./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 13:54:45,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 13:54:45,932 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 13:54:45,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 13:54:45,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 13:54:45,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 13:54:45,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 13:54:45,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 13:54:45,959 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 13:54:45,959 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 13:54:45,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 13:54:45,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 13:54:45,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 13:54:45,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 13:54:45,959 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 13:54:45,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 13:54:45,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 13:54:45,959 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 13:54:45,960 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:54:45,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 13:54:45,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 13:54:45,961 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 13:54:45,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 13:54:45,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 13:54:45,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 13:54:45,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 13:54:45,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 13:54:45,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 13:54:45,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 13:54:45,961 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 -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2025-02-08 13:54:46,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 13:54:46,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 13:54:46,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 13:54:46,172 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 13:54:46,172 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 13:54:46,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-02-08 13:54:47,296 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7a44780e7/4bffa5068581467f9e0e23674e0d290a/FLAG86365f21c [2025-02-08 13:54:47,545 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 13:54:47,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-02-08 13:54:47,553 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7a44780e7/4bffa5068581467f9e0e23674e0d290a/FLAG86365f21c [2025-02-08 13:54:47,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7a44780e7/4bffa5068581467f9e0e23674e0d290a [2025-02-08 13:54:47,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 13:54:47,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 13:54:47,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 13:54:47,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 13:54:47,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 13:54:47,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:54:47" (1/1) ... [2025-02-08 13:54:47,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@758f4670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:47, skipping insertion in model container [2025-02-08 13:54:47,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:54:47" (1/1) ... [2025-02-08 13:54:47,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 13:54:48,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:54:48,082 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 13:54:48,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:54:48,140 INFO L204 MainTranslator]: Completed translation [2025-02-08 13:54:48,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48 WrapperNode [2025-02-08 13:54:48,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 13:54:48,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 13:54:48,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 13:54:48,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 13:54:48,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,163 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2025-02-08 13:54:48,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 13:54:48,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 13:54:48,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 13:54:48,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 13:54:48,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,183 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 13:54:48,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,187 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 13:54:48,190 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 13:54:48,190 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 13:54:48,190 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 13:54:48,191 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (1/1) ... [2025-02-08 13:54:48,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:54:48,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:54:48,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 13:54:48,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 13:54:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-08 13:54:48,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-08 13:54:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 13:54:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 13:54:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 13:54:48,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 13:54:48,237 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 13:54:48,304 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 13:54:48,305 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 13:54:48,415 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 13:54:48,415 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 13:54:48,486 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 13:54:48,486 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 13:54:48,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:54:48 BoogieIcfgContainer [2025-02-08 13:54:48,487 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 13:54:48,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 13:54:48,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 13:54:48,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 13:54:48,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:54:47" (1/3) ... [2025-02-08 13:54:48,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445498aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:54:48, skipping insertion in model container [2025-02-08 13:54:48,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:48" (2/3) ... [2025-02-08 13:54:48,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445498aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:54:48, skipping insertion in model container [2025-02-08 13:54:48,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:54:48" (3/3) ... [2025-02-08 13:54:48,501 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2025-02-08 13:54:48,513 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 13:54:48,515 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 28 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2025-02-08 13:54:48,515 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 13:54:48,567 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:54:48,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 31 transitions, 66 flow [2025-02-08 13:54:48,621 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2025-02-08 13:54:48,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:54:48,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 33 events. 3/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2025-02-08 13:54:48,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 31 transitions, 66 flow [2025-02-08 13:54:48,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 31 transitions, 66 flow [2025-02-08 13:54:48,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:54:48,645 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;@211766f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:54:48,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-08 13:54:48,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:54:48,649 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-08 13:54:48,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:54:48,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:48,650 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 13:54:48,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 13:54:48,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:48,658 INFO L85 PathProgramCache]: Analyzing trace with hash 914663641, now seen corresponding path program 1 times [2025-02-08 13:54:48,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:48,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007512690] [2025-02-08 13:54:48,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:48,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:48,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:54:48,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:54:48,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:48,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:48,731 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:54:48,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:54:48,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:54:48,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:48,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:48,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:54:48,756 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:54:48,757 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-02-08 13:54:48,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-02-08 13:54:48,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-02-08 13:54:48,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-02-08 13:54:48,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-02-08 13:54:48,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-02-08 13:54:48,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 13:54:48,760 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-08 13:54:48,765 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:54:48,765 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 13:54:48,803 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:54:48,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 57 transitions, 124 flow [2025-02-08 13:54:48,827 INFO L124 PetriNetUnfolderBase]: 6/62 cut-off events. [2025-02-08 13:54:48,827 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 13:54:48,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 62 events. 6/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 188 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2025-02-08 13:54:48,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 57 transitions, 124 flow [2025-02-08 13:54:48,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 57 transitions, 124 flow [2025-02-08 13:54:48,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:54:48,833 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;@211766f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:54:48,833 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-02-08 13:54:48,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:54:48,837 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-02-08 13:54:48,837 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 13:54:48,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:48,837 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 13:54:48,837 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 13:54:48,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1693259476, now seen corresponding path program 1 times [2025-02-08 13:54:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:48,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888170791] [2025-02-08 13:54:48,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:48,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:54:48,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:54:48,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:48,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:48,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:48,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888170791] [2025-02-08 13:54:48,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888170791] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:48,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:48,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:54:48,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693514933] [2025-02-08 13:54:48,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:48,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:54:48,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:48,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:54:48,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:54:48,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 57 [2025-02-08 13:54:48,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:48,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:48,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 57 [2025-02-08 13:54:48,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:49,341 INFO L124 PetriNetUnfolderBase]: 942/2338 cut-off events. [2025-02-08 13:54:49,342 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2025-02-08 13:54:49,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3798 conditions, 2338 events. 942/2338 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17775 event pairs, 425 based on Foata normal form. 27/1961 useless extension candidates. Maximal degree in co-relation 2809. Up to 818 conditions per place. [2025-02-08 13:54:49,354 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 47 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2025-02-08 13:54:49,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 269 flow [2025-02-08 13:54:49,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:54:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:54:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2025-02-08 13:54:49,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8187134502923976 [2025-02-08 13:54:49,367 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 124 flow. Second operand 3 states and 140 transitions. [2025-02-08 13:54:49,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 269 flow [2025-02-08 13:54:49,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 269 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:54:49,373 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 136 flow [2025-02-08 13:54:49,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2025-02-08 13:54:49,380 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2025-02-08 13:54:49,381 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 136 flow [2025-02-08 13:54:49,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:49,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:49,382 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-02-08 13:54:49,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 13:54:49,382 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 13:54:49,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash -764654556, now seen corresponding path program 1 times [2025-02-08 13:54:49,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:49,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879389845] [2025-02-08 13:54:49,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:49,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:49,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 13:54:49,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 13:54:49,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:49,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:49,409 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:54:49,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 13:54:49,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 13:54:49,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:49,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:49,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:54:49,420 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2025-02-08 13:54:49,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2025-02-08 13:54:49,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2025-02-08 13:54:49,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2025-02-08 13:54:49,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2025-02-08 13:54:49,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2025-02-08 13:54:49,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2025-02-08 13:54:49,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2025-02-08 13:54:49,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2025-02-08 13:54:49,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2025-02-08 13:54:49,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2025-02-08 13:54:49,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 13:54:49,421 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 13:54:49,421 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:54:49,421 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 13:54:49,458 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:54:49,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 184 flow [2025-02-08 13:54:49,468 INFO L124 PetriNetUnfolderBase]: 9/91 cut-off events. [2025-02-08 13:54:49,468 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-08 13:54:49,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 9/91 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 330 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2025-02-08 13:54:49,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 184 flow [2025-02-08 13:54:49,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 83 transitions, 184 flow [2025-02-08 13:54:49,470 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:54:49,471 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;@211766f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:54:49,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-02-08 13:54:49,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:54:49,472 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-02-08 13:54:49,472 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 13:54:49,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:49,473 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 13:54:49,473 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 13:54:49,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:49,473 INFO L85 PathProgramCache]: Analyzing trace with hash 762912147, now seen corresponding path program 1 times [2025-02-08 13:54:49,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:49,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641413154] [2025-02-08 13:54:49,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:49,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:49,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:54:49,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:54:49,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:49,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:49,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641413154] [2025-02-08 13:54:49,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641413154] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:49,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:49,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:54:49,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128056220] [2025-02-08 13:54:49,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:49,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:54:49,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:49,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:54:49,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:54:49,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 83 [2025-02-08 13:54:49,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:49,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:49,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 83 [2025-02-08 13:54:49,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:51,065 INFO L124 PetriNetUnfolderBase]: 12182/24536 cut-off events. [2025-02-08 13:54:51,066 INFO L125 PetriNetUnfolderBase]: For 902/902 co-relation queries the response was YES. [2025-02-08 13:54:51,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41045 conditions, 24536 events. 12182/24536 cut-off events. For 902/902 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 238442 event pairs, 5892 based on Foata normal form. 219/20515 useless extension candidates. Maximal degree in co-relation 21981. Up to 9282 conditions per place. [2025-02-08 13:54:51,219 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 69 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2025-02-08 13:54:51,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 115 transitions, 402 flow [2025-02-08 13:54:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:54:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:54:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2025-02-08 13:54:51,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8313253012048193 [2025-02-08 13:54:51,222 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 184 flow. Second operand 3 states and 207 transitions. [2025-02-08 13:54:51,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 115 transitions, 402 flow [2025-02-08 13:54:51,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 398 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-02-08 13:54:51,226 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 194 flow [2025-02-08 13:54:51,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2025-02-08 13:54:51,228 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2025-02-08 13:54:51,228 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 194 flow [2025-02-08 13:54:51,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:51,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:51,229 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:51,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 13:54:51,229 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 13:54:51,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1982205987, now seen corresponding path program 1 times [2025-02-08 13:54:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:51,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144026953] [2025-02-08 13:54:51,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:51,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:51,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 13:54:51,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 13:54:51,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:51,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:51,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144026953] [2025-02-08 13:54:51,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144026953] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:51,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:51,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:54:51,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391655568] [2025-02-08 13:54:51,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:51,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:54:51,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:51,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:54:51,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:54:51,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 83 [2025-02-08 13:54:51,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:51,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:51,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 83 [2025-02-08 13:54:51,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:53,547 INFO L124 PetriNetUnfolderBase]: 22894/44335 cut-off events. [2025-02-08 13:54:53,547 INFO L125 PetriNetUnfolderBase]: For 3299/3299 co-relation queries the response was YES. [2025-02-08 13:54:53,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76864 conditions, 44335 events. 22894/44335 cut-off events. For 3299/3299 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 444081 event pairs, 10183 based on Foata normal form. 405/37553 useless extension candidates. Maximal degree in co-relation 61881. Up to 17446 conditions per place. [2025-02-08 13:54:53,812 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 70 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2025-02-08 13:54:53,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 116 transitions, 417 flow [2025-02-08 13:54:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:54:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:54:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2025-02-08 13:54:53,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2025-02-08 13:54:53,814 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 194 flow. Second operand 3 states and 204 transitions. [2025-02-08 13:54:53,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 116 transitions, 417 flow [2025-02-08 13:54:53,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 116 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:54:53,823 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 206 flow [2025-02-08 13:54:53,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2025-02-08 13:54:53,824 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2025-02-08 13:54:53,824 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 206 flow [2025-02-08 13:54:53,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:53,825 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:53,825 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:53,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 13:54:53,826 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 13:54:53,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1050863207, now seen corresponding path program 1 times [2025-02-08 13:54:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908057827] [2025-02-08 13:54:53,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:53,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:53,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 13:54:53,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 13:54:53,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:53,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:53,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908057827] [2025-02-08 13:54:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908057827] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:53,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:53,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:54:53,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323638815] [2025-02-08 13:54:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:53,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:54:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:53,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:54:53,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:54:53,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 83 [2025-02-08 13:54:53,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:53,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:53,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 83 [2025-02-08 13:54:53,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:56,338 INFO L124 PetriNetUnfolderBase]: 25402/46888 cut-off events. [2025-02-08 13:54:56,338 INFO L125 PetriNetUnfolderBase]: For 5546/5546 co-relation queries the response was YES. [2025-02-08 13:54:56,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85208 conditions, 46888 events. 25402/46888 cut-off events. For 5546/5546 co-relation queries the response was YES. Maximal size of possible extension queue 1825. Compared 453739 event pairs, 11365 based on Foata normal form. 816/41172 useless extension candidates. Maximal degree in co-relation 38557. Up to 20728 conditions per place. [2025-02-08 13:54:56,569 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 97 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2025-02-08 13:54:56,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 142 transitions, 558 flow [2025-02-08 13:54:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:54:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:54:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2025-02-08 13:54:56,574 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8042168674698795 [2025-02-08 13:54:56,575 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 206 flow. Second operand 4 states and 267 transitions. [2025-02-08 13:54:56,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 142 transitions, 558 flow [2025-02-08 13:54:56,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 142 transitions, 552 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:54:56,579 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 222 flow [2025-02-08 13:54:56,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2025-02-08 13:54:56,581 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2025-02-08 13:54:56,581 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 222 flow [2025-02-08 13:54:56,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:56,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:56,582 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:56,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 13:54:56,582 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 13:54:56,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1782980314, now seen corresponding path program 1 times [2025-02-08 13:54:56,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:56,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261758543] [2025-02-08 13:54:56,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:56,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:54:56,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:54:56,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:56,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:56,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:56,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261758543] [2025-02-08 13:54:56,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261758543] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:56,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:56,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 13:54:56,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309040449] [2025-02-08 13:54:56,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:56,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:54:56,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:56,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:54:56,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:54:56,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 83 [2025-02-08 13:54:56,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:56,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:56,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 83 [2025-02-08 13:54:56,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:59,499 INFO L124 PetriNetUnfolderBase]: 31657/52673 cut-off events. [2025-02-08 13:54:59,499 INFO L125 PetriNetUnfolderBase]: For 9634/9634 co-relation queries the response was YES. [2025-02-08 13:54:59,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103322 conditions, 52673 events. 31657/52673 cut-off events. For 9634/9634 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 450825 event pairs, 10384 based on Foata normal form. 408/47814 useless extension candidates. Maximal degree in co-relation 55305. Up to 19069 conditions per place. [2025-02-08 13:54:59,821 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 149 selfloop transitions, 6 changer transitions 0/197 dead transitions. [2025-02-08 13:54:59,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 197 transitions, 824 flow [2025-02-08 13:54:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:54:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:54:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2025-02-08 13:54:59,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8092369477911646 [2025-02-08 13:54:59,823 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 222 flow. Second operand 6 states and 403 transitions. [2025-02-08 13:54:59,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 197 transitions, 824 flow [2025-02-08 13:54:59,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 197 transitions, 820 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:54:59,862 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 259 flow [2025-02-08 13:54:59,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=259, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2025-02-08 13:54:59,863 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 15 predicate places. [2025-02-08 13:54:59,864 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 259 flow [2025-02-08 13:54:59,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:59,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:59,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:59,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 13:54:59,865 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 13:54:59,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash -562185795, now seen corresponding path program 1 times [2025-02-08 13:54:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:59,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021181314] [2025-02-08 13:54:59,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:59,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:59,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 13:54:59,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 13:54:59,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:59,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021181314] [2025-02-08 13:54:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021181314] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:59,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 13:54:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765723048] [2025-02-08 13:54:59,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:59,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:54:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:59,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:54:59,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 13:54:59,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2025-02-08 13:54:59,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 42.333333333333336) internal successors, (254), 6 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:59,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:59,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2025-02-08 13:54:59,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:55:04,367 INFO L124 PetriNetUnfolderBase]: 48301/79666 cut-off events. [2025-02-08 13:55:04,368 INFO L125 PetriNetUnfolderBase]: For 27159/27159 co-relation queries the response was YES. [2025-02-08 13:55:04,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169000 conditions, 79666 events. 48301/79666 cut-off events. For 27159/27159 co-relation queries the response was YES. Maximal size of possible extension queue 2740. Compared 716119 event pairs, 15289 based on Foata normal form. 816/72405 useless extension candidates. Maximal degree in co-relation 105999. Up to 28180 conditions per place. [2025-02-08 13:55:04,876 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 206 selfloop transitions, 12 changer transitions 0/260 dead transitions. [2025-02-08 13:55:04,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 260 transitions, 1173 flow [2025-02-08 13:55:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 13:55:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 13:55:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 542 transitions. [2025-02-08 13:55:04,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8162650602409639 [2025-02-08 13:55:04,878 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 259 flow. Second operand 8 states and 542 transitions. [2025-02-08 13:55:04,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 260 transitions, 1173 flow [2025-02-08 13:55:05,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 260 transitions, 1173 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:55:05,310 INFO L231 Difference]: Finished difference. Result has 108 places, 99 transitions, 359 flow [2025-02-08 13:55:05,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=359, PETRI_PLACES=108, PETRI_TRANSITIONS=99} [2025-02-08 13:55:05,310 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 27 predicate places. [2025-02-08 13:55:05,310 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 99 transitions, 359 flow [2025-02-08 13:55:05,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.333333333333336) internal successors, (254), 6 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:55:05,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:55:05,311 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:55:05,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 13:55:05,311 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 13:55:05,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:55:05,311 INFO L85 PathProgramCache]: Analyzing trace with hash -562184802, now seen corresponding path program 1 times [2025-02-08 13:55:05,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:55:05,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736305049] [2025-02-08 13:55:05,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:55:05,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:55:05,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 13:55:05,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 13:55:05,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:05,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:55:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:55:05,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:55:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736305049] [2025-02-08 13:55:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736305049] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:55:05,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:55:05,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 13:55:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204255557] [2025-02-08 13:55:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:55:05,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:55:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:55:05,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:55:05,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:55:05,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 83 [2025-02-08 13:55:05,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 99 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:55:05,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:55:05,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 83 [2025-02-08 13:55:05,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:55:10,419 INFO L124 PetriNetUnfolderBase]: 50803/83218 cut-off events. [2025-02-08 13:55:10,419 INFO L125 PetriNetUnfolderBase]: For 60372/60372 co-relation queries the response was YES. [2025-02-08 13:55:10,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192183 conditions, 83218 events. 50803/83218 cut-off events. For 60372/60372 co-relation queries the response was YES. Maximal size of possible extension queue 2739. Compared 743428 event pairs, 14308 based on Foata normal form. 408/77601 useless extension candidates. Maximal degree in co-relation 183957. Up to 26521 conditions per place. [2025-02-08 13:55:11,233 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 183 selfloop transitions, 8 changer transitions 0/234 dead transitions. [2025-02-08 13:55:11,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 234 transitions, 1113 flow [2025-02-08 13:55:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 13:55:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 13:55:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2025-02-08 13:55:11,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2025-02-08 13:55:11,235 INFO L175 Difference]: Start difference. First operand has 108 places, 99 transitions, 359 flow. Second operand 7 states and 476 transitions. [2025-02-08 13:55:11,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 234 transitions, 1113 flow [2025-02-08 13:55:12,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 234 transitions, 1113 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:55:12,030 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 400 flow [2025-02-08 13:55:12,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2025-02-08 13:55:12,030 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2025-02-08 13:55:12,030 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 400 flow [2025-02-08 13:55:12,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:55:12,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:55:12,031 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-02-08 13:55:12,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 13:55:12,031 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 13:55:12,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:55:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1607995112, now seen corresponding path program 1 times [2025-02-08 13:55:12,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:55:12,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310050639] [2025-02-08 13:55:12,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:55:12,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:55:12,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:55:12,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:55:12,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:12,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:55:12,037 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:55:12,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:55:12,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:55:12,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:12,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:55:12,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:55:12,044 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 33 remaining) [2025-02-08 13:55:12,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 33 remaining) [2025-02-08 13:55:12,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 33 remaining) [2025-02-08 13:55:12,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 13:55:12,045 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:55:12,046 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:55:12,046 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-08 13:55:12,077 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:55:12,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 109 transitions, 246 flow [2025-02-08 13:55:12,086 INFO L124 PetriNetUnfolderBase]: 12/120 cut-off events. [2025-02-08 13:55:12,086 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-08 13:55:12,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 120 events. 12/120 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 457 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 103. Up to 5 conditions per place. [2025-02-08 13:55:12,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 109 transitions, 246 flow [2025-02-08 13:55:12,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 109 transitions, 246 flow [2025-02-08 13:55:12,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:55:12,092 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;@211766f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:55:12,093 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-02-08 13:55:12,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:55:12,094 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-02-08 13:55:12,094 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 13:55:12,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:55:12,094 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 13:55:12,094 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 13:55:12,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:55:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash -306688845, now seen corresponding path program 1 times [2025-02-08 13:55:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:55:12,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277050874] [2025-02-08 13:55:12,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:55:12,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:55:12,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:55:12,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:55:12,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:12,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:55:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:55:12,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:55:12,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277050874] [2025-02-08 13:55:12,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277050874] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:55:12,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:55:12,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:55:12,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077946181] [2025-02-08 13:55:12,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:55:12,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:55:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:55:12,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:55:12,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:55:12,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 109 [2025-02-08 13:55:12,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 109 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:55:12,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:55:12,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 109 [2025-02-08 13:55:12,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand