./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix009.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix009.opt.i -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 f715026b68e9c0bb30969d2f1713e0cf615763357ccfdf3c82e016d450119958 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:09:18,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:09:19,004 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:09:19,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:09:19,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:09:19,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:09:19,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:09:19,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:09:19,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:09:19,037 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:09:19,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:09:19,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:09:19,038 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:09:19,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:09:19,040 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:09:19,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:09:19,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:09:19,041 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:09:19,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:09:19,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:09:19,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:09:19,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:09:19,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:09:19,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:09:19,045 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:09:19,045 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:09:19,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:09:19,045 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:09:19,045 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:09:19,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:09:19,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:09:19,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:09:19,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:09:19,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:09:19,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:09:19,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:09:19,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:09:19,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:09:19,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:09:19,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:09:19,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:09:19,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:09:19,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f715026b68e9c0bb30969d2f1713e0cf615763357ccfdf3c82e016d450119958 [2024-11-16 19:09:19,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:09:19,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:09:19,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:09:19,289 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:09:19,289 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:09:19,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix009.opt.i [2024-11-16 19:09:20,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:09:20,840 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:09:20,846 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix009.opt.i [2024-11-16 19:09:20,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac6f8d9d/8ec3f4a3db0b438b9cfbb6d4d11e5706/FLAG6f79b318f [2024-11-16 19:09:20,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac6f8d9d/8ec3f4a3db0b438b9cfbb6d4d11e5706 [2024-11-16 19:09:20,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:09:20,878 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:09:20,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:09:20,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:09:20,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:09:20,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:09:20" (1/1) ... [2024-11-16 19:09:20,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590df03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:20, skipping insertion in model container [2024-11-16 19:09:20,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:09:20" (1/1) ... [2024-11-16 19:09:20,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:09:21,120 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix009.opt.i[987,1000] [2024-11-16 19:09:21,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:09:21,300 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:09:21,317 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix009.opt.i[987,1000] [2024-11-16 19:09:21,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:09:21,391 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:09:21,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21 WrapperNode [2024-11-16 19:09:21,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:09:21,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:09:21,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:09:21,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:09:21,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,450 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 129 [2024-11-16 19:09:21,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:09:21,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:09:21,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:09:21,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:09:21,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,477 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:09:21,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,482 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:09:21,491 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:09:21,491 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:09:21,491 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:09:21,492 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (1/1) ... [2024-11-16 19:09:21,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:09:21,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:09:21,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:09:21,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:09:21,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:09:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:09:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:09:21,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:09:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:09:21,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:09:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:09:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:09:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:09:21,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:09:21,579 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:09:21,701 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:09:21,703 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:09:21,959 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:09:21,960 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:09:22,161 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:09:22,161 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:09:22,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:09:22 BoogieIcfgContainer [2024-11-16 19:09:22,162 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:09:22,164 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:09:22,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:09:22,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:09:22,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:09:20" (1/3) ... [2024-11-16 19:09:22,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160f3ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:09:22, skipping insertion in model container [2024-11-16 19:09:22,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:21" (2/3) ... [2024-11-16 19:09:22,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160f3ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:09:22, skipping insertion in model container [2024-11-16 19:09:22,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:09:22" (3/3) ... [2024-11-16 19:09:22,171 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-11-16 19:09:22,186 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:09:22,188 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:09:22,188 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:09:22,254 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:09:22,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 74 flow [2024-11-16 19:09:22,309 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2024-11-16 19:09:22,309 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:09:22,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 1/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-16 19:09:22,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 74 flow [2024-11-16 19:09:22,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 68 flow [2024-11-16 19:09:22,329 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:09:22,337 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;@36ac9efa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:09:22,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:09:22,342 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:09:22,342 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-16 19:09:22,343 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:09:22,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:22,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-16 19:09:22,344 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:22,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2030707486, now seen corresponding path program 1 times [2024-11-16 19:09:22,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:22,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223226774] [2024-11-16 19:09:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:22,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:22,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223226774] [2024-11-16 19:09:22,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223226774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:22,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:22,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:09:22,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359039885] [2024-11-16 19:09:22,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:22,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:09:22,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:09:22,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:09:22,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-16 19:09:22,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:22,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:22,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-16 19:09:22,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:23,161 INFO L124 PetriNetUnfolderBase]: 832/1371 cut-off events. [2024-11-16 19:09:23,161 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:09:23,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 1371 events. 832/1371 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6586 event pairs, 70 based on Foata normal form. 56/1425 useless extension candidates. Maximal degree in co-relation 2736. Up to 1195 conditions per place. [2024-11-16 19:09:23,171 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 36 selfloop transitions, 2 changer transitions 2/44 dead transitions. [2024-11-16 19:09:23,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 174 flow [2024-11-16 19:09:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:09:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:09:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-11-16 19:09:23,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2024-11-16 19:09:23,184 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 61 transitions. [2024-11-16 19:09:23,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 174 flow [2024-11-16 19:09:23,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:09:23,188 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2024-11-16 19:09:23,190 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-11-16 19:09:23,194 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-16 19:09:23,194 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2024-11-16 19:09:23,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:23,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:23,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:23,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:09:23,195 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:23,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1532694454, now seen corresponding path program 1 times [2024-11-16 19:09:23,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:23,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964975106] [2024-11-16 19:09:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:23,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964975106] [2024-11-16 19:09:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964975106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:23,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:23,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:09:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57400926] [2024-11-16 19:09:23,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:23,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:09:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:09:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:09:23,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-16 19:09:23,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:23,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:23,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-16 19:09:23,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:23,807 INFO L124 PetriNetUnfolderBase]: 1025/1743 cut-off events. [2024-11-16 19:09:23,808 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-16 19:09:23,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3539 conditions, 1743 events. 1025/1743 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8776 event pairs, 389 based on Foata normal form. 0/1692 useless extension candidates. Maximal degree in co-relation 3529. Up to 1076 conditions per place. [2024-11-16 19:09:23,814 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 32 selfloop transitions, 3 changer transitions 55/93 dead transitions. [2024-11-16 19:09:23,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 93 transitions, 388 flow [2024-11-16 19:09:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:09:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:09:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-11-16 19:09:23,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-16 19:09:23,821 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 8 states and 132 transitions. [2024-11-16 19:09:23,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 93 transitions, 388 flow [2024-11-16 19:09:23,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 93 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:09:23,826 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 93 flow [2024-11-16 19:09:23,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=93, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2024-11-16 19:09:23,827 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2024-11-16 19:09:23,827 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 93 flow [2024-11-16 19:09:23,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:23,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:23,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:23,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:09:23,828 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:23,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1520651892, now seen corresponding path program 1 times [2024-11-16 19:09:23,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:23,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136063459] [2024-11-16 19:09:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:23,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:24,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136063459] [2024-11-16 19:09:24,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136063459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:24,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:24,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:09:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914372921] [2024-11-16 19:09:24,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:24,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:09:24,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:24,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:09:24,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:09:24,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-16 19:09:24,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:24,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:24,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-16 19:09:24,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:24,425 INFO L124 PetriNetUnfolderBase]: 727/1247 cut-off events. [2024-11-16 19:09:24,426 INFO L125 PetriNetUnfolderBase]: For 667/667 co-relation queries the response was YES. [2024-11-16 19:09:24,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 1247 events. 727/1247 cut-off events. For 667/667 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5654 event pairs, 403 based on Foata normal form. 40/1286 useless extension candidates. Maximal degree in co-relation 3017. Up to 765 conditions per place. [2024-11-16 19:09:24,433 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 34 selfloop transitions, 3 changer transitions 33/73 dead transitions. [2024-11-16 19:09:24,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 73 transitions, 345 flow [2024-11-16 19:09:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:09:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:09:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-11-16 19:09:24,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4588744588744589 [2024-11-16 19:09:24,435 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 93 flow. Second operand 7 states and 106 transitions. [2024-11-16 19:09:24,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 73 transitions, 345 flow [2024-11-16 19:09:24,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 73 transitions, 328 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-16 19:09:24,440 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 103 flow [2024-11-16 19:09:24,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=103, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2024-11-16 19:09:24,441 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-16 19:09:24,441 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 103 flow [2024-11-16 19:09:24,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:24,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:24,442 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:24,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:09:24,442 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:24,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash -811509060, now seen corresponding path program 1 times [2024-11-16 19:09:24,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:24,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739098132] [2024-11-16 19:09:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:24,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:24,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:24,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739098132] [2024-11-16 19:09:24,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739098132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:24,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:24,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:09:24,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831533253] [2024-11-16 19:09:24,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:24,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:09:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:09:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:09:24,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-16 19:09:24,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:24,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:24,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-16 19:09:24,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:24,880 INFO L124 PetriNetUnfolderBase]: 655/1125 cut-off events. [2024-11-16 19:09:24,880 INFO L125 PetriNetUnfolderBase]: For 910/910 co-relation queries the response was YES. [2024-11-16 19:09:24,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 1125 events. 655/1125 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4963 event pairs, 169 based on Foata normal form. 35/1159 useless extension candidates. Maximal degree in co-relation 2815. Up to 731 conditions per place. [2024-11-16 19:09:24,886 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 33 selfloop transitions, 3 changer transitions 31/70 dead transitions. [2024-11-16 19:09:24,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 347 flow [2024-11-16 19:09:24,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:09:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:09:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-11-16 19:09:24,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2024-11-16 19:09:24,889 INFO L175 Difference]: Start difference. First operand has 47 places, 29 transitions, 103 flow. Second operand 7 states and 103 transitions. [2024-11-16 19:09:24,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 347 flow [2024-11-16 19:09:24,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 317 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-16 19:09:24,894 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 104 flow [2024-11-16 19:09:24,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2024-11-16 19:09:24,895 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-11-16 19:09:24,896 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 104 flow [2024-11-16 19:09:24,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:24,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:24,896 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:24,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:09:24,897 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:24,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:24,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1231956310, now seen corresponding path program 1 times [2024-11-16 19:09:24,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:24,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566694660] [2024-11-16 19:09:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:24,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:25,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:25,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566694660] [2024-11-16 19:09:25,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566694660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:25,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:25,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:09:25,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358931055] [2024-11-16 19:09:25,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:25,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:09:25,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:09:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:09:25,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-16 19:09:25,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:25,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:25,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-16 19:09:25,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:25,211 INFO L124 PetriNetUnfolderBase]: 401/731 cut-off events. [2024-11-16 19:09:25,212 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-16 19:09:25,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 731 events. 401/731 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3004 event pairs, 125 based on Foata normal form. 56/786 useless extension candidates. Maximal degree in co-relation 1768. Up to 304 conditions per place. [2024-11-16 19:09:25,216 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 49 selfloop transitions, 4 changer transitions 1/57 dead transitions. [2024-11-16 19:09:25,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 290 flow [2024-11-16 19:09:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:09:25,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:09:25,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-16 19:09:25,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-16 19:09:25,217 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 104 flow. Second operand 4 states and 78 transitions. [2024-11-16 19:09:25,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 290 flow [2024-11-16 19:09:25,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 262 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-16 19:09:25,219 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 110 flow [2024-11-16 19:09:25,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-11-16 19:09:25,220 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-11-16 19:09:25,220 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 110 flow [2024-11-16 19:09:25,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:25,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:25,221 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] [2024-11-16 19:09:25,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:09:25,221 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:25,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash -511480144, now seen corresponding path program 1 times [2024-11-16 19:09:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:25,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947664295] [2024-11-16 19:09:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:25,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:25,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947664295] [2024-11-16 19:09:25,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947664295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:25,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:25,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:09:25,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435076102] [2024-11-16 19:09:25,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:25,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:09:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:25,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:09:25,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:09:25,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-16 19:09:25,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:25,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:25,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-16 19:09:25,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:25,558 INFO L124 PetriNetUnfolderBase]: 210/396 cut-off events. [2024-11-16 19:09:25,558 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-16 19:09:25,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 396 events. 210/396 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1346 event pairs, 84 based on Foata normal form. 26/421 useless extension candidates. Maximal degree in co-relation 1001. Up to 161 conditions per place. [2024-11-16 19:09:25,560 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 39 selfloop transitions, 6 changer transitions 1/49 dead transitions. [2024-11-16 19:09:25,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 249 flow [2024-11-16 19:09:25,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:09:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:09:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-16 19:09:25,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46060606060606063 [2024-11-16 19:09:25,562 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 110 flow. Second operand 5 states and 76 transitions. [2024-11-16 19:09:25,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 249 flow [2024-11-16 19:09:25,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 226 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-16 19:09:25,563 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 114 flow [2024-11-16 19:09:25,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-11-16 19:09:25,564 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-11-16 19:09:25,564 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 114 flow [2024-11-16 19:09:25,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:25,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:25,564 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] [2024-11-16 19:09:25,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:09:25,564 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:25,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1280291266, now seen corresponding path program 1 times [2024-11-16 19:09:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:25,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52108087] [2024-11-16 19:09:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:25,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:25,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:25,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52108087] [2024-11-16 19:09:25,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52108087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:25,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:25,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:09:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126538640] [2024-11-16 19:09:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:25,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:09:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:09:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:09:25,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-16 19:09:25,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-11-16 19:09:25,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:25,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-16 19:09:25,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:26,002 INFO L124 PetriNetUnfolderBase]: 259/494 cut-off events. [2024-11-16 19:09:26,002 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2024-11-16 19:09:26,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 494 events. 259/494 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1834 event pairs, 51 based on Foata normal form. 4/497 useless extension candidates. Maximal degree in co-relation 1236. Up to 285 conditions per place. [2024-11-16 19:09:26,005 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 40 selfloop transitions, 9 changer transitions 14/66 dead transitions. [2024-11-16 19:09:26,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 358 flow [2024-11-16 19:09:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:09:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:09:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-16 19:09:26,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-11-16 19:09:26,006 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 114 flow. Second operand 7 states and 94 transitions. [2024-11-16 19:09:26,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 358 flow [2024-11-16 19:09:26,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 66 transitions, 301 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-16 19:09:26,008 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 142 flow [2024-11-16 19:09:26,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-11-16 19:09:26,009 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-16 19:09:26,011 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 142 flow [2024-11-16 19:09:26,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-11-16 19:09:26,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:26,011 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] [2024-11-16 19:09:26,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:09:26,012 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:26,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:26,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1649939646, now seen corresponding path program 2 times [2024-11-16 19:09:26,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:26,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294121863] [2024-11-16 19:09:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:26,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:26,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:26,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294121863] [2024-11-16 19:09:26,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294121863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:26,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:26,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:09:26,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548101380] [2024-11-16 19:09:26,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:26,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:09:26,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:26,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:09:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:09:26,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-16 19:09:26,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:26,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:26,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-16 19:09:26,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:26,506 INFO L124 PetriNetUnfolderBase]: 313/600 cut-off events. [2024-11-16 19:09:26,506 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-11-16 19:09:26,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 600 events. 313/600 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2391 event pairs, 81 based on Foata normal form. 4/603 useless extension candidates. Maximal degree in co-relation 1472. Up to 269 conditions per place. [2024-11-16 19:09:26,509 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 28 selfloop transitions, 3 changer transitions 35/69 dead transitions. [2024-11-16 19:09:26,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 361 flow [2024-11-16 19:09:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:09:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:09:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-11-16 19:09:26,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-11-16 19:09:26,510 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 142 flow. Second operand 8 states and 102 transitions. [2024-11-16 19:09:26,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 361 flow [2024-11-16 19:09:26,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 355 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-16 19:09:26,512 INFO L231 Difference]: Finished difference. Result has 53 places, 29 transitions, 105 flow [2024-11-16 19:09:26,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=105, PETRI_PLACES=53, PETRI_TRANSITIONS=29} [2024-11-16 19:09:26,512 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2024-11-16 19:09:26,513 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 29 transitions, 105 flow [2024-11-16 19:09:26,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:26,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:26,513 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] [2024-11-16 19:09:26,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:09:26,516 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:26,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash -705757064, now seen corresponding path program 3 times [2024-11-16 19:09:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763337614] [2024-11-16 19:09:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:26,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:28,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:28,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763337614] [2024-11-16 19:09:28,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763337614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:28,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:28,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 19:09:28,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972129959] [2024-11-16 19:09:28,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:28,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:09:28,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:28,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:09:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:09:28,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-16 19:09:28,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 29 transitions, 105 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:28,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:28,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-16 19:09:28,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:28,570 INFO L124 PetriNetUnfolderBase]: 149/310 cut-off events. [2024-11-16 19:09:28,570 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-11-16 19:09:28,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 310 events. 149/310 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1031 event pairs, 16 based on Foata normal form. 4/314 useless extension candidates. Maximal degree in co-relation 738. Up to 124 conditions per place. [2024-11-16 19:09:28,572 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 29 selfloop transitions, 5 changer transitions 23/60 dead transitions. [2024-11-16 19:09:28,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 309 flow [2024-11-16 19:09:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:09:28,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:09:28,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-11-16 19:09:28,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-11-16 19:09:28,573 INFO L175 Difference]: Start difference. First operand has 53 places, 29 transitions, 105 flow. Second operand 10 states and 104 transitions. [2024-11-16 19:09:28,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 309 flow [2024-11-16 19:09:28,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 271 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-11-16 19:09:28,574 INFO L231 Difference]: Finished difference. Result has 52 places, 29 transitions, 100 flow [2024-11-16 19:09:28,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=29} [2024-11-16 19:09:28,575 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-11-16 19:09:28,575 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 29 transitions, 100 flow [2024-11-16 19:09:28,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:28,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:28,575 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] [2024-11-16 19:09:28,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 19:09:28,576 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:09:28,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash 805980090, now seen corresponding path program 4 times [2024-11-16 19:09:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:28,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010014119] [2024-11-16 19:09:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:28,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:09:28,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:09:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:09:28,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:09:28,705 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:09:28,708 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-11-16 19:09:28,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-16 19:09:28,714 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-16 19:09:28,714 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-16 19:09:28,714 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-16 19:09:28,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 19:09:28,714 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:28,780 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-16 19:09:28,780 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 19:09:28,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:09:28 BasicIcfg [2024-11-16 19:09:28,786 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 19:09:28,787 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 19:09:28,787 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 19:09:28,787 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 19:09:28,788 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:09:22" (3/4) ... [2024-11-16 19:09:28,789 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-16 19:09:28,851 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 19:09:28,851 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 19:09:28,852 INFO L158 Benchmark]: Toolchain (without parser) took 7973.36ms. Allocated memory was 167.8MB in the beginning and 327.2MB in the end (delta: 159.4MB). Free memory was 95.9MB in the beginning and 104.6MB in the end (delta: -8.7MB). Peak memory consumption was 153.7MB. Max. memory is 16.1GB. [2024-11-16 19:09:28,852 INFO L158 Benchmark]: CDTParser took 0.98ms. Allocated memory is still 167.8MB. Free memory is still 121.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 19:09:28,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.35ms. Allocated memory is still 167.8MB. Free memory was 95.8MB in the beginning and 124.1MB in the end (delta: -28.3MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2024-11-16 19:09:28,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.56ms. Allocated memory is still 167.8MB. Free memory was 124.1MB in the beginning and 121.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:09:28,852 INFO L158 Benchmark]: Boogie Preprocessor took 39.74ms. Allocated memory is still 167.8MB. Free memory was 121.0MB in the beginning and 117.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 19:09:28,852 INFO L158 Benchmark]: IcfgBuilder took 671.21ms. Allocated memory is still 167.8MB. Free memory was 117.8MB in the beginning and 56.0MB in the end (delta: 61.9MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2024-11-16 19:09:28,853 INFO L158 Benchmark]: TraceAbstraction took 6622.97ms. Allocated memory was 167.8MB in the beginning and 327.2MB in the end (delta: 159.4MB). Free memory was 54.9MB in the beginning and 114.1MB in the end (delta: -59.2MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. [2024-11-16 19:09:28,853 INFO L158 Benchmark]: Witness Printer took 64.17ms. Allocated memory is still 327.2MB. Free memory was 114.1MB in the beginning and 104.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-16 19:09:28,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98ms. Allocated memory is still 167.8MB. Free memory is still 121.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.35ms. Allocated memory is still 167.8MB. Free memory was 95.8MB in the beginning and 124.1MB in the end (delta: -28.3MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.56ms. Allocated memory is still 167.8MB. Free memory was 124.1MB in the beginning and 121.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.74ms. Allocated memory is still 167.8MB. Free memory was 121.0MB in the beginning and 117.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 671.21ms. Allocated memory is still 167.8MB. Free memory was 117.8MB in the beginning and 56.0MB in the end (delta: 61.9MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6622.97ms. Allocated memory was 167.8MB in the beginning and 327.2MB in the end (delta: 159.4MB). Free memory was 54.9MB in the beginning and 114.1MB in the end (delta: -59.2MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. * Witness Printer took 64.17ms. Allocated memory is still 327.2MB. Free memory was 114.1MB in the beginning and 104.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p0_EBX = 0; [L715] 0 int __unbuffered_p1_EAX = 0; [L717] 0 int __unbuffered_p1_EBX = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L723] 0 int y = 0; [L724] 0 _Bool y$flush_delayed; [L725] 0 int y$mem_tmp; [L726] 0 _Bool y$r_buff0_thd0; [L727] 0 _Bool y$r_buff0_thd1; [L728] 0 _Bool y$r_buff0_thd2; [L729] 0 _Bool y$r_buff1_thd0; [L730] 0 _Bool y$r_buff1_thd1; [L731] 0 _Bool y$r_buff1_thd2; [L732] 0 _Bool y$read_delayed; [L733] 0 int *y$read_delayed_var; [L734] 0 int y$w_buff0; [L735] 0 _Bool y$w_buff0_used; [L736] 0 int y$w_buff1; [L737] 0 _Bool y$w_buff1_used; [L739] 0 int z = 0; [L740] 0 _Bool weak$$choice0; [L741] 0 _Bool weak$$choice2; [L831] 0 pthread_t t243; [L832] FCALL, FORK 0 pthread_create(&t243, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t243=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L833] 0 pthread_t t244; [L834] FCALL, FORK 0 pthread_create(&t244, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t243=-1, t244=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L779] 2 y$w_buff1 = y$w_buff0 [L780] 2 y$w_buff0 = 1 [L781] 2 y$w_buff1_used = y$w_buff0_used [L782] 2 y$w_buff0_used = (_Bool)1 [L783] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L783] RET 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L784] 2 y$r_buff1_thd0 = y$r_buff0_thd0 [L785] 2 y$r_buff1_thd1 = y$r_buff0_thd1 [L786] 2 y$r_buff1_thd2 = y$r_buff0_thd2 [L787] 2 y$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L790] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L791] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L792] 2 y$flush_delayed = weak$$choice2 [L793] 2 y$mem_tmp = y [L794] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L795] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L796] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L797] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L798] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L799] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L800] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L801] 2 __unbuffered_p1_EAX = y [L802] 2 y = y$flush_delayed ? y$mem_tmp : y [L803] 2 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L806] 2 __unbuffered_p1_EBX = z VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L745] 1 z = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L748] 1 x = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L751] 1 __unbuffered_p0_EAX = x VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L754] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L755] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L756] 1 y$flush_delayed = weak$$choice2 [L757] 1 y$mem_tmp = y [L758] 1 y = !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L759] 1 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0)) [L760] 1 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1)) [L761] 1 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used)) [L762] 1 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L763] 1 y$r_buff0_thd1 = weak$$choice2 ? y$r_buff0_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1)) [L764] 1 y$r_buff1_thd1 = weak$$choice2 ? y$r_buff1_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L765] 1 __unbuffered_p0_EBX = y [L766] 1 y = y$flush_delayed ? y$mem_tmp : y [L767] 1 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L809] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L810] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L811] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L812] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L813] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L816] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L772] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L836] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t243=-1, t244=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L838] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L838] RET 0 assume_abort_if_not(main$tmp_guard0) [L840] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L841] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L842] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L843] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L844] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t243=-1, t244=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L847] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 1 && __unbuffered_p0_EBX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t243=-1, t244=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L849] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L19] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 832]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 locations, 5 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: 6.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 375 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 373 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1382 IncrementalHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 1 mSDtfsCounter, 1382 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, InterpolantAutomatonStates: 59, 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, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 1399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-16 19:09:28,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE