./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe033_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe033_tso.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 03e09f2995f610da86eeaa1f1ee03bc9ee01699bf21a2567d5a1129cd8929582 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:37:14,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:37:14,534 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:37:14,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:37:14,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:37:14,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:37:14,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:37:14,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:37:14,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:37:14,591 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:37:14,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:37:14,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:37:14,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:37:14,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:37:14,594 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:37:14,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:37:14,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:37:14,595 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:37:14,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:37:14,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:37:14,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:37:14,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:37:14,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:37:14,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:37:14,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:37:14,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:37:14,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:37:14,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:37:14,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:37:14,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:37:14,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:37:14,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:37:14,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:37:14,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:37:14,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:37:14,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:37:14,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:37:14,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:37:14,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:37:14,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:37:14,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:37:14,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:37:14,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e09f2995f610da86eeaa1f1ee03bc9ee01699bf21a2567d5a1129cd8929582 [2024-11-22 13:37:14,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:37:14,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:37:14,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:37:14,890 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:37:14,890 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:37:14,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe033_tso.i [2024-11-22 13:37:16,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:37:16,624 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:37:16,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe033_tso.i [2024-11-22 13:37:16,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb266616/9766ff4693ee47d0ad5f6c5021d49f41/FLAG78cd4e7bf [2024-11-22 13:37:16,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb266616/9766ff4693ee47d0ad5f6c5021d49f41 [2024-11-22 13:37:16,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:37:16,672 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:37:16,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:37:16,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:37:16,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:37:16,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:16" (1/1) ... [2024-11-22 13:37:16,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6e6aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:16, skipping insertion in model container [2024-11-22 13:37:16,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:16" (1/1) ... [2024-11-22 13:37:16,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:37:16,936 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/safe033_tso.i[945,958] [2024-11-22 13:37:17,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:37:17,107 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:37:17,123 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/safe033_tso.i[945,958] [2024-11-22 13:37:17,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:37:17,208 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:37:17,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17 WrapperNode [2024-11-22 13:37:17,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:37:17,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:37:17,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:37:17,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:37:17,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,258 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 49 [2024-11-22 13:37:17,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:37:17,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:37:17,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:37:17,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:37:17,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,283 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]. [2024-11-22 13:37:17,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:37:17,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:37:17,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:37:17,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:37:17,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (1/1) ... [2024-11-22 13:37:17,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:37:17,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:37:17,339 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) [2024-11-22 13:37:17,344 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 [2024-11-22 13:37:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:37:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:37:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-22 13:37:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-22 13:37:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-22 13:37:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-22 13:37:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:37:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:37:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:37:17,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:37:17,399 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:37:17,540 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:37:17,543 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:37:17,692 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:37:17,692 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:37:17,768 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:37:17,768 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 13:37:17,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:17 BoogieIcfgContainer [2024-11-22 13:37:17,769 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:37:17,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:37:17,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:37:17,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:37:17,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:37:16" (1/3) ... [2024-11-22 13:37:17,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b385a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:17, skipping insertion in model container [2024-11-22 13:37:17,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:17" (2/3) ... [2024-11-22 13:37:17,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b385a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:17, skipping insertion in model container [2024-11-22 13:37:17,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:17" (3/3) ... [2024-11-22 13:37:17,776 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-11-22 13:37:17,790 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:37:17,791 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:37:17,791 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:37:17,847 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 13:37:17,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 30 transitions, 68 flow [2024-11-22 13:37:17,917 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2024-11-22 13:37:17,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:37:17,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 1/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-11-22 13:37:17,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 30 transitions, 68 flow [2024-11-22 13:37:17,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-11-22 13:37:17,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:37:17,941 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;@432bbb4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:37:17,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:37:17,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:37:17,951 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2024-11-22 13:37:17,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:37:17,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:17,952 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:17,953 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:37:17,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash -151938984, now seen corresponding path program 1 times [2024-11-22 13:37:17,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:17,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753360434] [2024-11-22 13:37:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:37:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:18,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:18,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753360434] [2024-11-22 13:37:18,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753360434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:18,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:18,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:37:18,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569400837] [2024-11-22 13:37:18,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:18,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:37:18,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:37:18,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:37:18,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 30 [2024-11-22 13:37:18,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-22 13:37:18,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:18,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 30 [2024-11-22 13:37:18,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:18,677 INFO L124 PetriNetUnfolderBase]: 54/153 cut-off events. [2024-11-22 13:37:18,678 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:37:18,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 153 events. 54/153 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 618 event pairs, 6 based on Foata normal form. 9/156 useless extension candidates. Maximal degree in co-relation 267. Up to 55 conditions per place. [2024-11-22 13:37:18,682 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 17 selfloop transitions, 4 changer transitions 1/35 dead transitions. [2024-11-22 13:37:18,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 123 flow [2024-11-22 13:37:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:37:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:37:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-22 13:37:18,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-22 13:37:18,698 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 4 states and 88 transitions. [2024-11-22 13:37:18,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 123 flow [2024-11-22 13:37:18,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:37:18,705 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 80 flow [2024-11-22 13:37:18,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-11-22 13:37:18,712 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2024-11-22 13:37:18,713 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 80 flow [2024-11-22 13:37:18,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-22 13:37:18,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:18,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:18,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:37:18,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:37:18,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 528319049, now seen corresponding path program 1 times [2024-11-22 13:37:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:18,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506099456] [2024-11-22 13:37:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:37:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506099456] [2024-11-22 13:37:18,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506099456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:18,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:18,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:37:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482921292] [2024-11-22 13:37:18,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:18,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:37:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:37:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:37:18,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 30 [2024-11-22 13:37:18,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-22 13:37:18,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:18,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 30 [2024-11-22 13:37:18,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:19,031 INFO L124 PetriNetUnfolderBase]: 38/108 cut-off events. [2024-11-22 13:37:19,032 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-22 13:37:19,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 108 events. 38/108 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 291 event pairs, 2 based on Foata normal form. 8/112 useless extension candidates. Maximal degree in co-relation 241. Up to 28 conditions per place. [2024-11-22 13:37:19,034 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 16 selfloop transitions, 6 changer transitions 1/36 dead transitions. [2024-11-22 13:37:19,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 149 flow [2024-11-22 13:37:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:37:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:37:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-11-22 13:37:19,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-22 13:37:19,038 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 80 flow. Second operand 5 states and 105 transitions. [2024-11-22 13:37:19,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 149 flow [2024-11-22 13:37:19,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 140 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-22 13:37:19,041 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 96 flow [2024-11-22 13:37:19,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2024-11-22 13:37:19,042 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-11-22 13:37:19,042 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 96 flow [2024-11-22 13:37:19,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-22 13:37:19,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:19,045 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:19,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:37:19,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:37:19,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2134081524, now seen corresponding path program 1 times [2024-11-22 13:37:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:19,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238399941] [2024-11-22 13:37:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:37:19,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:19,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:19,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238399941] [2024-11-22 13:37:19,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238399941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:19,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:19,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:37:19,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279983045] [2024-11-22 13:37:19,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:19,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:37:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:37:19,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:37:19,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 30 [2024-11-22 13:37:19,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-22 13:37:19,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:19,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 30 [2024-11-22 13:37:19,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:19,449 INFO L124 PetriNetUnfolderBase]: 72/199 cut-off events. [2024-11-22 13:37:19,449 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-11-22 13:37:19,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 199 events. 72/199 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 787 event pairs, 29 based on Foata normal form. 4/191 useless extension candidates. Maximal degree in co-relation 435. Up to 85 conditions per place. [2024-11-22 13:37:19,457 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 16 selfloop transitions, 4 changer transitions 8/41 dead transitions. [2024-11-22 13:37:19,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 188 flow [2024-11-22 13:37:19,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:37:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:37:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-11-22 13:37:19,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-11-22 13:37:19,460 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 96 flow. Second operand 5 states and 99 transitions. [2024-11-22 13:37:19,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 188 flow [2024-11-22 13:37:19,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 154 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-22 13:37:19,465 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 98 flow [2024-11-22 13:37:19,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2024-11-22 13:37:19,469 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-11-22 13:37:19,469 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 98 flow [2024-11-22 13:37:19,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-22 13:37:19,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:19,470 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:19,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:37:19,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:37:19,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2066708164, now seen corresponding path program 2 times [2024-11-22 13:37:19,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:19,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212107235] [2024-11-22 13:37:19,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:37:19,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:19,491 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:37:19,491 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:19,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:19,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212107235] [2024-11-22 13:37:19,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212107235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:19,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:19,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:37:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436655788] [2024-11-22 13:37:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:19,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:37:19,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:19,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:37:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:37:19,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-11-22 13:37:19,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:19,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:19,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-11-22 13:37:19,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:19,846 INFO L124 PetriNetUnfolderBase]: 75/204 cut-off events. [2024-11-22 13:37:19,847 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-22 13:37:19,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 204 events. 75/204 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 821 event pairs, 10 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 457. Up to 83 conditions per place. [2024-11-22 13:37:19,848 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-11-22 13:37:19,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 200 flow [2024-11-22 13:37:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:37:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:37:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-11-22 13:37:19,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-22 13:37:19,850 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 98 flow. Second operand 7 states and 123 transitions. [2024-11-22 13:37:19,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 200 flow [2024-11-22 13:37:19,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 186 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-22 13:37:19,853 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2024-11-22 13:37:19,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2024-11-22 13:37:19,854 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-11-22 13:37:19,854 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2024-11-22 13:37:19,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:19,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-22 13:37:19,859 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-22 13:37:19,859 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-22 13:37:19,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:37:19,860 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-11-22 13:37:19,865 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 13:37:19,865 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 13:37:19,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:37:19 BasicIcfg [2024-11-22 13:37:19,872 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 13:37:19,873 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 13:37:19,873 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 13:37:19,873 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 13:37:19,873 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:17" (3/4) ... [2024-11-22 13:37:19,879 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 13:37:19,882 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-22 13:37:19,883 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-22 13:37:19,887 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-11-22 13:37:19,888 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-22 13:37:19,888 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 13:37:19,889 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 13:37:19,978 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 13:37:19,979 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 13:37:19,979 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 13:37:19,980 INFO L158 Benchmark]: Toolchain (without parser) took 3307.64ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 115.7MB in the beginning and 184.6MB in the end (delta: -68.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 13:37:19,980 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 174.1MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 13:37:19,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.61ms. Allocated memory is still 174.1MB. Free memory was 115.7MB in the beginning and 92.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-22 13:37:19,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.73ms. Allocated memory is still 174.1MB. Free memory was 92.6MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:37:19,981 INFO L158 Benchmark]: Boogie Preprocessor took 37.49ms. Allocated memory is still 174.1MB. Free memory was 90.5MB in the beginning and 88.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:37:19,981 INFO L158 Benchmark]: RCFGBuilder took 470.68ms. Allocated memory is still 174.1MB. Free memory was 88.4MB in the beginning and 70.9MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-22 13:37:19,982 INFO L158 Benchmark]: TraceAbstraction took 2101.41ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 70.3MB in the beginning and 188.8MB in the end (delta: -118.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 13:37:19,983 INFO L158 Benchmark]: Witness Printer took 106.55ms. Allocated memory is still 237.0MB. Free memory was 188.8MB in the beginning and 184.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 13:37:19,985 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 174.1MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.61ms. Allocated memory is still 174.1MB. Free memory was 115.7MB in the beginning and 92.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.73ms. Allocated memory is still 174.1MB. Free memory was 92.6MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.49ms. Allocated memory is still 174.1MB. Free memory was 90.5MB in the beginning and 88.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 470.68ms. Allocated memory is still 174.1MB. Free memory was 88.4MB in the beginning and 70.9MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2101.41ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 70.3MB in the beginning and 188.8MB in the end (delta: -118.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 106.55ms. Allocated memory is still 237.0MB. Free memory was 188.8MB in the beginning and 184.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 3 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: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 93 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211 IncrementalHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 12 mSDtfsCounter, 211 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=3, InterpolantAutomatonStates: 21, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 13:37:20,007 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 Result: TRUE