./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:41:06,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:41:06,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:41:06,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:41:06,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:41:06,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:41:06,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:41:06,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:41:06,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:41:06,692 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:41:06,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:41:06,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:41:06,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:41:06,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:41:06,692 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:41:06,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:41:06,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:41:06,694 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:41:06,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:41:06,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:41:06,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:41:06,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:41:06,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:41:06,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:41:06,695 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:41:06,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:41:06,695 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:41:06,695 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:41:06,695 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:41:06,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:41:06,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:41:06,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:41:06,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:41:06,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:41:06,696 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2025-02-06 04:41:06,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:41:06,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:41:06,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:41:06,941 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:41:06,941 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:41:06,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2025-02-06 04:41:08,089 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b735e6a5d/59bd622038b5431795cdd1ad0a1aa661/FLAG59772f3bf [2025-02-06 04:41:08,326 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:41:08,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2025-02-06 04:41:08,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b735e6a5d/59bd622038b5431795cdd1ad0a1aa661/FLAG59772f3bf [2025-02-06 04:41:08,665 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b735e6a5d/59bd622038b5431795cdd1ad0a1aa661 [2025-02-06 04:41:08,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:41:08,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:41:08,669 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:41:08,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:41:08,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:41:08,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40242edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08, skipping insertion in model container [2025-02-06 04:41:08,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,684 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:41:08,809 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2025-02-06 04:41:08,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:41:08,831 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:41:08,851 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2025-02-06 04:41:08,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:41:08,872 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:41:08,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08 WrapperNode [2025-02-06 04:41:08,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:41:08,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:41:08,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:41:08,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:41:08,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,905 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 150 [2025-02-06 04:41:08,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:41:08,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:41:08,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:41:08,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:41:08,915 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,922 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,938 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 04:41:08,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,946 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:41:08,958 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:41:08,958 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:41:08,958 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:41:08,959 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (1/1) ... [2025-02-06 04:41:08,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:41:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:08,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:41:08,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:41:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:41:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:41:09,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:41:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:41:09,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:41:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:41:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:41:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:41:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:41:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:41:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:41:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:41:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:41:09,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:41:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:41:09,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:41:09,007 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:41:09,080 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:41:09,082 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:41:09,288 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:41:09,289 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:41:09,445 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:41:09,445 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:41:09,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:41:09 BoogieIcfgContainer [2025-02-06 04:41:09,446 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:41:09,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:41:09,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:41:09,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:41:09,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:41:08" (1/3) ... [2025-02-06 04:41:09,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e8d922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:41:09, skipping insertion in model container [2025-02-06 04:41:09,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:08" (2/3) ... [2025-02-06 04:41:09,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e8d922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:41:09, skipping insertion in model container [2025-02-06 04:41:09,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:41:09" (3/3) ... [2025-02-06 04:41:09,455 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2025-02-06 04:41:09,466 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:41:09,467 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-2-nl.wvr.c that has 3 procedures, 26 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-06 04:41:09,467 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:41:09,507 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 04:41:09,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2025-02-06 04:41:09,560 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-02-06 04:41:09,561 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:41:09,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2025-02-06 04:41:09,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2025-02-06 04:41:09,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2025-02-06 04:41:09,579 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:41:09,589 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;@118794fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:41:09,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:41:09,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:41:09,596 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2025-02-06 04:41:09,596 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:41:09,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:09,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:09,597 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:09,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:09,601 INFO L85 PathProgramCache]: Analyzing trace with hash -491766027, now seen corresponding path program 1 times [2025-02-06 04:41:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:09,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997961820] [2025-02-06 04:41:09,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:09,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:09,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:41:09,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:41:09,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:09,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:09,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:09,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997961820] [2025-02-06 04:41:09,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997961820] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:09,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:09,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:41:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816216080] [2025-02-06 04:41:09,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:09,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 04:41:09,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:09,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 04:41:09,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 04:41:09,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 04:41:09,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2025-02-06 04:41:09,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:09,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 04:41:09,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:09,903 INFO L124 PetriNetUnfolderBase]: 108/212 cut-off events. [2025-02-06 04:41:09,904 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-06 04:41:09,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 212 events. 108/212 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 695 event pairs, 83 based on Foata normal form. 13/209 useless extension candidates. Maximal degree in co-relation 370. Up to 178 conditions per place. [2025-02-06 04:41:09,908 INFO L140 encePairwiseOnDemand]: 28/29 looper letters, 20 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2025-02-06 04:41:09,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 102 flow [2025-02-06 04:41:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 04:41:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 04:41:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2025-02-06 04:41:09,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2025-02-06 04:41:09,921 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 2 states and 35 transitions. [2025-02-06 04:41:09,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 102 flow [2025-02-06 04:41:09,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:41:09,926 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2025-02-06 04:41:09,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2025-02-06 04:41:09,930 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2025-02-06 04:41:09,930 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2025-02-06 04:41:09,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2025-02-06 04:41:09,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:09,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:09,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:41:09,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:09,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash -114148433, now seen corresponding path program 1 times [2025-02-06 04:41:09,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:09,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641813058] [2025-02-06 04:41:09,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:09,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:09,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 04:41:09,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 04:41:09,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:09,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:10,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:10,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:10,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641813058] [2025-02-06 04:41:10,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641813058] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:10,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:10,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:41:10,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188008062] [2025-02-06 04:41:10,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:10,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:41:10,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:10,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:41:10,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:41:10,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 04:41:10,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-02-06 04:41:10,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:10,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 04:41:10,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:10,142 INFO L124 PetriNetUnfolderBase]: 116/229 cut-off events. [2025-02-06 04:41:10,142 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:41:10,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 229 events. 116/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 732 event pairs, 34 based on Foata normal form. 6/222 useless extension candidates. Maximal degree in co-relation 430. Up to 159 conditions per place. [2025-02-06 04:41:10,144 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 24 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2025-02-06 04:41:10,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 123 flow [2025-02-06 04:41:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:41:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:41:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2025-02-06 04:41:10,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2025-02-06 04:41:10,146 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 3 states and 49 transitions. [2025-02-06 04:41:10,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 123 flow [2025-02-06 04:41:10,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 123 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:41:10,148 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 73 flow [2025-02-06 04:41:10,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2025-02-06 04:41:10,148 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2025-02-06 04:41:10,148 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 73 flow [2025-02-06 04:41:10,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-02-06 04:41:10,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:10,149 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:10,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:41:10,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:10,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1789211843, now seen corresponding path program 2 times [2025-02-06 04:41:10,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:10,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086953999] [2025-02-06 04:41:10,150 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:10,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:10,161 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-02-06 04:41:10,178 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 04:41:10,178 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:41:10,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:10,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:10,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086953999] [2025-02-06 04:41:10,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086953999] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:10,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:10,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:41:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259576716] [2025-02-06 04:41:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:10,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:41:10,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:10,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:41:10,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:41:10,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 04:41:10,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2025-02-06 04:41:10,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:10,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 04:41:10,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:10,442 INFO L124 PetriNetUnfolderBase]: 129/274 cut-off events. [2025-02-06 04:41:10,444 INFO L125 PetriNetUnfolderBase]: For 48/50 co-relation queries the response was YES. [2025-02-06 04:41:10,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 274 events. 129/274 cut-off events. For 48/50 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 998 event pairs, 93 based on Foata normal form. 11/272 useless extension candidates. Maximal degree in co-relation 572. Up to 193 conditions per place. [2025-02-06 04:41:10,448 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 21 selfloop transitions, 2 changer transitions 8/36 dead transitions. [2025-02-06 04:41:10,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 155 flow [2025-02-06 04:41:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:41:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:41:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2025-02-06 04:41:10,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2025-02-06 04:41:10,450 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 73 flow. Second operand 4 states and 59 transitions. [2025-02-06 04:41:10,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 155 flow [2025-02-06 04:41:10,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:41:10,452 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 86 flow [2025-02-06 04:41:10,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2025-02-06 04:41:10,452 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2025-02-06 04:41:10,454 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 86 flow [2025-02-06 04:41:10,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2025-02-06 04:41:10,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:10,455 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:10,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:41:10,455 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:10,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:10,456 INFO L85 PathProgramCache]: Analyzing trace with hash -134433611, now seen corresponding path program 1 times [2025-02-06 04:41:10,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:10,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750581782] [2025-02-06 04:41:10,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:10,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:10,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:41:10,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:10,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:10,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:11,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750581782] [2025-02-06 04:41:11,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750581782] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:11,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:11,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:11,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194178325] [2025-02-06 04:41:11,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:11,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:11,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:11,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:11,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 04:41:11,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 86 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:11,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:11,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 04:41:11,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:11,277 INFO L124 PetriNetUnfolderBase]: 171/335 cut-off events. [2025-02-06 04:41:11,277 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2025-02-06 04:41:11,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 335 events. 171/335 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1272 event pairs, 10 based on Foata normal form. 1/335 useless extension candidates. Maximal degree in co-relation 728. Up to 199 conditions per place. [2025-02-06 04:41:11,280 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 42 selfloop transitions, 13 changer transitions 5/64 dead transitions. [2025-02-06 04:41:11,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 64 transitions, 299 flow [2025-02-06 04:41:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2025-02-06 04:41:11,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2025-02-06 04:41:11,282 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 86 flow. Second operand 10 states and 120 transitions. [2025-02-06 04:41:11,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 64 transitions, 299 flow [2025-02-06 04:41:11,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 64 transitions, 289 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-06 04:41:11,284 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 152 flow [2025-02-06 04:41:11,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2025-02-06 04:41:11,284 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2025-02-06 04:41:11,284 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 152 flow [2025-02-06 04:41:11,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:11,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:11,285 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:11,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:41:11,285 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:11,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2098808231, now seen corresponding path program 2 times [2025-02-06 04:41:11,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:11,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323633915] [2025-02-06 04:41:11,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:11,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:11,293 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:41:11,301 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 04:41:11,301 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:41:11,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:11,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:11,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323633915] [2025-02-06 04:41:11,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323633915] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:11,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:11,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903037829] [2025-02-06 04:41:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:11,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:11,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:11,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:11,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:11,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 04:41:11,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 152 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:11,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:11,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 04:41:11,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:11,846 INFO L124 PetriNetUnfolderBase]: 193/388 cut-off events. [2025-02-06 04:41:11,846 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2025-02-06 04:41:11,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 388 events. 193/388 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1625 event pairs, 24 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1051. Up to 226 conditions per place. [2025-02-06 04:41:11,849 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 44 selfloop transitions, 20 changer transitions 5/73 dead transitions. [2025-02-06 04:41:11,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 428 flow [2025-02-06 04:41:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2025-02-06 04:41:11,850 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4241379310344828 [2025-02-06 04:41:11,850 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 152 flow. Second operand 10 states and 123 transitions. [2025-02-06 04:41:11,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 428 flow [2025-02-06 04:41:11,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 419 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 04:41:11,853 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 274 flow [2025-02-06 04:41:11,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2025-02-06 04:41:11,853 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2025-02-06 04:41:11,853 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 274 flow [2025-02-06 04:41:11,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:11,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:11,854 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:11,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:41:11,854 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:11,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash -17130695, now seen corresponding path program 3 times [2025-02-06 04:41:11,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:11,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663613993] [2025-02-06 04:41:11,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:11,860 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:41:11,870 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 04:41:11,870 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:41:11,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:12,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:12,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663613993] [2025-02-06 04:41:12,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663613993] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:12,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:12,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:12,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299121966] [2025-02-06 04:41:12,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:12,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:12,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:12,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:12,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:12,234 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 04:41:12,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 274 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:12,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:12,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 04:41:12,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:12,441 INFO L124 PetriNetUnfolderBase]: 205/429 cut-off events. [2025-02-06 04:41:12,441 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2025-02-06 04:41:12,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 429 events. 205/429 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1949 event pairs, 9 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1350. Up to 213 conditions per place. [2025-02-06 04:41:12,445 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 48 selfloop transitions, 26 changer transitions 5/83 dead transitions. [2025-02-06 04:41:12,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 569 flow [2025-02-06 04:41:12,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:41:12,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:41:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2025-02-06 04:41:12,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4169278996865204 [2025-02-06 04:41:12,446 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 274 flow. Second operand 11 states and 133 transitions. [2025-02-06 04:41:12,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 569 flow [2025-02-06 04:41:12,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 546 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-06 04:41:12,450 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 349 flow [2025-02-06 04:41:12,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=349, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2025-02-06 04:41:12,450 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2025-02-06 04:41:12,450 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 349 flow [2025-02-06 04:41:12,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:12,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:12,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:12,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:41:12,451 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:12,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:12,451 INFO L85 PathProgramCache]: Analyzing trace with hash -613718905, now seen corresponding path program 4 times [2025-02-06 04:41:12,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:12,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300868222] [2025-02-06 04:41:12,451 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:41:12,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:12,457 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:41:12,470 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:12,470 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:41:12,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:12,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300868222] [2025-02-06 04:41:12,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300868222] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:12,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:12,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725607706] [2025-02-06 04:41:12,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:12,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:12,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:12,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:12,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2025-02-06 04:41:12,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 349 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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) [2025-02-06 04:41:12,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:12,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2025-02-06 04:41:12,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:13,060 INFO L124 PetriNetUnfolderBase]: 233/478 cut-off events. [2025-02-06 04:41:13,060 INFO L125 PetriNetUnfolderBase]: For 1007/1007 co-relation queries the response was YES. [2025-02-06 04:41:13,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 478 events. 233/478 cut-off events. For 1007/1007 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2186 event pairs, 38 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 1627. Up to 295 conditions per place. [2025-02-06 04:41:13,063 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 54 selfloop transitions, 23 changer transitions 5/85 dead transitions. [2025-02-06 04:41:13,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 662 flow [2025-02-06 04:41:13,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2025-02-06 04:41:13,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2025-02-06 04:41:13,064 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 349 flow. Second operand 10 states and 118 transitions. [2025-02-06 04:41:13,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 662 flow [2025-02-06 04:41:13,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 599 flow, removed 18 selfloop flow, removed 6 redundant places. [2025-02-06 04:41:13,068 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 404 flow [2025-02-06 04:41:13,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=404, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2025-02-06 04:41:13,069 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2025-02-06 04:41:13,069 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 404 flow [2025-02-06 04:41:13,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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) [2025-02-06 04:41:13,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:13,069 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:13,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:41:13,070 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:13,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:13,070 INFO L85 PathProgramCache]: Analyzing trace with hash -301066439, now seen corresponding path program 5 times [2025-02-06 04:41:13,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:13,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612134389] [2025-02-06 04:41:13,070 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:41:13,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:13,076 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:41:13,083 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:13,083 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:13,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:13,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:13,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612134389] [2025-02-06 04:41:13,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612134389] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:13,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:13,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72383944] [2025-02-06 04:41:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:13,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:13,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:13,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:13,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 04:41:13,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 404 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:13,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:13,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 04:41:13,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:13,610 INFO L124 PetriNetUnfolderBase]: 218/475 cut-off events. [2025-02-06 04:41:13,610 INFO L125 PetriNetUnfolderBase]: For 1008/1008 co-relation queries the response was YES. [2025-02-06 04:41:13,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 475 events. 218/475 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2283 event pairs, 22 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 1657. Up to 287 conditions per place. [2025-02-06 04:41:13,613 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 55 selfloop transitions, 23 changer transitions 5/87 dead transitions. [2025-02-06 04:41:13,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 695 flow [2025-02-06 04:41:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2025-02-06 04:41:13,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42758620689655175 [2025-02-06 04:41:13,614 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 404 flow. Second operand 10 states and 124 transitions. [2025-02-06 04:41:13,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 695 flow [2025-02-06 04:41:13,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 654 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-02-06 04:41:13,618 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 450 flow [2025-02-06 04:41:13,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=450, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2025-02-06 04:41:13,618 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2025-02-06 04:41:13,618 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 450 flow [2025-02-06 04:41:13,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:13,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:13,618 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:13,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:41:13,619 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:13,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash -69881945, now seen corresponding path program 6 times [2025-02-06 04:41:13,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:13,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409525669] [2025-02-06 04:41:13,619 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:41:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:13,628 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:41:13,635 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 04:41:13,635 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:41:13,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:13,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:13,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409525669] [2025-02-06 04:41:13,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409525669] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:13,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:13,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:13,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087132097] [2025-02-06 04:41:13,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:13,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:13,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:13,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:13,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:13,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 04:41:13,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 450 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:13,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:13,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 04:41:13,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:14,069 INFO L124 PetriNetUnfolderBase]: 214/462 cut-off events. [2025-02-06 04:41:14,070 INFO L125 PetriNetUnfolderBase]: For 1491/1499 co-relation queries the response was YES. [2025-02-06 04:41:14,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 462 events. 214/462 cut-off events. For 1491/1499 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2192 event pairs, 23 based on Foata normal form. 9/471 useless extension candidates. Maximal degree in co-relation 1731. Up to 291 conditions per place. [2025-02-06 04:41:14,073 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 49 selfloop transitions, 22 changer transitions 8/83 dead transitions. [2025-02-06 04:41:14,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 711 flow [2025-02-06 04:41:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2025-02-06 04:41:14,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2025-02-06 04:41:14,076 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 450 flow. Second operand 10 states and 119 transitions. [2025-02-06 04:41:14,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 711 flow [2025-02-06 04:41:14,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 654 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-02-06 04:41:14,084 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 446 flow [2025-02-06 04:41:14,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=446, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2025-02-06 04:41:14,085 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2025-02-06 04:41:14,085 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 446 flow [2025-02-06 04:41:14,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:14,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:14,087 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:14,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:41:14,087 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:14,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:14,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1493389465, now seen corresponding path program 7 times [2025-02-06 04:41:14,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:14,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657166702] [2025-02-06 04:41:14,088 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:41:14,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:14,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:41:14,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:14,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:14,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:14,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:14,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657166702] [2025-02-06 04:41:14,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657166702] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:14,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:14,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:14,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838307690] [2025-02-06 04:41:14,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:14,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:14,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:14,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:14,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:14,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 04:41:14,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:14,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:14,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 04:41:14,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:14,602 INFO L124 PetriNetUnfolderBase]: 223/489 cut-off events. [2025-02-06 04:41:14,602 INFO L125 PetriNetUnfolderBase]: For 1651/1663 co-relation queries the response was YES. [2025-02-06 04:41:14,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 489 events. 223/489 cut-off events. For 1651/1663 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2396 event pairs, 34 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 1828. Up to 297 conditions per place. [2025-02-06 04:41:14,606 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 58 selfloop transitions, 23 changer transitions 5/90 dead transitions. [2025-02-06 04:41:14,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 786 flow [2025-02-06 04:41:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2025-02-06 04:41:14,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43448275862068964 [2025-02-06 04:41:14,608 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 446 flow. Second operand 10 states and 126 transitions. [2025-02-06 04:41:14,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 786 flow [2025-02-06 04:41:14,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 732 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-02-06 04:41:14,613 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 489 flow [2025-02-06 04:41:14,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=489, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2025-02-06 04:41:14,616 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2025-02-06 04:41:14,616 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 489 flow [2025-02-06 04:41:14,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:14,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:14,617 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:14,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:41:14,617 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:14,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:14,618 INFO L85 PathProgramCache]: Analyzing trace with hash 160310119, now seen corresponding path program 8 times [2025-02-06 04:41:14,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:14,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628626591] [2025-02-06 04:41:14,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:14,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:14,624 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:41:14,634 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 04:41:14,634 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:41:14,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:14,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:14,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628626591] [2025-02-06 04:41:14,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628626591] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:14,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:14,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:14,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113741767] [2025-02-06 04:41:14,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:14,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:14,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:14,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:14,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:14,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 04:41:14,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 489 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:14,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:14,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 04:41:14,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:15,042 INFO L124 PetriNetUnfolderBase]: 219/476 cut-off events. [2025-02-06 04:41:15,045 INFO L125 PetriNetUnfolderBase]: For 2325/2351 co-relation queries the response was YES. [2025-02-06 04:41:15,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 476 events. 219/476 cut-off events. For 2325/2351 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2297 event pairs, 34 based on Foata normal form. 11/487 useless extension candidates. Maximal degree in co-relation 1892. Up to 301 conditions per place. [2025-02-06 04:41:15,049 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 52 selfloop transitions, 22 changer transitions 8/86 dead transitions. [2025-02-06 04:41:15,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 791 flow [2025-02-06 04:41:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2025-02-06 04:41:15,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2025-02-06 04:41:15,050 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 489 flow. Second operand 10 states and 121 transitions. [2025-02-06 04:41:15,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 791 flow [2025-02-06 04:41:15,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 724 flow, removed 13 selfloop flow, removed 7 redundant places. [2025-02-06 04:41:15,058 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 477 flow [2025-02-06 04:41:15,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2025-02-06 04:41:15,060 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2025-02-06 04:41:15,060 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 477 flow [2025-02-06 04:41:15,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:15,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:15,061 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:15,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 04:41:15,061 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:15,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:15,062 INFO L85 PathProgramCache]: Analyzing trace with hash 457002749, now seen corresponding path program 9 times [2025-02-06 04:41:15,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:15,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954436246] [2025-02-06 04:41:15,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:15,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:15,069 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:41:15,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 04:41:15,075 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:41:15,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:15,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:15,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954436246] [2025-02-06 04:41:15,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954436246] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:15,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:15,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:15,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121511900] [2025-02-06 04:41:15,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:15,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:15,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:15,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:15,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:15,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 04:41:15,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 477 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:15,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:15,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 04:41:15,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:15,547 INFO L124 PetriNetUnfolderBase]: 231/503 cut-off events. [2025-02-06 04:41:15,548 INFO L125 PetriNetUnfolderBase]: For 2568/2592 co-relation queries the response was YES. [2025-02-06 04:41:15,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 503 events. 231/503 cut-off events. For 2568/2592 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2428 event pairs, 40 based on Foata normal form. 5/507 useless extension candidates. Maximal degree in co-relation 1997. Up to 307 conditions per place. [2025-02-06 04:41:15,551 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 61 selfloop transitions, 22 changer transitions 5/92 dead transitions. [2025-02-06 04:41:15,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 840 flow [2025-02-06 04:41:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2025-02-06 04:41:15,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2025-02-06 04:41:15,552 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 477 flow. Second operand 10 states and 127 transitions. [2025-02-06 04:41:15,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 840 flow [2025-02-06 04:41:15,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 784 flow, removed 6 selfloop flow, removed 8 redundant places. [2025-02-06 04:41:15,558 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 526 flow [2025-02-06 04:41:15,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2025-02-06 04:41:15,558 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2025-02-06 04:41:15,558 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 526 flow [2025-02-06 04:41:15,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2025-02-06 04:41:15,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:15,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:15,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 04:41:15,559 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:15,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:15,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2110702333, now seen corresponding path program 10 times [2025-02-06 04:41:15,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:15,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58886501] [2025-02-06 04:41:15,559 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:41:15,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:15,564 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:41:15,569 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:15,570 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:41:15,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58886501] [2025-02-06 04:41:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58886501] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:15,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:15,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:41:15,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525370592] [2025-02-06 04:41:15,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:15,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:41:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:15,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:41:15,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:41:15,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2025-02-06 04:41:15,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 526 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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) [2025-02-06 04:41:15,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:15,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2025-02-06 04:41:15,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:15,976 INFO L124 PetriNetUnfolderBase]: 256/535 cut-off events. [2025-02-06 04:41:15,977 INFO L125 PetriNetUnfolderBase]: For 3594/3632 co-relation queries the response was YES. [2025-02-06 04:41:15,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 535 events. 256/535 cut-off events. For 3594/3632 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2543 event pairs, 50 based on Foata normal form. 13/548 useless extension candidates. Maximal degree in co-relation 2215. Up to 339 conditions per place. [2025-02-06 04:41:15,981 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 61 selfloop transitions, 22 changer transitions 8/94 dead transitions. [2025-02-06 04:41:15,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 868 flow [2025-02-06 04:41:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2025-02-06 04:41:15,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2025-02-06 04:41:15,983 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 526 flow. Second operand 10 states and 120 transitions. [2025-02-06 04:41:15,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 868 flow [2025-02-06 04:41:15,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 793 flow, removed 18 selfloop flow, removed 7 redundant places. [2025-02-06 04:41:15,990 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 522 flow [2025-02-06 04:41:15,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=522, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2025-02-06 04:41:15,991 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2025-02-06 04:41:15,992 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 522 flow [2025-02-06 04:41:15,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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) [2025-02-06 04:41:15,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:15,993 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:15,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 04:41:15,993 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:15,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1531857118, now seen corresponding path program 1 times [2025-02-06 04:41:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:15,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030809003] [2025-02-06 04:41:15,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:15,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:16,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:41:16,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:41:16,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:16,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:16,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:16,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030809003] [2025-02-06 04:41:16,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030809003] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:16,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112185203] [2025-02-06 04:41:16,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:16,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:16,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:16,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:41:16,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:41:16,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:41:16,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:41:16,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:16,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:16,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:41:16,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:16,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112185203] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:16,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:16,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 04:41:16,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532866870] [2025-02-06 04:41:16,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:16,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:41:16,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:16,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:41:16,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:41:16,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 04:41:16,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 522 flow. Second operand has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 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) [2025-02-06 04:41:16,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:16,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 04:41:16,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:16,470 INFO L124 PetriNetUnfolderBase]: 367/866 cut-off events. [2025-02-06 04:41:16,470 INFO L125 PetriNetUnfolderBase]: For 6347/6397 co-relation queries the response was YES. [2025-02-06 04:41:16,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 866 events. 367/866 cut-off events. For 6347/6397 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5176 event pairs, 172 based on Foata normal form. 38/903 useless extension candidates. Maximal degree in co-relation 3673. Up to 379 conditions per place. [2025-02-06 04:41:16,477 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 110 selfloop transitions, 5 changer transitions 10/130 dead transitions. [2025-02-06 04:41:16,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 130 transitions, 1272 flow [2025-02-06 04:41:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:41:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:41:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2025-02-06 04:41:16,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2025-02-06 04:41:16,478 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 522 flow. Second operand 6 states and 89 transitions. [2025-02-06 04:41:16,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 130 transitions, 1272 flow [2025-02-06 04:41:16,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 130 transitions, 1165 flow, removed 12 selfloop flow, removed 7 redundant places. [2025-02-06 04:41:16,487 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 517 flow [2025-02-06 04:41:16,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=517, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2025-02-06 04:41:16,487 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2025-02-06 04:41:16,488 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 517 flow [2025-02-06 04:41:16,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 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) [2025-02-06 04:41:16,488 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:16,488 INFO L206 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] [2025-02-06 04:41:16,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 04:41:16,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 04:41:16,691 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:16,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash 322661540, now seen corresponding path program 2 times [2025-02-06 04:41:16,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:16,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558157259] [2025-02-06 04:41:16,693 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:16,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:16,699 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-06 04:41:16,710 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 25 statements. [2025-02-06 04:41:16,711 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:41:16,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:16,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:16,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558157259] [2025-02-06 04:41:16,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558157259] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:16,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:16,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:41:16,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106075643] [2025-02-06 04:41:16,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:16,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:41:16,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:16,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:41:16,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:41:16,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2025-02-06 04:41:16,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2025-02-06 04:41:16,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:16,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2025-02-06 04:41:16,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:16,954 INFO L124 PetriNetUnfolderBase]: 431/946 cut-off events. [2025-02-06 04:41:16,954 INFO L125 PetriNetUnfolderBase]: For 5977/5979 co-relation queries the response was YES. [2025-02-06 04:41:16,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3852 conditions, 946 events. 431/946 cut-off events. For 5977/5979 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5264 event pairs, 66 based on Foata normal form. 13/958 useless extension candidates. Maximal degree in co-relation 3819. Up to 465 conditions per place. [2025-02-06 04:41:16,961 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 78 selfloop transitions, 19 changer transitions 0/100 dead transitions. [2025-02-06 04:41:16,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 100 transitions, 907 flow [2025-02-06 04:41:16,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:41:16,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:41:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2025-02-06 04:41:16,962 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2025-02-06 04:41:16,962 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 517 flow. Second operand 6 states and 81 transitions. [2025-02-06 04:41:16,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 100 transitions, 907 flow [2025-02-06 04:41:16,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 100 transitions, 884 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-02-06 04:41:16,970 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 620 flow [2025-02-06 04:41:16,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=620, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2025-02-06 04:41:16,971 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2025-02-06 04:41:16,971 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 620 flow [2025-02-06 04:41:16,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2025-02-06 04:41:16,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:16,971 INFO L206 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] [2025-02-06 04:41:16,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 04:41:16,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:16,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:16,972 INFO L85 PathProgramCache]: Analyzing trace with hash 401534397, now seen corresponding path program 1 times [2025-02-06 04:41:16,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:16,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874097469] [2025-02-06 04:41:16,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:16,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:41:16,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:41:16,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:16,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:17,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874097469] [2025-02-06 04:41:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874097469] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648904873] [2025-02-06 04:41:17,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:17,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:17,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:17,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:41:17,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:41:17,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:41:17,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:41:17,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:17,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:17,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 04:41:17,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:17,137 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:41:17,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648904873] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:17,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:41:17,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-02-06 04:41:17,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475374460] [2025-02-06 04:41:17,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:17,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:41:17,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:17,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:41:17,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:41:17,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 04:41:17,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 620 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-02-06 04:41:17,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:17,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 04:41:17,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:17,266 INFO L124 PetriNetUnfolderBase]: 411/1014 cut-off events. [2025-02-06 04:41:17,267 INFO L125 PetriNetUnfolderBase]: For 9244/9311 co-relation queries the response was YES. [2025-02-06 04:41:17,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4301 conditions, 1014 events. 411/1014 cut-off events. For 9244/9311 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5958 event pairs, 121 based on Foata normal form. 81/1092 useless extension candidates. Maximal degree in co-relation 4268. Up to 334 conditions per place. [2025-02-06 04:41:17,274 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 56 selfloop transitions, 8 changer transitions 27/97 dead transitions. [2025-02-06 04:41:17,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 921 flow [2025-02-06 04:41:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:41:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:41:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-06 04:41:17,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2025-02-06 04:41:17,276 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 620 flow. Second operand 4 states and 78 transitions. [2025-02-06 04:41:17,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 921 flow [2025-02-06 04:41:17,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 97 transitions, 863 flow, removed 18 selfloop flow, removed 7 redundant places. [2025-02-06 04:41:17,287 INFO L231 Difference]: Finished difference. Result has 91 places, 44 transitions, 349 flow [2025-02-06 04:41:17,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=91, PETRI_TRANSITIONS=44} [2025-02-06 04:41:17,289 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2025-02-06 04:41:17,289 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 44 transitions, 349 flow [2025-02-06 04:41:17,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-02-06 04:41:17,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:17,289 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 04:41:17,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 04:41:17,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-06 04:41:17,494 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:17,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:17,494 INFO L85 PathProgramCache]: Analyzing trace with hash -51269730, now seen corresponding path program 1 times [2025-02-06 04:41:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325350886] [2025-02-06 04:41:17,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:17,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:17,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:41:17,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:17,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:17,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:18,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:18,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325350886] [2025-02-06 04:41:18,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325350886] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:18,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888953737] [2025-02-06 04:41:18,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:18,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:18,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:18,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:41:18,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:41:18,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:41:18,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:18,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:18,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:18,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 04:41:18,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:19,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:19,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:19,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2025-02-06 04:41:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:19,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888953737] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:19,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:19,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 13] total 44 [2025-02-06 04:41:19,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148726955] [2025-02-06 04:41:19,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:19,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-06 04:41:19,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:19,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-06 04:41:19,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1835, Unknown=0, NotChecked=0, Total=1980 [2025-02-06 04:41:19,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-02-06 04:41:19,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 44 transitions, 349 flow. Second operand has 45 states, 45 states have (on average 5.711111111111111) internal successors, (257), 45 states have internal predecessors, (257), 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) [2025-02-06 04:41:19,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:19,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-02-06 04:41:19,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:21,675 INFO L124 PetriNetUnfolderBase]: 766/1432 cut-off events. [2025-02-06 04:41:21,675 INFO L125 PetriNetUnfolderBase]: For 12583/12583 co-relation queries the response was YES. [2025-02-06 04:41:21,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6325 conditions, 1432 events. 766/1432 cut-off events. For 12583/12583 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7159 event pairs, 106 based on Foata normal form. 1/1433 useless extension candidates. Maximal degree in co-relation 6292. Up to 776 conditions per place. [2025-02-06 04:41:21,684 INFO L140 encePairwiseOnDemand]: 14/29 looper letters, 109 selfloop transitions, 72 changer transitions 5/188 dead transitions. [2025-02-06 04:41:21,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 188 transitions, 1811 flow [2025-02-06 04:41:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 04:41:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-02-06 04:41:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 277 transitions. [2025-02-06 04:41:21,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2984913793103448 [2025-02-06 04:41:21,687 INFO L175 Difference]: Start difference. First operand has 91 places, 44 transitions, 349 flow. Second operand 32 states and 277 transitions. [2025-02-06 04:41:21,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 188 transitions, 1811 flow [2025-02-06 04:41:21,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 188 transitions, 1398 flow, removed 195 selfloop flow, removed 16 redundant places. [2025-02-06 04:41:21,700 INFO L231 Difference]: Finished difference. Result has 93 places, 111 transitions, 1038 flow [2025-02-06 04:41:21,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1038, PETRI_PLACES=93, PETRI_TRANSITIONS=111} [2025-02-06 04:41:21,700 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2025-02-06 04:41:21,700 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 111 transitions, 1038 flow [2025-02-06 04:41:21,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.711111111111111) internal successors, (257), 45 states have internal predecessors, (257), 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) [2025-02-06 04:41:21,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:21,702 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 04:41:21,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:41:21,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:21,906 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:21,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1678538566, now seen corresponding path program 2 times [2025-02-06 04:41:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:21,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286347698] [2025-02-06 04:41:21,907 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:21,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:21,914 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:41:21,929 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:21,930 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:21,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:22,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:22,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286347698] [2025-02-06 04:41:22,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286347698] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:22,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30256800] [2025-02-06 04:41:22,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:22,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:22,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:22,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:41:22,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:41:22,826 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:41:22,843 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:22,843 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:22,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:22,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-06 04:41:22,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:23,376 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2025-02-06 04:41:23,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2025-02-06 04:41:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:23,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:24,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:24,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 37 [2025-02-06 04:41:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30256800] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:24,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:24,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 53 [2025-02-06 04:41:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098336187] [2025-02-06 04:41:24,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:24,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-02-06 04:41:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:24,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-02-06 04:41:24,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2630, Unknown=0, NotChecked=0, Total=2862 [2025-02-06 04:41:24,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-02-06 04:41:24,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 111 transitions, 1038 flow. Second operand has 54 states, 54 states have (on average 5.444444444444445) internal successors, (294), 54 states have internal predecessors, (294), 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) [2025-02-06 04:41:24,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:24,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-02-06 04:41:24,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:30,641 INFO L124 PetriNetUnfolderBase]: 1058/1996 cut-off events. [2025-02-06 04:41:30,641 INFO L125 PetriNetUnfolderBase]: For 6917/6917 co-relation queries the response was YES. [2025-02-06 04:41:30,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8211 conditions, 1996 events. 1058/1996 cut-off events. For 6917/6917 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 11033 event pairs, 76 based on Foata normal form. 2/1998 useless extension candidates. Maximal degree in co-relation 8185. Up to 816 conditions per place. [2025-02-06 04:41:30,653 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 190 selfloop transitions, 206 changer transitions 10/408 dead transitions. [2025-02-06 04:41:30,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 408 transitions, 3688 flow [2025-02-06 04:41:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-02-06 04:41:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2025-02-06 04:41:30,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 579 transitions. [2025-02-06 04:41:30,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2893553223388306 [2025-02-06 04:41:30,655 INFO L175 Difference]: Start difference. First operand has 93 places, 111 transitions, 1038 flow. Second operand 69 states and 579 transitions. [2025-02-06 04:41:30,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 408 transitions, 3688 flow [2025-02-06 04:41:30,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 408 transitions, 3446 flow, removed 115 selfloop flow, removed 6 redundant places. [2025-02-06 04:41:30,679 INFO L231 Difference]: Finished difference. Result has 173 places, 280 transitions, 3001 flow [2025-02-06 04:41:30,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=3001, PETRI_PLACES=173, PETRI_TRANSITIONS=280} [2025-02-06 04:41:30,679 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2025-02-06 04:41:30,679 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 280 transitions, 3001 flow [2025-02-06 04:41:30,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.444444444444445) internal successors, (294), 54 states have internal predecessors, (294), 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) [2025-02-06 04:41:30,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:30,680 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 04:41:30,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:41:30,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 04:41:30,884 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:30,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1286310526, now seen corresponding path program 3 times [2025-02-06 04:41:30,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:30,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984856313] [2025-02-06 04:41:30,885 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:30,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:30,889 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:41:30,914 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:30,914 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:41:30,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:31,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:31,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984856313] [2025-02-06 04:41:31,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984856313] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:31,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509720249] [2025-02-06 04:41:31,666 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:31,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:31,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:31,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:41:31,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:41:31,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:41:31,730 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:31,730 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:41:31,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:31,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-06 04:41:31,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:32,175 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 04:41:32,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-06 04:41:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:32,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:32,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:32,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 35 [2025-02-06 04:41:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:33,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509720249] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:33,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:33,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2025-02-06 04:41:33,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013443288] [2025-02-06 04:41:33,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:33,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-02-06 04:41:33,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:33,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-02-06 04:41:33,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2515, Unknown=0, NotChecked=0, Total=2756 [2025-02-06 04:41:33,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-02-06 04:41:33,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 280 transitions, 3001 flow. Second operand has 53 states, 53 states have (on average 5.471698113207547) internal successors, (290), 53 states have internal predecessors, (290), 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) [2025-02-06 04:41:33,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:33,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-02-06 04:41:33,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:40,213 INFO L124 PetriNetUnfolderBase]: 1558/2953 cut-off events. [2025-02-06 04:41:40,213 INFO L125 PetriNetUnfolderBase]: For 14912/14912 co-relation queries the response was YES. [2025-02-06 04:41:40,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14516 conditions, 2953 events. 1558/2953 cut-off events. For 14912/14912 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 18340 event pairs, 25 based on Foata normal form. 3/2956 useless extension candidates. Maximal degree in co-relation 14474. Up to 988 conditions per place. [2025-02-06 04:41:40,235 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 235 selfloop transitions, 387 changer transitions 31/655 dead transitions. [2025-02-06 04:41:40,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 655 transitions, 7172 flow [2025-02-06 04:41:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-02-06 04:41:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2025-02-06 04:41:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 664 transitions. [2025-02-06 04:41:40,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30941286113699906 [2025-02-06 04:41:40,239 INFO L175 Difference]: Start difference. First operand has 173 places, 280 transitions, 3001 flow. Second operand 74 states and 664 transitions. [2025-02-06 04:41:40,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 655 transitions, 7172 flow [2025-02-06 04:41:40,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 655 transitions, 6779 flow, removed 189 selfloop flow, removed 7 redundant places. [2025-02-06 04:41:40,298 INFO L231 Difference]: Finished difference. Result has 259 places, 472 transitions, 6030 flow [2025-02-06 04:41:40,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=6030, PETRI_PLACES=259, PETRI_TRANSITIONS=472} [2025-02-06 04:41:40,298 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2025-02-06 04:41:40,299 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 472 transitions, 6030 flow [2025-02-06 04:41:40,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.471698113207547) internal successors, (290), 53 states have internal predecessors, (290), 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) [2025-02-06 04:41:40,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:40,299 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 04:41:40,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 04:41:40,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:40,504 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:40,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:40,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1626208518, now seen corresponding path program 4 times [2025-02-06 04:41:40,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:40,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395452296] [2025-02-06 04:41:40,504 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:41:40,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:40,509 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:41:40,520 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:40,521 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:41:40,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:41,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:41,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395452296] [2025-02-06 04:41:41,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395452296] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:41,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599885658] [2025-02-06 04:41:41,243 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:41:41,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:41,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:41,245 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:41:41,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 04:41:41,282 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:41:41,304 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:41,305 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:41:41,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:41,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-06 04:41:41,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:41,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:42,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:42,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 35 [2025-02-06 04:41:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:42,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599885658] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:42,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:42,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 53 [2025-02-06 04:41:42,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990163737] [2025-02-06 04:41:42,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:42,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-02-06 04:41:42,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:42,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-02-06 04:41:42,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2620, Unknown=0, NotChecked=0, Total=2862 [2025-02-06 04:41:42,929 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-02-06 04:41:42,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 472 transitions, 6030 flow. Second operand has 54 states, 54 states have (on average 5.444444444444445) internal successors, (294), 54 states have internal predecessors, (294), 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) [2025-02-06 04:41:42,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:42,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-02-06 04:41:42,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:49,652 INFO L124 PetriNetUnfolderBase]: 1773/3392 cut-off events. [2025-02-06 04:41:49,653 INFO L125 PetriNetUnfolderBase]: For 28359/28359 co-relation queries the response was YES. [2025-02-06 04:41:49,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19665 conditions, 3392 events. 1773/3392 cut-off events. For 28359/28359 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 22161 event pairs, 42 based on Foata normal form. 2/3394 useless extension candidates. Maximal degree in co-relation 19603. Up to 1157 conditions per place. [2025-02-06 04:41:49,676 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 293 selfloop transitions, 484 changer transitions 10/789 dead transitions. [2025-02-06 04:41:49,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 789 transitions, 10505 flow [2025-02-06 04:41:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-02-06 04:41:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2025-02-06 04:41:49,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 646 transitions. [2025-02-06 04:41:49,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31374453618261294 [2025-02-06 04:41:49,678 INFO L175 Difference]: Start difference. First operand has 259 places, 472 transitions, 6030 flow. Second operand 71 states and 646 transitions. [2025-02-06 04:41:49,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 789 transitions, 10505 flow [2025-02-06 04:41:49,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 789 transitions, 9684 flow, removed 395 selfloop flow, removed 12 redundant places. [2025-02-06 04:41:49,867 INFO L231 Difference]: Finished difference. Result has 328 places, 626 transitions, 8855 flow [2025-02-06 04:41:49,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5463, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=8855, PETRI_PLACES=328, PETRI_TRANSITIONS=626} [2025-02-06 04:41:49,868 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 299 predicate places. [2025-02-06 04:41:49,868 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 626 transitions, 8855 flow [2025-02-06 04:41:49,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.444444444444445) internal successors, (294), 54 states have internal predecessors, (294), 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) [2025-02-06 04:41:49,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:49,868 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 04:41:49,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 04:41:50,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:50,070 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:41:50,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash -131757448, now seen corresponding path program 5 times [2025-02-06 04:41:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153813622] [2025-02-06 04:41:50,071 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:41:50,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:50,075 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:41:50,083 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:50,083 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:50,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:50,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153813622] [2025-02-06 04:41:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153813622] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387417690] [2025-02-06 04:41:50,761 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:41:50,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:50,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:50,763 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:41:50,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 04:41:50,799 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:41:50,840 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:41:50,840 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:50,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:50,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-06 04:41:50,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:51,287 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 04:41:51,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-06 04:41:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:51,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:51,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:51,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2025-02-06 04:41:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:52,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387417690] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:52,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:52,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2025-02-06 04:41:52,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283875599] [2025-02-06 04:41:52,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:52,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-06 04:41:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:52,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-06 04:41:52,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2421, Unknown=0, NotChecked=0, Total=2652 [2025-02-06 04:41:52,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-02-06 04:41:52,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 626 transitions, 8855 flow. Second operand has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 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) [2025-02-06 04:41:52,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:52,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-02-06 04:41:52,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:08,487 INFO L124 PetriNetUnfolderBase]: 2864/5536 cut-off events. [2025-02-06 04:42:08,487 INFO L125 PetriNetUnfolderBase]: For 63675/63675 co-relation queries the response was YES. [2025-02-06 04:42:08,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34706 conditions, 5536 events. 2864/5536 cut-off events. For 63675/63675 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39360 event pairs, 57 based on Foata normal form. 3/5539 useless extension candidates. Maximal degree in co-relation 34628. Up to 1890 conditions per place. [2025-02-06 04:42:08,534 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 446 selfloop transitions, 915 changer transitions 12/1375 dead transitions. [2025-02-06 04:42:08,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1375 transitions, 19719 flow [2025-02-06 04:42:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2025-02-06 04:42:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2025-02-06 04:42:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 1243 transitions. [2025-02-06 04:42:08,538 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31516227180527384 [2025-02-06 04:42:08,539 INFO L175 Difference]: Start difference. First operand has 328 places, 626 transitions, 8855 flow. Second operand 136 states and 1243 transitions. [2025-02-06 04:42:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1375 transitions, 19719 flow [2025-02-06 04:42:09,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1375 transitions, 18784 flow, removed 361 selfloop flow, removed 24 redundant places. [2025-02-06 04:42:09,019 INFO L231 Difference]: Finished difference. Result has 479 places, 1026 transitions, 17399 flow [2025-02-06 04:42:09,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8355, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=136, PETRI_FLOW=17399, PETRI_PLACES=479, PETRI_TRANSITIONS=1026} [2025-02-06 04:42:09,020 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 450 predicate places. [2025-02-06 04:42:09,020 INFO L471 AbstractCegarLoop]: Abstraction has has 479 places, 1026 transitions, 17399 flow [2025-02-06 04:42:09,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 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) [2025-02-06 04:42:09,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:09,021 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 04:42:09,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 04:42:09,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:09,225 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:09,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1881352986, now seen corresponding path program 6 times [2025-02-06 04:42:09,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:09,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792790021] [2025-02-06 04:42:09,225 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:09,233 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:42:09,248 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:42:09,248 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:42:09,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:10,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792790021] [2025-02-06 04:42:10,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792790021] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016371340] [2025-02-06 04:42:10,016 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:10,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:10,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:10,018 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:10,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 04:42:10,060 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:42:10,084 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:42:10,084 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:42:10,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:10,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-06 04:42:10,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:10,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:11,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:11,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 35 [2025-02-06 04:42:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:11,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016371340] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:11,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:11,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 51 [2025-02-06 04:42:11,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888722921] [2025-02-06 04:42:11,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:11,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-06 04:42:11,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:11,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-06 04:42:11,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2438, Unknown=0, NotChecked=0, Total=2652 [2025-02-06 04:42:11,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-02-06 04:42:11,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1026 transitions, 17399 flow. Second operand has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 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) [2025-02-06 04:42:11,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:11,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-02-06 04:42:11,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:30,006 INFO L124 PetriNetUnfolderBase]: 3661/7213 cut-off events. [2025-02-06 04:42:30,006 INFO L125 PetriNetUnfolderBase]: For 112355/112355 co-relation queries the response was YES. [2025-02-06 04:42:30,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50579 conditions, 7213 events. 3661/7213 cut-off events. For 112355/112355 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 54446 event pairs, 120 based on Foata normal form. 52/7265 useless extension candidates. Maximal degree in co-relation 50463. Up to 2229 conditions per place. [2025-02-06 04:42:30,127 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 491 selfloop transitions, 937 changer transitions 208/1638 dead transitions. [2025-02-06 04:42:30,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1638 transitions, 27151 flow [2025-02-06 04:42:30,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2025-02-06 04:42:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2025-02-06 04:42:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 1385 transitions. [2025-02-06 04:42:30,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31420145190562615 [2025-02-06 04:42:30,130 INFO L175 Difference]: Start difference. First operand has 479 places, 1026 transitions, 17399 flow. Second operand 152 states and 1385 transitions. [2025-02-06 04:42:30,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 1638 transitions, 27151 flow [2025-02-06 04:42:31,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 1638 transitions, 25346 flow, removed 755 selfloop flow, removed 25 redundant places. [2025-02-06 04:42:31,258 INFO L231 Difference]: Finished difference. Result has 641 places, 1143 transitions, 20559 flow [2025-02-06 04:42:31,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=15866, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=814, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=152, PETRI_FLOW=20559, PETRI_PLACES=641, PETRI_TRANSITIONS=1143} [2025-02-06 04:42:31,259 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 612 predicate places. [2025-02-06 04:42:31,259 INFO L471 AbstractCegarLoop]: Abstraction has has 641 places, 1143 transitions, 20559 flow [2025-02-06 04:42:31,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 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) [2025-02-06 04:42:31,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:31,260 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 04:42:31,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 04:42:31,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:31,460 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:31,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash 208988350, now seen corresponding path program 7 times [2025-02-06 04:42:31,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:31,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885387647] [2025-02-06 04:42:31,461 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:31,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:31,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:42:31,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:42:31,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:31,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:32,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:32,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885387647] [2025-02-06 04:42:32,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885387647] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:32,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829545120] [2025-02-06 04:42:32,184 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:32,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:32,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:32,186 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:32,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 04:42:32,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:42:32,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:42:32,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:32,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:32,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 04:42:32,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:32,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:33,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:33,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2025-02-06 04:42:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:33,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829545120] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:33,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:33,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 12] total 43 [2025-02-06 04:42:33,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856048551] [2025-02-06 04:42:33,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:33,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-06 04:42:33,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:33,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-06 04:42:33,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1747, Unknown=0, NotChecked=0, Total=1892 [2025-02-06 04:42:33,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-02-06 04:42:33,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 1143 transitions, 20559 flow. Second operand has 44 states, 44 states have (on average 5.75) internal successors, (253), 44 states have internal predecessors, (253), 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) [2025-02-06 04:42:33,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:33,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-02-06 04:42:33,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:36,377 INFO L124 PetriNetUnfolderBase]: 3363/6660 cut-off events. [2025-02-06 04:42:36,377 INFO L125 PetriNetUnfolderBase]: For 129930/129930 co-relation queries the response was YES. [2025-02-06 04:42:36,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49914 conditions, 6660 events. 3363/6660 cut-off events. For 129930/129930 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 50234 event pairs, 251 based on Foata normal form. 4/6664 useless extension candidates. Maximal degree in co-relation 49769. Up to 2805 conditions per place. [2025-02-06 04:42:36,472 INFO L140 encePairwiseOnDemand]: 14/29 looper letters, 768 selfloop transitions, 520 changer transitions 8/1298 dead transitions. [2025-02-06 04:42:36,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 1298 transitions, 25041 flow [2025-02-06 04:42:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-06 04:42:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-06 04:42:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 315 transitions. [2025-02-06 04:42:36,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.329153605015674 [2025-02-06 04:42:36,474 INFO L175 Difference]: Start difference. First operand has 641 places, 1143 transitions, 20559 flow. Second operand 33 states and 315 transitions. [2025-02-06 04:42:36,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 1298 transitions, 25041 flow