./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:47:22,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:47:22,228 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:47:22,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:47:22,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:47:22,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:47:22,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:47:22,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:47:22,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:47:22,256 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:47:22,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:47:22,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:47:22,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:47:22,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:47:22,256 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:47:22,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:47:22,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:47:22,256 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:47:22,257 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:47:22,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:47:22,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:47:22,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:47:22,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:47:22,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:47:22,258 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 ! overflow) ) 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 -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2025-02-06 18:47:22,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:47:22,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:47:22,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:47:22,499 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:47:22,499 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:47:22,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2025-02-06 18:47:23,587 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d9da2e4c5/bd7223be67f24abda1a2874ef2b5b7df/FLAGea6d7961b [2025-02-06 18:47:23,825 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:47:23,825 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2025-02-06 18:47:23,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d9da2e4c5/bd7223be67f24abda1a2874ef2b5b7df/FLAGea6d7961b [2025-02-06 18:47:23,890 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d9da2e4c5/bd7223be67f24abda1a2874ef2b5b7df [2025-02-06 18:47:23,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:47:23,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:47:23,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:47:23,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:47:23,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:47:23,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:47:23" (1/1) ... [2025-02-06 18:47:23,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c1054d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:23, skipping insertion in model container [2025-02-06 18:47:23,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:47:23" (1/1) ... [2025-02-06 18:47:23,916 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:47:24,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:47:24,064 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:47:24,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:47:24,096 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:47:24,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24 WrapperNode [2025-02-06 18:47:24,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:47:24,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:47:24,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:47:24,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:47:24,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,130 INFO L138 Inliner]: procedures = 24, calls = 28, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 217 [2025-02-06 18:47:24,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:47:24,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:47:24,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:47:24,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:47:24,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,155 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-06 18:47:24,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,165 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,172 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:47:24,172 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:47:24,172 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:47:24,172 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:47:24,173 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (1/1) ... [2025-02-06 18:47:24,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:47:24,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:24,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:47:24,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:47:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:47:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:47:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:47:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:47:24,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:47:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:47:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:47:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:47:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:47:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:47:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:47:24,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:47:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:47:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:47:24,214 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:47:24,281 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:47:24,282 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:47:24,614 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:47:24,616 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:47:24,874 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:47:24,874 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:47:24,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:47:24 BoogieIcfgContainer [2025-02-06 18:47:24,875 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:47:24,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:47:24,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:47:24,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:47:24,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:47:23" (1/3) ... [2025-02-06 18:47:24,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3352c12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:47:24, skipping insertion in model container [2025-02-06 18:47:24,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:24" (2/3) ... [2025-02-06 18:47:24,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3352c12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:47:24, skipping insertion in model container [2025-02-06 18:47:24,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:47:24" (3/3) ... [2025-02-06 18:47:24,881 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2025-02-06 18:47:24,892 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:47:24,893 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-symm.wvr.c that has 3 procedures, 65 locations, 1 initial locations, 4 loop locations, and 20 error locations. [2025-02-06 18:47:24,893 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:47:24,960 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:47:24,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 72 transitions, 158 flow [2025-02-06 18:47:25,021 INFO L124 PetriNetUnfolderBase]: 8/70 cut-off events. [2025-02-06 18:47:25,024 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:47:25,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 8/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 220 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2025-02-06 18:47:25,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 72 transitions, 158 flow [2025-02-06 18:47:25,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 68 transitions, 145 flow [2025-02-06 18:47:25,037 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:47:25,045 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;@5f18111d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:47:25,045 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2025-02-06 18:47:25,047 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:47:25,047 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:47:25,047 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:47:25,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:25,048 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:47:25,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:47:25,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash 639149, now seen corresponding path program 1 times [2025-02-06 18:47:25,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:25,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314981818] [2025-02-06 18:47:25,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:25,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:25,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:47:25,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:47:25,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:25,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314981818] [2025-02-06 18:47:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314981818] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:25,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:25,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448994802] [2025-02-06 18:47:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:25,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:25,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:25,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:25,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-02-06 18:47:25,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:25,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-02-06 18:47:25,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:25,550 INFO L124 PetriNetUnfolderBase]: 285/771 cut-off events. [2025-02-06 18:47:25,550 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-02-06 18:47:25,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 771 events. 285/771 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4920 event pairs, 176 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 1156. Up to 443 conditions per place. [2025-02-06 18:47:25,556 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 33 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2025-02-06 18:47:25,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 237 flow [2025-02-06 18:47:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2025-02-06 18:47:25,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2025-02-06 18:47:25,566 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 145 flow. Second operand 4 states and 188 transitions. [2025-02-06 18:47:25,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 237 flow [2025-02-06 18:47:25,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:25,574 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 200 flow [2025-02-06 18:47:25,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2025-02-06 18:47:25,578 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2025-02-06 18:47:25,580 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 200 flow [2025-02-06 18:47:25,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:25,581 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:47:25,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:47:25,581 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:47:25,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1861582866, now seen corresponding path program 1 times [2025-02-06 18:47:25,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:25,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584750059] [2025-02-06 18:47:25,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:25,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:25,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:47:25,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:47:25,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:25,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584750059] [2025-02-06 18:47:25,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584750059] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011112594] [2025-02-06 18:47:25,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:25,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:25,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:25,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:25,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:47:25,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:47:25,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:47:25,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:25,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:25,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:25,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:25,790 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:47:25,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011112594] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:25,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:47:25,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:47:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009789592] [2025-02-06 18:47:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:25,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:47:25,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:25,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:47:25,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:47:25,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-02-06 18:47:25,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:25,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-02-06 18:47:25,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:25,965 INFO L124 PetriNetUnfolderBase]: 285/769 cut-off events. [2025-02-06 18:47:25,965 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-06 18:47:25,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 769 events. 285/769 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4899 event pairs, 176 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 1206. Up to 433 conditions per place. [2025-02-06 18:47:25,969 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 26 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2025-02-06 18:47:25,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 268 flow [2025-02-06 18:47:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:47:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:47:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2025-02-06 18:47:25,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-02-06 18:47:25,971 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 200 flow. Second operand 6 states and 256 transitions. [2025-02-06 18:47:25,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 268 flow [2025-02-06 18:47:25,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:47:25,972 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 216 flow [2025-02-06 18:47:25,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2025-02-06 18:47:25,973 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2025-02-06 18:47:25,973 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 216 flow [2025-02-06 18:47:25,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:25,974 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:47:25,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:26,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:26,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:47:26,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1874494565, now seen corresponding path program 1 times [2025-02-06 18:47:26,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:26,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977974848] [2025-02-06 18:47:26,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:26,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:26,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:26,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:26,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:26,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:26,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977974848] [2025-02-06 18:47:26,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977974848] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:26,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208941916] [2025-02-06 18:47:26,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:26,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:26,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:26,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:26,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:47:26,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:26,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:26,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:26,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:26,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:26,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:26,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:26,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208941916] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:26,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:26,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:47:26,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263961328] [2025-02-06 18:47:26,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:26,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:47:26,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:26,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:47:26,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:47:26,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-02-06 18:47:26,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:26,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:26,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-02-06 18:47:26,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:26,583 INFO L124 PetriNetUnfolderBase]: 291/793 cut-off events. [2025-02-06 18:47:26,584 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-02-06 18:47:26,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 793 events. 291/793 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5096 event pairs, 176 based on Foata normal form. 6/625 useless extension candidates. Maximal degree in co-relation 1208. Up to 444 conditions per place. [2025-02-06 18:47:26,587 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 31 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2025-02-06 18:47:26,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 442 flow [2025-02-06 18:47:26,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:47:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:47:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 422 transitions. [2025-02-06 18:47:26,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5861111111111111 [2025-02-06 18:47:26,591 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 216 flow. Second operand 10 states and 422 transitions. [2025-02-06 18:47:26,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 442 flow [2025-02-06 18:47:26,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 384 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-06 18:47:26,596 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 356 flow [2025-02-06 18:47:26,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2025-02-06 18:47:26,597 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2025-02-06 18:47:26,597 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 356 flow [2025-02-06 18:47:26,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:26,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:26,598 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:26,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:26,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:26,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:47:26,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:26,800 INFO L85 PathProgramCache]: Analyzing trace with hash -44679991, now seen corresponding path program 1 times [2025-02-06 18:47:26,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:26,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474305337] [2025-02-06 18:47:26,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:26,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:26,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:47:26,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:47:26,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:26,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:26,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:26,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474305337] [2025-02-06 18:47:26,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474305337] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:26,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:26,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:26,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348868114] [2025-02-06 18:47:26,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:26,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:47:26,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:26,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:47:26,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:47:26,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 72 [2025-02-06 18:47:26,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:26,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:26,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 72 [2025-02-06 18:47:26,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:26,960 INFO L124 PetriNetUnfolderBase]: 289/791 cut-off events. [2025-02-06 18:47:26,960 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2025-02-06 18:47:26,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 791 events. 289/791 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5001 event pairs, 176 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 1288. Up to 453 conditions per place. [2025-02-06 18:47:26,964 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 45 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2025-02-06 18:47:26,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 450 flow [2025-02-06 18:47:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:47:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:47:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2025-02-06 18:47:26,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2025-02-06 18:47:26,966 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 356 flow. Second operand 3 states and 156 transitions. [2025-02-06 18:47:26,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 450 flow [2025-02-06 18:47:26,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 420 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:26,969 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 330 flow [2025-02-06 18:47:26,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2025-02-06 18:47:26,969 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2025-02-06 18:47:26,969 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 330 flow [2025-02-06 18:47:26,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:26,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:26,970 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:26,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:47:26,970 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:47:26,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash 631644602, now seen corresponding path program 1 times [2025-02-06 18:47:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:26,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56109061] [2025-02-06 18:47:26,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:26,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:47:26,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:47:26,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:26,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:47:27,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:27,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56109061] [2025-02-06 18:47:27,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56109061] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:27,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:27,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:27,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592709722] [2025-02-06 18:47:27,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:27,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:27,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:27,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:27,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:27,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2025-02-06 18:47:27,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:27,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:27,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2025-02-06 18:47:27,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:27,270 INFO L124 PetriNetUnfolderBase]: 548/1262 cut-off events. [2025-02-06 18:47:27,270 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2025-02-06 18:47:27,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 1262 events. 548/1262 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8290 event pairs, 177 based on Foata normal form. 40/1046 useless extension candidates. Maximal degree in co-relation 2172. Up to 429 conditions per place. [2025-02-06 18:47:27,276 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 80 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2025-02-06 18:47:27,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 558 flow [2025-02-06 18:47:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2025-02-06 18:47:27,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2025-02-06 18:47:27,277 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 330 flow. Second operand 4 states and 202 transitions. [2025-02-06 18:47:27,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 558 flow [2025-02-06 18:47:27,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:27,280 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 350 flow [2025-02-06 18:47:27,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2025-02-06 18:47:27,280 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2025-02-06 18:47:27,281 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 350 flow [2025-02-06 18:47:27,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:27,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:27,281 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:27,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:47:27,281 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:47:27,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:27,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1893853202, now seen corresponding path program 1 times [2025-02-06 18:47:27,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:27,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616685280] [2025-02-06 18:47:27,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:27,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:27,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:47:27,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:47:27,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:27,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:27,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:27,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616685280] [2025-02-06 18:47:27,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616685280] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:27,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327814031] [2025-02-06 18:47:27,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:27,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:27,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:27,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:27,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:47:27,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:47:27,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:47:27,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:27,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:27,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:47:27,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:27,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:27,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327814031] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:27,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:27,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:47:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143471654] [2025-02-06 18:47:27,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:27,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:47:27,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:27,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:47:27,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:47:27,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-02-06 18:47:27,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 350 flow. Second operand has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:27,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:27,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-02-06 18:47:27,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:27,723 INFO L124 PetriNetUnfolderBase]: 355/1007 cut-off events. [2025-02-06 18:47:27,723 INFO L125 PetriNetUnfolderBase]: For 260/284 co-relation queries the response was YES. [2025-02-06 18:47:27,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1007 events. 355/1007 cut-off events. For 260/284 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6852 event pairs, 228 based on Foata normal form. 17/828 useless extension candidates. Maximal degree in co-relation 1776. Up to 549 conditions per place. [2025-02-06 18:47:27,727 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 31 selfloop transitions, 21 changer transitions 0/86 dead transitions. [2025-02-06 18:47:27,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 86 transitions, 434 flow [2025-02-06 18:47:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:47:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:47:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 298 transitions. [2025-02-06 18:47:27,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5912698412698413 [2025-02-06 18:47:27,728 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 350 flow. Second operand 7 states and 298 transitions. [2025-02-06 18:47:27,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 86 transitions, 434 flow [2025-02-06 18:47:27,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:47:27,731 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 372 flow [2025-02-06 18:47:27,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2025-02-06 18:47:27,731 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2025-02-06 18:47:27,731 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 372 flow [2025-02-06 18:47:27,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:27,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:27,732 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-06 18:47:27,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:27,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:27,936 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:47:27,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1577558890, now seen corresponding path program 2 times [2025-02-06 18:47:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:27,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122114816] [2025-02-06 18:47:27,936 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:47:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:27,943 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:47:27,946 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:47:27,946 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:47:27,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:47:27,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:27,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122114816] [2025-02-06 18:47:27,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122114816] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:27,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023539955] [2025-02-06 18:47:27,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:47:27,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:27,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:27,969 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:27,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:47:28,012 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:47:28,019 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:47:28,020 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:47:28,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:28,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:28,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:47:28,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:47:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023539955] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:28,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2025-02-06 18:47:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285990548] [2025-02-06 18:47:28,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:28,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:47:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:28,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:47:28,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:47:28,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-02-06 18:47:28,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:28,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:28,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-02-06 18:47:28,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:28,205 INFO L124 PetriNetUnfolderBase]: 355/1005 cut-off events. [2025-02-06 18:47:28,206 INFO L125 PetriNetUnfolderBase]: For 290/314 co-relation queries the response was YES. [2025-02-06 18:47:28,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 1005 events. 355/1005 cut-off events. For 290/314 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6840 event pairs, 228 based on Foata normal form. 15/825 useless extension candidates. Maximal degree in co-relation 1788. Up to 543 conditions per place. [2025-02-06 18:47:28,209 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 27 selfloop transitions, 23 changer transitions 0/84 dead transitions. [2025-02-06 18:47:28,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 452 flow [2025-02-06 18:47:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2025-02-06 18:47:28,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-02-06 18:47:28,210 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 372 flow. Second operand 4 states and 176 transitions. [2025-02-06 18:47:28,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 452 flow [2025-02-06 18:47:28,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 415 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-02-06 18:47:28,212 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 361 flow [2025-02-06 18:47:28,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2025-02-06 18:47:28,213 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 14 predicate places. [2025-02-06 18:47:28,213 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 361 flow [2025-02-06 18:47:28,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:28,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:28,213 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:28,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:28,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-06 18:47:28,418 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:47:28,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:28,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1784559118, now seen corresponding path program 2 times [2025-02-06 18:47:28,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:28,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464329712] [2025-02-06 18:47:28,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:47:28,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:28,427 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 18:47:28,438 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 18:47:28,438 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:47:28,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:47:28,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:28,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464329712] [2025-02-06 18:47:28,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464329712] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:28,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461829880] [2025-02-06 18:47:28,591 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:47:28,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:28,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:28,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:28,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:47:28,646 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 18:47:28,666 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 18:47:28,666 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:47:28,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:28,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:47:28,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:47:28,770 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:47:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461829880] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:28,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:28,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-02-06 18:47:28,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076136503] [2025-02-06 18:47:28,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:28,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:47:28,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:28,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:47:28,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:47:28,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-02-06 18:47:28,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 361 flow. Second operand has 23 states, 23 states have (on average 37.30434782608695) internal successors, (858), 23 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:28,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:28,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-02-06 18:47:28,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:29,139 INFO L124 PetriNetUnfolderBase]: 353/1005 cut-off events. [2025-02-06 18:47:29,140 INFO L125 PetriNetUnfolderBase]: For 286/310 co-relation queries the response was YES. [2025-02-06 18:47:29,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1860 conditions, 1005 events. 353/1005 cut-off events. For 286/310 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6793 event pairs, 228 based on Foata normal form. 17/828 useless extension candidates. Maximal degree in co-relation 1713. Up to 544 conditions per place. [2025-02-06 18:47:29,144 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 28 selfloop transitions, 22 changer transitions 0/84 dead transitions. [2025-02-06 18:47:29,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 84 transitions, 468 flow [2025-02-06 18:47:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 18:47:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 18:47:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 448 transitions. [2025-02-06 18:47:29,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2025-02-06 18:47:29,146 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 361 flow. Second operand 11 states and 448 transitions. [2025-02-06 18:47:29,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 84 transitions, 468 flow [2025-02-06 18:47:29,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:29,148 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 382 flow [2025-02-06 18:47:29,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=382, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2025-02-06 18:47:29,149 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2025-02-06 18:47:29,149 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 382 flow [2025-02-06 18:47:29,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 37.30434782608695) internal successors, (858), 23 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:29,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:29,150 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:29,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:29,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:29,351 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:47:29,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:29,351 INFO L85 PathProgramCache]: Analyzing trace with hash -548705234, now seen corresponding path program 3 times [2025-02-06 18:47:29,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:29,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290271886] [2025-02-06 18:47:29,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:47:29,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:29,362 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 6 equivalence classes. [2025-02-06 18:47:29,406 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:47:29,406 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 18:47:29,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 18:47:30,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290271886] [2025-02-06 18:47:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290271886] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169713515] [2025-02-06 18:47:30,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:47:30,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:30,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:30,226 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:30,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:47:30,275 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 6 equivalence classes. [2025-02-06 18:47:30,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:47:30,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 18:47:30,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:30,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-06 18:47:30,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:30,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:47:30,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 18:47:30,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-06 18:47:30,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 18:47:30,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-06 18:47:30,514 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2025-02-06 18:47:30,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2025-02-06 18:47:30,597 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2025-02-06 18:47:30,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2025-02-06 18:47:30,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 18:47:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 18:47:30,683 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:56,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2025-02-06 18:48:56,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6678 treesize of output 6646 [2025-02-06 18:48:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 18:48:56,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169713515] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:56,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:56,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2025-02-06 18:48:56,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896978932] [2025-02-06 18:48:56,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:56,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 18:48:56,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:56,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 18:48:56,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=991, Unknown=29, NotChecked=0, Total=1260 [2025-02-06 18:49:00,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 18:49:04,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 18:49:08,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]