./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/safe003_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 cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:10:19,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:10:19,833 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:10:19,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:10:19,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:10:19,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:10:19,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:10:19,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:10:19,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:10:19,865 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:10:19,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:10:19,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:10:19,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:10:19,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:10:19,868 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:10:19,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:10:19,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:10:19,869 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:10:19,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:10:19,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:10:19,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:10:19,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:10:19,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:10:19,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:10:19,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:10:19,874 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:10:19,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:10:19,874 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:10:19,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:10:19,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:10:19,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:10:19,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:10:19,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:10:19,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:10:19,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:10:19,876 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:10:19,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:10:19,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:10:19,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:10:19,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:10:19,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:10:19,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:10:19,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 [2024-11-12 08:10:20,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:10:20,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:10:20,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:10:20,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:10:20,112 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:10:20,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe003_tso.i [2024-11-12 08:10:21,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:10:21,694 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:10:21,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe003_tso.i [2024-11-12 08:10:21,715 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5bbc3427/36eade27ee294a0c9b966be0dcec674a/FLAG810e8b0cf [2024-11-12 08:10:22,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5bbc3427/36eade27ee294a0c9b966be0dcec674a [2024-11-12 08:10:22,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:10:22,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:10:22,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:10:22,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:10:22,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:10:22,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcdb431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22, skipping insertion in model container [2024-11-12 08:10:22,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,058 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:10:22,212 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/safe003_tso.i[945,958] [2024-11-12 08:10:22,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:10:22,315 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:10:22,326 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/safe003_tso.i[945,958] [2024-11-12 08:10:22,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:10:22,474 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:10:22,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22 WrapperNode [2024-11-12 08:10:22,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:10:22,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:10:22,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:10:22,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:10:22,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,518 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-11-12 08:10:22,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:10:22,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:10:22,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:10:22,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:10:22,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,561 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]. [2024-11-12 08:10:22,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,574 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:10:22,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:10:22,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:10:22,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:10:22,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (1/1) ... [2024-11-12 08:10:22,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:10:22,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:10:22,627 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) [2024-11-12 08:10:22,632 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 [2024-11-12 08:10:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:10:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:10:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-12 08:10:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-12 08:10:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-12 08:10:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-12 08:10:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-12 08:10:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-12 08:10:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:10:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:10:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:10:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:10:22,687 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:10:22,826 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:10:22,828 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:10:22,981 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:10:22,981 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:10:23,133 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:10:23,139 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-12 08:10:23,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:10:23 BoogieIcfgContainer [2024-11-12 08:10:23,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:10:23,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:10:23,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:10:23,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:10:23,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:10:22" (1/3) ... [2024-11-12 08:10:23,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a81567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:10:23, skipping insertion in model container [2024-11-12 08:10:23,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:10:22" (2/3) ... [2024-11-12 08:10:23,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a81567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:10:23, skipping insertion in model container [2024-11-12 08:10:23,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:10:23" (3/3) ... [2024-11-12 08:10:23,161 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2024-11-12 08:10:23,193 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:10:23,193 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:10:23,193 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:10:23,274 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 08:10:23,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-11-12 08:10:23,351 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-11-12 08:10:23,353 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:10:23,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-12 08:10:23,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-11-12 08:10:23,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-11-12 08:10:23,395 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:10:23,415 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;@6356bfef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:10:23,415 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 08:10:23,432 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:10:23,433 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-11-12 08:10:23,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:10:23,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:10:23,437 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:10:23,437 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:10:23,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:10:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash 958553775, now seen corresponding path program 1 times [2024-11-12 08:10:23,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:10:23,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593886017] [2024-11-12 08:10:23,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:10:23,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:10:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:10:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:10:24,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:10:24,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593886017] [2024-11-12 08:10:24,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593886017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:10:24,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:10:24,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:10:24,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814501046] [2024-11-12 08:10:24,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:10:24,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:10:24,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:10:24,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:10:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:10:24,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-12 08:10:24,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:10:24,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:10:24,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-12 08:10:24,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:10:24,784 INFO L124 PetriNetUnfolderBase]: 1188/2237 cut-off events. [2024-11-12 08:10:24,788 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-12 08:10:24,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 2237 events. 1188/2237 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 15773 event pairs, 328 based on Foata normal form. 79/2269 useless extension candidates. Maximal degree in co-relation 4118. Up to 765 conditions per place. [2024-11-12 08:10:24,826 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 29 selfloop transitions, 6 changer transitions 35/83 dead transitions. [2024-11-12 08:10:24,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 321 flow [2024-11-12 08:10:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:10:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:10:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-11-12 08:10:24,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6917293233082706 [2024-11-12 08:10:24,841 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 184 transitions. [2024-11-12 08:10:24,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 321 flow [2024-11-12 08:10:24,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 08:10:24,856 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 144 flow [2024-11-12 08:10:24,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-11-12 08:10:24,867 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-11-12 08:10:24,867 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 144 flow [2024-11-12 08:10:24,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:10:24,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:10:24,868 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:10:24,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:10:24,868 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:10:24,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:10:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1253896208, now seen corresponding path program 1 times [2024-11-12 08:10:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:10:24,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840584885] [2024-11-12 08:10:24,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:10:24,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:10:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:10:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:10:25,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:10:25,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840584885] [2024-11-12 08:10:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840584885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:10:25,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:10:25,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:10:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416491223] [2024-11-12 08:10:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:10:25,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:10:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:10:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:10:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:10:25,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-12 08:10:25,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:10:25,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:10:25,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-12 08:10:25,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:10:25,733 INFO L124 PetriNetUnfolderBase]: 846/1746 cut-off events. [2024-11-12 08:10:25,733 INFO L125 PetriNetUnfolderBase]: For 1798/1803 co-relation queries the response was YES. [2024-11-12 08:10:25,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 1746 events. 846/1746 cut-off events. For 1798/1803 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12460 event pairs, 209 based on Foata normal form. 69/1779 useless extension candidates. Maximal degree in co-relation 4650. Up to 358 conditions per place. [2024-11-12 08:10:25,753 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 33 selfloop transitions, 6 changer transitions 50/102 dead transitions. [2024-11-12 08:10:25,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 102 transitions, 640 flow [2024-11-12 08:10:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:10:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:10:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-11-12 08:10:25,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6236842105263158 [2024-11-12 08:10:25,759 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 144 flow. Second operand 10 states and 237 transitions. [2024-11-12 08:10:25,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 102 transitions, 640 flow [2024-11-12 08:10:25,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 102 transitions, 584 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-12 08:10:25,782 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 198 flow [2024-11-12 08:10:25,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=198, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2024-11-12 08:10:25,783 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-11-12 08:10:25,783 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 198 flow [2024-11-12 08:10:25,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:10:25,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:10:25,783 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:10:25,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:10:25,784 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:10:25,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:10:25,784 INFO L85 PathProgramCache]: Analyzing trace with hash -114621907, now seen corresponding path program 1 times [2024-11-12 08:10:25,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:10:25,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839563731] [2024-11-12 08:10:25,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:10:25,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:10:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:10:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:10:26,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:10:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839563731] [2024-11-12 08:10:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839563731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:10:26,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:10:26,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:10:26,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720860484] [2024-11-12 08:10:26,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:10:26,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:10:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:10:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:10:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:10:26,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-12 08:10:26,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-11-12 08:10:26,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:10:26,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-12 08:10:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:10:26,451 INFO L124 PetriNetUnfolderBase]: 744/1625 cut-off events. [2024-11-12 08:10:26,452 INFO L125 PetriNetUnfolderBase]: For 2943/2943 co-relation queries the response was YES. [2024-11-12 08:10:26,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 1625 events. 744/1625 cut-off events. For 2943/2943 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11876 event pairs, 116 based on Foata normal form. 30/1608 useless extension candidates. Maximal degree in co-relation 4470. Up to 556 conditions per place. [2024-11-12 08:10:26,458 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 35 selfloop transitions, 9 changer transitions 38/95 dead transitions. [2024-11-12 08:10:26,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 672 flow [2024-11-12 08:10:26,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:10:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:10:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-11-12 08:10:26,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6286549707602339 [2024-11-12 08:10:26,460 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 198 flow. Second operand 9 states and 215 transitions. [2024-11-12 08:10:26,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 672 flow [2024-11-12 08:10:26,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 95 transitions, 603 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-11-12 08:10:26,469 INFO L231 Difference]: Finished difference. Result has 68 places, 38 transitions, 200 flow [2024-11-12 08:10:26,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=68, PETRI_TRANSITIONS=38} [2024-11-12 08:10:26,469 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-11-12 08:10:26,470 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 38 transitions, 200 flow [2024-11-12 08:10:26,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-11-12 08:10:26,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:10:26,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:10:26,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:10:26,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:10:26,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:10:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1803196892, now seen corresponding path program 1 times [2024-11-12 08:10:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:10:26,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071440449] [2024-11-12 08:10:26,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:10:26,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:10:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:10:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:10:26,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:10:26,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071440449] [2024-11-12 08:10:26,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071440449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:10:26,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:10:26,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:10:26,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024260693] [2024-11-12 08:10:26,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:10:26,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:10:26,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:10:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:10:26,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:10:26,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-12 08:10:26,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 38 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 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) [2024-11-12 08:10:26,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:10:26,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-12 08:10:26,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:10:26,875 INFO L124 PetriNetUnfolderBase]: 494/1155 cut-off events. [2024-11-12 08:10:26,875 INFO L125 PetriNetUnfolderBase]: For 1744/1744 co-relation queries the response was YES. [2024-11-12 08:10:26,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3142 conditions, 1155 events. 494/1155 cut-off events. For 1744/1744 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8326 event pairs, 124 based on Foata normal form. 20/1149 useless extension candidates. Maximal degree in co-relation 3112. Up to 315 conditions per place. [2024-11-12 08:10:26,882 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 32 selfloop transitions, 8 changer transitions 21/74 dead transitions. [2024-11-12 08:10:26,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 496 flow [2024-11-12 08:10:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:10:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:10:26,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-11-12 08:10:26,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6353383458646616 [2024-11-12 08:10:26,884 INFO L175 Difference]: Start difference. First operand has 68 places, 38 transitions, 200 flow. Second operand 7 states and 169 transitions. [2024-11-12 08:10:26,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 496 flow [2024-11-12 08:10:26,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 387 flow, removed 34 selfloop flow, removed 17 redundant places. [2024-11-12 08:10:26,891 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 159 flow [2024-11-12 08:10:26,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2024-11-12 08:10:26,891 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-11-12 08:10:26,892 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 159 flow [2024-11-12 08:10:26,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 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) [2024-11-12 08:10:26,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:10:26,892 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:10:26,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:10:26,892 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:10:26,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:10:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash 625082506, now seen corresponding path program 2 times [2024-11-12 08:10:26,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:10:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623545824] [2024-11-12 08:10:26,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:10:26,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:10:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:10:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:10:27,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:10:27,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623545824] [2024-11-12 08:10:27,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623545824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:10:27,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:10:27,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:10:27,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699332517] [2024-11-12 08:10:27,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:10:27,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:10:27,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:10:27,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:10:27,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:10:27,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-12 08:10:27,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 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) [2024-11-12 08:10:27,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:10:27,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-12 08:10:27,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:10:27,273 INFO L124 PetriNetUnfolderBase]: 234/553 cut-off events. [2024-11-12 08:10:27,273 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-11-12 08:10:27,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 553 events. 234/553 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3296 event pairs, 47 based on Foata normal form. 12/550 useless extension candidates. Maximal degree in co-relation 1356. Up to 150 conditions per place. [2024-11-12 08:10:27,276 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 23 selfloop transitions, 4 changer transitions 33/73 dead transitions. [2024-11-12 08:10:27,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 391 flow [2024-11-12 08:10:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:10:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:10:27,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-11-12 08:10:27,278 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5815789473684211 [2024-11-12 08:10:27,278 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 159 flow. Second operand 10 states and 221 transitions. [2024-11-12 08:10:27,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 391 flow [2024-11-12 08:10:27,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 351 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-12 08:10:27,281 INFO L231 Difference]: Finished difference. Result has 62 places, 32 transitions, 120 flow [2024-11-12 08:10:27,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=120, PETRI_PLACES=62, PETRI_TRANSITIONS=32} [2024-11-12 08:10:27,282 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-11-12 08:10:27,282 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 32 transitions, 120 flow [2024-11-12 08:10:27,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 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) [2024-11-12 08:10:27,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:10:27,283 INFO L206 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] [2024-11-12 08:10:27,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:10:27,283 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:10:27,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:10:27,284 INFO L85 PathProgramCache]: Analyzing trace with hash 522342750, now seen corresponding path program 1 times [2024-11-12 08:10:27,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:10:27,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017852283] [2024-11-12 08:10:27,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:10:27,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:10:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:10:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:10:27,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:10:27,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017852283] [2024-11-12 08:10:27,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017852283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:10:27,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:10:27,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:10:27,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541923947] [2024-11-12 08:10:27,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:10:27,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:10:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:10:27,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:10:27,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:10:27,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-12 08:10:27,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 32 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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) [2024-11-12 08:10:27,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:10:27,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-12 08:10:27,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:10:27,541 INFO L124 PetriNetUnfolderBase]: 133/288 cut-off events. [2024-11-12 08:10:27,541 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-11-12 08:10:27,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 288 events. 133/288 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1289 event pairs, 53 based on Foata normal form. 12/289 useless extension candidates. Maximal degree in co-relation 710. Up to 106 conditions per place. [2024-11-12 08:10:27,543 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2024-11-12 08:10:27,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 232 flow [2024-11-12 08:10:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:10:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:10:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-11-12 08:10:27,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2024-11-12 08:10:27,544 INFO L175 Difference]: Start difference. First operand has 62 places, 32 transitions, 120 flow. Second operand 8 states and 159 transitions. [2024-11-12 08:10:27,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 232 flow [2024-11-12 08:10:27,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 195 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-11-12 08:10:27,545 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-11-12 08:10:27,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-11-12 08:10:27,546 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-11-12 08:10:27,546 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-11-12 08:10:27,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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) [2024-11-12 08:10:27,549 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-12 08:10:27,549 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-12 08:10:27,550 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-12 08:10:27,550 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-12 08:10:27,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:10:27,550 INFO L421 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-12 08:10:27,553 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 08:10:27,553 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 08:10:27,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:10:27 BasicIcfg [2024-11-12 08:10:27,558 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 08:10:27,558 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 08:10:27,559 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 08:10:27,559 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 08:10:27,559 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:10:23" (3/4) ... [2024-11-12 08:10:27,561 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 08:10:27,564 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-12 08:10:27,564 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-12 08:10:27,564 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-12 08:10:27,567 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-12 08:10:27,567 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-12 08:10:27,568 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-12 08:10:27,568 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-12 08:10:27,630 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 08:10:27,631 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 08:10:27,631 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 08:10:27,631 INFO L158 Benchmark]: Toolchain (without parser) took 5618.07ms. Allocated memory was 151.0MB in the beginning and 329.3MB in the end (delta: 178.3MB). Free memory was 79.0MB in the beginning and 203.2MB in the end (delta: -124.1MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2024-11-12 08:10:27,632 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory was 101.4MB in the beginning and 101.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:10:27,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.10ms. Allocated memory was 151.0MB in the beginning and 245.4MB in the end (delta: 94.4MB). Free memory was 78.9MB in the beginning and 211.5MB in the end (delta: -132.6MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2024-11-12 08:10:27,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.63ms. Allocated memory is still 245.4MB. Free memory was 211.5MB in the beginning and 209.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:10:27,632 INFO L158 Benchmark]: Boogie Preprocessor took 65.19ms. Allocated memory is still 245.4MB. Free memory was 209.4MB in the beginning and 207.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:10:27,633 INFO L158 Benchmark]: RCFGBuilder took 557.59ms. Allocated memory is still 245.4MB. Free memory was 207.3MB in the beginning and 187.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-12 08:10:27,633 INFO L158 Benchmark]: TraceAbstraction took 4410.44ms. Allocated memory was 245.4MB in the beginning and 329.3MB in the end (delta: 83.9MB). Free memory was 186.3MB in the beginning and 207.3MB in the end (delta: -21.0MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2024-11-12 08:10:27,633 INFO L158 Benchmark]: Witness Printer took 72.61ms. Allocated memory is still 329.3MB. Free memory was 207.3MB in the beginning and 203.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 08:10:27,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory was 101.4MB in the beginning and 101.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.10ms. Allocated memory was 151.0MB in the beginning and 245.4MB in the end (delta: 94.4MB). Free memory was 78.9MB in the beginning and 211.5MB in the end (delta: -132.6MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.63ms. Allocated memory is still 245.4MB. Free memory was 211.5MB in the beginning and 209.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.19ms. Allocated memory is still 245.4MB. Free memory was 209.4MB in the beginning and 207.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 557.59ms. Allocated memory is still 245.4MB. Free memory was 207.3MB in the beginning and 187.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4410.44ms. Allocated memory was 245.4MB in the beginning and 329.3MB in the end (delta: 83.9MB). Free memory was 186.3MB in the beginning and 207.3MB in the end (delta: -21.0MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. * Witness Printer took 72.61ms. Allocated memory is still 329.3MB. Free memory was 207.3MB in the beginning and 203.2MB 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 7 procedures, 62 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 367 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 336 mSDsluCounter, 241 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 169 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 641 IncrementalHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 72 mSDtfsCounter, 641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=3, InterpolantAutomatonStates: 51, 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, 1.3s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 571 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 08:10:27,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE