 07:09:58,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 477 flow [2024-10-13 07:09:58,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:09:58,087 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 210 flow [2024-10-13 07:09:58,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-10-13 07:09:58,088 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-10-13 07:09:58,088 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 210 flow [2024-10-13 07:09:58,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:58,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:58,089 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:58,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:58,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:58,291 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:09:58,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:58,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1094006826, now seen corresponding path program 3 times [2024-10-13 07:09:58,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:58,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309062864] [2024-10-13 07:09:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:58,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:58,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:58,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309062864] [2024-10-13 07:09:58,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309062864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:58,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:58,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:09:58,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324091994] [2024-10-13 07:09:58,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:58,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:09:58,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:58,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:09:58,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:09:58,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-10-13 07:09:58,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:58,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:58,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-10-13 07:09:58,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:58,972 INFO L124 PetriNetUnfolderBase]: 4229/6275 cut-off events. [2024-10-13 07:09:58,972 INFO L125 PetriNetUnfolderBase]: For 5699/5827 co-relation queries the response was YES. [2024-10-13 07:09:58,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 6275 events. 4229/6275 cut-off events. For 5699/5827 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 32919 event pairs, 848 based on Foata normal form. 250/5719 useless extension candidates. Maximal degree in co-relation 13488. Up to 2457 conditions per place. [2024-10-13 07:09:59,007 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 69 selfloop transitions, 6 changer transitions 2/86 dead transitions. [2024-10-13 07:09:59,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 86 transitions, 518 flow [2024-10-13 07:09:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:09:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:09:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-10-13 07:09:59,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-10-13 07:09:59,009 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 210 flow. Second operand 5 states and 109 transitions. [2024-10-13 07:09:59,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 86 transitions, 518 flow [2024-10-13 07:09:59,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 492 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-13 07:09:59,021 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 204 flow [2024-10-13 07:09:59,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-10-13 07:09:59,022 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2024-10-13 07:09:59,022 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 204 flow [2024-10-13 07:09:59,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:59,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:59,024 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:59,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:09:59,024 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 1 more)] === [2024-10-13 07:09:59,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:59,026 INFO L85 PathProgramCache]: Analyzing trace with hash -287348584, now seen corresponding path program 4 times [2024-10-13 07:09:59,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:59,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353717202] [2024-10-13 07:09:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:59,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:59,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353717202] [2024-10-13 07:09:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353717202] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:59,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049079238] [2024-10-13 07:09:59,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:09:59,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:59,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:59,270 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) [2024-10-13 07:09:59,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:09:59,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:09:59,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:59,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 07:09:59,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:59,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:59,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049079238] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:59,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:59,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 14 [2024-10-13 07:09:59,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102588275] [2024-10-13 07:09:59,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:59,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:09:59,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:59,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:09:59,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:09:59,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-10-13 07:09:59,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 204 flow. Second operand has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 15 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:59,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:59,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-10-13 07:09:59,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:01,800 INFO L124 PetriNetUnfolderBase]: 10040/14870 cut-off events. [2024-10-13 07:10:01,800 INFO L125 PetriNetUnfolderBase]: For 15804/15804 co-relation queries the response was YES. [2024-10-13 07:10:01,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40787 conditions, 14870 events. 10040/14870 cut-off events. For 15804/15804 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 84595 event pairs, 822 based on Foata normal form. 532/13754 useless extension candidates. Maximal degree in co-relation 14897. Up to 3880 conditions per place. [2024-10-13 07:10:01,895 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 249 selfloop transitions, 67 changer transitions 37/357 dead transitions. [2024-10-13 07:10:01,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 357 transitions, 2074 flow [2024-10-13 07:10:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 07:10:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-13 07:10:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 504 transitions. [2024-10-13 07:10:01,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-10-13 07:10:01,900 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 204 flow. Second operand 26 states and 504 transitions. [2024-10-13 07:10:01,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 357 transitions, 2074 flow [2024-10-13 07:10:01,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 357 transitions, 2040 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 07:10:01,914 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 919 flow [2024-10-13 07:10:01,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=919, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-10-13 07:10:01,917 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2024-10-13 07:10:01,917 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 919 flow [2024-10-13 07:10:01,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 15 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:01,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:01,918 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:10:02,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 07:10:02,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-13 07:10:02,120 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 1 more)] === [2024-10-13 07:10:02,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:02,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1970003000, now seen corresponding path program 5 times [2024-10-13 07:10:02,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:02,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636103186] [2024-10-13 07:10:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:02,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:10:02,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:02,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636103186] [2024-10-13 07:10:02,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636103186] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:10:02,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803498543] [2024-10-13 07:10:02,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:10:02,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:02,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:10:02,202 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) [2024-10-13 07:10:02,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:10:02,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-13 07:10:02,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:10:02,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:10:02,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:10:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:10:02,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:10:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:10:02,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803498543] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:10:02,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:10:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-10-13 07:10:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371647804] [2024-10-13 07:10:02,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:10:02,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:10:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:10:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:10:02,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-10-13 07:10:02,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 919 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:02,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:02,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-10-13 07:10:02,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:03,828 INFO L124 PetriNetUnfolderBase]: 7788/12539 cut-off events. [2024-10-13 07:10:03,828 INFO L125 PetriNetUnfolderBase]: For 59146/59604 co-relation queries the response was YES. [2024-10-13 07:10:03,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47383 conditions, 12539 events. 7788/12539 cut-off events. For 59146/59604 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 79618 event pairs, 3182 based on Foata normal form. 341/11151 useless extension candidates. Maximal degree in co-relation 39468. Up to 4504 conditions per place. [2024-10-13 07:10:03,972 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 141 selfloop transitions, 22 changer transitions 0/200 dead transitions. [2024-10-13 07:10:03,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 200 transitions, 1994 flow [2024-10-13 07:10:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:10:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:10:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-13 07:10:03,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-10-13 07:10:03,974 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 919 flow. Second operand 4 states and 113 transitions. [2024-10-13 07:10:03,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 200 transitions, 1994 flow [2024-10-13 07:10:04,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 200 transitions, 1756 flow, removed 103 selfloop flow, removed 4 redundant places. [2024-10-13 07:10:04,128 INFO L231 Difference]: Finished difference. Result has 102 places, 124 transitions, 1064 flow [2024-10-13 07:10:04,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1064, PETRI_PLACES=102, PETRI_TRANSITIONS=124} [2024-10-13 07:10:04,128 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2024-10-13 07:10:04,129 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 124 transitions, 1064 flow [2024-10-13 07:10:04,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:04,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:04,129 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:10:04,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 07:10:04,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:04,333 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 1 more)] === [2024-10-13 07:10:04,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash -701209516, now seen corresponding path program 1 times [2024-10-13 07:10:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:04,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480697742] [2024-10-13 07:10:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:04,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:10:04,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480697742] [2024-10-13 07:10:04,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480697742] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:10:04,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347432647] [2024-10-13 07:10:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:04,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:04,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:10:04,419 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) [2024-10-13 07:10:04,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:10:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:04,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:10:04,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:10:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:10:04,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:10:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:10:04,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347432647] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:10:04,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:10:04,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-10-13 07:10:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545271895] [2024-10-13 07:10:04,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:10:04,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:10:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:04,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:10:04,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:10:04,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-10-13 07:10:04,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 124 transitions, 1064 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:04,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:04,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-10-13 07:10:04,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:07,456 INFO L124 PetriNetUnfolderBase]: 15972/25705 cut-off events. [2024-10-13 07:10:07,456 INFO L125 PetriNetUnfolderBase]: For 118584/119225 co-relation queries the response was YES. [2024-10-13 07:10:07,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96044 conditions, 25705 events. 15972/25705 cut-off events. For 118584/119225 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 181095 event pairs, 6464 based on Foata normal form. 674/22754 useless extension candidates. Maximal degree in co-relation 92211. Up to 9154 conditions per place. [2024-10-13 07:10:07,719 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 176 selfloop transitions, 24 changer transitions 0/237 dead transitions. [2024-10-13 07:10:07,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 237 transitions, 2456 flow [2024-10-13 07:10:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:10:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:10:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-13 07:10:07,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-10-13 07:10:07,721 INFO L175 Difference]: Start difference. First operand has 102 places, 124 transitions, 1064 flow. Second operand 4 states and 109 transitions. [2024-10-13 07:10:07,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 237 transitions, 2456 flow [2024-10-13 07:10:07,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 237 transitions, 2386 flow, removed 35 selfloop flow, removed 0 redundant places. [2024-10-13 07:10:07,993 INFO L231 Difference]: Finished difference. Result has 107 places, 143 transitions, 1342 flow [2024-10-13 07:10:07,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1342, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2024-10-13 07:10:07,994 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 69 predicate places. [2024-10-13 07:10:07,994 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 1342 flow [2024-10-13 07:10:07,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:07,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:07,995 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:10:08,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 07:10:08,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:08,200 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 1 more)] === [2024-10-13 07:10:08,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1342190548, now seen corresponding path program 6 times [2024-10-13 07:10:08,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:08,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487466425] [2024-10-13 07:10:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:10:08,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:08,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487466425] [2024-10-13 07:10:08,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487466425] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:10:08,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694383925] [2024-10-13 07:10:08,465 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:10:08,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:08,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:10:08,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:10:08,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 07:10:08,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-13 07:10:08,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:10:08,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 07:10:08,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:10:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:10:08,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:10:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:10:08,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694383925] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:10:08,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:10:08,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 15 [2024-10-13 07:10:08,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602476825] [2024-10-13 07:10:08,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:10:08,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:10:08,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:08,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:10:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:10:08,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-10-13 07:10:08,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 1342 flow. Second operand has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:08,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:08,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-10-13 07:10:08,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:16,429 INFO L124 PetriNetUnfolderBase]: 43935/66259 cut-off events. [2024-10-13 07:10:16,429 INFO L125 PetriNetUnfolderBase]: For 354707/355151 co-relation queries the response was YES. [2024-10-13 07:10:16,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254633 conditions, 66259 events. 43935/66259 cut-off events. For 354707/355151 co-relation queries the response was YES. Maximal size of possible extension queue 2073. Compared 475413 event pairs, 6524 based on Foata normal form. 2452/59921 useless extension candidates. Maximal degree in co-relation 234716. Up to 15524 conditions per place. [2024-10-13 07:10:16,992 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 209 selfloop transitions, 129 changer transitions 183/540 dead transitions. [2024-10-13 07:10:16,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 540 transitions, 5722 flow [2024-10-13 07:10:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 07:10:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 07:10:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 345 transitions. [2024-10-13 07:10:16,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-13 07:10:16,995 INFO L175 Difference]: Start difference. First operand has 107 places, 143 transitions, 1342 flow. Second operand 15 states and 345 transitions. [2024-10-13 07:10:16,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 540 transitions, 5722 flow [2024-10-13 07:10:18,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 540 transitions, 5594 flow, removed 64 selfloop flow, removed 0 redundant places. [2024-10-13 07:10:18,220 INFO L231 Difference]: Finished difference. Result has 131 places, 220 transitions, 2845 flow [2024-10-13 07:10:18,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2845, PETRI_PLACES=131, PETRI_TRANSITIONS=220} [2024-10-13 07:10:18,221 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 93 predicate places. [2024-10-13 07:10:18,221 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 220 transitions, 2845 flow [2024-10-13 07:10:18,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:18,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:18,223 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:10:18,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 07:10:18,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 07:10:18,425 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 1 more)] === [2024-10-13 07:10:18,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:18,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1187390958, now seen corresponding path program 7 times [2024-10-13 07:10:18,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:18,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101440341] [2024-10-13 07:10:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:18,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 07:10:18,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101440341] [2024-10-13 07:10:18,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101440341] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:10:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693785873] [2024-10-13 07:10:18,532 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:10:18,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:18,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:10:18,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:10:18,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 07:10:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:18,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:10:18,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:10:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:10:18,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:10:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 07:10:18,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693785873] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:10:18,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:10:18,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-10-13 07:10:18,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372993303] [2024-10-13 07:10:18,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:10:18,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:10:18,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:18,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:10:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:10:18,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-10-13 07:10:18,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 220 transitions, 2845 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:18,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:18,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-10-13 07:10:18,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:25,839 INFO L124 PetriNetUnfolderBase]: 31729/50577 cut-off events. [2024-10-13 07:10:25,840 INFO L125 PetriNetUnfolderBase]: For 457865/459627 co-relation queries the response was YES. [2024-10-13 07:10:26,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245733 conditions, 50577 events. 31729/50577 cut-off events. For 457865/459627 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 372407 event pairs, 10794 based on Foata normal form. 997/44170 useless extension candidates. Maximal degree in co-relation 241748. Up to 14882 conditions per place. [2024-10-13 07:10:26,436 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 383 selfloop transitions, 78 changer transitions 2/506 dead transitions. [2024-10-13 07:10:26,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 506 transitions, 7487 flow [2024-10-13 07:10:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:10:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:10:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-10-13 07:10:26,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2024-10-13 07:10:26,438 INFO L175 Difference]: Start difference. First operand has 131 places, 220 transitions, 2845 flow. Second operand 5 states and 146 transitions. [2024-10-13 07:10:26,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 506 transitions, 7487 flow [2024-10-13 07:10:27,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 506 transitions, 7267 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-10-13 07:10:27,930 INFO L231 Difference]: Finished difference. Result has 132 places, 263 transitions, 3714 flow [2024-10-13 07:10:27,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3714, PETRI_PLACES=132, PETRI_TRANSITIONS=263} [2024-10-13 07:10:27,931 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 94 predicate places. [2024-10-13 07:10:27,931 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 263 transitions, 3714 flow [2024-10-13 07:10:27,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:27,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:27,931 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:10:27,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 07:10:28,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:28,132 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 1 more)] === [2024-10-13 07:10:28,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:28,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1686566542, now seen corresponding path program 2 times [2024-10-13 07:10:28,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:28,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665635903] [2024-10-13 07:10:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:28,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 07:10:28,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:28,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665635903] [2024-10-13 07:10:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665635903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:10:28,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212587077] [2024-10-13 07:10:28,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:10:28,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:28,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:10:28,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:10:28,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 07:10:28,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:10:28,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:10:28,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:10:28,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:10:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:10:28,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:10:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 07:10:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212587077] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:10:28,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:10:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-10-13 07:10:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918172646] [2024-10-13 07:10:28,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:10:28,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:10:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:10:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:10:28,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-10-13 07:10:28,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 263 transitions, 3714 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:28,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:28,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-10-13 07:10:28,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:43,190 INFO L124 PetriNetUnfolderBase]: 61895/98398 cut-off events. [2024-10-13 07:10:43,190 INFO L125 PetriNetUnfolderBase]: For 1013017/1016347 co-relation queries the response was YES. [2024-10-13 07:10:44,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488178 conditions, 98398 events. 61895/98398 cut-off events. For 1013017/1016347 co-relation queries the response was YES. Maximal size of possible extension queue 2217. Compared 794173 event pairs, 21996 based on Foata normal form. 1725/85788 useless extension candidates. Maximal degree in co-relation 481674. Up to 26665 conditions per place. [2024-10-13 07:10:44,533 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 450 selfloop transitions, 115 changer transitions 0/608 dead transitions. [2024-10-13 07:10:44,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 608 transitions, 10063 flow [2024-10-13 07:10:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:10:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:10:44,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-10-13 07:10:44,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-10-13 07:10:44,535 INFO L175 Difference]: Start difference. First operand has 132 places, 263 transitions, 3714 flow. Second operand 5 states and 140 transitions. [2024-10-13 07:10:44,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 608 transitions, 10063 flow [2024-10-13 07:10:47,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 608 transitions, 9487 flow, removed 288 selfloop flow, removed 0 redundant places. [2024-10-13 07:10:47,321 INFO L231 Difference]: Finished difference. Result has 139 places, 327 transitions, 5042 flow [2024-10-13 07:10:47,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3542, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5042, PETRI_PLACES=139, PETRI_TRANSITIONS=327} [2024-10-13 07:10:47,322 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 101 predicate places. [2024-10-13 07:10:47,322 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 327 transitions, 5042 flow [2024-10-13 07:10:47,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:47,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:47,322 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:10:47,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 07:10:47,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:47,523 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 1 more)] === [2024-10-13 07:10:47,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1585638172, now seen corresponding path program 1 times [2024-10-13 07:10:47,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:47,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270741964] [2024-10-13 07:10:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:47,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:10:47,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:47,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270741964] [2024-10-13 07:10:47,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270741964] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:10:47,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858888686] [2024-10-13 07:10:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:47,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:47,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:10:47,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:10:47,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 07:10:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:47,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:10:47,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:10:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:10:48,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:10:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:10:48,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858888686] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:10:48,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:10:48,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 16 [2024-10-13 07:10:48,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507882415] [2024-10-13 07:10:48,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:10:48,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 07:10:48,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:48,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 07:10:48,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:10:48,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-10-13 07:10:48,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 327 transitions, 5042 flow. Second operand has 17 states, 17 states have (on average 11.0) internal successors, (187), 17 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:48,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:48,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-10-13 07:10:48,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand