./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-bakery-3.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-bakery-3.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 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:08:42,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:08:42,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:08:42,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:08:42,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:08:42,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:08:42,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:08:42,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:08:42,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:08:42,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:08:42,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:08:42,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:08:42,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:08:42,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:08:42,927 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:08:42,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:08:42,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:08:42,928 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:08:42,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:08:42,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:08:42,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:08:42,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:08:42,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:08:42,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:08:42,933 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:08:42,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:08:42,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:08:42,934 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:08:42,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:08:42,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:08:42,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:08:42,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:08:42,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:08:42,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:08:42,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:08:42,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:08:42,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:08:42,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:08:42,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:08:42,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:08:42,937 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:08:42,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:08:42,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2024-10-13 07:08:43,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:08:43,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:08:43,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:08:43,242 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:08:43,243 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:08:43,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2024-10-13 07:08:44,740 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:08:44,939 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:08:44,942 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2024-10-13 07:08:44,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ec55c11/e44d7d66d7ad4deaad4ace2b3f3a0e05/FLAG9dbf7a79b [2024-10-13 07:08:44,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ec55c11/e44d7d66d7ad4deaad4ace2b3f3a0e05 [2024-10-13 07:08:44,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:08:44,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:08:44,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:08:44,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:08:44,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:08:44,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:44" (1/1) ... [2024-10-13 07:08:44,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b950eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:44, skipping insertion in model container [2024-10-13 07:08:44,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:44" (1/1) ... [2024-10-13 07:08:45,018 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:08:45,262 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-bakery-3.wvr.c[5465,5478] [2024-10-13 07:08:45,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:08:45,281 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:08:45,311 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-bakery-3.wvr.c[5465,5478] [2024-10-13 07:08:45,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:08:45,330 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:08:45,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45 WrapperNode [2024-10-13 07:08:45,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:08:45,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:08:45,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:08:45,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:08:45,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,387 INFO L138 Inliner]: procedures = 21, calls = 95, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 252 [2024-10-13 07:08:45,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:08:45,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:08:45,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:08:45,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:08:45,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,465 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 07:08:45,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:08:45,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:08:45,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:08:45,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:08:45,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (1/1) ... [2024-10-13 07:08:45,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:08:45,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:45,530 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 07:08:45,532 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 07:08:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:08:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:08:45,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:08:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:08:45,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:08:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:08:45,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:08:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:08:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:08:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:08:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:08:45,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:08:45,574 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 07:08:45,663 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:08:45,665 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:08:45,997 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:08:45,998 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:08:46,309 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:08:46,310 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 07:08:46,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:46 BoogieIcfgContainer [2024-10-13 07:08:46,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:08:46,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:08:46,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:08:46,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:08:46,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:08:44" (1/3) ... [2024-10-13 07:08:46,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7596f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:46, skipping insertion in model container [2024-10-13 07:08:46,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:45" (2/3) ... [2024-10-13 07:08:46,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7596f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:46, skipping insertion in model container [2024-10-13 07:08:46,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:46" (3/3) ... [2024-10-13 07:08:46,322 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2024-10-13 07:08:46,342 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:08:46,343 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:08:46,343 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:08:46,391 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 07:08:46,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 58 transitions, 137 flow [2024-10-13 07:08:46,497 INFO L124 PetriNetUnfolderBase]: 0/55 cut-off events. [2024-10-13 07:08:46,497 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:08:46,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 0/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-13 07:08:46,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 58 transitions, 137 flow [2024-10-13 07:08:46,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 54 transitions, 126 flow [2024-10-13 07:08:46,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:08:46,520 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;@443000b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:08:46,520 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 07:08:46,544 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:08:46,544 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2024-10-13 07:08:46,544 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:08:46,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:46,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:46,546 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 07:08:46,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1298372646, now seen corresponding path program 1 times [2024-10-13 07:08:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:46,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982677991] [2024-10-13 07:08:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:46,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:47,420 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 07:08:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982677991] [2024-10-13 07:08:47,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982677991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:47,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:47,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:08:47,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592802268] [2024-10-13 07:08:47,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:47,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:47,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:47,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:08:47,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-10-13 07:08:47,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 126 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 07:08:47,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:47,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-10-13 07:08:47,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:48,965 INFO L124 PetriNetUnfolderBase]: 4441/7447 cut-off events. [2024-10-13 07:08:48,967 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-10-13 07:08:48,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 7447 events. 4441/7447 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 50330 event pairs, 1599 based on Foata normal form. 1/7359 useless extension candidates. Maximal degree in co-relation 13435. Up to 2233 conditions per place. [2024-10-13 07:08:49,037 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 135 selfloop transitions, 15 changer transitions 18/187 dead transitions. [2024-10-13 07:08:49,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 187 transitions, 782 flow [2024-10-13 07:08:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:08:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:08:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 411 transitions. [2024-10-13 07:08:49,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6442006269592476 [2024-10-13 07:08:49,059 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 126 flow. Second operand 11 states and 411 transitions. [2024-10-13 07:08:49,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 187 transitions, 782 flow [2024-10-13 07:08:49,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 187 transitions, 734 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 07:08:49,081 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 206 flow [2024-10-13 07:08:49,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=206, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-10-13 07:08:49,090 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2024-10-13 07:08:49,090 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 206 flow [2024-10-13 07:08:49,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 07:08:49,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:49,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:49,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:08:49,092 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 07:08:49,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:49,093 INFO L85 PathProgramCache]: Analyzing trace with hash -615578906, now seen corresponding path program 2 times [2024-10-13 07:08:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:49,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094958023] [2024-10-13 07:08:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:49,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:49,793 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 07:08:49,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:49,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094958023] [2024-10-13 07:08:49,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094958023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:49,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:49,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:08:49,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735591599] [2024-10-13 07:08:49,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:49,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:08:49,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:08:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:08:49,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-10-13 07:08:49,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 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 07:08:49,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:49,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-10-13 07:08:49,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:51,128 INFO L124 PetriNetUnfolderBase]: 6540/10834 cut-off events. [2024-10-13 07:08:51,129 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-10-13 07:08:51,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21727 conditions, 10834 events. 6540/10834 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 73614 event pairs, 2248 based on Foata normal form. 122/10692 useless extension candidates. Maximal degree in co-relation 21700. Up to 8293 conditions per place. [2024-10-13 07:08:51,211 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 99 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2024-10-13 07:08:51,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 154 transitions, 620 flow [2024-10-13 07:08:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 07:08:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 07:08:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 289 transitions. [2024-10-13 07:08:51,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228448275862069 [2024-10-13 07:08:51,214 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 206 flow. Second operand 8 states and 289 transitions. [2024-10-13 07:08:51,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 154 transitions, 620 flow [2024-10-13 07:08:51,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 154 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 07:08:51,227 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 330 flow [2024-10-13 07:08:51,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=330, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2024-10-13 07:08:51,229 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 16 predicate places. [2024-10-13 07:08:51,230 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 330 flow [2024-10-13 07:08:51,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 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 07:08:51,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:51,230 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:51,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:08:51,231 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 07:08:51,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash -386198332, now seen corresponding path program 3 times [2024-10-13 07:08:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:51,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531217598] [2024-10-13 07:08:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:51,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:51,336 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 07:08:51,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:51,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531217598] [2024-10-13 07:08:51,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531217598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:51,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:51,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:08:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631972963] [2024-10-13 07:08:51,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:51,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:08:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:08:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:08:51,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2024-10-13 07:08:51,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 07:08:51,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:51,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2024-10-13 07:08:51,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:52,110 INFO L124 PetriNetUnfolderBase]: 3749/7275 cut-off events. [2024-10-13 07:08:52,111 INFO L125 PetriNetUnfolderBase]: For 1193/1226 co-relation queries the response was YES. [2024-10-13 07:08:52,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15505 conditions, 7275 events. 3749/7275 cut-off events. For 1193/1226 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 55525 event pairs, 2406 based on Foata normal form. 124/7066 useless extension candidates. Maximal degree in co-relation 12309. Up to 4392 conditions per place. [2024-10-13 07:08:52,171 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 58 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2024-10-13 07:08:52,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 504 flow [2024-10-13 07:08:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:08:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:08:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-10-13 07:08:52,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7183908045977011 [2024-10-13 07:08:52,173 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 330 flow. Second operand 3 states and 125 transitions. [2024-10-13 07:08:52,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 504 flow [2024-10-13 07:08:52,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:08:52,191 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 340 flow [2024-10-13 07:08:52,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2024-10-13 07:08:52,192 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 19 predicate places. [2024-10-13 07:08:52,192 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 340 flow [2024-10-13 07:08:52,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 07:08:52,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:52,193 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:52,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:08:52,194 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 07:08:52,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1906282394, now seen corresponding path program 4 times [2024-10-13 07:08:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:52,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800348279] [2024-10-13 07:08:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:52,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:52,301 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 07:08:52,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:52,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800348279] [2024-10-13 07:08:52,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800348279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:52,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:52,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:08:52,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939626499] [2024-10-13 07:08:52,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:52,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:08:52,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:52,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:08:52,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:08:52,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2024-10-13 07:08:52,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 07:08:52,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:52,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2024-10-13 07:08:52,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:53,025 INFO L124 PetriNetUnfolderBase]: 3628/7202 cut-off events. [2024-10-13 07:08:53,026 INFO L125 PetriNetUnfolderBase]: For 1498/1565 co-relation queries the response was YES. [2024-10-13 07:08:53,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15916 conditions, 7202 events. 3628/7202 cut-off events. For 1498/1565 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 56638 event pairs, 2614 based on Foata normal form. 109/6980 useless extension candidates. Maximal degree in co-relation 12668. Up to 4482 conditions per place. [2024-10-13 07:08:53,096 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 58 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2024-10-13 07:08:53,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 523 flow [2024-10-13 07:08:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:08:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:08:53,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-10-13 07:08:53,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2024-10-13 07:08:53,098 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 340 flow. Second operand 3 states and 124 transitions. [2024-10-13 07:08:53,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 523 flow [2024-10-13 07:08:53,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:53,111 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 346 flow [2024-10-13 07:08:53,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2024-10-13 07:08:53,113 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2024-10-13 07:08:53,113 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 346 flow [2024-10-13 07:08:53,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 07:08:53,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:53,114 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:53,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:08:53,115 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 07:08:53,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:53,117 INFO L85 PathProgramCache]: Analyzing trace with hash -27737596, now seen corresponding path program 5 times [2024-10-13 07:08:53,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:53,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316880092] [2024-10-13 07:08:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:53,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:53,376 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 07:08:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:53,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316880092] [2024-10-13 07:08:53,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316880092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:53,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:53,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:08:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868562234] [2024-10-13 07:08:53,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:53,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:53,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:53,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:08:53,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-10-13 07:08:53,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 346 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 07:08:53,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:53,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-10-13 07:08:53,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:54,962 INFO L124 PetriNetUnfolderBase]: 7151/12498 cut-off events. [2024-10-13 07:08:54,962 INFO L125 PetriNetUnfolderBase]: For 3546/3632 co-relation queries the response was YES. [2024-10-13 07:08:55,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29585 conditions, 12498 events. 7151/12498 cut-off events. For 3546/3632 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 94141 event pairs, 2333 based on Foata normal form. 25/12289 useless extension candidates. Maximal degree in co-relation 16899. Up to 3108 conditions per place. [2024-10-13 07:08:55,065 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 184 selfloop transitions, 26 changer transitions 18/257 dead transitions. [2024-10-13 07:08:55,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 257 transitions, 1326 flow [2024-10-13 07:08:55,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:08:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:08:55,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 425 transitions. [2024-10-13 07:08:55,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6661442006269592 [2024-10-13 07:08:55,068 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 346 flow. Second operand 11 states and 425 transitions. [2024-10-13 07:08:55,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 257 transitions, 1326 flow [2024-10-13 07:08:55,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 257 transitions, 1322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:55,081 INFO L231 Difference]: Finished difference. Result has 98 places, 112 transitions, 549 flow [2024-10-13 07:08:55,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=549, PETRI_PLACES=98, PETRI_TRANSITIONS=112} [2024-10-13 07:08:55,082 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 34 predicate places. [2024-10-13 07:08:55,082 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 112 transitions, 549 flow [2024-10-13 07:08:55,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 07:08:55,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:55,083 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:55,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:08:55,083 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 07:08:55,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:55,085 INFO L85 PathProgramCache]: Analyzing trace with hash -846354124, now seen corresponding path program 6 times [2024-10-13 07:08:55,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:55,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550348232] [2024-10-13 07:08:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:55,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:55,847 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 07:08:55,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:55,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550348232] [2024-10-13 07:08:55,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550348232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:55,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:55,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:08:55,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363690914] [2024-10-13 07:08:55,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:55,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:08:55,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:55,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:08:55,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:08:55,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-13 07:08:55,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 112 transitions, 549 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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 07:08:55,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:55,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-13 07:08:55,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:59,956 INFO L124 PetriNetUnfolderBase]: 21175/36605 cut-off events. [2024-10-13 07:08:59,956 INFO L125 PetriNetUnfolderBase]: For 14177/14510 co-relation queries the response was YES. [2024-10-13 07:09:00,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90363 conditions, 36605 events. 21175/36605 cut-off events. For 14177/14510 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 306012 event pairs, 4639 based on Foata normal form. 65/35755 useless extension candidates. Maximal degree in co-relation 90287. Up to 16680 conditions per place. [2024-10-13 07:09:00,333 INFO L140 encePairwiseOnDemand]: 40/58 looper letters, 258 selfloop transitions, 100 changer transitions 2/413 dead transitions. [2024-10-13 07:09:00,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 413 transitions, 2123 flow [2024-10-13 07:09:00,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 07:09:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 07:09:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 703 transitions. [2024-10-13 07:09:00,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2024-10-13 07:09:00,337 INFO L175 Difference]: Start difference. First operand has 98 places, 112 transitions, 549 flow. Second operand 19 states and 703 transitions. [2024-10-13 07:09:00,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 413 transitions, 2123 flow [2024-10-13 07:09:00,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 413 transitions, 2117 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-13 07:09:00,637 INFO L231 Difference]: Finished difference. Result has 127 places, 213 transitions, 1268 flow [2024-10-13 07:09:00,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1268, PETRI_PLACES=127, PETRI_TRANSITIONS=213} [2024-10-13 07:09:00,638 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 63 predicate places. [2024-10-13 07:09:00,638 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 213 transitions, 1268 flow [2024-10-13 07:09:00,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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 07:09:00,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:00,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:00,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:09:00,640 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 07:09:00,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1903305674, now seen corresponding path program 7 times [2024-10-13 07:09:00,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:00,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423420010] [2024-10-13 07:09:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:00,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:00,879 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 07:09:00,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:00,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423420010] [2024-10-13 07:09:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423420010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:00,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:00,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:09:00,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635269780] [2024-10-13 07:09:00,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:00,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:00,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:00,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:00,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:09:00,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-10-13 07:09:00,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 213 transitions, 1268 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 07:09:00,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:00,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-10-13 07:09:00,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:05,855 INFO L124 PetriNetUnfolderBase]: 27567/44469 cut-off events. [2024-10-13 07:09:05,855 INFO L125 PetriNetUnfolderBase]: For 60004/61190 co-relation queries the response was YES. [2024-10-13 07:09:06,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141754 conditions, 44469 events. 27567/44469 cut-off events. For 60004/61190 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 352663 event pairs, 8558 based on Foata normal form. 326/43131 useless extension candidates. Maximal degree in co-relation 133900. Up to 10554 conditions per place. [2024-10-13 07:09:06,391 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 289 selfloop transitions, 31 changer transitions 10/421 dead transitions. [2024-10-13 07:09:06,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 421 transitions, 2954 flow [2024-10-13 07:09:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 421 transitions. [2024-10-13 07:09:06,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6598746081504702 [2024-10-13 07:09:06,396 INFO L175 Difference]: Start difference. First operand has 127 places, 213 transitions, 1268 flow. Second operand 11 states and 421 transitions. [2024-10-13 07:09:06,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 421 transitions, 2954 flow [2024-10-13 07:09:07,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 421 transitions, 2834 flow, removed 60 selfloop flow, removed 0 redundant places. [2024-10-13 07:09:07,330 INFO L231 Difference]: Finished difference. Result has 141 places, 220 transitions, 1342 flow [2024-10-13 07:09:07,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1342, PETRI_PLACES=141, PETRI_TRANSITIONS=220} [2024-10-13 07:09:07,332 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 77 predicate places. [2024-10-13 07:09:07,332 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 220 transitions, 1342 flow [2024-10-13 07:09:07,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 07:09:07,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:07,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:07,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:09:07,333 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 07:09:07,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:07,333 INFO L85 PathProgramCache]: Analyzing trace with hash -600199518, now seen corresponding path program 8 times [2024-10-13 07:09:07,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:07,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554804698] [2024-10-13 07:09:07,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:07,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:07,747 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 07:09:07,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554804698] [2024-10-13 07:09:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554804698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:07,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:09:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281579671] [2024-10-13 07:09:07,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:07,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:07,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:09:07,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-10-13 07:09:07,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 220 transitions, 1342 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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 07:09:07,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:07,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-10-13 07:09:07,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:14,223 INFO L124 PetriNetUnfolderBase]: 32589/56855 cut-off events. [2024-10-13 07:09:14,224 INFO L125 PetriNetUnfolderBase]: For 83443/86121 co-relation queries the response was YES. [2024-10-13 07:09:15,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182569 conditions, 56855 events. 32589/56855 cut-off events. For 83443/86121 co-relation queries the response was YES. Maximal size of possible extension queue 1710. Compared 512992 event pairs, 4628 based on Foata normal form. 1196/56696 useless extension candidates. Maximal degree in co-relation 181051. Up to 12748 conditions per place. [2024-10-13 07:09:15,182 INFO L140 encePairwiseOnDemand]: 41/58 looper letters, 307 selfloop transitions, 175 changer transitions 4/552 dead transitions. [2024-10-13 07:09:15,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 552 transitions, 3860 flow [2024-10-13 07:09:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 07:09:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 07:09:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 649 transitions. [2024-10-13 07:09:15,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6582150101419878 [2024-10-13 07:09:15,185 INFO L175 Difference]: Start difference. First operand has 141 places, 220 transitions, 1342 flow. Second operand 17 states and 649 transitions. [2024-10-13 07:09:15,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 552 transitions, 3860 flow [2024-10-13 07:09:16,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 552 transitions, 3791 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-10-13 07:09:16,739 INFO L231 Difference]: Finished difference. Result has 166 places, 332 transitions, 2731 flow [2024-10-13 07:09:16,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2731, PETRI_PLACES=166, PETRI_TRANSITIONS=332} [2024-10-13 07:09:16,740 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 102 predicate places. [2024-10-13 07:09:16,740 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 332 transitions, 2731 flow [2024-10-13 07:09:16,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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 07:09:16,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:16,741 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:16,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 07:09:16,741 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 07:09:16,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1862307334, now seen corresponding path program 9 times [2024-10-13 07:09:16,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:16,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974110719] [2024-10-13 07:09:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:17,140 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 07:09:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974110719] [2024-10-13 07:09:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974110719] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:17,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:09:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709285656] [2024-10-13 07:09:17,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:17,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:09:17,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:09:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:09:17,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-10-13 07:09:17,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 332 transitions, 2731 flow. Second operand has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 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 07:09:17,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:17,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-10-13 07:09:17,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:26,381 INFO L124 PetriNetUnfolderBase]: 36124/63044 cut-off events. [2024-10-13 07:09:26,382 INFO L125 PetriNetUnfolderBase]: For 255400/261574 co-relation queries the response was YES. [2024-10-13 07:09:27,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252423 conditions, 63044 events. 36124/63044 cut-off events. For 255400/261574 co-relation queries the response was YES. Maximal size of possible extension queue 1934. Compared 578424 event pairs, 12880 based on Foata normal form. 1230/62265 useless extension candidates. Maximal degree in co-relation 250480. Up to 24949 conditions per place. [2024-10-13 07:09:27,287 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 345 selfloop transitions, 96 changer transitions 12/528 dead transitions. [2024-10-13 07:09:27,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 528 transitions, 5164 flow [2024-10-13 07:09:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 320 transitions. [2024-10-13 07:09:27,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6130268199233716 [2024-10-13 07:09:27,289 INFO L175 Difference]: Start difference. First operand has 166 places, 332 transitions, 2731 flow. Second operand 9 states and 320 transitions. [2024-10-13 07:09:27,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 528 transitions, 5164 flow [2024-10-13 07:09:29,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 528 transitions, 5065 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-10-13 07:09:29,991 INFO L231 Difference]: Finished difference. Result has 179 places, 381 transitions, 3576 flow [2024-10-13 07:09:29,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3576, PETRI_PLACES=179, PETRI_TRANSITIONS=381} [2024-10-13 07:09:29,993 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 115 predicate places. [2024-10-13 07:09:29,994 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 381 transitions, 3576 flow [2024-10-13 07:09:29,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 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 07:09:29,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:29,994 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:29,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 07:09:29,995 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 07:09:29,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:29,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1179596126, now seen corresponding path program 10 times [2024-10-13 07:09:29,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:29,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928325962] [2024-10-13 07:09:29,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:29,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:30,461 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 07:09:30,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:30,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928325962] [2024-10-13 07:09:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928325962] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:30,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:30,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:09:30,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275991619] [2024-10-13 07:09:30,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:30,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:30,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:30,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:30,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:09:30,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-13 07:09:30,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 381 transitions, 3576 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 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 07:09:30,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:30,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-13 07:09:30,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:42,020 INFO L124 PetriNetUnfolderBase]: 44695/78530 cut-off events. [2024-10-13 07:09:42,020 INFO L125 PetriNetUnfolderBase]: For 412538/419913 co-relation queries the response was YES. [2024-10-13 07:09:43,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330674 conditions, 78530 events. 44695/78530 cut-off events. For 412538/419913 co-relation queries the response was YES. Maximal size of possible extension queue 2420. Compared 742467 event pairs, 14977 based on Foata normal form. 889/77797 useless extension candidates. Maximal degree in co-relation 327913. Up to 55004 conditions per place. [2024-10-13 07:09:43,381 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 413 selfloop transitions, 95 changer transitions 9/577 dead transitions. [2024-10-13 07:09:43,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 577 transitions, 6293 flow [2024-10-13 07:09:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 357 transitions. [2024-10-13 07:09:43,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6155172413793103 [2024-10-13 07:09:43,382 INFO L175 Difference]: Start difference. First operand has 179 places, 381 transitions, 3576 flow. Second operand 10 states and 357 transitions. [2024-10-13 07:09:43,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 577 transitions, 6293 flow [2024-10-13 07:09:48,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 577 transitions, 6242 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-10-13 07:09:48,947 INFO L231 Difference]: Finished difference. Result has 194 places, 455 transitions, 4744 flow [2024-10-13 07:09:48,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=3539, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4744, PETRI_PLACES=194, PETRI_TRANSITIONS=455} [2024-10-13 07:09:48,948 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 130 predicate places. [2024-10-13 07:09:48,948 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 455 transitions, 4744 flow [2024-10-13 07:09:48,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 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 07:09:48,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:48,948 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:48,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 07:09:48,949 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 07:09:48,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:48,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1853221226, now seen corresponding path program 11 times [2024-10-13 07:09:48,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:48,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052401770] [2024-10-13 07:09:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:48,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat