./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/chl-collitem-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/chl-collitem-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:27:44,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:27:44,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:27:44,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:27:44,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:27:44,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:27:44,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:27:44,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:27:44,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:27:44,997 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:27:44,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:27:44,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:27:44,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:27:44,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:27:44,999 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:27:45,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:27:45,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:27:45,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:27:45,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:27:45,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:27:45,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:27:45,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:27:45,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:27:45,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:27:45,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:27:45,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:27:45,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:27:45,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:27:45,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:27:45,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:27:45,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:27:45,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:27:45,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:27:45,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:27:45,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:27:45,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:27:45,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:27:45,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:27:45,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:27:45,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:27:45,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:27:45,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:27:45,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab [2024-10-24 12:27:45,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:27:45,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:27:45,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:27:45,317 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:27:45,317 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:27:45,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c [2024-10-24 12:27:46,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:27:46,944 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:27:46,945 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c [2024-10-24 12:27:46,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c202c80ec/ced6a40471f24ac99b5d8f2f88dec0d7/FLAG5d8b186f3 [2024-10-24 12:27:46,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c202c80ec/ced6a40471f24ac99b5d8f2f88dec0d7 [2024-10-24 12:27:46,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:27:46,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:27:46,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:27:46,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:27:46,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:27:46,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:27:46" (1/1) ... [2024-10-24 12:27:46,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d50f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:46, skipping insertion in model container [2024-10-24 12:27:46,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:27:46" (1/1) ... [2024-10-24 12:27:47,020 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:27:47,212 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/chl-collitem-trans.wvr.c[3520,3533] [2024-10-24 12:27:47,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:27:47,228 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:27:47,247 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/chl-collitem-trans.wvr.c[3520,3533] [2024-10-24 12:27:47,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:27:47,268 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:27:47,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47 WrapperNode [2024-10-24 12:27:47,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:27:47,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:27:47,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:27:47,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:27:47,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,320 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 17, calls inlined = 39, statements flattened = 345 [2024-10-24 12:27:47,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:27:47,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:27:47,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:27:47,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:27:47,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,339 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,359 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]. [2024-10-24 12:27:47,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:27:47,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:27:47,395 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:27:47,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:27:47,396 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (1/1) ... [2024-10-24 12:27:47,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:27:47,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:27:47,434 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) [2024-10-24 12:27:47,436 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 [2024-10-24 12:27:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:27:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:27:47,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:27:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:27:47,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:27:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 12:27:47,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 12:27:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:27:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:27:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:27:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:27:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:27:47,472 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:27:47,577 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:27:47,578 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:27:48,166 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:27:48,166 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:27:48,763 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:27:48,764 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:27:48,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:27:48 BoogieIcfgContainer [2024-10-24 12:27:48,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:27:48,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:27:48,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:27:48,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:27:48,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:27:46" (1/3) ... [2024-10-24 12:27:48,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a60ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:27:48, skipping insertion in model container [2024-10-24 12:27:48,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:27:47" (2/3) ... [2024-10-24 12:27:48,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a60ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:27:48, skipping insertion in model container [2024-10-24 12:27:48,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:27:48" (3/3) ... [2024-10-24 12:27:48,776 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2024-10-24 12:27:48,795 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:27:48,796 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:27:48,796 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:27:48,886 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 12:27:48,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 71 flow [2024-10-24 12:27:48,962 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-10-24 12:27:48,963 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:27:48,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 0/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-24 12:27:48,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 25 transitions, 71 flow [2024-10-24 12:27:48,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 21 transitions, 60 flow [2024-10-24 12:27:48,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:27:48,989 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;@41e746c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:27:48,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:27:49,008 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:27:49,009 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-10-24 12:27:49,009 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:27:49,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:27:49,010 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] [2024-10-24 12:27:49,011 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)] === [2024-10-24 12:27:49,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:27:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1240816726, now seen corresponding path program 1 times [2024-10-24 12:27:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:27:49,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573446706] [2024-10-24 12:27:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:27:49,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:27:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:27:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:27:52,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:27:52,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573446706] [2024-10-24 12:27:52,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573446706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:27:52,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:27:52,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:27:52,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909117739] [2024-10-24 12:27:52,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:27:52,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:27:52,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:27:52,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:27:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:27:52,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-10-24 12:27:52,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:27:52,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:27:52,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-10-24 12:27:52,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:27:52,675 INFO L124 PetriNetUnfolderBase]: 178/331 cut-off events. [2024-10-24 12:27:52,676 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-24 12:27:52,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 331 events. 178/331 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1253 event pairs, 10 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 634. Up to 110 conditions per place. [2024-10-24 12:27:52,685 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 34 selfloop transitions, 6 changer transitions 8/52 dead transitions. [2024-10-24 12:27:52,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 248 flow [2024-10-24 12:27:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:27:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:27:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-10-24 12:27:52,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2024-10-24 12:27:52,700 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 60 flow. Second operand 6 states and 91 transitions. [2024-10-24 12:27:52,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 248 flow [2024-10-24 12:27:52,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 52 transitions, 216 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 12:27:52,709 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 81 flow [2024-10-24 12:27:52,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2024-10-24 12:27:52,714 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-10-24 12:27:52,716 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 81 flow [2024-10-24 12:27:52,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:27:52,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:27:52,717 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] [2024-10-24 12:27:52,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:27:52,718 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)] === [2024-10-24 12:27:52,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:27:52,718 INFO L85 PathProgramCache]: Analyzing trace with hash 983283916, now seen corresponding path program 2 times [2024-10-24 12:27:52,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:27:52,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956829262] [2024-10-24 12:27:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:27:52,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:27:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:27:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:27:55,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:27:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956829262] [2024-10-24 12:27:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956829262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:27:55,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:27:55,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:27:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188219399] [2024-10-24 12:27:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:27:55,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:27:55,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:27:55,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:27:55,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:27:55,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-10-24 12:27:55,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:27:55,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:27:55,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-10-24 12:27:55,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:27:55,465 INFO L124 PetriNetUnfolderBase]: 194/366 cut-off events. [2024-10-24 12:27:55,466 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-24 12:27:55,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 366 events. 194/366 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1501 event pairs, 28 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 857. Up to 151 conditions per place. [2024-10-24 12:27:55,469 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 33 selfloop transitions, 6 changer transitions 12/55 dead transitions. [2024-10-24 12:27:55,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 55 transitions, 262 flow [2024-10-24 12:27:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:27:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:27:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-10-24 12:27:55,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-10-24 12:27:55,472 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 81 flow. Second operand 6 states and 93 transitions. [2024-10-24 12:27:55,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 55 transitions, 262 flow [2024-10-24 12:27:55,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 55 transitions, 258 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 12:27:55,474 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 92 flow [2024-10-24 12:27:55,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2024-10-24 12:27:55,475 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-10-24 12:27:55,475 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 92 flow [2024-10-24 12:27:55,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:27:55,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:27:55,476 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] [2024-10-24 12:27:55,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:27:55,476 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)] === [2024-10-24 12:27:55,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:27:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash 376897736, now seen corresponding path program 3 times [2024-10-24 12:27:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:27:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537742707] [2024-10-24 12:27:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:27:55,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:27:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:27:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:27:57,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:27:57,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537742707] [2024-10-24 12:27:57,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537742707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:27:57,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:27:57,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:27:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110731518] [2024-10-24 12:27:57,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:27:57,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:27:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:27:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:27:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:27:57,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-10-24 12:27:57,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:27:57,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:27:57,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-10-24 12:27:57,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:27:57,735 INFO L124 PetriNetUnfolderBase]: 189/369 cut-off events. [2024-10-24 12:27:57,736 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-10-24 12:27:57,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 369 events. 189/369 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1544 event pairs, 16 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 914. Up to 190 conditions per place. [2024-10-24 12:27:57,742 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 31 selfloop transitions, 5 changer transitions 11/51 dead transitions. [2024-10-24 12:27:57,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 261 flow [2024-10-24 12:27:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:27:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:27:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-10-24 12:27:57,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-24 12:27:57,746 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 92 flow. Second operand 6 states and 90 transitions. [2024-10-24 12:27:57,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 261 flow [2024-10-24 12:27:57,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 237 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-24 12:27:57,751 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 92 flow [2024-10-24 12:27:57,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2024-10-24 12:27:57,753 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-10-24 12:27:57,753 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 92 flow [2024-10-24 12:27:57,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:27:57,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:27:57,755 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] [2024-10-24 12:27:57,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:27:57,755 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)] === [2024-10-24 12:27:57,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:27:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1330360858, now seen corresponding path program 4 times [2024-10-24 12:27:57,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:27:57,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815727551] [2024-10-24 12:27:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:27:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:27:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:27:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:27:59,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:27:59,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815727551] [2024-10-24 12:27:59,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815727551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:27:59,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:27:59,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:27:59,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934698214] [2024-10-24 12:27:59,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:27:59,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:27:59,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:27:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:27:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:27:59,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-10-24 12:27:59,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:27:59,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:27:59,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-10-24 12:27:59,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:27:59,987 INFO L124 PetriNetUnfolderBase]: 138/270 cut-off events. [2024-10-24 12:27:59,988 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-10-24 12:27:59,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 270 events. 138/270 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1002 event pairs, 9 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 669. Up to 93 conditions per place. [2024-10-24 12:27:59,992 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 30 selfloop transitions, 5 changer transitions 10/49 dead transitions. [2024-10-24 12:27:59,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 248 flow [2024-10-24 12:27:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:27:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:27:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-10-24 12:27:59,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-10-24 12:27:59,996 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 92 flow. Second operand 6 states and 88 transitions. [2024-10-24 12:27:59,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 248 flow [2024-10-24 12:27:59,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 233 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-24 12:28:00,000 INFO L231 Difference]: Finished difference. Result has 42 places, 24 transitions, 96 flow [2024-10-24 12:28:00,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2024-10-24 12:28:00,001 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-10-24 12:28:00,002 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 96 flow [2024-10-24 12:28:00,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:00,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:00,004 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] [2024-10-24 12:28:00,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:28:00,005 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)] === [2024-10-24 12:28:00,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash -856311298, now seen corresponding path program 5 times [2024-10-24 12:28:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:00,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832741368] [2024-10-24 12:28:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:00,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:28:01,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:01,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832741368] [2024-10-24 12:28:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832741368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:01,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:01,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:01,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753825978] [2024-10-24 12:28:01,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:01,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:01,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-10-24 12:28:01,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:01,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:01,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-10-24 12:28:01,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:01,802 INFO L124 PetriNetUnfolderBase]: 106/213 cut-off events. [2024-10-24 12:28:01,802 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-10-24 12:28:01,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 213 events. 106/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 730 event pairs, 20 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 562. Up to 109 conditions per place. [2024-10-24 12:28:01,804 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 19 selfloop transitions, 3 changer transitions 16/42 dead transitions. [2024-10-24 12:28:01,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 220 flow [2024-10-24 12:28:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:28:01,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:28:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-10-24 12:28:01,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-10-24 12:28:01,808 INFO L175 Difference]: Start difference. First operand has 42 places, 24 transitions, 96 flow. Second operand 6 states and 81 transitions. [2024-10-24 12:28:01,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 220 flow [2024-10-24 12:28:01,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 215 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:01,810 INFO L231 Difference]: Finished difference. Result has 44 places, 21 transitions, 77 flow [2024-10-24 12:28:01,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=44, PETRI_TRANSITIONS=21} [2024-10-24 12:28:01,812 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-10-24 12:28:01,813 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 21 transitions, 77 flow [2024-10-24 12:28:01,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:01,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:01,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:01,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:28:01,814 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:01,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash 669106004, now seen corresponding path program 6 times [2024-10-24 12:28:01,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:01,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587398459] [2024-10-24 12:28:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:01,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:28:03,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:03,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587398459] [2024-10-24 12:28:03,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587398459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:03,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:03,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:03,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026294874] [2024-10-24 12:28:03,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:03,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:03,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:03,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:03,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-10-24 12:28:03,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 21 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:03,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:03,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-10-24 12:28:03,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:03,737 INFO L124 PetriNetUnfolderBase]: 42/89 cut-off events. [2024-10-24 12:28:03,738 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-10-24 12:28:03,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 89 events. 42/89 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 184 event pairs, 0 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 240. Up to 54 conditions per place. [2024-10-24 12:28:03,739 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-10-24 12:28:03,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 132 flow [2024-10-24 12:28:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:28:03,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:28:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-10-24 12:28:03,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-10-24 12:28:03,741 INFO L175 Difference]: Start difference. First operand has 44 places, 21 transitions, 77 flow. Second operand 6 states and 66 transitions. [2024-10-24 12:28:03,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 132 flow [2024-10-24 12:28:03,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 115 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-10-24 12:28:03,742 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-10-24 12:28:03,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-10-24 12:28:03,743 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-10-24 12:28:03,743 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-10-24 12:28:03,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:03,746 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-24 12:28:03,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-24 12:28:03,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-24 12:28:03,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-24 12:28:03,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:28:03,748 INFO L407 BasicCegarLoop]: Path program histogram: [6] [2024-10-24 12:28:03,751 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 12:28:03,751 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 12:28:03,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:28:03 BasicIcfg [2024-10-24 12:28:03,759 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 12:28:03,760 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 12:28:03,760 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 12:28:03,760 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 12:28:03,761 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:27:48" (3/4) ... [2024-10-24 12:28:03,763 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 12:28:03,766 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-24 12:28:03,766 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-24 12:28:03,766 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-24 12:28:03,773 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 96 nodes and edges [2024-10-24 12:28:03,773 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-24 12:28:03,774 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-24 12:28:03,774 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 12:28:03,886 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 12:28:03,886 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 12:28:03,887 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 12:28:03,887 INFO L158 Benchmark]: Toolchain (without parser) took 16909.05ms. Allocated memory was 184.5MB in the beginning and 708.8MB in the end (delta: 524.3MB). Free memory was 112.8MB in the beginning and 595.0MB in the end (delta: -482.2MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2024-10-24 12:28:03,887 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:28:03,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.75ms. Allocated memory is still 184.5MB. Free memory was 112.6MB in the beginning and 98.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 12:28:03,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.25ms. Allocated memory is still 184.5MB. Free memory was 98.9MB in the beginning and 96.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:28:03,889 INFO L158 Benchmark]: Boogie Preprocessor took 72.45ms. Allocated memory is still 184.5MB. Free memory was 95.8MB in the beginning and 92.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:28:03,889 INFO L158 Benchmark]: RCFGBuilder took 1370.46ms. Allocated memory was 184.5MB in the beginning and 281.0MB in the end (delta: 96.5MB). Free memory was 92.7MB in the beginning and 214.2MB in the end (delta: -121.5MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2024-10-24 12:28:03,889 INFO L158 Benchmark]: TraceAbstraction took 14992.28ms. Allocated memory was 281.0MB in the beginning and 708.8MB in the end (delta: 427.8MB). Free memory was 213.1MB in the beginning and 600.3MB in the end (delta: -387.1MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2024-10-24 12:28:03,890 INFO L158 Benchmark]: Witness Printer took 126.80ms. Allocated memory is still 708.8MB. Free memory was 600.3MB in the beginning and 595.0MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-24 12:28:03,891 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.75ms. Allocated memory is still 184.5MB. Free memory was 112.6MB in the beginning and 98.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.25ms. Allocated memory is still 184.5MB. Free memory was 98.9MB in the beginning and 96.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.45ms. Allocated memory is still 184.5MB. Free memory was 95.8MB in the beginning and 92.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1370.46ms. Allocated memory was 184.5MB in the beginning and 281.0MB in the end (delta: 96.5MB). Free memory was 92.7MB in the beginning and 214.2MB in the end (delta: -121.5MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * TraceAbstraction took 14992.28ms. Allocated memory was 281.0MB in the beginning and 708.8MB in the end (delta: 427.8MB). Free memory was 213.1MB in the beginning and 600.3MB in the end (delta: -387.1MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. * Witness Printer took 126.80ms. Allocated memory is still 708.8MB. Free memory was 600.3MB in the beginning and 595.0MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 100]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 184 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 520 IncrementalHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 3708 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 12:28:03,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE