./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/weaver/parallel-misc-3-extended.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:30:15,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:30:15,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:30:15,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:30:15,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:30:15,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:30:15,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:30:15,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:30:15,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:30:15,913 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:30:15,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:30:15,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:30:15,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:30:15,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:30:15,916 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:30:15,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:30:15,917 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:30:15,917 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:30:15,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:30:15,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:30:15,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:30:15,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:30:15,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:30:15,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:30:15,920 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:30:15,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:30:15,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:30:15,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:30:15,921 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:30:15,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:30:15,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:30:15,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:30:15,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:30:15,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:30:15,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:30:15,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:30:15,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:30:15,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:30:15,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:30:15,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:30:15,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:30:15,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:30:15,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f [2024-11-10 10:30:16,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:30:16,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:30:16,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:30:16,195 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:30:16,195 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:30:16,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-10 10:30:17,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:30:17,884 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:30:17,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-10 10:30:17,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d744f1a/c917c8c3411143a4bb2c27cfef4c60dc/FLAGdc3cb8bf2 [2024-11-10 10:30:17,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d744f1a/c917c8c3411143a4bb2c27cfef4c60dc [2024-11-10 10:30:17,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:30:17,921 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:30:17,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:30:17,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:30:17,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:30:17,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:30:17" (1/1) ... [2024-11-10 10:30:17,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1355f323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:17, skipping insertion in model container [2024-11-10 10:30:17,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:30:17" (1/1) ... [2024-11-10 10:30:17,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:30:18,115 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/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2024-11-10 10:30:18,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:30:18,133 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:30:18,154 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/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2024-11-10 10:30:18,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:30:18,171 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:30:18,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18 WrapperNode [2024-11-10 10:30:18,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:30:18,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:30:18,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:30:18,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:30:18,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,201 INFO L138 Inliner]: procedures = 19, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2024-11-10 10:30:18,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:30:18,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:30:18,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:30:18,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:30:18,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,218 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,235 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]. [2024-11-10 10:30:18,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,240 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:30:18,251 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:30:18,251 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:30:18,251 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:30:18,252 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (1/1) ... [2024-11-10 10:30:18,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:30:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:18,291 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) [2024-11-10 10:30:18,304 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 [2024-11-10 10:30:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:30:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:30:18,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:30:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:30:18,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:30:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:30:18,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:30:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:30:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:30:18,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:30:18,349 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:30:18,446 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:30:18,448 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:30:18,663 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:30:18,663 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:30:18,791 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:30:18,791 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:30:18,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:30:18 BoogieIcfgContainer [2024-11-10 10:30:18,792 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:30:18,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:30:18,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:30:18,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:30:18,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:30:17" (1/3) ... [2024-11-10 10:30:18,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe773af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:30:18, skipping insertion in model container [2024-11-10 10:30:18,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:18" (2/3) ... [2024-11-10 10:30:18,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe773af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:30:18, skipping insertion in model container [2024-11-10 10:30:18,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:30:18" (3/3) ... [2024-11-10 10:30:18,800 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-11-10 10:30:18,816 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:30:18,816 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:30:18,817 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:30:18,885 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:30:18,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 51 transitions, 123 flow [2024-11-10 10:30:18,951 INFO L124 PetriNetUnfolderBase]: 9/48 cut-off events. [2024-11-10 10:30:18,951 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:30:18,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 9/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-11-10 10:30:18,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 51 transitions, 123 flow [2024-11-10 10:30:18,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 47 transitions, 112 flow [2024-11-10 10:30:18,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:30:18,973 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;@4f2c7f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:30:18,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:30:18,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:30:18,990 INFO L124 PetriNetUnfolderBase]: 9/46 cut-off events. [2024-11-10 10:30:18,990 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:30:18,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:18,991 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:18,991 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)] === [2024-11-10 10:30:19,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash 923065274, now seen corresponding path program 1 times [2024-11-10 10:30:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:19,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207659261] [2024-11-10 10:30:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:19,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:19,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:19,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207659261] [2024-11-10 10:30:19,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207659261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:19,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:19,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:30:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707280384] [2024-11-10 10:30:19,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:19,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:30:19,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:19,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:30:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:30:19,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2024-11-10 10:30:19,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 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) [2024-11-10 10:30:19,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:19,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2024-11-10 10:30:19,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:19,560 INFO L124 PetriNetUnfolderBase]: 826/1611 cut-off events. [2024-11-10 10:30:19,561 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-10 10:30:19,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 1611 events. 826/1611 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10280 event pairs, 341 based on Foata normal form. 253/1409 useless extension candidates. Maximal degree in co-relation 2507. Up to 1042 conditions per place. [2024-11-10 10:30:19,579 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 23 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-11-10 10:30:19,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 152 flow [2024-11-10 10:30:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:30:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:30:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2024-11-10 10:30:19,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-11-10 10:30:19,592 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 112 flow. Second operand 2 states and 74 transitions. [2024-11-10 10:30:19,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 152 flow [2024-11-10 10:30:19,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 140 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:30:19,597 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 94 flow [2024-11-10 10:30:19,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2024-11-10 10:30:19,603 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2024-11-10 10:30:19,603 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 94 flow [2024-11-10 10:30:19,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 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) [2024-11-10 10:30:19,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:19,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:19,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:30:19,606 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)] === [2024-11-10 10:30:19,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -772009928, now seen corresponding path program 1 times [2024-11-10 10:30:19,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:19,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760461793] [2024-11-10 10:30:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:19,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:19,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:19,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760461793] [2024-11-10 10:30:19,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760461793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:19,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:19,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:30:19,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889930012] [2024-11-10 10:30:19,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:19,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:30:19,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:19,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:30:19,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:30:19,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2024-11-10 10:30:19,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-10 10:30:19,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:19,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2024-11-10 10:30:19,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:19,869 INFO L124 PetriNetUnfolderBase]: 996/1845 cut-off events. [2024-11-10 10:30:19,869 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-10 10:30:19,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3122 conditions, 1845 events. 996/1845 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11206 event pairs, 94 based on Foata normal form. 1/1527 useless extension candidates. Maximal degree in co-relation 3119. Up to 1177 conditions per place. [2024-11-10 10:30:19,880 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 32 selfloop transitions, 7 changer transitions 1/61 dead transitions. [2024-11-10 10:30:19,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 61 transitions, 213 flow [2024-11-10 10:30:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:30:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:30:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-10 10:30:19,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.738562091503268 [2024-11-10 10:30:19,882 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 94 flow. Second operand 3 states and 113 transitions. [2024-11-10 10:30:19,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 61 transitions, 213 flow [2024-11-10 10:30:19,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 213 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:30:19,886 INFO L231 Difference]: Finished difference. Result has 46 places, 50 transitions, 141 flow [2024-11-10 10:30:19,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2024-11-10 10:30:19,887 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-11-10 10:30:19,887 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 141 flow [2024-11-10 10:30:19,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-10 10:30:19,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:19,888 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:19,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:30:19,888 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)] === [2024-11-10 10:30:19,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 944152409, now seen corresponding path program 1 times [2024-11-10 10:30:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445905440] [2024-11-10 10:30:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:30:20,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:20,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445905440] [2024-11-10 10:30:20,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445905440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:20,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:20,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:30:20,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773636180] [2024-11-10 10:30:20,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:20,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:30:20,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:20,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:30:20,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:30:20,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-10 10:30:20,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-10 10:30:20,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:20,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-10 10:30:20,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:20,238 INFO L124 PetriNetUnfolderBase]: 1294/2176 cut-off events. [2024-11-10 10:30:20,239 INFO L125 PetriNetUnfolderBase]: For 615/615 co-relation queries the response was YES. [2024-11-10 10:30:20,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 2176 events. 1294/2176 cut-off events. For 615/615 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12638 event pairs, 183 based on Foata normal form. 48/1929 useless extension candidates. Maximal degree in co-relation 4669. Up to 1094 conditions per place. [2024-11-10 10:30:20,250 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-10 10:30:20,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 279 flow [2024-11-10 10:30:20,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:30:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:30:20,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-10 10:30:20,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7189542483660131 [2024-11-10 10:30:20,252 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 141 flow. Second operand 3 states and 110 transitions. [2024-11-10 10:30:20,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 279 flow [2024-11-10 10:30:20,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 270 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 10:30:20,254 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 144 flow [2024-11-10 10:30:20,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2024-11-10 10:30:20,254 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-11-10 10:30:20,255 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 144 flow [2024-11-10 10:30:20,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-10 10:30:20,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:20,255 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:20,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:30:20,255 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)] === [2024-11-10 10:30:20,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash 562667383, now seen corresponding path program 1 times [2024-11-10 10:30:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983611792] [2024-11-10 10:30:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:20,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:20,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:20,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983611792] [2024-11-10 10:30:20,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983611792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:20,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:20,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:30:20,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020687469] [2024-11-10 10:30:20,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:20,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:30:20,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:20,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:30:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:30:20,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-10 10:30:20,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-10 10:30:20,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:20,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-10 10:30:20,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:20,515 INFO L124 PetriNetUnfolderBase]: 1435/2504 cut-off events. [2024-11-10 10:30:20,516 INFO L125 PetriNetUnfolderBase]: For 902/902 co-relation queries the response was YES. [2024-11-10 10:30:20,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 2504 events. 1435/2504 cut-off events. For 902/902 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15730 event pairs, 204 based on Foata normal form. 56/2154 useless extension candidates. Maximal degree in co-relation 5496. Up to 1335 conditions per place. [2024-11-10 10:30:20,527 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 45 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-11-10 10:30:20,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 289 flow [2024-11-10 10:30:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:30:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:30:20,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-10 10:30:20,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7124183006535948 [2024-11-10 10:30:20,531 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 144 flow. Second operand 3 states and 109 transitions. [2024-11-10 10:30:20,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 67 transitions, 289 flow [2024-11-10 10:30:20,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:30:20,533 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 154 flow [2024-11-10 10:30:20,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-11-10 10:30:20,534 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2024-11-10 10:30:20,534 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 154 flow [2024-11-10 10:30:20,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-10 10:30:20,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:20,538 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:20,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:30:20,539 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)] === [2024-11-10 10:30:20,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:20,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1040723400, now seen corresponding path program 1 times [2024-11-10 10:30:20,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:20,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720146004] [2024-11-10 10:30:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:20,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:30:20,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:20,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720146004] [2024-11-10 10:30:20,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720146004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:20,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:20,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:30:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114586783] [2024-11-10 10:30:20,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:20,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:30:20,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:30:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:30:20,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-10 10:30:20,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-10 10:30:20,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:20,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-10 10:30:20,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:20,913 INFO L124 PetriNetUnfolderBase]: 1633/2808 cut-off events. [2024-11-10 10:30:20,913 INFO L125 PetriNetUnfolderBase]: For 1163/1163 co-relation queries the response was YES. [2024-11-10 10:30:20,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6542 conditions, 2808 events. 1633/2808 cut-off events. For 1163/1163 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17889 event pairs, 321 based on Foata normal form. 55/2578 useless extension candidates. Maximal degree in co-relation 6535. Up to 1323 conditions per place. [2024-11-10 10:30:20,952 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 46 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-10 10:30:20,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 305 flow [2024-11-10 10:30:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:30:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:30:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-10 10:30:20,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-11-10 10:30:20,954 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 154 flow. Second operand 3 states and 108 transitions. [2024-11-10 10:30:20,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 305 flow [2024-11-10 10:30:20,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:30:20,961 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 164 flow [2024-11-10 10:30:20,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-11-10 10:30:20,963 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2024-11-10 10:30:20,964 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 164 flow [2024-11-10 10:30:20,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-10 10:30:20,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:20,964 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:20,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:30:20,964 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)] === [2024-11-10 10:30:20,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1736096694, now seen corresponding path program 1 times [2024-11-10 10:30:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:20,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041273038] [2024-11-10 10:30:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:20,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:30:21,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:21,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041273038] [2024-11-10 10:30:21,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041273038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:21,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:21,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:30:21,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871865827] [2024-11-10 10:30:21,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:21,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:30:21,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:30:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:30:21,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-11-10 10:30:21,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-11-10 10:30:21,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:21,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-11-10 10:30:21,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:21,648 INFO L124 PetriNetUnfolderBase]: 3067/4743 cut-off events. [2024-11-10 10:30:21,648 INFO L125 PetriNetUnfolderBase]: For 1924/2052 co-relation queries the response was YES. [2024-11-10 10:30:21,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11696 conditions, 4743 events. 3067/4743 cut-off events. For 1924/2052 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27585 event pairs, 492 based on Foata normal form. 66/4518 useless extension candidates. Maximal degree in co-relation 11688. Up to 1943 conditions per place. [2024-11-10 10:30:21,680 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 66 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-11-10 10:30:21,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 422 flow [2024-11-10 10:30:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:30:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:30:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-10 10:30:21,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7107843137254902 [2024-11-10 10:30:21,688 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 164 flow. Second operand 4 states and 145 transitions. [2024-11-10 10:30:21,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 422 flow [2024-11-10 10:30:21,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 89 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:30:21,694 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 194 flow [2024-11-10 10:30:21,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-11-10 10:30:21,696 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2024-11-10 10:30:21,696 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 194 flow [2024-11-10 10:30:21,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-11-10 10:30:21,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:21,697 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:21,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:30:21,697 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:30:21,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash -958597794, now seen corresponding path program 1 times [2024-11-10 10:30:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:21,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615574828] [2024-11-10 10:30:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 10:30:21,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:21,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615574828] [2024-11-10 10:30:21,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615574828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:21,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:21,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:30:21,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829092141] [2024-11-10 10:30:21,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:21,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:30:21,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:21,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:30:21,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:30:21,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-11-10 10:30:21,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 10:30:21,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:21,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-11-10 10:30:21,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:22,479 INFO L124 PetriNetUnfolderBase]: 4416/6642 cut-off events. [2024-11-10 10:30:22,479 INFO L125 PetriNetUnfolderBase]: For 4989/5101 co-relation queries the response was YES. [2024-11-10 10:30:22,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17740 conditions, 6642 events. 4416/6642 cut-off events. For 4989/5101 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 41477 event pairs, 1048 based on Foata normal form. 96/6306 useless extension candidates. Maximal degree in co-relation 17730. Up to 2475 conditions per place. [2024-11-10 10:30:22,525 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 67 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2024-11-10 10:30:22,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 486 flow [2024-11-10 10:30:22,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:30:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:30:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-10 10:30:22,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6911764705882353 [2024-11-10 10:30:22,527 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 194 flow. Second operand 4 states and 141 transitions. [2024-11-10 10:30:22,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 486 flow [2024-11-10 10:30:22,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 91 transitions, 480 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-10 10:30:22,531 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 224 flow [2024-11-10 10:30:22,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-10 10:30:22,532 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2024-11-10 10:30:22,532 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 224 flow [2024-11-10 10:30:22,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 10:30:22,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:22,533 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:22,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:30:22,534 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:30:22,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 390497274, now seen corresponding path program 1 times [2024-11-10 10:30:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746311597] [2024-11-10 10:30:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 10:30:22,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746311597] [2024-11-10 10:30:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746311597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:22,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:22,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:30:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234281585] [2024-11-10 10:30:22,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:22,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:30:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:30:22,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:30:22,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-11-10 10:30:22,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 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) [2024-11-10 10:30:22,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:22,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-11-10 10:30:22,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:23,849 INFO L124 PetriNetUnfolderBase]: 6924/10740 cut-off events. [2024-11-10 10:30:23,849 INFO L125 PetriNetUnfolderBase]: For 11249/11469 co-relation queries the response was YES. [2024-11-10 10:30:23,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30515 conditions, 10740 events. 6924/10740 cut-off events. For 11249/11469 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 73603 event pairs, 1626 based on Foata normal form. 171/10417 useless extension candidates. Maximal degree in co-relation 30502. Up to 4189 conditions per place. [2024-11-10 10:30:23,904 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 74 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2024-11-10 10:30:23,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 572 flow [2024-11-10 10:30:23,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:30:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:30:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-10 10:30:23,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7009803921568627 [2024-11-10 10:30:23,905 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 224 flow. Second operand 4 states and 143 transitions. [2024-11-10 10:30:23,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 572 flow [2024-11-10 10:30:23,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 566 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-10 10:30:23,910 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 254 flow [2024-11-10 10:30:23,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-10 10:30:23,910 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2024-11-10 10:30:23,911 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 254 flow [2024-11-10 10:30:23,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 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) [2024-11-10 10:30:23,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:23,911 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:23,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:30:23,911 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:30:23,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1382466305, now seen corresponding path program 1 times [2024-11-10 10:30:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606964720] [2024-11-10 10:30:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 10:30:24,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:24,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606964720] [2024-11-10 10:30:24,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606964720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:24,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233071250] [2024-11-10 10:30:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:24,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:24,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:24,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:24,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:30:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:24,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:30:24,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 10:30:24,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 10:30:24,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233071250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:24,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:24,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-10 10:30:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396611196] [2024-11-10 10:30:24,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:24,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:30:24,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:30:24,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:30:24,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2024-11-10 10:30:24,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 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) [2024-11-10 10:30:24,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:24,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2024-11-10 10:30:24,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:26,978 INFO L124 PetriNetUnfolderBase]: 13709/24867 cut-off events. [2024-11-10 10:30:26,978 INFO L125 PetriNetUnfolderBase]: For 27751/27790 co-relation queries the response was YES. [2024-11-10 10:30:27,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70483 conditions, 24867 events. 13709/24867 cut-off events. For 27751/27790 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 204746 event pairs, 2553 based on Foata normal form. 1/24501 useless extension candidates. Maximal degree in co-relation 70467. Up to 8575 conditions per place. [2024-11-10 10:30:27,341 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 99 selfloop transitions, 22 changer transitions 1/146 dead transitions. [2024-11-10 10:30:27,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 146 transitions, 888 flow [2024-11-10 10:30:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:30:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:30:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2024-11-10 10:30:27,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.807843137254902 [2024-11-10 10:30:27,344 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 254 flow. Second operand 5 states and 206 transitions. [2024-11-10 10:30:27,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 146 transitions, 888 flow [2024-11-10 10:30:27,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 146 transitions, 880 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-10 10:30:27,361 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 395 flow [2024-11-10 10:30:27,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2024-11-10 10:30:27,362 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 23 predicate places. [2024-11-10 10:30:27,363 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 395 flow [2024-11-10 10:30:27,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 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) [2024-11-10 10:30:27,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:27,369 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:27,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:30:27,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:27,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:30:27,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:27,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2049931755, now seen corresponding path program 2 times [2024-11-10 10:30:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:27,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526877114] [2024-11-10 10:30:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:30:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526877114] [2024-11-10 10:30:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526877114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255519083] [2024-11-10 10:30:27,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:30:27,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:27,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:27,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:27,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:30:28,023 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:30:28,023 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:28,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:30:28,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:30:28,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:30:28,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255519083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:28,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:28,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-10 10:30:28,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194659233] [2024-11-10 10:30:28,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:28,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:30:28,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:28,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:30:28,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:30:28,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2024-11-10 10:30:28,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 395 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:30:28,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:28,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2024-11-10 10:30:28,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:33,189 INFO L124 PetriNetUnfolderBase]: 25721/46561 cut-off events. [2024-11-10 10:30:33,189 INFO L125 PetriNetUnfolderBase]: For 70940/71081 co-relation queries the response was YES. [2024-11-10 10:30:33,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146708 conditions, 46561 events. 25721/46561 cut-off events. For 70940/71081 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 425419 event pairs, 2979 based on Foata normal form. 23/45924 useless extension candidates. Maximal degree in co-relation 146690. Up to 14115 conditions per place. [2024-11-10 10:30:33,763 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 123 selfloop transitions, 46 changer transitions 1/194 dead transitions. [2024-11-10 10:30:33,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 194 transitions, 1307 flow [2024-11-10 10:30:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:30:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:30:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2024-11-10 10:30:33,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8202614379084967 [2024-11-10 10:30:33,766 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 395 flow. Second operand 6 states and 251 transitions. [2024-11-10 10:30:33,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 194 transitions, 1307 flow [2024-11-10 10:30:33,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 194 transitions, 1223 flow, removed 42 selfloop flow, removed 0 redundant places. [2024-11-10 10:30:33,799 INFO L231 Difference]: Finished difference. Result has 77 places, 101 transitions, 583 flow [2024-11-10 10:30:33,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=77, PETRI_TRANSITIONS=101} [2024-11-10 10:30:33,800 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 29 predicate places. [2024-11-10 10:30:33,800 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 101 transitions, 583 flow [2024-11-10 10:30:33,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:30:33,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:33,801 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:33,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:30:34,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 10:30:34,002 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:30:34,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:34,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1777577411, now seen corresponding path program 3 times [2024-11-10 10:30:34,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:34,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915713107] [2024-11-10 10:30:34,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:34,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:34,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:34,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915713107] [2024-11-10 10:30:34,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915713107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:34,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845179588] [2024-11-10 10:30:34,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:30:34,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:34,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:34,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:30:34,222 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 10:30:34,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:34,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:30:34,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:34,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845179588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:34,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:34,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-10 10:30:34,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985918112] [2024-11-10 10:30:34,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:34,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:30:34,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:34,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:30:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:30:34,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2024-11-10 10:30:34,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 101 transitions, 583 flow. Second operand has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 7 states have internal predecessors, (194), 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) [2024-11-10 10:30:34,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:34,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2024-11-10 10:30:34,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:42,460 INFO L124 PetriNetUnfolderBase]: 41806/75869 cut-off events. [2024-11-10 10:30:42,461 INFO L125 PetriNetUnfolderBase]: For 124068/124246 co-relation queries the response was YES. [2024-11-10 10:30:42,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242248 conditions, 75869 events. 41806/75869 cut-off events. For 124068/124246 co-relation queries the response was YES. Maximal size of possible extension queue 2664. Compared 746562 event pairs, 4319 based on Foata normal form. 45/74639 useless extension candidates. Maximal degree in co-relation 242228. Up to 20701 conditions per place. [2024-11-10 10:30:43,235 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 146 selfloop transitions, 76 changer transitions 1/247 dead transitions. [2024-11-10 10:30:43,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 247 transitions, 1749 flow [2024-11-10 10:30:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:30:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:30:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 296 transitions. [2024-11-10 10:30:43,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8291316526610645 [2024-11-10 10:30:43,240 INFO L175 Difference]: Start difference. First operand has 77 places, 101 transitions, 583 flow. Second operand 7 states and 296 transitions. [2024-11-10 10:30:43,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 247 transitions, 1749 flow [2024-11-10 10:30:43,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 247 transitions, 1642 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-11-10 10:30:43,322 INFO L231 Difference]: Finished difference. Result has 83 places, 131 transitions, 861 flow [2024-11-10 10:30:43,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=861, PETRI_PLACES=83, PETRI_TRANSITIONS=131} [2024-11-10 10:30:43,322 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 35 predicate places. [2024-11-10 10:30:43,322 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 131 transitions, 861 flow [2024-11-10 10:30:43,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 7 states have internal predecessors, (194), 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) [2024-11-10 10:30:43,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:43,323 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:43,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 10:30:43,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:43,524 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:30:43,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:43,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1521122059, now seen corresponding path program 4 times [2024-11-10 10:30:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:43,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761411596] [2024-11-10 10:30:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 10:30:43,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:43,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761411596] [2024-11-10 10:30:43,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761411596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:43,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344032505] [2024-11-10 10:30:43,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:30:43,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:43,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:43,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:43,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:30:43,785 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:30:43,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:43,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:30:43,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 10:30:43,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 10:30:43,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344032505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:43,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:43,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-10 10:30:43,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155971486] [2024-11-10 10:30:43,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:43,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:30:43,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:43,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:30:43,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:30:43,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2024-11-10 10:30:43,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 131 transitions, 861 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:30:43,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:43,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2024-11-10 10:30:43,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:54,887 INFO L124 PetriNetUnfolderBase]: 53498/97604 cut-off events. [2024-11-10 10:30:54,887 INFO L125 PetriNetUnfolderBase]: For 196722/196802 co-relation queries the response was YES. [2024-11-10 10:30:55,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325306 conditions, 97604 events. 53498/97604 cut-off events. For 196722/196802 co-relation queries the response was YES. Maximal size of possible extension queue 3464. Compared 1002940 event pairs, 11051 based on Foata normal form. 37/95448 useless extension candidates. Maximal degree in co-relation 325285. Up to 58696 conditions per place. [2024-11-10 10:30:56,125 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 185 selfloop transitions, 54 changer transitions 1/264 dead transitions. [2024-11-10 10:30:56,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 264 transitions, 2098 flow [2024-11-10 10:30:56,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:30:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:30:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2024-11-10 10:30:56,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8071895424836601 [2024-11-10 10:30:56,127 INFO L175 Difference]: Start difference. First operand has 83 places, 131 transitions, 861 flow. Second operand 6 states and 247 transitions. [2024-11-10 10:30:56,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 264 transitions, 2098 flow [2024-11-10 10:30:56,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 264 transitions, 1984 flow, removed 40 selfloop flow, removed 1 redundant places. [2024-11-10 10:30:56,216 INFO L231 Difference]: Finished difference. Result has 90 places, 181 transitions, 1366 flow [2024-11-10 10:30:56,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1366, PETRI_PLACES=90, PETRI_TRANSITIONS=181} [2024-11-10 10:30:56,216 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places. [2024-11-10 10:30:56,216 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 181 transitions, 1366 flow [2024-11-10 10:30:56,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:30:56,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:56,217 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:56,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 10:30:56,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:56,418 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:30:56,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2069333305, now seen corresponding path program 5 times [2024-11-10 10:30:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:56,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690323106] [2024-11-10 10:30:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:56,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690323106] [2024-11-10 10:30:56,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690323106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:56,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084999327] [2024-11-10 10:30:56,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:30:56,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:56,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:56,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:56,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:30:56,697 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-10 10:30:56,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:56,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:30:56,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:56,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:56,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084999327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:56,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:56,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-10 10:30:56,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441810050] [2024-11-10 10:30:56,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:56,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:30:56,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:56,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:30:56,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:30:56,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2024-11-10 10:30:56,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 181 transitions, 1366 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2024-11-10 10:30:56,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:56,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2024-11-10 10:30:56,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:10,992 INFO L124 PetriNetUnfolderBase]: 72131/130723 cut-off events. [2024-11-10 10:31:10,992 INFO L125 PetriNetUnfolderBase]: For 274096/274479 co-relation queries the response was YES. [2024-11-10 10:31:11,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438277 conditions, 130723 events. 72131/130723 cut-off events. For 274096/274479 co-relation queries the response was YES. Maximal size of possible extension queue 5009. Compared 1384609 event pairs, 6874 based on Foata normal form. 109/128249 useless extension candidates. Maximal degree in co-relation 438253. Up to 23338 conditions per place. [2024-11-10 10:31:12,295 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 170 selfloop transitions, 162 changer transitions 1/357 dead transitions. [2024-11-10 10:31:12,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 357 transitions, 2902 flow [2024-11-10 10:31:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:31:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:31:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 341 transitions. [2024-11-10 10:31:12,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8357843137254902 [2024-11-10 10:31:12,297 INFO L175 Difference]: Start difference. First operand has 90 places, 181 transitions, 1366 flow. Second operand 8 states and 341 transitions. [2024-11-10 10:31:12,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 357 transitions, 2902 flow [2024-11-10 10:31:12,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 357 transitions, 2890 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-10 10:31:12,390 INFO L231 Difference]: Finished difference. Result has 98 places, 217 transitions, 1967 flow [2024-11-10 10:31:12,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1967, PETRI_PLACES=98, PETRI_TRANSITIONS=217} [2024-11-10 10:31:12,391 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 50 predicate places. [2024-11-10 10:31:12,391 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 217 transitions, 1967 flow [2024-11-10 10:31:12,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2024-11-10 10:31:12,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:12,392 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:12,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 10:31:12,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 10:31:12,596 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:31:12,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1052375512, now seen corresponding path program 6 times [2024-11-10 10:31:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225872572] [2024-11-10 10:31:12,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:12,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 10:31:12,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225872572] [2024-11-10 10:31:12,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225872572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857541751] [2024-11-10 10:31:12,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:31:12,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:12,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:12,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:31:13,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:31:13,248 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-10 10:31:13,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:31:13,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:31:13,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 10:31:13,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 10:31:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857541751] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:13,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:31:13,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 11 [2024-11-10 10:31:13,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631589755] [2024-11-10 10:31:13,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:13,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:13,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:13,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:31:13,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2024-11-10 10:31:13,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 217 transitions, 1967 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2024-11-10 10:31:13,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:13,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2024-11-10 10:31:13,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand