./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:14:22,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:14:22,856 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:14:22,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:14:22,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:14:22,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:14:22,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:14:22,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:14:22,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:14:22,884 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:14:22,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:14:22,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:14:22,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:14:22,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:14:22,885 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:14:22,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:14:22,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:14:22,886 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:14:22,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:14:22,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:14:22,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:14:22,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:14:22,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:14:22,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:14:22,886 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:14:22,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:14:22,887 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:14:22,887 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:14:22,887 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:14:22,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:14:22,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:14:22,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:14:22,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:14:22,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:14:22,888 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2025-02-08 01:14:23,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:14:23,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:14:23,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:14:23,123 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:14:23,123 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:14:23,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2025-02-08 01:14:24,350 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1e88c5a41/a518c5149743421ba11c14f566e92a84/FLAGd78455552 [2025-02-08 01:14:24,549 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:14:24,558 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2025-02-08 01:14:24,592 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1e88c5a41/a518c5149743421ba11c14f566e92a84/FLAGd78455552 [2025-02-08 01:14:24,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1e88c5a41/a518c5149743421ba11c14f566e92a84 [2025-02-08 01:14:24,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:14:24,913 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:14:24,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:14:24,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:14:24,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:14:24,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:14:24" (1/1) ... [2025-02-08 01:14:24,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9df4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:24, skipping insertion in model container [2025-02-08 01:14:24,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:14:24" (1/1) ... [2025-02-08 01:14:24,928 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:14:25,056 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2025-02-08 01:14:25,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:14:25,073 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:14:25,102 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2025-02-08 01:14:25,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:14:25,116 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:14:25,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25 WrapperNode [2025-02-08 01:14:25,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:14:25,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:14:25,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:14:25,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:14:25,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,150 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 156 [2025-02-08 01:14:25,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:14:25,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:14:25,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:14:25,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:14:25,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,184 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 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]. [2025-02-08 01:14:25,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,191 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:14:25,202 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:14:25,202 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:14:25,202 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:14:25,203 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (1/1) ... [2025-02-08 01:14:25,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:14:25,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:25,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:14:25,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:14:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:14:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:14:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:14:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:14:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:14:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:14:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:14:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:14:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:14:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:14:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:14:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:14:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:14:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:14:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:14:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:14:25,258 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:14:25,346 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:14:25,347 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:14:25,600 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:14:25,600 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:14:25,797 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:14:25,797 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:14:25,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:14:25 BoogieIcfgContainer [2025-02-08 01:14:25,797 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:14:25,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:14:25,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:14:25,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:14:25,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:14:24" (1/3) ... [2025-02-08 01:14:25,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dbd634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:14:25, skipping insertion in model container [2025-02-08 01:14:25,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:25" (2/3) ... [2025-02-08 01:14:25,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dbd634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:14:25, skipping insertion in model container [2025-02-08 01:14:25,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:14:25" (3/3) ... [2025-02-08 01:14:25,805 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2025-02-08 01:14:25,816 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:14:25,817 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-trans.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-08 01:14:25,817 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:14:25,857 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 01:14:25,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2025-02-08 01:14:25,917 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2025-02-08 01:14:25,920 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:14:25,922 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 75 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. [2025-02-08 01:14:25,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2025-02-08 01:14:25,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2025-02-08 01:14:25,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:14:25,946 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;@1fc4c67a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:14:25,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:14:25,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:14:25,964 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2025-02-08 01:14:25,964 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:14:25,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:25,965 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:25,966 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)] === [2025-02-08 01:14:25,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:25,971 INFO L85 PathProgramCache]: Analyzing trace with hash 761978675, now seen corresponding path program 1 times [2025-02-08 01:14:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:25,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588939498] [2025-02-08 01:14:25,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:26,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:14:26,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:14:26,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:26,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588939498] [2025-02-08 01:14:26,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588939498] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:26,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:26,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151378495] [2025-02-08 01:14:26,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:26,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:26,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:26,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:26,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:26,705 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:26,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:26,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:26,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:26,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:27,287 INFO L124 PetriNetUnfolderBase]: 3088/4276 cut-off events. [2025-02-08 01:14:27,287 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2025-02-08 01:14:27,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8623 conditions, 4276 events. 3088/4276 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18016 event pairs, 1442 based on Foata normal form. 1/3483 useless extension candidates. Maximal degree in co-relation 8003. Up to 3042 conditions per place. [2025-02-08 01:14:27,311 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 79 selfloop transitions, 5 changer transitions 5/93 dead transitions. [2025-02-08 01:14:27,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 93 transitions, 409 flow [2025-02-08 01:14:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:27,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-02-08 01:14:27,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2025-02-08 01:14:27,322 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 5 states and 125 transitions. [2025-02-08 01:14:27,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 93 transitions, 409 flow [2025-02-08 01:14:27,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 93 transitions, 379 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 01:14:27,330 INFO L231 Difference]: Finished difference. Result has 44 places, 49 transitions, 135 flow [2025-02-08 01:14:27,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=49} [2025-02-08 01:14:27,334 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2025-02-08 01:14:27,334 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 49 transitions, 135 flow [2025-02-08 01:14:27,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:27,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:27,335 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:27,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:14:27,335 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)] === [2025-02-08 01:14:27,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1202530615, now seen corresponding path program 2 times [2025-02-08 01:14:27,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:27,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38072202] [2025-02-08 01:14:27,336 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:27,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:27,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:14:27,371 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:14:27,372 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:14:27,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:27,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38072202] [2025-02-08 01:14:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38072202] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:27,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:27,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:27,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170789981] [2025-02-08 01:14:27,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:27,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:27,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:27,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:27,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:27,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:27,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:27,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:27,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:27,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:28,421 INFO L124 PetriNetUnfolderBase]: 4118/5814 cut-off events. [2025-02-08 01:14:28,422 INFO L125 PetriNetUnfolderBase]: For 1221/1221 co-relation queries the response was YES. [2025-02-08 01:14:28,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12668 conditions, 5814 events. 4118/5814 cut-off events. For 1221/1221 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 28233 event pairs, 2027 based on Foata normal form. 1/5308 useless extension candidates. Maximal degree in co-relation 9395. Up to 3989 conditions per place. [2025-02-08 01:14:28,448 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 91 selfloop transitions, 6 changer transitions 3/104 dead transitions. [2025-02-08 01:14:28,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 104 transitions, 473 flow [2025-02-08 01:14:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-02-08 01:14:28,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-02-08 01:14:28,451 INFO L175 Difference]: Start difference. First operand has 44 places, 49 transitions, 135 flow. Second operand 5 states and 131 transitions. [2025-02-08 01:14:28,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 104 transitions, 473 flow [2025-02-08 01:14:28,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 104 transitions, 464 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:28,458 INFO L231 Difference]: Finished difference. Result has 50 places, 54 transitions, 185 flow [2025-02-08 01:14:28,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2025-02-08 01:14:28,459 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2025-02-08 01:14:28,459 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions, 185 flow [2025-02-08 01:14:28,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:28,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:28,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:28,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:14:28,460 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)] === [2025-02-08 01:14:28,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1574954519, now seen corresponding path program 3 times [2025-02-08 01:14:28,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:28,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724859626] [2025-02-08 01:14:28,461 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:28,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:28,473 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:14:28,486 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:14:28,489 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:14:28,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:28,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:28,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724859626] [2025-02-08 01:14:28,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724859626] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:28,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:28,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407912967] [2025-02-08 01:14:28,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:28,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:28,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:28,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:28,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:28,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:28,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:28,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:28,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:29,301 INFO L124 PetriNetUnfolderBase]: 5327/7645 cut-off events. [2025-02-08 01:14:29,301 INFO L125 PetriNetUnfolderBase]: For 3602/3602 co-relation queries the response was YES. [2025-02-08 01:14:29,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18037 conditions, 7645 events. 5327/7645 cut-off events. For 3602/3602 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 40525 event pairs, 2667 based on Foata normal form. 1/7424 useless extension candidates. Maximal degree in co-relation 12904. Up to 4835 conditions per place. [2025-02-08 01:14:29,332 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 90 selfloop transitions, 17 changer transitions 1/112 dead transitions. [2025-02-08 01:14:29,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 112 transitions, 575 flow [2025-02-08 01:14:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2025-02-08 01:14:29,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2025-02-08 01:14:29,336 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 185 flow. Second operand 5 states and 135 transitions. [2025-02-08 01:14:29,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 112 transitions, 575 flow [2025-02-08 01:14:29,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 112 transitions, 566 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:29,351 INFO L231 Difference]: Finished difference. Result has 56 places, 64 transitions, 312 flow [2025-02-08 01:14:29,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=56, PETRI_TRANSITIONS=64} [2025-02-08 01:14:29,352 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2025-02-08 01:14:29,352 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 64 transitions, 312 flow [2025-02-08 01:14:29,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:29,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:29,352 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:29,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:14:29,353 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)] === [2025-02-08 01:14:29,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash 337991435, now seen corresponding path program 4 times [2025-02-08 01:14:29,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:29,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078038943] [2025-02-08 01:14:29,354 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:29,364 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-02-08 01:14:29,370 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 21 of 24 statements. [2025-02-08 01:14:29,370 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:14:29,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:29,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:29,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078038943] [2025-02-08 01:14:29,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078038943] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:29,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:29,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:29,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224460471] [2025-02-08 01:14:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:29,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:29,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:29,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:29,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:29,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:29,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 64 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:29,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:29,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:29,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:30,292 INFO L124 PetriNetUnfolderBase]: 5938/8541 cut-off events. [2025-02-08 01:14:30,292 INFO L125 PetriNetUnfolderBase]: For 10563/10591 co-relation queries the response was YES. [2025-02-08 01:14:30,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23178 conditions, 8541 events. 5938/8541 cut-off events. For 10563/10591 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 46723 event pairs, 2855 based on Foata normal form. 1/8272 useless extension candidates. Maximal degree in co-relation 15671. Up to 5341 conditions per place. [2025-02-08 01:14:30,334 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 105 selfloop transitions, 19 changer transitions 2/130 dead transitions. [2025-02-08 01:14:30,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 815 flow [2025-02-08 01:14:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-02-08 01:14:30,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2025-02-08 01:14:30,335 INFO L175 Difference]: Start difference. First operand has 56 places, 64 transitions, 312 flow. Second operand 5 states and 137 transitions. [2025-02-08 01:14:30,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 815 flow [2025-02-08 01:14:30,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 130 transitions, 785 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:30,372 INFO L231 Difference]: Finished difference. Result has 62 places, 78 transitions, 490 flow [2025-02-08 01:14:30,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=62, PETRI_TRANSITIONS=78} [2025-02-08 01:14:30,373 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2025-02-08 01:14:30,373 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 78 transitions, 490 flow [2025-02-08 01:14:30,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:30,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:30,373 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:30,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:14:30,373 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)] === [2025-02-08 01:14:30,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1105849175, now seen corresponding path program 5 times [2025-02-08 01:14:30,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:30,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417578568] [2025-02-08 01:14:30,374 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:30,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:30,390 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:14:30,406 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:14:30,406 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:14:30,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:30,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:30,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417578568] [2025-02-08 01:14:30,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417578568] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:30,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:30,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417200045] [2025-02-08 01:14:30,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:30,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:30,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:30,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:30,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:30,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:30,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 78 transitions, 490 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:30,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:30,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:30,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:31,210 INFO L124 PetriNetUnfolderBase]: 5918/8489 cut-off events. [2025-02-08 01:14:31,211 INFO L125 PetriNetUnfolderBase]: For 17584/17638 co-relation queries the response was YES. [2025-02-08 01:14:31,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25769 conditions, 8489 events. 5918/8489 cut-off events. For 17584/17638 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 46013 event pairs, 3002 based on Foata normal form. 1/8442 useless extension candidates. Maximal degree in co-relation 21070. Up to 5564 conditions per place. [2025-02-08 01:14:31,250 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 111 selfloop transitions, 10 changer transitions 3/128 dead transitions. [2025-02-08 01:14:31,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 128 transitions, 946 flow [2025-02-08 01:14:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-02-08 01:14:31,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2025-02-08 01:14:31,252 INFO L175 Difference]: Start difference. First operand has 62 places, 78 transitions, 490 flow. Second operand 5 states and 129 transitions. [2025-02-08 01:14:31,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 128 transitions, 946 flow [2025-02-08 01:14:31,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 128 transitions, 897 flow, removed 23 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:31,294 INFO L231 Difference]: Finished difference. Result has 67 places, 78 transitions, 496 flow [2025-02-08 01:14:31,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=67, PETRI_TRANSITIONS=78} [2025-02-08 01:14:31,297 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2025-02-08 01:14:31,297 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 78 transitions, 496 flow [2025-02-08 01:14:31,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:31,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:31,297 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:31,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:14:31,298 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)] === [2025-02-08 01:14:31,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash 258362543, now seen corresponding path program 6 times [2025-02-08 01:14:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:31,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020493052] [2025-02-08 01:14:31,299 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:31,308 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:14:31,317 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:14:31,318 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:14:31,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:31,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:31,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020493052] [2025-02-08 01:14:31,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020493052] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:31,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:31,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:31,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076953144] [2025-02-08 01:14:31,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:31,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:31,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:31,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:31,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:31,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:31,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 78 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:31,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:31,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:31,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:32,199 INFO L124 PetriNetUnfolderBase]: 6258/8980 cut-off events. [2025-02-08 01:14:32,200 INFO L125 PetriNetUnfolderBase]: For 17797/17797 co-relation queries the response was YES. [2025-02-08 01:14:32,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27009 conditions, 8980 events. 6258/8980 cut-off events. For 17797/17797 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 49098 event pairs, 2120 based on Foata normal form. 1/8957 useless extension candidates. Maximal degree in co-relation 26537. Up to 4253 conditions per place. [2025-02-08 01:14:32,286 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 97 selfloop transitions, 35 changer transitions 2/138 dead transitions. [2025-02-08 01:14:32,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 138 transitions, 1020 flow [2025-02-08 01:14:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-02-08 01:14:32,288 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2025-02-08 01:14:32,288 INFO L175 Difference]: Start difference. First operand has 67 places, 78 transitions, 496 flow. Second operand 5 states and 134 transitions. [2025-02-08 01:14:32,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 138 transitions, 1020 flow [2025-02-08 01:14:32,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 991 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-02-08 01:14:32,330 INFO L231 Difference]: Finished difference. Result has 71 places, 90 transitions, 698 flow [2025-02-08 01:14:32,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=698, PETRI_PLACES=71, PETRI_TRANSITIONS=90} [2025-02-08 01:14:32,331 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2025-02-08 01:14:32,331 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 90 transitions, 698 flow [2025-02-08 01:14:32,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:32,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:32,331 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] [2025-02-08 01:14:32,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:14:32,331 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)] === [2025-02-08 01:14:32,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash 912577830, now seen corresponding path program 1 times [2025-02-08 01:14:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:32,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665927088] [2025-02-08 01:14:32,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:32,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:14:32,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:14:32,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:32,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:32,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:32,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665927088] [2025-02-08 01:14:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665927088] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825943735] [2025-02-08 01:14:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:32,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:14:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:32,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:14:32,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:14:32,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:32,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 90 transitions, 698 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:32,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:32,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:32,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:33,202 INFO L124 PetriNetUnfolderBase]: 10072/14138 cut-off events. [2025-02-08 01:14:33,203 INFO L125 PetriNetUnfolderBase]: For 40270/40332 co-relation queries the response was YES. [2025-02-08 01:14:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47708 conditions, 14138 events. 10072/14138 cut-off events. For 40270/40332 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 79017 event pairs, 3356 based on Foata normal form. 5/14095 useless extension candidates. Maximal degree in co-relation 41241. Up to 6106 conditions per place. [2025-02-08 01:14:33,277 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 141 selfloop transitions, 23 changer transitions 7/175 dead transitions. [2025-02-08 01:14:33,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 175 transitions, 1581 flow [2025-02-08 01:14:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:14:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:14:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2025-02-08 01:14:33,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2025-02-08 01:14:33,281 INFO L175 Difference]: Start difference. First operand has 71 places, 90 transitions, 698 flow. Second operand 6 states and 145 transitions. [2025-02-08 01:14:33,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 175 transitions, 1581 flow [2025-02-08 01:14:33,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 175 transitions, 1547 flow, removed 17 selfloop flow, removed 0 redundant places. [2025-02-08 01:14:33,360 INFO L231 Difference]: Finished difference. Result has 80 places, 102 transitions, 857 flow [2025-02-08 01:14:33,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=857, PETRI_PLACES=80, PETRI_TRANSITIONS=102} [2025-02-08 01:14:33,362 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2025-02-08 01:14:33,362 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 102 transitions, 857 flow [2025-02-08 01:14:33,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:33,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:33,363 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] [2025-02-08 01:14:33,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:14:33,363 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)] === [2025-02-08 01:14:33,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:33,365 INFO L85 PathProgramCache]: Analyzing trace with hash 212977491, now seen corresponding path program 1 times [2025-02-08 01:14:33,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:33,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695521123] [2025-02-08 01:14:33,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:33,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:33,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:14:33,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:14:33,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:33,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:33,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:33,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695521123] [2025-02-08 01:14:33,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695521123] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:33,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:33,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218486471] [2025-02-08 01:14:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:33,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:14:33,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:33,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:14:33,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:14:33,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:33,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 102 transitions, 857 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:33,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:33,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:33,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:34,868 INFO L124 PetriNetUnfolderBase]: 14604/20289 cut-off events. [2025-02-08 01:14:34,868 INFO L125 PetriNetUnfolderBase]: For 67115/67159 co-relation queries the response was YES. [2025-02-08 01:14:35,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72040 conditions, 20289 events. 14604/20289 cut-off events. For 67115/67159 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 114676 event pairs, 4913 based on Foata normal form. 5/20262 useless extension candidates. Maximal degree in co-relation 65566. Up to 8011 conditions per place. [2025-02-08 01:14:35,159 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 168 selfloop transitions, 27 changer transitions 38/237 dead transitions. [2025-02-08 01:14:35,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 237 transitions, 2352 flow [2025-02-08 01:14:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:14:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:14:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2025-02-08 01:14:35,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2025-02-08 01:14:35,161 INFO L175 Difference]: Start difference. First operand has 80 places, 102 transitions, 857 flow. Second operand 7 states and 171 transitions. [2025-02-08 01:14:35,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 237 transitions, 2352 flow [2025-02-08 01:14:35,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 237 transitions, 2307 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:35,272 INFO L231 Difference]: Finished difference. Result has 90 places, 116 transitions, 1047 flow [2025-02-08 01:14:35,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1047, PETRI_PLACES=90, PETRI_TRANSITIONS=116} [2025-02-08 01:14:35,272 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2025-02-08 01:14:35,273 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 116 transitions, 1047 flow [2025-02-08 01:14:35,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:35,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:35,273 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] [2025-02-08 01:14:35,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 01:14:35,273 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)] === [2025-02-08 01:14:35,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:35,274 INFO L85 PathProgramCache]: Analyzing trace with hash 931434705, now seen corresponding path program 1 times [2025-02-08 01:14:35,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:35,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406722716] [2025-02-08 01:14:35,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:35,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:14:35,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:14:35,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:35,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:35,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:35,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406722716] [2025-02-08 01:14:35,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406722716] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:35,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:35,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:35,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121951641] [2025-02-08 01:14:35,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:35,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:35,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:35,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:35,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:35,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:35,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 116 transitions, 1047 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:35,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:35,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:35,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:36,583 INFO L124 PetriNetUnfolderBase]: 13483/18985 cut-off events. [2025-02-08 01:14:36,583 INFO L125 PetriNetUnfolderBase]: For 64025/64025 co-relation queries the response was YES. [2025-02-08 01:14:36,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69176 conditions, 18985 events. 13483/18985 cut-off events. For 64025/64025 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 107964 event pairs, 4069 based on Foata normal form. 1/18949 useless extension candidates. Maximal degree in co-relation 69088. Up to 8604 conditions per place. [2025-02-08 01:14:36,695 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 164 selfloop transitions, 23 changer transitions 9/200 dead transitions. [2025-02-08 01:14:36,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 200 transitions, 2047 flow [2025-02-08 01:14:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-08 01:14:36,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-02-08 01:14:36,697 INFO L175 Difference]: Start difference. First operand has 90 places, 116 transitions, 1047 flow. Second operand 5 states and 133 transitions. [2025-02-08 01:14:36,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 200 transitions, 2047 flow [2025-02-08 01:14:36,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 200 transitions, 1996 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-08 01:14:36,831 INFO L231 Difference]: Finished difference. Result has 94 places, 128 transitions, 1268 flow [2025-02-08 01:14:36,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1268, PETRI_PLACES=94, PETRI_TRANSITIONS=128} [2025-02-08 01:14:36,831 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2025-02-08 01:14:36,832 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 128 transitions, 1268 flow [2025-02-08 01:14:36,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:36,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:36,832 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] [2025-02-08 01:14:36,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 01:14:36,832 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)] === [2025-02-08 01:14:36,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:36,832 INFO L85 PathProgramCache]: Analyzing trace with hash 346674695, now seen corresponding path program 2 times [2025-02-08 01:14:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888157622] [2025-02-08 01:14:36,832 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:36,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:36,839 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:14:36,844 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:14:36,844 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:14:36,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:36,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:36,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888157622] [2025-02-08 01:14:36,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888157622] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:36,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:36,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:36,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070756875] [2025-02-08 01:14:36,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:36,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:36,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:36,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:36,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:36,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:36,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 128 transitions, 1268 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:36,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:36,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:36,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:38,031 INFO L124 PetriNetUnfolderBase]: 13342/18711 cut-off events. [2025-02-08 01:14:38,032 INFO L125 PetriNetUnfolderBase]: For 78634/78678 co-relation queries the response was YES. [2025-02-08 01:14:38,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69432 conditions, 18711 events. 13342/18711 cut-off events. For 78634/78678 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 105821 event pairs, 6881 based on Foata normal form. 1/18639 useless extension candidates. Maximal degree in co-relation 63297. Up to 12893 conditions per place. [2025-02-08 01:14:38,153 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 138 selfloop transitions, 20 changer transitions 16/178 dead transitions. [2025-02-08 01:14:38,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 1818 flow [2025-02-08 01:14:38,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-02-08 01:14:38,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-02-08 01:14:38,155 INFO L175 Difference]: Start difference. First operand has 94 places, 128 transitions, 1268 flow. Second operand 5 states and 130 transitions. [2025-02-08 01:14:38,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 1818 flow [2025-02-08 01:14:38,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 178 transitions, 1801 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:38,330 INFO L231 Difference]: Finished difference. Result has 98 places, 125 transitions, 1251 flow [2025-02-08 01:14:38,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1251, PETRI_PLACES=98, PETRI_TRANSITIONS=125} [2025-02-08 01:14:38,331 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2025-02-08 01:14:38,331 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 125 transitions, 1251 flow [2025-02-08 01:14:38,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:38,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:38,331 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] [2025-02-08 01:14:38,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 01:14:38,331 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)] === [2025-02-08 01:14:38,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:38,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1569308107, now seen corresponding path program 3 times [2025-02-08 01:14:38,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:38,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757658259] [2025-02-08 01:14:38,332 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:38,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:38,338 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:14:38,343 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:14:38,343 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:14:38,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:38,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:38,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757658259] [2025-02-08 01:14:38,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757658259] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:38,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:38,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:38,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44513495] [2025-02-08 01:14:38,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:38,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:38,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:38,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:38,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:38,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:38,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 125 transitions, 1251 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:38,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:38,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:38,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:39,636 INFO L124 PetriNetUnfolderBase]: 13385/18758 cut-off events. [2025-02-08 01:14:39,636 INFO L125 PetriNetUnfolderBase]: For 81151/81195 co-relation queries the response was YES. [2025-02-08 01:14:39,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70102 conditions, 18758 events. 13385/18758 cut-off events. For 81151/81195 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 105765 event pairs, 6696 based on Foata normal form. 1/18686 useless extension candidates. Maximal degree in co-relation 70027. Up to 12893 conditions per place. [2025-02-08 01:14:39,744 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 150 selfloop transitions, 26 changer transitions 9/189 dead transitions. [2025-02-08 01:14:39,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 189 transitions, 1956 flow [2025-02-08 01:14:39,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-02-08 01:14:39,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2025-02-08 01:14:39,745 INFO L175 Difference]: Start difference. First operand has 98 places, 125 transitions, 1251 flow. Second operand 5 states and 137 transitions. [2025-02-08 01:14:39,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 189 transitions, 1956 flow [2025-02-08 01:14:39,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 189 transitions, 1908 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-08 01:14:39,867 INFO L231 Difference]: Finished difference. Result has 99 places, 129 transitions, 1285 flow [2025-02-08 01:14:39,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1285, PETRI_PLACES=99, PETRI_TRANSITIONS=129} [2025-02-08 01:14:39,868 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2025-02-08 01:14:39,868 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 129 transitions, 1285 flow [2025-02-08 01:14:39,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:39,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:39,868 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] [2025-02-08 01:14:39,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 01:14:39,868 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)] === [2025-02-08 01:14:39,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1478871627, now seen corresponding path program 4 times [2025-02-08 01:14:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696596227] [2025-02-08 01:14:39,869 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:39,876 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-08 01:14:39,880 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 26 statements. [2025-02-08 01:14:39,880 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:14:39,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696596227] [2025-02-08 01:14:39,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696596227] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:39,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:39,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:39,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888423562] [2025-02-08 01:14:39,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:39,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:39,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:39,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:39,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:39,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:39,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 129 transitions, 1285 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:39,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:39,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:39,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:41,381 INFO L124 PetriNetUnfolderBase]: 13187/18464 cut-off events. [2025-02-08 01:14:41,381 INFO L125 PetriNetUnfolderBase]: For 86725/86769 co-relation queries the response was YES. [2025-02-08 01:14:41,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70296 conditions, 18464 events. 13187/18464 cut-off events. For 86725/86769 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 103746 event pairs, 7148 based on Foata normal form. 1/18408 useless extension candidates. Maximal degree in co-relation 66168. Up to 14470 conditions per place. [2025-02-08 01:14:41,526 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 147 selfloop transitions, 10 changer transitions 18/179 dead transitions. [2025-02-08 01:14:41,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 179 transitions, 1846 flow [2025-02-08 01:14:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2025-02-08 01:14:41,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2025-02-08 01:14:41,527 INFO L175 Difference]: Start difference. First operand has 99 places, 129 transitions, 1285 flow. Second operand 5 states and 128 transitions. [2025-02-08 01:14:41,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 179 transitions, 1846 flow [2025-02-08 01:14:41,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 179 transitions, 1804 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-02-08 01:14:41,769 INFO L231 Difference]: Finished difference. Result has 100 places, 124 transitions, 1179 flow [2025-02-08 01:14:41,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1179, PETRI_PLACES=100, PETRI_TRANSITIONS=124} [2025-02-08 01:14:41,770 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2025-02-08 01:14:41,771 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 124 transitions, 1179 flow [2025-02-08 01:14:41,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:41,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:41,771 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] [2025-02-08 01:14:41,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 01:14:41,773 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)] === [2025-02-08 01:14:41,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:41,773 INFO L85 PathProgramCache]: Analyzing trace with hash 502953895, now seen corresponding path program 5 times [2025-02-08 01:14:41,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:41,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113941626] [2025-02-08 01:14:41,774 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:41,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:41,781 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:14:41,788 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:14:41,789 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:14:41,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:41,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:41,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113941626] [2025-02-08 01:14:41,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113941626] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:41,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:41,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:41,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491768119] [2025-02-08 01:14:41,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:41,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:41,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:41,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:41,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:41,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:41,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 124 transitions, 1179 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:41,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:41,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:41,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:43,303 INFO L124 PetriNetUnfolderBase]: 13582/19136 cut-off events. [2025-02-08 01:14:43,303 INFO L125 PetriNetUnfolderBase]: For 83760/83760 co-relation queries the response was YES. [2025-02-08 01:14:43,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72498 conditions, 19136 events. 13582/19136 cut-off events. For 83760/83760 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 109350 event pairs, 4108 based on Foata normal form. 1/19102 useless extension candidates. Maximal degree in co-relation 72422. Up to 9493 conditions per place. [2025-02-08 01:14:43,416 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 173 selfloop transitions, 9 changer transitions 10/196 dead transitions. [2025-02-08 01:14:43,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 196 transitions, 2012 flow [2025-02-08 01:14:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:43,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-08 01:14:43,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-02-08 01:14:43,417 INFO L175 Difference]: Start difference. First operand has 100 places, 124 transitions, 1179 flow. Second operand 5 states and 133 transitions. [2025-02-08 01:14:43,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 196 transitions, 2012 flow [2025-02-08 01:14:43,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 196 transitions, 1978 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-02-08 01:14:43,606 INFO L231 Difference]: Finished difference. Result has 102 places, 128 transitions, 1210 flow [2025-02-08 01:14:43,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1210, PETRI_PLACES=102, PETRI_TRANSITIONS=128} [2025-02-08 01:14:43,607 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2025-02-08 01:14:43,607 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 128 transitions, 1210 flow [2025-02-08 01:14:43,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:43,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:43,607 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] [2025-02-08 01:14:43,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 01:14:43,608 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)] === [2025-02-08 01:14:43,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:43,608 INFO L85 PathProgramCache]: Analyzing trace with hash 903655249, now seen corresponding path program 6 times [2025-02-08 01:14:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:43,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65442760] [2025-02-08 01:14:43,609 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:43,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:43,616 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:14:43,622 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:14:43,622 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:14:43,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:43,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:43,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65442760] [2025-02-08 01:14:43,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65442760] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:43,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:43,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:43,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888957387] [2025-02-08 01:14:43,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:43,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:43,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:43,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:43,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:43,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:43,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 128 transitions, 1210 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:43,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:43,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:43,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:44,929 INFO L124 PetriNetUnfolderBase]: 13567/19036 cut-off events. [2025-02-08 01:14:44,929 INFO L125 PetriNetUnfolderBase]: For 92774/92818 co-relation queries the response was YES. [2025-02-08 01:14:45,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73845 conditions, 19036 events. 13567/19036 cut-off events. For 92774/92818 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 108074 event pairs, 7153 based on Foata normal form. 1/18980 useless extension candidates. Maximal degree in co-relation 54005. Up to 14470 conditions per place. [2025-02-08 01:14:45,098 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 161 selfloop transitions, 15 changer transitions 10/190 dead transitions. [2025-02-08 01:14:45,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 190 transitions, 1894 flow [2025-02-08 01:14:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-02-08 01:14:45,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2025-02-08 01:14:45,099 INFO L175 Difference]: Start difference. First operand has 102 places, 128 transitions, 1210 flow. Second operand 5 states and 134 transitions. [2025-02-08 01:14:45,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 190 transitions, 1894 flow [2025-02-08 01:14:45,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 190 transitions, 1873 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:45,323 INFO L231 Difference]: Finished difference. Result has 107 places, 130 transitions, 1208 flow [2025-02-08 01:14:45,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1208, PETRI_PLACES=107, PETRI_TRANSITIONS=130} [2025-02-08 01:14:45,325 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2025-02-08 01:14:45,325 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 130 transitions, 1208 flow [2025-02-08 01:14:45,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:45,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:45,326 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] [2025-02-08 01:14:45,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 01:14:45,326 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)] === [2025-02-08 01:14:45,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:45,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1596273691, now seen corresponding path program 1 times [2025-02-08 01:14:45,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:45,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877743747] [2025-02-08 01:14:45,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:45,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:45,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:14:45,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:14:45,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:45,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877743747] [2025-02-08 01:14:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877743747] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:45,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:45,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:45,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165783019] [2025-02-08 01:14:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:45,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:45,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:45,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:45,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:45,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 130 transitions, 1208 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:45,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:45,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:45,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:46,772 INFO L124 PetriNetUnfolderBase]: 14297/20480 cut-off events. [2025-02-08 01:14:46,772 INFO L125 PetriNetUnfolderBase]: For 102973/103069 co-relation queries the response was YES. [2025-02-08 01:14:46,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79403 conditions, 20480 events. 14297/20480 cut-off events. For 102973/103069 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 125194 event pairs, 4085 based on Foata normal form. 1/20457 useless extension candidates. Maximal degree in co-relation 58838. Up to 9305 conditions per place. [2025-02-08 01:14:46,880 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 187 selfloop transitions, 15 changer transitions 3/209 dead transitions. [2025-02-08 01:14:46,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 209 transitions, 2164 flow [2025-02-08 01:14:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-02-08 01:14:46,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5673469387755102 [2025-02-08 01:14:46,881 INFO L175 Difference]: Start difference. First operand has 107 places, 130 transitions, 1208 flow. Second operand 5 states and 139 transitions. [2025-02-08 01:14:46,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 209 transitions, 2164 flow [2025-02-08 01:14:47,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 209 transitions, 2110 flow, removed 21 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:47,043 INFO L231 Difference]: Finished difference. Result has 111 places, 139 transitions, 1372 flow [2025-02-08 01:14:47,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1372, PETRI_PLACES=111, PETRI_TRANSITIONS=139} [2025-02-08 01:14:47,044 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 68 predicate places. [2025-02-08 01:14:47,044 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 139 transitions, 1372 flow [2025-02-08 01:14:47,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:47,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:47,044 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] [2025-02-08 01:14:47,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 01:14:47,045 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)] === [2025-02-08 01:14:47,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash -54477191, now seen corresponding path program 2 times [2025-02-08 01:14:47,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:47,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081899527] [2025-02-08 01:14:47,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:47,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:47,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:14:47,071 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-02-08 01:14:47,072 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:14:47,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:47,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081899527] [2025-02-08 01:14:47,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081899527] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:47,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:47,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722283623] [2025-02-08 01:14:47,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:47,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:47,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:47,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:47,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:47,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:47,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 139 transitions, 1372 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:47,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:47,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:47,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:48,667 INFO L124 PetriNetUnfolderBase]: 14272/20167 cut-off events. [2025-02-08 01:14:48,667 INFO L125 PetriNetUnfolderBase]: For 108663/108707 co-relation queries the response was YES. [2025-02-08 01:14:48,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80218 conditions, 20167 events. 14272/20167 cut-off events. For 108663/108707 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 117118 event pairs, 7193 based on Foata normal form. 1/20111 useless extension candidates. Maximal degree in co-relation 75465. Up to 14470 conditions per place. [2025-02-08 01:14:48,824 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 178 selfloop transitions, 21 changer transitions 3/206 dead transitions. [2025-02-08 01:14:48,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 206 transitions, 2177 flow [2025-02-08 01:14:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2025-02-08 01:14:48,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5551020408163265 [2025-02-08 01:14:48,825 INFO L175 Difference]: Start difference. First operand has 111 places, 139 transitions, 1372 flow. Second operand 5 states and 136 transitions. [2025-02-08 01:14:48,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 206 transitions, 2177 flow [2025-02-08 01:14:49,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 206 transitions, 2152 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:49,003 INFO L231 Difference]: Finished difference. Result has 117 places, 143 transitions, 1488 flow [2025-02-08 01:14:49,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1488, PETRI_PLACES=117, PETRI_TRANSITIONS=143} [2025-02-08 01:14:49,004 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2025-02-08 01:14:49,004 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 143 transitions, 1488 flow [2025-02-08 01:14:49,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:49,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:49,004 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] [2025-02-08 01:14:49,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 01:14:49,005 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)] === [2025-02-08 01:14:49,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:49,005 INFO L85 PathProgramCache]: Analyzing trace with hash -726058827, now seen corresponding path program 3 times [2025-02-08 01:14:49,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:49,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027525469] [2025-02-08 01:14:49,006 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:49,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:49,021 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:14:49,031 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-02-08 01:14:49,034 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:14:49,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:49,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:49,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027525469] [2025-02-08 01:14:49,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027525469] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:49,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:49,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:49,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936732994] [2025-02-08 01:14:49,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:49,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:49,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:49,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:49,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:49,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:49,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 143 transitions, 1488 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:49,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:49,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:49,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:51,482 INFO L124 PetriNetUnfolderBase]: 18182/26253 cut-off events. [2025-02-08 01:14:51,482 INFO L125 PetriNetUnfolderBase]: For 148378/148458 co-relation queries the response was YES. [2025-02-08 01:14:51,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104149 conditions, 26253 events. 18182/26253 cut-off events. For 148378/148458 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 168013 event pairs, 2725 based on Foata normal form. 1/26250 useless extension candidates. Maximal degree in co-relation 100516. Up to 8197 conditions per place. [2025-02-08 01:14:51,797 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 220 selfloop transitions, 44 changer transitions 4/272 dead transitions. [2025-02-08 01:14:51,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 272 transitions, 3047 flow [2025-02-08 01:14:51,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:14:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:14:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2025-02-08 01:14:51,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2025-02-08 01:14:51,799 INFO L175 Difference]: Start difference. First operand has 117 places, 143 transitions, 1488 flow. Second operand 6 states and 177 transitions. [2025-02-08 01:14:51,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 272 transitions, 3047 flow [2025-02-08 01:14:52,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 272 transitions, 3017 flow, removed 7 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:52,045 INFO L231 Difference]: Finished difference. Result has 125 places, 166 transitions, 1935 flow [2025-02-08 01:14:52,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1935, PETRI_PLACES=125, PETRI_TRANSITIONS=166} [2025-02-08 01:14:52,046 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 82 predicate places. [2025-02-08 01:14:52,047 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 166 transitions, 1935 flow [2025-02-08 01:14:52,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:52,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:52,047 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] [2025-02-08 01:14:52,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 01:14:52,048 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)] === [2025-02-08 01:14:52,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash 956854549, now seen corresponding path program 4 times [2025-02-08 01:14:52,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256684235] [2025-02-08 01:14:52,048 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:52,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:52,054 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:14:52,057 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-02-08 01:14:52,057 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:14:52,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:52,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:52,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256684235] [2025-02-08 01:14:52,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256684235] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:52,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:52,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:52,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078253716] [2025-02-08 01:14:52,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:52,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:52,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:52,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:52,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:52,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:52,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 166 transitions, 1935 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:52,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:52,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:52,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:54,034 INFO L124 PetriNetUnfolderBase]: 18547/26739 cut-off events. [2025-02-08 01:14:54,034 INFO L125 PetriNetUnfolderBase]: For 184278/184278 co-relation queries the response was YES. [2025-02-08 01:14:54,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112679 conditions, 26739 events. 18547/26739 cut-off events. For 184278/184278 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 169659 event pairs, 3124 based on Foata normal form. 1/26732 useless extension candidates. Maximal degree in co-relation 110609. Up to 8990 conditions per place. [2025-02-08 01:14:54,324 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 208 selfloop transitions, 70 changer transitions 4/286 dead transitions. [2025-02-08 01:14:54,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 286 transitions, 3513 flow [2025-02-08 01:14:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:14:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:14:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2025-02-08 01:14:54,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5884353741496599 [2025-02-08 01:14:54,326 INFO L175 Difference]: Start difference. First operand has 125 places, 166 transitions, 1935 flow. Second operand 6 states and 173 transitions. [2025-02-08 01:14:54,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 286 transitions, 3513 flow [2025-02-08 01:14:55,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 286 transitions, 3437 flow, removed 36 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:55,268 INFO L231 Difference]: Finished difference. Result has 133 places, 179 transitions, 2349 flow [2025-02-08 01:14:55,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2349, PETRI_PLACES=133, PETRI_TRANSITIONS=179} [2025-02-08 01:14:55,269 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2025-02-08 01:14:55,269 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 179 transitions, 2349 flow [2025-02-08 01:14:55,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:55,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:55,269 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] [2025-02-08 01:14:55,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 01:14:55,269 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)] === [2025-02-08 01:14:55,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:55,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1503658951, now seen corresponding path program 5 times [2025-02-08 01:14:55,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:55,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612600093] [2025-02-08 01:14:55,270 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:55,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:55,280 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:14:55,289 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:14:55,290 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:55,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:55,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612600093] [2025-02-08 01:14:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612600093] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:55,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:55,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:55,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019641923] [2025-02-08 01:14:55,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:55,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:55,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:55,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:55,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:55,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:55,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 179 transitions, 2349 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:55,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:55,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:55,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:57,185 INFO L124 PetriNetUnfolderBase]: 18382/26372 cut-off events. [2025-02-08 01:14:57,185 INFO L125 PetriNetUnfolderBase]: For 202884/202884 co-relation queries the response was YES. [2025-02-08 01:14:57,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114237 conditions, 26372 events. 18382/26372 cut-off events. For 202884/202884 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 165810 event pairs, 8899 based on Foata normal form. 1/26353 useless extension candidates. Maximal degree in co-relation 112046. Up to 20279 conditions per place. [2025-02-08 01:14:57,525 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 191 selfloop transitions, 28 changer transitions 8/231 dead transitions. [2025-02-08 01:14:57,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 231 transitions, 3084 flow [2025-02-08 01:14:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:57,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-02-08 01:14:57,526 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-02-08 01:14:57,526 INFO L175 Difference]: Start difference. First operand has 133 places, 179 transitions, 2349 flow. Second operand 5 states and 131 transitions. [2025-02-08 01:14:57,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 231 transitions, 3084 flow [2025-02-08 01:14:58,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 231 transitions, 3024 flow, removed 28 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:58,814 INFO L231 Difference]: Finished difference. Result has 137 places, 174 transitions, 2284 flow [2025-02-08 01:14:58,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2284, PETRI_PLACES=137, PETRI_TRANSITIONS=174} [2025-02-08 01:14:58,815 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2025-02-08 01:14:58,815 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 174 transitions, 2284 flow [2025-02-08 01:14:58,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:58,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:58,816 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] [2025-02-08 01:14:58,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 01:14:58,816 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)] === [2025-02-08 01:14:58,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash -75751723, now seen corresponding path program 6 times [2025-02-08 01:14:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:58,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421528552] [2025-02-08 01:14:58,817 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:58,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:58,825 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:14:58,830 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-02-08 01:14:58,830 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:14:58,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:58,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421528552] [2025-02-08 01:14:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421528552] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:58,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:58,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613469343] [2025-02-08 01:14:58,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:58,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:58,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:58,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:58,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:58,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:14:58,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 174 transitions, 2284 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:58,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:58,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:14:58,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:00,819 INFO L124 PetriNetUnfolderBase]: 18213/26125 cut-off events. [2025-02-08 01:15:00,819 INFO L125 PetriNetUnfolderBase]: For 199149/199149 co-relation queries the response was YES. [2025-02-08 01:15:00,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112559 conditions, 26125 events. 18213/26125 cut-off events. For 199149/199149 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 162801 event pairs, 6146 based on Foata normal form. 1/26106 useless extension candidates. Maximal degree in co-relation 110465. Up to 13773 conditions per place. [2025-02-08 01:15:01,030 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 159 selfloop transitions, 61 changer transitions 9/233 dead transitions. [2025-02-08 01:15:01,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 233 transitions, 3132 flow [2025-02-08 01:15:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:15:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:15:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-02-08 01:15:01,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-02-08 01:15:01,032 INFO L175 Difference]: Start difference. First operand has 137 places, 174 transitions, 2284 flow. Second operand 5 states and 131 transitions. [2025-02-08 01:15:01,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 233 transitions, 3132 flow [2025-02-08 01:15:01,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 233 transitions, 3049 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-02-08 01:15:01,783 INFO L231 Difference]: Finished difference. Result has 139 places, 174 transitions, 2425 flow [2025-02-08 01:15:01,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2425, PETRI_PLACES=139, PETRI_TRANSITIONS=174} [2025-02-08 01:15:01,784 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 96 predicate places. [2025-02-08 01:15:01,784 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 174 transitions, 2425 flow [2025-02-08 01:15:01,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:01,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:01,784 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] [2025-02-08 01:15:01,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 01:15:01,784 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)] === [2025-02-08 01:15:01,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1709152162, now seen corresponding path program 1 times [2025-02-08 01:15:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674287270] [2025-02-08 01:15:01,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:15:01,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:01,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:15:01,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:15:01,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:01,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:01,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:01,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674287270] [2025-02-08 01:15:01,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674287270] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:01,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:01,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:15:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102047218] [2025-02-08 01:15:01,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:01,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:01,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:01,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:01,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:01,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:15:01,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 174 transitions, 2425 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:01,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:01,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:15:01,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:04,250 INFO L124 PetriNetUnfolderBase]: 18263/26807 cut-off events. [2025-02-08 01:15:04,250 INFO L125 PetriNetUnfolderBase]: For 228213/228213 co-relation queries the response was YES. [2025-02-08 01:15:04,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118700 conditions, 26807 events. 18263/26807 cut-off events. For 228213/228213 co-relation queries the response was YES. Maximal size of possible extension queue 1387. Compared 177153 event pairs, 10500 based on Foata normal form. 583/27384 useless extension candidates. Maximal degree in co-relation 114531. Up to 17087 conditions per place. [2025-02-08 01:15:04,624 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 228 selfloop transitions, 7 changer transitions 74/313 dead transitions. [2025-02-08 01:15:04,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 313 transitions, 5050 flow [2025-02-08 01:15:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:15:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:15:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2025-02-08 01:15:04,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-08 01:15:04,626 INFO L175 Difference]: Start difference. First operand has 139 places, 174 transitions, 2425 flow. Second operand 6 states and 140 transitions. [2025-02-08 01:15:04,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 313 transitions, 5050 flow [2025-02-08 01:15:05,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 313 transitions, 4780 flow, removed 78 selfloop flow, removed 4 redundant places. [2025-02-08 01:15:05,791 INFO L231 Difference]: Finished difference. Result has 140 places, 167 transitions, 2266 flow [2025-02-08 01:15:05,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2266, PETRI_PLACES=140, PETRI_TRANSITIONS=167} [2025-02-08 01:15:05,792 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 97 predicate places. [2025-02-08 01:15:05,792 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 167 transitions, 2266 flow [2025-02-08 01:15:05,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:05,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:05,792 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] [2025-02-08 01:15:05,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 01:15:05,793 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)] === [2025-02-08 01:15:05,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:05,793 INFO L85 PathProgramCache]: Analyzing trace with hash 429797983, now seen corresponding path program 1 times [2025-02-08 01:15:05,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:05,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234877327] [2025-02-08 01:15:05,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:15:05,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:05,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:15:05,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:15:05,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:05,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:05,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:05,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234877327] [2025-02-08 01:15:05,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234877327] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:05,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:05,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:15:05,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561128955] [2025-02-08 01:15:05,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:05,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:05,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:05,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:05,863 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:15:05,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 167 transitions, 2266 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:05,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:05,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:15:05,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:08,159 INFO L124 PetriNetUnfolderBase]: 17958/26107 cut-off events. [2025-02-08 01:15:08,159 INFO L125 PetriNetUnfolderBase]: For 197626/197626 co-relation queries the response was YES. [2025-02-08 01:15:08,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110632 conditions, 26107 events. 17958/26107 cut-off events. For 197626/197626 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 168978 event pairs, 8935 based on Foata normal form. 1/26092 useless extension candidates. Maximal degree in co-relation 103434. Up to 19621 conditions per place. [2025-02-08 01:15:08,335 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 208 selfloop transitions, 18 changer transitions 3/233 dead transitions. [2025-02-08 01:15:08,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 233 transitions, 3148 flow [2025-02-08 01:15:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:15:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:15:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2025-02-08 01:15:08,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2025-02-08 01:15:08,339 INFO L175 Difference]: Start difference. First operand has 140 places, 167 transitions, 2266 flow. Second operand 5 states and 138 transitions. [2025-02-08 01:15:08,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 233 transitions, 3148 flow [2025-02-08 01:15:09,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 233 transitions, 3103 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 01:15:09,262 INFO L231 Difference]: Finished difference. Result has 141 places, 171 transitions, 2388 flow [2025-02-08 01:15:09,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2388, PETRI_PLACES=141, PETRI_TRANSITIONS=171} [2025-02-08 01:15:09,263 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2025-02-08 01:15:09,263 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 171 transitions, 2388 flow [2025-02-08 01:15:09,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:09,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:09,263 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] [2025-02-08 01:15:09,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 01:15:09,263 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)] === [2025-02-08 01:15:09,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1498570559, now seen corresponding path program 2 times [2025-02-08 01:15:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:09,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283618653] [2025-02-08 01:15:09,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:09,270 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:15:09,276 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-02-08 01:15:09,276 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:15:09,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:09,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283618653] [2025-02-08 01:15:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283618653] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:09,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:09,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:15:09,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480008395] [2025-02-08 01:15:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:09,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:09,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:09,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:09,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:09,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:15:09,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 171 transitions, 2388 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:09,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:09,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:15:09,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:11,954 INFO L124 PetriNetUnfolderBase]: 17846/25954 cut-off events. [2025-02-08 01:15:11,954 INFO L125 PetriNetUnfolderBase]: For 202811/202811 co-relation queries the response was YES. [2025-02-08 01:15:12,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108901 conditions, 25954 events. 17846/25954 cut-off events. For 202811/202811 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 167631 event pairs, 6979 based on Foata normal form. 1/25947 useless extension candidates. Maximal degree in co-relation 104677. Up to 13350 conditions per place. [2025-02-08 01:15:12,143 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 210 selfloop transitions, 23 changer transitions 3/240 dead transitions. [2025-02-08 01:15:12,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 240 transitions, 3385 flow [2025-02-08 01:15:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:15:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:15:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-02-08 01:15:12,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2025-02-08 01:15:12,145 INFO L175 Difference]: Start difference. First operand has 141 places, 171 transitions, 2388 flow. Second operand 5 states and 137 transitions. [2025-02-08 01:15:12,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 240 transitions, 3385 flow [2025-02-08 01:15:12,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 240 transitions, 3363 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-08 01:15:12,856 INFO L231 Difference]: Finished difference. Result has 146 places, 180 transitions, 2656 flow [2025-02-08 01:15:12,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2656, PETRI_PLACES=146, PETRI_TRANSITIONS=180} [2025-02-08 01:15:12,857 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2025-02-08 01:15:12,857 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 180 transitions, 2656 flow [2025-02-08 01:15:12,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:12,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:12,858 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] [2025-02-08 01:15:12,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 01:15:12,858 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)] === [2025-02-08 01:15:12,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash -103278857, now seen corresponding path program 3 times [2025-02-08 01:15:12,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:12,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458343994] [2025-02-08 01:15:12,862 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:15:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:12,867 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:15:12,878 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-02-08 01:15:12,878 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:15:12,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:12,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:12,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458343994] [2025-02-08 01:15:12,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458343994] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:12,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:12,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:15:12,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509690724] [2025-02-08 01:15:12,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:12,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:12,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:12,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:12,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:12,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:15:12,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 180 transitions, 2656 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:12,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:12,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:15:12,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:15,047 INFO L124 PetriNetUnfolderBase]: 17734/25776 cut-off events. [2025-02-08 01:15:15,048 INFO L125 PetriNetUnfolderBase]: For 210448/210448 co-relation queries the response was YES. [2025-02-08 01:15:15,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109507 conditions, 25776 events. 17734/25776 cut-off events. For 210448/210448 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 166393 event pairs, 9133 based on Foata normal form. 1/25761 useless extension candidates. Maximal degree in co-relation 106628. Up to 19621 conditions per place. [2025-02-08 01:15:15,305 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 188 selfloop transitions, 30 changer transitions 7/229 dead transitions. [2025-02-08 01:15:15,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 229 transitions, 3292 flow [2025-02-08 01:15:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:15:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:15:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-08 01:15:15,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-02-08 01:15:15,306 INFO L175 Difference]: Start difference. First operand has 146 places, 180 transitions, 2656 flow. Second operand 5 states and 133 transitions. [2025-02-08 01:15:15,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 229 transitions, 3292 flow [2025-02-08 01:15:16,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 229 transitions, 3244 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-02-08 01:15:16,121 INFO L231 Difference]: Finished difference. Result has 149 places, 176 transitions, 2616 flow [2025-02-08 01:15:16,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2616, PETRI_PLACES=149, PETRI_TRANSITIONS=176} [2025-02-08 01:15:16,125 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 106 predicate places. [2025-02-08 01:15:16,125 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 176 transitions, 2616 flow [2025-02-08 01:15:16,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:16,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:16,125 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] [2025-02-08 01:15:16,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-08 01:15:16,127 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:16,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1427175065, now seen corresponding path program 4 times [2025-02-08 01:15:16,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:16,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968771082] [2025-02-08 01:15:16,127 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:16,133 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:15:16,134 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-02-08 01:15:16,134 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:15:16,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:16,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968771082] [2025-02-08 01:15:16,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968771082] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:16,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:16,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:15:16,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128458495] [2025-02-08 01:15:16,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:16,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:16,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:16,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:16,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:15:16,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 176 transitions, 2616 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:16,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:16,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:15:16,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:19,193 INFO L124 PetriNetUnfolderBase]: 21133/30858 cut-off events. [2025-02-08 01:15:19,193 INFO L125 PetriNetUnfolderBase]: For 237130/237130 co-relation queries the response was YES. [2025-02-08 01:15:19,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129600 conditions, 30858 events. 21133/30858 cut-off events. For 237130/237130 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 205233 event pairs, 4445 based on Foata normal form. 1/30855 useless extension candidates. Maximal degree in co-relation 127675. Up to 7750 conditions per place. [2025-02-08 01:15:19,534 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 215 selfloop transitions, 60 changer transitions 4/283 dead transitions. [2025-02-08 01:15:19,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 283 transitions, 3923 flow [2025-02-08 01:15:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:15:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:15:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2025-02-08 01:15:19,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2025-02-08 01:15:19,535 INFO L175 Difference]: Start difference. First operand has 149 places, 176 transitions, 2616 flow. Second operand 6 states and 177 transitions. [2025-02-08 01:15:19,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 283 transitions, 3923 flow [2025-02-08 01:15:20,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 283 transitions, 3810 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-08 01:15:20,383 INFO L231 Difference]: Finished difference. Result has 153 places, 191 transitions, 3045 flow [2025-02-08 01:15:20,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3045, PETRI_PLACES=153, PETRI_TRANSITIONS=191} [2025-02-08 01:15:20,383 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2025-02-08 01:15:20,383 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 191 transitions, 3045 flow [2025-02-08 01:15:20,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:20,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:20,384 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] [2025-02-08 01:15:20,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-08 01:15:20,384 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:20,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:20,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1838141993, now seen corresponding path program 5 times [2025-02-08 01:15:20,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:20,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187201956] [2025-02-08 01:15:20,384 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:20,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:20,388 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:15:20,392 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:15:20,392 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:20,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:20,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187201956] [2025-02-08 01:15:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187201956] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:20,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:20,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:15:20,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768423714] [2025-02-08 01:15:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:20,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:20,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:20,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:20,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:15:20,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 191 transitions, 3045 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:20,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:20,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:15:20,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:23,388 INFO L124 PetriNetUnfolderBase]: 21007/30583 cut-off events. [2025-02-08 01:15:23,388 INFO L125 PetriNetUnfolderBase]: For 284272/284272 co-relation queries the response was YES. [2025-02-08 01:15:23,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134977 conditions, 30583 events. 21007/30583 cut-off events. For 284272/284272 co-relation queries the response was YES. Maximal size of possible extension queue 1588. Compared 201719 event pairs, 8713 based on Foata normal form. 1/30568 useless extension candidates. Maximal degree in co-relation 131198. Up to 18370 conditions per place. [2025-02-08 01:15:23,678 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 162 selfloop transitions, 73 changer transitions 7/246 dead transitions. [2025-02-08 01:15:23,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 246 transitions, 3802 flow [2025-02-08 01:15:23,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:15:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:15:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-08 01:15:23,680 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-02-08 01:15:23,680 INFO L175 Difference]: Start difference. First operand has 153 places, 191 transitions, 3045 flow. Second operand 5 states and 133 transitions. [2025-02-08 01:15:23,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 246 transitions, 3802 flow [2025-02-08 01:15:24,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 246 transitions, 3766 flow, removed 18 selfloop flow, removed 0 redundant places. [2025-02-08 01:15:24,964 INFO L231 Difference]: Finished difference. Result has 158 places, 188 transitions, 3112 flow [2025-02-08 01:15:24,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3112, PETRI_PLACES=158, PETRI_TRANSITIONS=188} [2025-02-08 01:15:24,964 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 115 predicate places. [2025-02-08 01:15:24,965 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 188 transitions, 3112 flow [2025-02-08 01:15:24,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:24,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:24,965 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] [2025-02-08 01:15:24,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-08 01:15:24,965 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:24,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:24,966 INFO L85 PathProgramCache]: Analyzing trace with hash 369406581, now seen corresponding path program 6 times [2025-02-08 01:15:24,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:24,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753659369] [2025-02-08 01:15:24,966 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:24,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:24,970 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:15:24,974 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-02-08 01:15:24,974 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:15:24,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:25,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753659369] [2025-02-08 01:15:25,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753659369] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:25,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:25,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:15:25,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359910768] [2025-02-08 01:15:25,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:25,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:25,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:25,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:25,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-02-08 01:15:25,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 188 transitions, 3112 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:25,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:25,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-02-08 01:15:25,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand