./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:01:34,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:01:34,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 01:01:34,107 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:01:34,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:01:34,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:01:34,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:01:34,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:01:34,128 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 01:01:34,128 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 01:01:34,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:01:34,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:01:34,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:01:34,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:01:34,129 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:01:34,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:01:34,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:01:34,130 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:01:34,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:01:34,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:01:34,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:01:34,131 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:01:34,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:01:34,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:01:34,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:01:34,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:01:34,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:01:34,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:01:34,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:01:34,131 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/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 -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2025-03-14 01:01:34,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:01:34,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:01:34,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:01:34,378 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:01:34,379 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:01:34,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2025-03-14 01:01:35,599 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2b5a0974/e163691b688d45489fdef2d9e1a35a16/FLAG13d848fcf [2025-03-14 01:01:35,862 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:01:35,863 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2025-03-14 01:01:35,872 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2b5a0974/e163691b688d45489fdef2d9e1a35a16/FLAG13d848fcf [2025-03-14 01:01:36,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2b5a0974/e163691b688d45489fdef2d9e1a35a16 [2025-03-14 01:01:36,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:01:36,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:01:36,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:01:36,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:01:36,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:01:36,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5241e0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36, skipping insertion in model container [2025-03-14 01:01:36,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,181 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:01:36,317 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6540,6553] [2025-03-14 01:01:36,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:01:36,335 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:01:36,365 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6540,6553] [2025-03-14 01:01:36,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:01:36,382 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:01:36,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36 WrapperNode [2025-03-14 01:01:36,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:01:36,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:01:36,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:01:36,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:01:36,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,427 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 591 [2025-03-14 01:01:36,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:01:36,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:01:36,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:01:36,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:01:36,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,457 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-14 01:01:36,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,471 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:01:36,483 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:01:36,483 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:01:36,483 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:01:36,484 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (1/1) ... [2025-03-14 01:01:36,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:01:36,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:01:36,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-14 01:01:36,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-14 01:01:36,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:01:36,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:01:36,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:01:36,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:01:36,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:01:36,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-14 01:01:36,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-14 01:01:36,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 01:01:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 01:01:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 01:01:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 01:01:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 01:01:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:01:36,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:01:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 01:01:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 01:01:36,534 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:01:36,640 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:01:36,642 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:01:37,262 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:01:37,263 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:01:37,263 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:01:37,955 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:01:37,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:01:37 BoogieIcfgContainer [2025-03-14 01:01:37,956 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:01:37,958 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:01:37,958 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:01:37,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:01:37,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:01:36" (1/3) ... [2025-03-14 01:01:37,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37008410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:01:37, skipping insertion in model container [2025-03-14 01:01:37,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:36" (2/3) ... [2025-03-14 01:01:37,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37008410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:01:37, skipping insertion in model container [2025-03-14 01:01:37,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:01:37" (3/3) ... [2025-03-14 01:01:37,963 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2025-03-14 01:01:38,009 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:01:38,012 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-nzb-file-subst.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-14 01:01:38,012 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:01:38,110 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-14 01:01:38,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2025-03-14 01:01:38,178 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2025-03-14 01:01:38,182 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:01:38,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-03-14 01:01:38,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2025-03-14 01:01:38,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2025-03-14 01:01:38,195 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:01:38,206 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;@782828ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:01:38,206 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 01:01:38,230 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:01:38,231 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2025-03-14 01:01:38,231 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:01:38,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:38,231 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] [2025-03-14 01:01:38,232 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:01:38,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:38,236 INFO L85 PathProgramCache]: Analyzing trace with hash 654225432, now seen corresponding path program 1 times [2025-03-14 01:01:38,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:38,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649294998] [2025-03-14 01:01:38,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:01:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:38,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-14 01:01:38,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:01:38,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:01:38,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:01:38,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:38,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649294998] [2025-03-14 01:01:38,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649294998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:38,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:38,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 01:01:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599978195] [2025-03-14 01:01:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:38,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:01:38,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:38,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:01:38,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:01:38,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:38,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-14 01:01:38,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:38,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:38,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:39,324 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2025-03-14 01:01:39,324 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2025-03-14 01:01:39,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12259 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2025-03-14 01:01:39,346 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2025-03-14 01:01:39,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2025-03-14 01:01:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:01:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:01:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2025-03-14 01:01:39,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2025-03-14 01:01:39,356 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2025-03-14 01:01:39,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2025-03-14 01:01:39,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-14 01:01:39,364 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2025-03-14 01:01:39,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2025-03-14 01:01:39,369 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2025-03-14 01:01:39,369 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2025-03-14 01:01:39,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-14 01:01:39,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:39,370 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, 1, 1, 1] [2025-03-14 01:01:39,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:01:39,370 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:01:39,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:39,371 INFO L85 PathProgramCache]: Analyzing trace with hash 671603589, now seen corresponding path program 1 times [2025-03-14 01:01:39,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:39,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250948579] [2025-03-14 01:01:39,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:01:39,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:39,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:01:39,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:01:39,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:01:39,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:01:39,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:39,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250948579] [2025-03-14 01:01:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250948579] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:01:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911394202] [2025-03-14 01:01:39,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:01:39,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:39,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:01:39,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:01:39,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 01:01:39,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:01:39,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:01:39,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:01:39,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:39,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-14 01:01:39,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:01:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:01:39,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:01:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:01:39,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911394202] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:01:39,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:01:39,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2025-03-14 01:01:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679570841] [2025-03-14 01:01:39,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:01:39,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-14 01:01:39,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:39,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-14 01:01:39,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-03-14 01:01:39,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:39,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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) [2025-03-14 01:01:39,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:39,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:39,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:40,292 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2025-03-14 01:01:40,293 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-14 01:01:40,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12273 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2025-03-14 01:01:40,308 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2025-03-14 01:01:40,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2025-03-14 01:01:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:01:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:01:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-14 01:01:40,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2025-03-14 01:01:40,312 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2025-03-14 01:01:40,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2025-03-14 01:01:40,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:01:40,314 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2025-03-14 01:01:40,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2025-03-14 01:01:40,314 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2025-03-14 01:01:40,314 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2025-03-14 01:01:40,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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) [2025-03-14 01:01:40,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:40,316 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:40,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-14 01:01:40,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:40,517 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:01:40,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:40,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1245307706, now seen corresponding path program 2 times [2025-03-14 01:01:40,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:40,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149993998] [2025-03-14 01:01:40,518 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:01:40,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:40,542 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-14 01:01:40,716 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-14 01:01:40,716 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:01:40,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-14 01:01:41,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:41,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149993998] [2025-03-14 01:01:41,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149993998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:41,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:41,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:01:41,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762865796] [2025-03-14 01:01:41,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:41,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:01:41,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:41,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:01:41,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:01:41,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:41,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:01:41,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:41,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:41,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:42,575 INFO L124 PetriNetUnfolderBase]: 3867/5443 cut-off events. [2025-03-14 01:01:42,575 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2025-03-14 01:01:42,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 5443 events. 3867/5443 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 24874 event pairs, 1692 based on Foata normal form. 1/4412 useless extension candidates. Maximal degree in co-relation 10934. Up to 3132 conditions per place. [2025-03-14 01:01:42,600 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 111 selfloop transitions, 13 changer transitions 2/127 dead transitions. [2025-03-14 01:01:42,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 127 transitions, 623 flow [2025-03-14 01:01:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:01:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:01:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2025-03-14 01:01:42,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2025-03-14 01:01:42,603 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 135 transitions. [2025-03-14 01:01:42,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 127 transitions, 623 flow [2025-03-14 01:01:42,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 127 transitions, 599 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-03-14 01:01:42,607 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 291 flow [2025-03-14 01:01:42,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2025-03-14 01:01:42,609 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2025-03-14 01:01:42,609 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 291 flow [2025-03-14 01:01:42,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:01:42,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:42,609 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:42,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:01:42,610 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:01:42,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:42,611 INFO L85 PathProgramCache]: Analyzing trace with hash 407664732, now seen corresponding path program 3 times [2025-03-14 01:01:42,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:42,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750288492] [2025-03-14 01:01:42,611 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:01:42,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:42,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 3 equivalence classes. [2025-03-14 01:01:42,722 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-14 01:01:42,722 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:01:42,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-14 01:01:43,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:43,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750288492] [2025-03-14 01:01:43,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750288492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:43,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:43,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:01:43,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059929674] [2025-03-14 01:01:43,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:43,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:01:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:43,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:01:43,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:01:43,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:43,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:01:43,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:43,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:43,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:45,106 INFO L124 PetriNetUnfolderBase]: 9197/12921 cut-off events. [2025-03-14 01:01:45,106 INFO L125 PetriNetUnfolderBase]: For 6208/6208 co-relation queries the response was YES. [2025-03-14 01:01:45,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32130 conditions, 12921 events. 9197/12921 cut-off events. For 6208/6208 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 68118 event pairs, 2112 based on Foata normal form. 1/12614 useless extension candidates. Maximal degree in co-relation 32050. Up to 4719 conditions per place. [2025-03-14 01:01:45,162 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 142 selfloop transitions, 56 changer transitions 1/200 dead transitions. [2025-03-14 01:01:45,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 200 transitions, 1141 flow [2025-03-14 01:01:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:01:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:01:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2025-03-14 01:01:45,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5626822157434402 [2025-03-14 01:01:45,165 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 291 flow. Second operand 7 states and 193 transitions. [2025-03-14 01:01:45,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 200 transitions, 1141 flow [2025-03-14 01:01:45,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 200 transitions, 1131 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-14 01:01:45,172 INFO L231 Difference]: Finished difference. Result has 62 places, 115 transitions, 763 flow [2025-03-14 01:01:45,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=763, PETRI_PLACES=62, PETRI_TRANSITIONS=115} [2025-03-14 01:01:45,174 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2025-03-14 01:01:45,174 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 115 transitions, 763 flow [2025-03-14 01:01:45,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:01:45,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:45,175 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:45,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:01:45,175 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:01:45,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash 382692966, now seen corresponding path program 4 times [2025-03-14 01:01:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:45,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847094176] [2025-03-14 01:01:45,176 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:01:45,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:45,193 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-14 01:01:45,205 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-14 01:01:45,206 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:01:45,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-14 01:01:45,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:45,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847094176] [2025-03-14 01:01:45,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847094176] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:01:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661559473] [2025-03-14 01:01:45,300 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:01:45,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:45,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:01:45,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:01:45,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 01:01:45,417 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-14 01:01:45,451 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-14 01:01:45,451 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:01:45,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:45,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:01:45,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:01:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-14 01:01:45,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:01:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-14 01:01:45,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661559473] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:01:45,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:01:45,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-03-14 01:01:45,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798607345] [2025-03-14 01:01:45,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:01:45,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:01:45,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:45,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:01:45,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:01:45,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:45,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 115 transitions, 763 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2025-03-14 01:01:45,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:45,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:45,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:46,896 INFO L124 PetriNetUnfolderBase]: 9197/12924 cut-off events. [2025-03-14 01:01:46,897 INFO L125 PetriNetUnfolderBase]: For 17372/17372 co-relation queries the response was YES. [2025-03-14 01:01:46,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38622 conditions, 12924 events. 9197/12924 cut-off events. For 17372/17372 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66740 event pairs, 6326 based on Foata normal form. 1/12617 useless extension candidates. Maximal degree in co-relation 38526. Up to 12902 conditions per place. [2025-03-14 01:01:46,954 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 99 selfloop transitions, 18 changer transitions 0/118 dead transitions. [2025-03-14 01:01:46,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 118 transitions, 1015 flow [2025-03-14 01:01:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:01:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:01:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-03-14 01:01:46,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2025-03-14 01:01:46,956 INFO L175 Difference]: Start difference. First operand has 62 places, 115 transitions, 763 flow. Second operand 7 states and 87 transitions. [2025-03-14 01:01:46,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 118 transitions, 1015 flow [2025-03-14 01:01:46,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 118 transitions, 967 flow, removed 24 selfloop flow, removed 0 redundant places. [2025-03-14 01:01:46,997 INFO L231 Difference]: Finished difference. Result has 69 places, 118 transitions, 783 flow [2025-03-14 01:01:46,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=783, PETRI_PLACES=69, PETRI_TRANSITIONS=118} [2025-03-14 01:01:46,998 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2025-03-14 01:01:46,998 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 118 transitions, 783 flow [2025-03-14 01:01:46,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2025-03-14 01:01:46,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:46,998 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:47,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-14 01:01:47,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:47,199 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:01:47,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash 292873019, now seen corresponding path program 5 times [2025-03-14 01:01:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:47,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13313810] [2025-03-14 01:01:47,199 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:01:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:47,222 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-03-14 01:01:47,456 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-03-14 01:01:47,457 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-14 01:01:47,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-14 01:01:48,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:48,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13313810] [2025-03-14 01:01:48,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13313810] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:01:48,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775404534] [2025-03-14 01:01:48,877 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:01:48,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:48,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:01:48,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:01:48,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 01:01:49,002 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-03-14 01:01:49,148 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-03-14 01:01:49,148 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-14 01:01:49,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:49,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:01:49,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:01:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:01:49,958 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:01:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775404534] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:49,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:01:49,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2025-03-14 01:01:49,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715306100] [2025-03-14 01:01:49,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:49,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:01:49,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:49,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:01:49,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:01:49,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:49,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 118 transitions, 783 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:01:49,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:49,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:49,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:51,656 INFO L124 PetriNetUnfolderBase]: 10383/14761 cut-off events. [2025-03-14 01:01:51,656 INFO L125 PetriNetUnfolderBase]: For 15988/15988 co-relation queries the response was YES. [2025-03-14 01:01:51,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41696 conditions, 14761 events. 10383/14761 cut-off events. For 15988/15988 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 79631 event pairs, 6106 based on Foata normal form. 1/14392 useless extension candidates. Maximal degree in co-relation 41579. Up to 12413 conditions per place. [2025-03-14 01:01:51,720 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 159 selfloop transitions, 6 changer transitions 8/174 dead transitions. [2025-03-14 01:01:51,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 174 transitions, 1367 flow [2025-03-14 01:01:51,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:01:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:01:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2025-03-14 01:01:51,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4326530612244898 [2025-03-14 01:01:51,722 INFO L175 Difference]: Start difference. First operand has 69 places, 118 transitions, 783 flow. Second operand 5 states and 106 transitions. [2025-03-14 01:01:51,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 174 transitions, 1367 flow [2025-03-14 01:01:51,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 174 transitions, 1331 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-14 01:01:51,762 INFO L231 Difference]: Finished difference. Result has 72 places, 121 transitions, 804 flow [2025-03-14 01:01:51,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=72, PETRI_TRANSITIONS=121} [2025-03-14 01:01:51,763 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2025-03-14 01:01:51,763 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 121 transitions, 804 flow [2025-03-14 01:01:51,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:01:51,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:51,763 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:51,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-14 01:01:51,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:51,964 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:01:51,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:51,964 INFO L85 PathProgramCache]: Analyzing trace with hash 192323227, now seen corresponding path program 6 times [2025-03-14 01:01:51,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:51,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81606236] [2025-03-14 01:01:51,964 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:01:51,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:51,979 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-03-14 01:01:52,010 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-14 01:01:52,011 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:01:52,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:01:53,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:53,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81606236] [2025-03-14 01:01:53,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81606236] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:53,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:53,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:01:53,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495548746] [2025-03-14 01:01:53,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:53,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:01:53,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:53,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:01:53,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-14 01:01:53,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:53,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 121 transitions, 804 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-14 01:01:53,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:53,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:53,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:54,767 INFO L124 PetriNetUnfolderBase]: 10788/15352 cut-off events. [2025-03-14 01:01:54,767 INFO L125 PetriNetUnfolderBase]: For 20909/20909 co-relation queries the response was YES. [2025-03-14 01:01:54,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44183 conditions, 15352 events. 10788/15352 cut-off events. For 20909/20909 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 84891 event pairs, 4180 based on Foata normal form. 1/14983 useless extension candidates. Maximal degree in co-relation 44092. Up to 6845 conditions per place. [2025-03-14 01:01:54,854 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 140 selfloop transitions, 44 changer transitions 2/187 dead transitions. [2025-03-14 01:01:54,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 187 transitions, 1442 flow [2025-03-14 01:01:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:01:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:01:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2025-03-14 01:01:54,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2025-03-14 01:01:54,856 INFO L175 Difference]: Start difference. First operand has 72 places, 121 transitions, 804 flow. Second operand 6 states and 135 transitions. [2025-03-14 01:01:54,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 187 transitions, 1442 flow [2025-03-14 01:01:54,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 187 transitions, 1431 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-14 01:01:54,927 INFO L231 Difference]: Finished difference. Result has 77 places, 134 transitions, 1071 flow [2025-03-14 01:01:54,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1071, PETRI_PLACES=77, PETRI_TRANSITIONS=134} [2025-03-14 01:01:54,932 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2025-03-14 01:01:54,933 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 134 transitions, 1071 flow [2025-03-14 01:01:54,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-14 01:01:54,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:54,933 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:54,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 01:01:54,933 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:01:54,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash -168228379, now seen corresponding path program 7 times [2025-03-14 01:01:54,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876282895] [2025-03-14 01:01:54,934 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:01:54,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:54,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-14 01:01:55,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-14 01:01:55,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:01:55,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:01:55,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:55,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876282895] [2025-03-14 01:01:55,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876282895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:55,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:55,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:01:55,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336434375] [2025-03-14 01:01:55,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:55,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:01:55,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:55,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:01:55,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:01:55,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:55,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 134 transitions, 1071 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:01:55,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:55,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:55,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:57,971 INFO L124 PetriNetUnfolderBase]: 11365/16242 cut-off events. [2025-03-14 01:01:57,971 INFO L125 PetriNetUnfolderBase]: For 29932/29932 co-relation queries the response was YES. [2025-03-14 01:01:58,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49455 conditions, 16242 events. 11365/16242 cut-off events. For 29932/29932 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 91089 event pairs, 5280 based on Foata normal form. 1/15873 useless extension candidates. Maximal degree in co-relation 49349. Up to 9511 conditions per place. [2025-03-14 01:01:58,037 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 164 selfloop transitions, 37 changer transitions 2/204 dead transitions. [2025-03-14 01:01:58,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 204 transitions, 1748 flow [2025-03-14 01:01:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:01:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:01:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2025-03-14 01:01:58,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2025-03-14 01:01:58,039 INFO L175 Difference]: Start difference. First operand has 77 places, 134 transitions, 1071 flow. Second operand 5 states and 135 transitions. [2025-03-14 01:01:58,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 204 transitions, 1748 flow [2025-03-14 01:01:58,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 204 transitions, 1733 flow, removed 7 selfloop flow, removed 1 redundant places. [2025-03-14 01:01:58,134 INFO L231 Difference]: Finished difference. Result has 83 places, 141 transitions, 1265 flow [2025-03-14 01:01:58,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1265, PETRI_PLACES=83, PETRI_TRANSITIONS=141} [2025-03-14 01:01:58,137 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2025-03-14 01:01:58,137 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 141 transitions, 1265 flow [2025-03-14 01:01:58,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:01:58,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:58,138 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:58,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-14 01:01:58,138 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:01:58,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash -520239365, now seen corresponding path program 8 times [2025-03-14 01:01:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131122751] [2025-03-14 01:01:58,139 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:01:58,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:58,157 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-14 01:01:58,185 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-14 01:01:58,185 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:01:58,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:01:58,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:58,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131122751] [2025-03-14 01:01:58,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131122751] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:58,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:58,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:01:58,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83735447] [2025-03-14 01:01:58,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:58,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:01:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:58,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:01:58,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:01:58,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:58,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 141 transitions, 1265 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:01:58,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:58,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:58,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:00,724 INFO L124 PetriNetUnfolderBase]: 14120/20133 cut-off events. [2025-03-14 01:02:00,724 INFO L125 PetriNetUnfolderBase]: For 46850/46850 co-relation queries the response was YES. [2025-03-14 01:02:00,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63383 conditions, 20133 events. 14120/20133 cut-off events. For 46850/46850 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 115754 event pairs, 6053 based on Foata normal form. 1/19664 useless extension candidates. Maximal degree in co-relation 63274. Up to 9654 conditions per place. [2025-03-14 01:02:00,910 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 170 selfloop transitions, 60 changer transitions 2/233 dead transitions. [2025-03-14 01:02:00,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 233 transitions, 2270 flow [2025-03-14 01:02:00,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-03-14 01:02:00,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2025-03-14 01:02:00,912 INFO L175 Difference]: Start difference. First operand has 83 places, 141 transitions, 1265 flow. Second operand 5 states and 129 transitions. [2025-03-14 01:02:00,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 233 transitions, 2270 flow [2025-03-14 01:02:01,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 233 transitions, 2257 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-14 01:02:01,138 INFO L231 Difference]: Finished difference. Result has 90 places, 174 transitions, 1848 flow [2025-03-14 01:02:01,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1848, PETRI_PLACES=90, PETRI_TRANSITIONS=174} [2025-03-14 01:02:01,139 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2025-03-14 01:02:01,139 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 174 transitions, 1848 flow [2025-03-14 01:02:01,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-14 01:02:01,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:01,139 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:01,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-14 01:02:01,139 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:01,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash -196742195, now seen corresponding path program 1 times [2025-03-14 01:02:01,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:01,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036640095] [2025-03-14 01:02:01,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:01,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:01,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-14 01:02:01,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:02:01,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:01,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:01,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:01,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036640095] [2025-03-14 01:02:01,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036640095] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:01,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:01,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 01:02:01,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972908039] [2025-03-14 01:02:01,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:01,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:02:01,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:01,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:02:01,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:02:01,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:01,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 174 transitions, 1848 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-03-14 01:02:01,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:01,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:01,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:03,847 INFO L124 PetriNetUnfolderBase]: 17629/25029 cut-off events. [2025-03-14 01:02:03,847 INFO L125 PetriNetUnfolderBase]: For 75811/75811 co-relation queries the response was YES. [2025-03-14 01:02:04,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83672 conditions, 25029 events. 17629/25029 cut-off events. For 75811/75811 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 146599 event pairs, 11006 based on Foata normal form. 470/24559 useless extension candidates. Maximal degree in co-relation 83560. Up to 20138 conditions per place. [2025-03-14 01:02:04,081 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 212 selfloop transitions, 8 changer transitions 1/222 dead transitions. [2025-03-14 01:02:04,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 222 transitions, 2643 flow [2025-03-14 01:02:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:02:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:02:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2025-03-14 01:02:04,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-03-14 01:02:04,082 INFO L175 Difference]: Start difference. First operand has 90 places, 174 transitions, 1848 flow. Second operand 3 states and 78 transitions. [2025-03-14 01:02:04,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 222 transitions, 2643 flow [2025-03-14 01:02:04,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 222 transitions, 2629 flow, removed 7 selfloop flow, removed 0 redundant places. [2025-03-14 01:02:04,415 INFO L231 Difference]: Finished difference. Result has 93 places, 175 transitions, 1864 flow [2025-03-14 01:02:04,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1864, PETRI_PLACES=93, PETRI_TRANSITIONS=175} [2025-03-14 01:02:04,416 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2025-03-14 01:02:04,416 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 175 transitions, 1864 flow [2025-03-14 01:02:04,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-03-14 01:02:04,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:04,416 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:04,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-14 01:02:04,417 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:04,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1723647694, now seen corresponding path program 1 times [2025-03-14 01:02:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079220432] [2025-03-14 01:02:04,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:04,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-14 01:02:04,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:02:04,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:04,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:04,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:04,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079220432] [2025-03-14 01:02:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079220432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:04,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:04,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:04,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927353486] [2025-03-14 01:02:04,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:04,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:04,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:04,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:04,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:04,527 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:04,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 175 transitions, 1864 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) [2025-03-14 01:02:04,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:04,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:04,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:07,347 INFO L124 PetriNetUnfolderBase]: 18573/26442 cut-off events. [2025-03-14 01:02:07,348 INFO L125 PetriNetUnfolderBase]: For 80935/80935 co-relation queries the response was YES. [2025-03-14 01:02:07,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90046 conditions, 26442 events. 18573/26442 cut-off events. For 80935/80935 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 156575 event pairs, 7157 based on Foata normal form. 4/26446 useless extension candidates. Maximal degree in co-relation 89932. Up to 19820 conditions per place. [2025-03-14 01:02:07,614 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 178 selfloop transitions, 13 changer transitions 60/252 dead transitions. [2025-03-14 01:02:07,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 252 transitions, 2994 flow [2025-03-14 01:02:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2025-03-14 01:02:07,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2025-03-14 01:02:07,615 INFO L175 Difference]: Start difference. First operand has 93 places, 175 transitions, 1864 flow. Second operand 4 states and 103 transitions. [2025-03-14 01:02:07,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 252 transitions, 2994 flow [2025-03-14 01:02:07,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 252 transitions, 2977 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-14 01:02:07,988 INFO L231 Difference]: Finished difference. Result has 98 places, 159 transitions, 1719 flow [2025-03-14 01:02:07,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1719, PETRI_PLACES=98, PETRI_TRANSITIONS=159} [2025-03-14 01:02:07,988 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2025-03-14 01:02:07,988 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 159 transitions, 1719 flow [2025-03-14 01:02:07,988 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) [2025-03-14 01:02:07,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:07,989 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:07,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-14 01:02:07,989 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:07,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash -584356674, now seen corresponding path program 1 times [2025-03-14 01:02:07,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:07,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125146513] [2025-03-14 01:02:07,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:07,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:08,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-14 01:02:08,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:02:08,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:08,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:08,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:08,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125146513] [2025-03-14 01:02:08,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125146513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:08,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:08,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:08,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033506299] [2025-03-14 01:02:08,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:08,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:08,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:08,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:08,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:08,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:08,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 159 transitions, 1719 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) [2025-03-14 01:02:08,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:08,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:08,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:11,228 INFO L124 PetriNetUnfolderBase]: 16727/23891 cut-off events. [2025-03-14 01:02:11,228 INFO L125 PetriNetUnfolderBase]: For 72770/72770 co-relation queries the response was YES. [2025-03-14 01:02:11,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80341 conditions, 23891 events. 16727/23891 cut-off events. For 72770/72770 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 139335 event pairs, 9982 based on Foata normal form. 5/23896 useless extension candidates. Maximal degree in co-relation 80233. Up to 16845 conditions per place. [2025-03-14 01:02:11,357 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 157 selfloop transitions, 6 changer transitions 49/213 dead transitions. [2025-03-14 01:02:11,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 213 transitions, 2468 flow [2025-03-14 01:02:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-03-14 01:02:11,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2025-03-14 01:02:11,360 INFO L175 Difference]: Start difference. First operand has 98 places, 159 transitions, 1719 flow. Second operand 4 states and 102 transitions. [2025-03-14 01:02:11,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 213 transitions, 2468 flow [2025-03-14 01:02:11,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 213 transitions, 2426 flow, removed 14 selfloop flow, removed 2 redundant places. [2025-03-14 01:02:11,591 INFO L231 Difference]: Finished difference. Result has 100 places, 139 transitions, 1392 flow [2025-03-14 01:02:11,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1392, PETRI_PLACES=100, PETRI_TRANSITIONS=139} [2025-03-14 01:02:11,593 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2025-03-14 01:02:11,593 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 139 transitions, 1392 flow [2025-03-14 01:02:11,593 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) [2025-03-14 01:02:11,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:11,593 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:11,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-14 01:02:11,593 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:11,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:11,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1856231768, now seen corresponding path program 2 times [2025-03-14 01:02:11,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:11,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903463410] [2025-03-14 01:02:11,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:11,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:11,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-14 01:02:11,612 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-03-14 01:02:11,613 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:11,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:11,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:11,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903463410] [2025-03-14 01:02:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903463410] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:11,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:11,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557168081] [2025-03-14 01:02:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:11,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:11,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:11,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:11,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:11,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 139 transitions, 1392 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) [2025-03-14 01:02:11,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:11,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:11,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:13,827 INFO L124 PetriNetUnfolderBase]: 14514/20635 cut-off events. [2025-03-14 01:02:13,828 INFO L125 PetriNetUnfolderBase]: For 55196/55196 co-relation queries the response was YES. [2025-03-14 01:02:13,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67936 conditions, 20635 events. 14514/20635 cut-off events. For 55196/55196 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 115932 event pairs, 9229 based on Foata normal form. 4/20639 useless extension candidates. Maximal degree in co-relation 67902. Up to 16845 conditions per place. [2025-03-14 01:02:13,990 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 126 selfloop transitions, 5 changer transitions 48/180 dead transitions. [2025-03-14 01:02:13,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 180 transitions, 1913 flow [2025-03-14 01:02:13,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:13,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-03-14 01:02:13,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-14 01:02:13,991 INFO L175 Difference]: Start difference. First operand has 100 places, 139 transitions, 1392 flow. Second operand 4 states and 98 transitions. [2025-03-14 01:02:13,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 180 transitions, 1913 flow [2025-03-14 01:02:14,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 180 transitions, 1841 flow, removed 19 selfloop flow, removed 4 redundant places. [2025-03-14 01:02:14,181 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 998 flow [2025-03-14 01:02:14,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=998, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2025-03-14 01:02:14,182 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2025-03-14 01:02:14,182 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 998 flow [2025-03-14 01:02:14,182 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) [2025-03-14 01:02:14,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:14,182 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:14,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-14 01:02:14,183 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:14,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash -502637464, now seen corresponding path program 2 times [2025-03-14 01:02:14,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:14,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000798224] [2025-03-14 01:02:14,183 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:14,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:14,198 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-14 01:02:14,202 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-03-14 01:02:14,202 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:14,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:14,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:14,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000798224] [2025-03-14 01:02:14,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000798224] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:14,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:14,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:14,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284854734] [2025-03-14 01:02:14,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:14,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:14,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:14,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:14,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:14,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 998 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) [2025-03-14 01:02:14,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:14,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:14,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:16,131 INFO L124 PetriNetUnfolderBase]: 12737/17999 cut-off events. [2025-03-14 01:02:16,132 INFO L125 PetriNetUnfolderBase]: For 41298/41298 co-relation queries the response was YES. [2025-03-14 01:02:16,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57612 conditions, 17999 events. 12737/17999 cut-off events. For 41298/41298 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 96840 event pairs, 5661 based on Foata normal form. 2/18001 useless extension candidates. Maximal degree in co-relation 57579. Up to 16115 conditions per place. [2025-03-14 01:02:16,255 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 115 selfloop transitions, 12 changer transitions 37/165 dead transitions. [2025-03-14 01:02:16,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 165 transitions, 1657 flow [2025-03-14 01:02:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-03-14 01:02:16,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204 [2025-03-14 01:02:16,256 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 998 flow. Second operand 4 states and 95 transitions. [2025-03-14 01:02:16,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 165 transitions, 1657 flow [2025-03-14 01:02:16,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 165 transitions, 1584 flow, removed 20 selfloop flow, removed 7 redundant places. [2025-03-14 01:02:16,435 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 921 flow [2025-03-14 01:02:16,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=921, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2025-03-14 01:02:16,435 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2025-03-14 01:02:16,435 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 921 flow [2025-03-14 01:02:16,435 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) [2025-03-14 01:02:16,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:16,435 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:16,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-14 01:02:16,436 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:16,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:16,436 INFO L85 PathProgramCache]: Analyzing trace with hash -199390763, now seen corresponding path program 1 times [2025-03-14 01:02:16,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:16,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059062541] [2025-03-14 01:02:16,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:16,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:16,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-14 01:02:16,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:02:16,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:16,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-14 01:02:17,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059062541] [2025-03-14 01:02:17,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059062541] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:17,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:17,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:17,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182753223] [2025-03-14 01:02:17,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:17,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:02:17,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:17,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:02:17,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-14 01:02:17,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:17,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 921 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2025-03-14 01:02:17,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:17,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:17,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:18,883 INFO L124 PetriNetUnfolderBase]: 12403/17508 cut-off events. [2025-03-14 01:02:18,883 INFO L125 PetriNetUnfolderBase]: For 31501/31501 co-relation queries the response was YES. [2025-03-14 01:02:19,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53463 conditions, 17508 events. 12403/17508 cut-off events. For 31501/31501 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 93599 event pairs, 5485 based on Foata normal form. 36/17544 useless extension candidates. Maximal degree in co-relation 53435. Up to 13102 conditions per place. [2025-03-14 01:02:19,065 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 135 selfloop transitions, 24 changer transitions 16/176 dead transitions. [2025-03-14 01:02:19,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 176 transitions, 1550 flow [2025-03-14 01:02:19,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:02:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:02:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2025-03-14 01:02:19,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4013605442176871 [2025-03-14 01:02:19,067 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 921 flow. Second operand 6 states and 118 transitions. [2025-03-14 01:02:19,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 176 transitions, 1550 flow [2025-03-14 01:02:19,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 176 transitions, 1392 flow, removed 24 selfloop flow, removed 10 redundant places. [2025-03-14 01:02:19,185 INFO L231 Difference]: Finished difference. Result has 78 places, 108 transitions, 822 flow [2025-03-14 01:02:19,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=822, PETRI_PLACES=78, PETRI_TRANSITIONS=108} [2025-03-14 01:02:19,186 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2025-03-14 01:02:19,186 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 108 transitions, 822 flow [2025-03-14 01:02:19,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2025-03-14 01:02:19,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:19,186 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:19,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-14 01:02:19,186 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:19,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:19,187 INFO L85 PathProgramCache]: Analyzing trace with hash -150015777, now seen corresponding path program 2 times [2025-03-14 01:02:19,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:19,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595903446] [2025-03-14 01:02:19,187 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:19,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:19,210 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-14 01:02:19,222 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 44 statements. [2025-03-14 01:02:19,222 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:19,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-14 01:02:19,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:19,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595903446] [2025-03-14 01:02:19,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595903446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:19,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:19,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:19,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271247382] [2025-03-14 01:02:19,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:19,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:19,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:19,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:19,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:19,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:19,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 108 transitions, 822 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:19,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:19,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:19,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:21,524 INFO L124 PetriNetUnfolderBase]: 13174/18697 cut-off events. [2025-03-14 01:02:21,524 INFO L125 PetriNetUnfolderBase]: For 22950/22950 co-relation queries the response was YES. [2025-03-14 01:02:21,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53300 conditions, 18697 events. 13174/18697 cut-off events. For 22950/22950 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 102625 event pairs, 5517 based on Foata normal form. 35/18732 useless extension candidates. Maximal degree in co-relation 53278. Up to 14608 conditions per place. [2025-03-14 01:02:21,727 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 140 selfloop transitions, 21 changer transitions 14/176 dead transitions. [2025-03-14 01:02:21,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 176 transitions, 1454 flow [2025-03-14 01:02:21,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2025-03-14 01:02:21,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2025-03-14 01:02:21,728 INFO L175 Difference]: Start difference. First operand has 78 places, 108 transitions, 822 flow. Second operand 5 states and 112 transitions. [2025-03-14 01:02:21,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 176 transitions, 1454 flow [2025-03-14 01:02:21,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 176 transitions, 1428 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-14 01:02:21,757 INFO L231 Difference]: Finished difference. Result has 80 places, 108 transitions, 847 flow [2025-03-14 01:02:21,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=847, PETRI_PLACES=80, PETRI_TRANSITIONS=108} [2025-03-14 01:02:21,759 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2025-03-14 01:02:21,759 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 108 transitions, 847 flow [2025-03-14 01:02:21,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:21,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:21,759 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:21,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-14 01:02:21,759 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:21,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:21,760 INFO L85 PathProgramCache]: Analyzing trace with hash 845207989, now seen corresponding path program 3 times [2025-03-14 01:02:21,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:21,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179063716] [2025-03-14 01:02:21,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:02:21,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:21,774 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 4 equivalence classes. [2025-03-14 01:02:21,791 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 27 of 44 statements. [2025-03-14 01:02:21,792 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:02:21,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-14 01:02:21,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:21,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179063716] [2025-03-14 01:02:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179063716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:21,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:21,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370061749] [2025-03-14 01:02:21,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:21,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:21,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:21,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:21,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:21,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 108 transitions, 847 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:21,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:21,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:21,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:23,942 INFO L124 PetriNetUnfolderBase]: 14105/20159 cut-off events. [2025-03-14 01:02:23,943 INFO L125 PetriNetUnfolderBase]: For 27128/27128 co-relation queries the response was YES. [2025-03-14 01:02:24,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57612 conditions, 20159 events. 14105/20159 cut-off events. For 27128/27128 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 114151 event pairs, 8843 based on Foata normal form. 36/20195 useless extension candidates. Maximal degree in co-relation 57589. Up to 16107 conditions per place. [2025-03-14 01:02:24,135 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 137 selfloop transitions, 11 changer transitions 17/166 dead transitions. [2025-03-14 01:02:24,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 166 transitions, 1377 flow [2025-03-14 01:02:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-03-14 01:02:24,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2025-03-14 01:02:24,137 INFO L175 Difference]: Start difference. First operand has 80 places, 108 transitions, 847 flow. Second operand 5 states and 116 transitions. [2025-03-14 01:02:24,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 166 transitions, 1377 flow [2025-03-14 01:02:24,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 166 transitions, 1351 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-14 01:02:24,177 INFO L231 Difference]: Finished difference. Result has 83 places, 107 transitions, 840 flow [2025-03-14 01:02:24,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=83, PETRI_TRANSITIONS=107} [2025-03-14 01:02:24,177 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2025-03-14 01:02:24,177 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 107 transitions, 840 flow [2025-03-14 01:02:24,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:24,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:24,178 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:24,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-14 01:02:24,178 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:24,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:24,178 INFO L85 PathProgramCache]: Analyzing trace with hash 511355135, now seen corresponding path program 4 times [2025-03-14 01:02:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:24,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502661025] [2025-03-14 01:02:24,179 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:02:24,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:24,192 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-14 01:02:24,200 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:02:24,200 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:02:24,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-14 01:02:24,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:24,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502661025] [2025-03-14 01:02:24,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502661025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:24,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:24,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260535828] [2025-03-14 01:02:24,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:24,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:24,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:24,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:24,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:24,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:24,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 107 transitions, 840 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:24,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:24,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:24,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:27,241 INFO L124 PetriNetUnfolderBase]: 18750/26611 cut-off events. [2025-03-14 01:02:27,241 INFO L125 PetriNetUnfolderBase]: For 35212/35212 co-relation queries the response was YES. [2025-03-14 01:02:27,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76632 conditions, 26611 events. 18750/26611 cut-off events. For 35212/35212 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 154979 event pairs, 6788 based on Foata normal form. 1/26612 useless extension candidates. Maximal degree in co-relation 76608. Up to 12121 conditions per place. [2025-03-14 01:02:27,415 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 151 selfloop transitions, 40 changer transitions 4/196 dead transitions. [2025-03-14 01:02:27,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 196 transitions, 1667 flow [2025-03-14 01:02:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-03-14 01:02:27,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-03-14 01:02:27,417 INFO L175 Difference]: Start difference. First operand has 83 places, 107 transitions, 840 flow. Second operand 5 states and 131 transitions. [2025-03-14 01:02:27,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 196 transitions, 1667 flow [2025-03-14 01:02:27,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 196 transitions, 1640 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-03-14 01:02:27,466 INFO L231 Difference]: Finished difference. Result has 87 places, 129 transitions, 1198 flow [2025-03-14 01:02:27,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1198, PETRI_PLACES=87, PETRI_TRANSITIONS=129} [2025-03-14 01:02:27,467 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2025-03-14 01:02:27,467 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 129 transitions, 1198 flow [2025-03-14 01:02:27,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:27,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:27,467 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:27,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-14 01:02:27,467 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:27,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash 564788537, now seen corresponding path program 5 times [2025-03-14 01:02:27,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:27,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660269038] [2025-03-14 01:02:27,467 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:02:27,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:27,482 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 4 equivalence classes. [2025-03-14 01:02:27,540 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:02:27,540 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-14 01:02:27,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-14 01:02:27,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660269038] [2025-03-14 01:02:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660269038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:27,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:27,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175086473] [2025-03-14 01:02:27,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:27,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:27,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:27,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:27,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:27,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:27,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 129 transitions, 1198 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:27,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:27,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:27,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:31,241 INFO L124 PetriNetUnfolderBase]: 18720/26545 cut-off events. [2025-03-14 01:02:31,242 INFO L125 PetriNetUnfolderBase]: For 50832/50832 co-relation queries the response was YES. [2025-03-14 01:02:31,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81504 conditions, 26545 events. 18720/26545 cut-off events. For 50832/50832 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 155578 event pairs, 11783 based on Foata normal form. 1/26546 useless extension candidates. Maximal degree in co-relation 81479. Up to 21692 conditions per place. [2025-03-14 01:02:31,443 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 160 selfloop transitions, 12 changer transitions 5/178 dead transitions. [2025-03-14 01:02:31,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 178 transitions, 1755 flow [2025-03-14 01:02:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-03-14 01:02:31,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44081632653061226 [2025-03-14 01:02:31,446 INFO L175 Difference]: Start difference. First operand has 87 places, 129 transitions, 1198 flow. Second operand 5 states and 108 transitions. [2025-03-14 01:02:31,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 178 transitions, 1755 flow [2025-03-14 01:02:31,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 178 transitions, 1719 flow, removed 16 selfloop flow, removed 2 redundant places. [2025-03-14 01:02:31,543 INFO L231 Difference]: Finished difference. Result has 91 places, 131 transitions, 1219 flow [2025-03-14 01:02:31,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1219, PETRI_PLACES=91, PETRI_TRANSITIONS=131} [2025-03-14 01:02:31,543 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2025-03-14 01:02:31,543 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 131 transitions, 1219 flow [2025-03-14 01:02:31,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:31,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:31,544 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:31,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-14 01:02:31,544 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:31,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1598008065, now seen corresponding path program 6 times [2025-03-14 01:02:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751714953] [2025-03-14 01:02:31,545 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:02:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:31,564 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 4 equivalence classes. [2025-03-14 01:02:31,578 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 27 of 44 statements. [2025-03-14 01:02:31,578 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:02:31,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-14 01:02:31,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:31,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751714953] [2025-03-14 01:02:31,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751714953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:31,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:31,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:31,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209442216] [2025-03-14 01:02:31,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:31,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:31,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:31,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:31,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:31,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:31,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 131 transitions, 1219 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:31,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:31,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:31,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:35,322 INFO L124 PetriNetUnfolderBase]: 18587/26323 cut-off events. [2025-03-14 01:02:35,323 INFO L125 PetriNetUnfolderBase]: For 50110/50110 co-relation queries the response was YES. [2025-03-14 01:02:35,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81186 conditions, 26323 events. 18587/26323 cut-off events. For 50110/50110 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 152523 event pairs, 7430 based on Foata normal form. 1/26324 useless extension candidates. Maximal degree in co-relation 81160. Up to 12898 conditions per place. [2025-03-14 01:02:35,588 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 148 selfloop transitions, 35 changer transitions 5/189 dead transitions. [2025-03-14 01:02:35,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 189 transitions, 1808 flow [2025-03-14 01:02:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2025-03-14 01:02:35,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2025-03-14 01:02:35,589 INFO L175 Difference]: Start difference. First operand has 91 places, 131 transitions, 1219 flow. Second operand 5 states and 122 transitions. [2025-03-14 01:02:35,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 189 transitions, 1808 flow [2025-03-14 01:02:35,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 189 transitions, 1793 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-14 01:02:35,763 INFO L231 Difference]: Finished difference. Result has 96 places, 132 transitions, 1321 flow [2025-03-14 01:02:35,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1321, PETRI_PLACES=96, PETRI_TRANSITIONS=132} [2025-03-14 01:02:35,763 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2025-03-14 01:02:35,763 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 132 transitions, 1321 flow [2025-03-14 01:02:35,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-14 01:02:35,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:35,764 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:35,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-14 01:02:35,764 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:35,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash -318124724, now seen corresponding path program 1 times [2025-03-14 01:02:35,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:35,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236781902] [2025-03-14 01:02:35,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:35,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:35,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-14 01:02:35,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-14 01:02:35,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:35,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-14 01:02:35,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:35,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236781902] [2025-03-14 01:02:35,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236781902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:35,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:35,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:35,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761422964] [2025-03-14 01:02:35,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:35,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:35,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:35,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:35,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:35,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 132 transitions, 1321 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:35,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:35,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:35,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:39,634 INFO L124 PetriNetUnfolderBase]: 20005/28333 cut-off events. [2025-03-14 01:02:39,635 INFO L125 PetriNetUnfolderBase]: For 63181/63181 co-relation queries the response was YES. [2025-03-14 01:02:39,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90003 conditions, 28333 events. 20005/28333 cut-off events. For 63181/63181 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 166087 event pairs, 5335 based on Foata normal form. 137/28470 useless extension candidates. Maximal degree in co-relation 89975. Up to 22909 conditions per place. [2025-03-14 01:02:39,834 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 159 selfloop transitions, 17 changer transitions 1/178 dead transitions. [2025-03-14 01:02:39,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 1884 flow [2025-03-14 01:02:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-03-14 01:02:39,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2025-03-14 01:02:39,835 INFO L175 Difference]: Start difference. First operand has 96 places, 132 transitions, 1321 flow. Second operand 4 states and 99 transitions. [2025-03-14 01:02:39,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 1884 flow [2025-03-14 01:02:39,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 178 transitions, 1834 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-14 01:02:39,975 INFO L231 Difference]: Finished difference. Result has 98 places, 136 transitions, 1379 flow [2025-03-14 01:02:39,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1379, PETRI_PLACES=98, PETRI_TRANSITIONS=136} [2025-03-14 01:02:39,975 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2025-03-14 01:02:39,976 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 136 transitions, 1379 flow [2025-03-14 01:02:39,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:39,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:39,977 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:39,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-14 01:02:39,977 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:39,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -61776812, now seen corresponding path program 1 times [2025-03-14 01:02:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:39,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004084251] [2025-03-14 01:02:39,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:39,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-14 01:02:40,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-14 01:02:40,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:40,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-14 01:02:40,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:40,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004084251] [2025-03-14 01:02:40,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004084251] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:40,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:40,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724226448] [2025-03-14 01:02:40,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:40,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:40,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:40,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:40,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:40,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:40,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 136 transitions, 1379 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:40,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:40,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:40,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:44,469 INFO L124 PetriNetUnfolderBase]: 20135/28528 cut-off events. [2025-03-14 01:02:44,469 INFO L125 PetriNetUnfolderBase]: For 66952/66952 co-relation queries the response was YES. [2025-03-14 01:02:44,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89822 conditions, 28528 events. 20135/28528 cut-off events. For 66952/66952 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 168361 event pairs, 5665 based on Foata normal form. 136/28664 useless extension candidates. Maximal degree in co-relation 89793. Up to 22368 conditions per place. [2025-03-14 01:02:44,641 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 160 selfloop transitions, 16 changer transitions 0/177 dead transitions. [2025-03-14 01:02:44,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 177 transitions, 1892 flow [2025-03-14 01:02:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-03-14 01:02:44,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-14 01:02:44,643 INFO L175 Difference]: Start difference. First operand has 98 places, 136 transitions, 1379 flow. Second operand 4 states and 98 transitions. [2025-03-14 01:02:44,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 177 transitions, 1892 flow [2025-03-14 01:02:44,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 177 transitions, 1880 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:02:44,760 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1420 flow [2025-03-14 01:02:44,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1420, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2025-03-14 01:02:44,761 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2025-03-14 01:02:44,761 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1420 flow [2025-03-14 01:02:44,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:44,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:44,762 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:44,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-14 01:02:44,762 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:44,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash -69689178, now seen corresponding path program 2 times [2025-03-14 01:02:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96156084] [2025-03-14 01:02:44,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:44,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:44,778 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-03-14 01:02:44,781 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 47 statements. [2025-03-14 01:02:44,781 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:44,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-14 01:02:44,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:44,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96156084] [2025-03-14 01:02:44,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96156084] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:44,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:44,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:44,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488246899] [2025-03-14 01:02:44,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:44,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:44,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:44,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:44,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:44,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:44,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1420 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:44,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:44,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:44,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:48,570 INFO L124 PetriNetUnfolderBase]: 19944/28272 cut-off events. [2025-03-14 01:02:48,570 INFO L125 PetriNetUnfolderBase]: For 71050/71050 co-relation queries the response was YES. [2025-03-14 01:02:48,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89812 conditions, 28272 events. 19944/28272 cut-off events. For 71050/71050 co-relation queries the response was YES. Maximal size of possible extension queue 879. Compared 166431 event pairs, 6205 based on Foata normal form. 32/28304 useless extension candidates. Maximal degree in co-relation 89781. Up to 25509 conditions per place. [2025-03-14 01:02:48,770 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 152 selfloop transitions, 10 changer transitions 7/170 dead transitions. [2025-03-14 01:02:48,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 170 transitions, 1847 flow [2025-03-14 01:02:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:48,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-03-14 01:02:48,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2025-03-14 01:02:48,772 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1420 flow. Second operand 4 states and 94 transitions. [2025-03-14 01:02:48,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 170 transitions, 1847 flow [2025-03-14 01:02:48,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 170 transitions, 1827 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-03-14 01:02:48,923 INFO L231 Difference]: Finished difference. Result has 106 places, 131 transitions, 1385 flow [2025-03-14 01:02:48,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1385, PETRI_PLACES=106, PETRI_TRANSITIONS=131} [2025-03-14 01:02:48,923 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2025-03-14 01:02:48,923 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 131 transitions, 1385 flow [2025-03-14 01:02:48,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:48,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:48,924 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:48,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-14 01:02:48,924 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:02:48,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:48,924 INFO L85 PathProgramCache]: Analyzing trace with hash 322320232, now seen corresponding path program 2 times [2025-03-14 01:02:48,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:48,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934563981] [2025-03-14 01:02:48,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:48,943 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-03-14 01:02:48,948 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 47 statements. [2025-03-14 01:02:48,948 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:48,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-14 01:02:49,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934563981] [2025-03-14 01:02:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934563981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:49,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168603877] [2025-03-14 01:02:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:49,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:49,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:49,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:49,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:49,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 131 transitions, 1385 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:49,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:49,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:49,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand