./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_safe-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/fib_safe-12.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:19:46,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:19:46,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:19:46,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:19:46,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:19:46,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:19:46,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:19:46,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:19:46,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:19:46,814 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:19:46,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:19:46,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:19:46,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:19:46,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:19:46,814 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:19:46,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:19:46,815 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:19:46,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:19:46,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:19:46,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:19:46,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:19:46,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:19:46,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:19:46,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:19:46,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:19:46,816 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 [2025-03-09 06:19:47,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:19:47,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:19:47,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:19:47,029 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:19:47,029 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:19:47,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-12.i [2025-03-09 06:19:48,214 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db331cef/19c6dc4743b04e67ad50d9bcfeea5e5d/FLAGa45b3357a [2025-03-09 06:19:48,485 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:19:48,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-12.i [2025-03-09 06:19:48,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db331cef/19c6dc4743b04e67ad50d9bcfeea5e5d/FLAGa45b3357a [2025-03-09 06:19:48,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db331cef/19c6dc4743b04e67ad50d9bcfeea5e5d [2025-03-09 06:19:48,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:19:48,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:19:48,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:19:48,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:19:48,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:19:48,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76190fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48, skipping insertion in model container [2025-03-09 06:19:48,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:19:48,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:19:48,794 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:19:48,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:19:48,856 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:19:48,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48 WrapperNode [2025-03-09 06:19:48,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:19:48,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:19:48,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:19:48,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:19:48,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,880 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-03-09 06:19:48,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:19:48,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:19:48,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:19:48,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:19:48,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,905 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]. [2025-03-09 06:19:48,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,910 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:19:48,916 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:19:48,916 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:19:48,916 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:19:48,916 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (1/1) ... [2025-03-09 06:19:48,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:19:48,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:48,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:19:48,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 06:19:48,958 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 06:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 06:19:48,958 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 06:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:19:48,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:19:48,959 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:19:49,037 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:19:49,038 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:19:49,195 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:19:49,195 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:19:49,269 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:19:49,269 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:19:49,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:19:49 BoogieIcfgContainer [2025-03-09 06:19:49,270 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:19:49,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:19:49,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:19:49,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:19:49,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:19:48" (1/3) ... [2025-03-09 06:19:49,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543ed265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:19:49, skipping insertion in model container [2025-03-09 06:19:49,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:48" (2/3) ... [2025-03-09 06:19:49,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543ed265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:19:49, skipping insertion in model container [2025-03-09 06:19:49,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:19:49" (3/3) ... [2025-03-09 06:19:49,276 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_safe-12.i [2025-03-09 06:19:49,287 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:19:49,289 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-12.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-03-09 06:19:49,290 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:19:49,331 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:19:49,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2025-03-09 06:19:49,393 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2025-03-09 06:19:49,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:19:49,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 120 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-03-09 06:19:49,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2025-03-09 06:19:49,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2025-03-09 06:19:49,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:19:49,419 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;@3611a52e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:19:49,419 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-09 06:19:49,424 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:19:49,424 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:19:49,424 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:19:49,424 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:49,426 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:49,427 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:49,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash 575390525, now seen corresponding path program 1 times [2025-03-09 06:19:49,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:49,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158316348] [2025-03-09 06:19:49,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:49,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:49,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:19:49,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:19:49,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:49,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:49,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:49,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158316348] [2025-03-09 06:19:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158316348] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195508896] [2025-03-09 06:19:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:49,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:49,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:49,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:49,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:49,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:49,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:49,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:49,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:49,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:50,009 INFO L124 PetriNetUnfolderBase]: 785/1522 cut-off events. [2025-03-09 06:19:50,010 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:19:50,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2733 conditions, 1522 events. 785/1522 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9427 event pairs, 188 based on Foata normal form. 0/1146 useless extension candidates. Maximal degree in co-relation 2717. Up to 612 conditions per place. [2025-03-09 06:19:50,031 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 49 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2025-03-09 06:19:50,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 259 flow [2025-03-09 06:19:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2025-03-09 06:19:50,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2025-03-09 06:19:50,044 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 134 transitions. [2025-03-09 06:19:50,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 259 flow [2025-03-09 06:19:50,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:50,051 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-03-09 06:19:50,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2025-03-09 06:19:50,055 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-03-09 06:19:50,055 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-03-09 06:19:50,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:50,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:50,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:50,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:19:50,056 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:50,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:50,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1129395496, now seen corresponding path program 1 times [2025-03-09 06:19:50,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:50,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427702904] [2025-03-09 06:19:50,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:50,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:50,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:19:50,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:19:50,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:50,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:50,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427702904] [2025-03-09 06:19:50,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427702904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:50,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:50,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:19:50,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503097913] [2025-03-09 06:19:50,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:50,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:19:50,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:50,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:19:50,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:19:50,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:50,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:50,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:50,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:50,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:50,418 INFO L124 PetriNetUnfolderBase]: 1425/2717 cut-off events. [2025-03-09 06:19:50,419 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2025-03-09 06:19:50,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 2717 events. 1425/2717 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19076 event pairs, 486 based on Foata normal form. 53/2299 useless extension candidates. Maximal degree in co-relation 5707. Up to 1217 conditions per place. [2025-03-09 06:19:50,437 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 46 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2025-03-09 06:19:50,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 273 flow [2025-03-09 06:19:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:19:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:19:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-09 06:19:50,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-09 06:19:50,439 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 97 transitions. [2025-03-09 06:19:50,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 273 flow [2025-03-09 06:19:50,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:19:50,441 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2025-03-09 06:19:50,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2025-03-09 06:19:50,442 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-03-09 06:19:50,442 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2025-03-09 06:19:50,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:50,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:50,443 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:50,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:19:50,443 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:50,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:50,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1100476575, now seen corresponding path program 1 times [2025-03-09 06:19:50,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:50,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599314730] [2025-03-09 06:19:50,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:50,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:50,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:19:50,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:19:50,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:50,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:50,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:50,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599314730] [2025-03-09 06:19:50,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599314730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:50,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:50,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:50,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48642376] [2025-03-09 06:19:50,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:50,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:50,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:50,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:50,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:50,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:50,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:50,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:50,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:50,798 INFO L124 PetriNetUnfolderBase]: 1745/3008 cut-off events. [2025-03-09 06:19:50,799 INFO L125 PetriNetUnfolderBase]: For 544/594 co-relation queries the response was YES. [2025-03-09 06:19:50,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6811 conditions, 3008 events. 1745/3008 cut-off events. For 544/594 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18988 event pairs, 453 based on Foata normal form. 144/2630 useless extension candidates. Maximal degree in co-relation 6790. Up to 1535 conditions per place. [2025-03-09 06:19:50,813 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 63 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2025-03-09 06:19:50,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 361 flow [2025-03-09 06:19:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-03-09 06:19:50,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-09 06:19:50,814 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 128 transitions. [2025-03-09 06:19:50,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 361 flow [2025-03-09 06:19:50,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:19:50,817 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2025-03-09 06:19:50,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2025-03-09 06:19:50,817 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2025-03-09 06:19:50,818 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2025-03-09 06:19:50,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:50,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:50,818 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:50,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:19:50,818 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:50,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:50,819 INFO L85 PathProgramCache]: Analyzing trace with hash -651521824, now seen corresponding path program 1 times [2025-03-09 06:19:50,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:50,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771319284] [2025-03-09 06:19:50,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:50,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:50,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:19:50,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:19:50,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:50,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:50,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:50,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771319284] [2025-03-09 06:19:50,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771319284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:50,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:50,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:19:50,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426018500] [2025-03-09 06:19:50,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:50,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:19:50,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:50,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:19:50,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:19:50,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:50,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:50,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:50,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:50,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:51,038 INFO L124 PetriNetUnfolderBase]: 1381/2582 cut-off events. [2025-03-09 06:19:51,039 INFO L125 PetriNetUnfolderBase]: For 724/910 co-relation queries the response was YES. [2025-03-09 06:19:51,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5976 conditions, 2582 events. 1381/2582 cut-off events. For 724/910 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17917 event pairs, 468 based on Foata normal form. 102/2213 useless extension candidates. Maximal degree in co-relation 5952. Up to 1179 conditions per place. [2025-03-09 06:19:51,054 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 48 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2025-03-09 06:19:51,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 318 flow [2025-03-09 06:19:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:19:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:19:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-09 06:19:51,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-09 06:19:51,056 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 97 transitions. [2025-03-09 06:19:51,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 318 flow [2025-03-09 06:19:51,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:19:51,059 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2025-03-09 06:19:51,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2025-03-09 06:19:51,060 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-03-09 06:19:51,060 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2025-03-09 06:19:51,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:51,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:51,060 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:51,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:19:51,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:51,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1304196917, now seen corresponding path program 1 times [2025-03-09 06:19:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:51,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54563411] [2025-03-09 06:19:51,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:51,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:51,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:19:51,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:19:51,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:51,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:51,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54563411] [2025-03-09 06:19:51,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54563411] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:51,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:51,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:51,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110492985] [2025-03-09 06:19:51,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:51,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:51,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:51,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:51,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:51,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:51,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:51,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:51,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:51,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:51,441 INFO L124 PetriNetUnfolderBase]: 2577/4479 cut-off events. [2025-03-09 06:19:51,441 INFO L125 PetriNetUnfolderBase]: For 1559/2051 co-relation queries the response was YES. [2025-03-09 06:19:51,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10688 conditions, 4479 events. 2577/4479 cut-off events. For 1559/2051 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 30852 event pairs, 577 based on Foata normal form. 317/4073 useless extension candidates. Maximal degree in co-relation 10662. Up to 2501 conditions per place. [2025-03-09 06:19:51,470 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2025-03-09 06:19:51,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 413 flow [2025-03-09 06:19:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-09 06:19:51,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-09 06:19:51,473 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 124 transitions. [2025-03-09 06:19:51,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 413 flow [2025-03-09 06:19:51,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:51,475 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2025-03-09 06:19:51,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2025-03-09 06:19:51,476 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-03-09 06:19:51,476 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2025-03-09 06:19:51,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:51,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:51,476 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:51,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:19:51,477 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:51,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1277660195, now seen corresponding path program 1 times [2025-03-09 06:19:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:51,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056719667] [2025-03-09 06:19:51,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:51,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:19:51,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:19:51,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:51,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:51,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056719667] [2025-03-09 06:19:51,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056719667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:51,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:51,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:51,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243549537] [2025-03-09 06:19:51,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:51,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:51,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:51,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:51,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:51,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:51,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:51,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:51,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:51,818 INFO L124 PetriNetUnfolderBase]: 1777/3395 cut-off events. [2025-03-09 06:19:51,818 INFO L125 PetriNetUnfolderBase]: For 1293/1827 co-relation queries the response was YES. [2025-03-09 06:19:51,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8347 conditions, 3395 events. 1777/3395 cut-off events. For 1293/1827 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 24843 event pairs, 227 based on Foata normal form. 355/3109 useless extension candidates. Maximal degree in co-relation 8319. Up to 1937 conditions per place. [2025-03-09 06:19:51,838 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2025-03-09 06:19:51,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 451 flow [2025-03-09 06:19:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-09 06:19:51,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-09 06:19:51,839 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 124 transitions. [2025-03-09 06:19:51,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 451 flow [2025-03-09 06:19:51,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:19:51,842 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2025-03-09 06:19:51,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2025-03-09 06:19:51,842 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-03-09 06:19:51,842 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2025-03-09 06:19:51,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:51,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:51,843 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:51,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:19:51,843 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:51,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1749870056, now seen corresponding path program 1 times [2025-03-09 06:19:51,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:51,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680156284] [2025-03-09 06:19:51,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:51,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:51,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:51,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:51,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:51,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:51,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:51,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680156284] [2025-03-09 06:19:51,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680156284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:51,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:51,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:51,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752712252] [2025-03-09 06:19:51,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:51,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:51,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:51,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:51,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:51,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:51,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:51,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:51,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:52,120 INFO L124 PetriNetUnfolderBase]: 1279/2491 cut-off events. [2025-03-09 06:19:52,120 INFO L125 PetriNetUnfolderBase]: For 1526/1863 co-relation queries the response was YES. [2025-03-09 06:19:52,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 2491 events. 1279/2491 cut-off events. For 1526/1863 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16934 event pairs, 183 based on Foata normal form. 40/2168 useless extension candidates. Maximal degree in co-relation 6711. Up to 954 conditions per place. [2025-03-09 06:19:52,131 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2025-03-09 06:19:52,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 513 flow [2025-03-09 06:19:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:52,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-03-09 06:19:52,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-09 06:19:52,132 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 160 transitions. [2025-03-09 06:19:52,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 513 flow [2025-03-09 06:19:52,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 503 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:52,136 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2025-03-09 06:19:52,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2025-03-09 06:19:52,137 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2025-03-09 06:19:52,137 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2025-03-09 06:19:52,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:52,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:52,137 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:52,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:19:52,138 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:52,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:52,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1115148775, now seen corresponding path program 1 times [2025-03-09 06:19:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:52,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795727621] [2025-03-09 06:19:52,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:52,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:52,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:52,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:52,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:52,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:52,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:52,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795727621] [2025-03-09 06:19:52,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795727621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:52,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:52,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416296769] [2025-03-09 06:19:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:52,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:52,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:52,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:52,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:52,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:52,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:52,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:52,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:52,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:52,412 INFO L124 PetriNetUnfolderBase]: 1331/2637 cut-off events. [2025-03-09 06:19:52,413 INFO L125 PetriNetUnfolderBase]: For 1957/2223 co-relation queries the response was YES. [2025-03-09 06:19:52,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7445 conditions, 2637 events. 1331/2637 cut-off events. For 1957/2223 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18315 event pairs, 255 based on Foata normal form. 82/2540 useless extension candidates. Maximal degree in co-relation 7412. Up to 1260 conditions per place. [2025-03-09 06:19:52,426 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2025-03-09 06:19:52,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 534 flow [2025-03-09 06:19:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-03-09 06:19:52,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2025-03-09 06:19:52,429 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 161 transitions. [2025-03-09 06:19:52,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 534 flow [2025-03-09 06:19:52,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:19:52,434 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2025-03-09 06:19:52,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2025-03-09 06:19:52,435 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2025-03-09 06:19:52,436 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2025-03-09 06:19:52,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:52,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:52,437 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:52,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:19:52,437 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:52,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810856, now seen corresponding path program 1 times [2025-03-09 06:19:52,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:52,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343324223] [2025-03-09 06:19:52,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:52,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:52,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:52,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:52,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:52,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:52,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:52,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343324223] [2025-03-09 06:19:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343324223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:52,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:52,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142221469] [2025-03-09 06:19:52,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:52,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:52,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:52,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:52,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:52,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:52,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:52,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:52,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:52,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:52,719 INFO L124 PetriNetUnfolderBase]: 1187/2365 cut-off events. [2025-03-09 06:19:52,719 INFO L125 PetriNetUnfolderBase]: For 2368/2607 co-relation queries the response was YES. [2025-03-09 06:19:52,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6984 conditions, 2365 events. 1187/2365 cut-off events. For 2368/2607 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16128 event pairs, 303 based on Foata normal form. 80/2290 useless extension candidates. Maximal degree in co-relation 6950. Up to 1384 conditions per place. [2025-03-09 06:19:52,732 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 56 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2025-03-09 06:19:52,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 464 flow [2025-03-09 06:19:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-03-09 06:19:52,734 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6636363636363637 [2025-03-09 06:19:52,734 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 146 transitions. [2025-03-09 06:19:52,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 464 flow [2025-03-09 06:19:52,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 449 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-09 06:19:52,738 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2025-03-09 06:19:52,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2025-03-09 06:19:52,738 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2025-03-09 06:19:52,738 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2025-03-09 06:19:52,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:52,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:52,739 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:52,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:19:52,739 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:52,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810855, now seen corresponding path program 1 times [2025-03-09 06:19:52,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:52,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113133544] [2025-03-09 06:19:52,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:52,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:52,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:52,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:52,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:52,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:52,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:52,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113133544] [2025-03-09 06:19:52,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113133544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:52,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:52,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:52,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155735516] [2025-03-09 06:19:52,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:52,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:52,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:52,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:52,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:52,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:52,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:52,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:52,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:52,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:53,064 INFO L124 PetriNetUnfolderBase]: 1235/2453 cut-off events. [2025-03-09 06:19:53,064 INFO L125 PetriNetUnfolderBase]: For 2793/3041 co-relation queries the response was YES. [2025-03-09 06:19:53,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 2453 events. 1235/2453 cut-off events. For 2793/3041 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16657 event pairs, 295 based on Foata normal form. 80/2434 useless extension candidates. Maximal degree in co-relation 7276. Up to 1400 conditions per place. [2025-03-09 06:19:53,080 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 66 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2025-03-09 06:19:53,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 538 flow [2025-03-09 06:19:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2025-03-09 06:19:53,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7136363636363636 [2025-03-09 06:19:53,082 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 157 transitions. [2025-03-09 06:19:53,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 538 flow [2025-03-09 06:19:53,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 524 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:19:53,087 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2025-03-09 06:19:53,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2025-03-09 06:19:53,087 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-09 06:19:53,088 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2025-03-09 06:19:53,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:53,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:53,088 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:53,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:19:53,088 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:53,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:53,088 INFO L85 PathProgramCache]: Analyzing trace with hash 774894829, now seen corresponding path program 1 times [2025-03-09 06:19:53,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:53,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714455375] [2025-03-09 06:19:53,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:53,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:53,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:53,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:53,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:53,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714455375] [2025-03-09 06:19:53,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714455375] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:53,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559216796] [2025-03-09 06:19:53,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:53,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:53,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:19:53,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:19:53,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:53,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:53,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:19:53,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:53,303 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:53,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559216796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:53,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:53,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-09 06:19:53,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832182651] [2025-03-09 06:19:53,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:53,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:53,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:53,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:53,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:19:53,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:53,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:53,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:53,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:53,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:53,486 INFO L124 PetriNetUnfolderBase]: 1235/2574 cut-off events. [2025-03-09 06:19:53,487 INFO L125 PetriNetUnfolderBase]: For 4215/4546 co-relation queries the response was YES. [2025-03-09 06:19:53,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7678 conditions, 2574 events. 1235/2574 cut-off events. For 4215/4546 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 18608 event pairs, 187 based on Foata normal form. 188/2677 useless extension candidates. Maximal degree in co-relation 7643. Up to 1444 conditions per place. [2025-03-09 06:19:53,500 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-03-09 06:19:53,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 515 flow [2025-03-09 06:19:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-09 06:19:53,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-03-09 06:19:53,502 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 111 transitions. [2025-03-09 06:19:53,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 515 flow [2025-03-09 06:19:53,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 495 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:53,506 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2025-03-09 06:19:53,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2025-03-09 06:19:53,507 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-09 06:19:53,507 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2025-03-09 06:19:53,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:53,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:53,507 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:53,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:19:53,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-09 06:19:53,712 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:53,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1305596489, now seen corresponding path program 1 times [2025-03-09 06:19:53,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982750572] [2025-03-09 06:19:53,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:53,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:53,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:53,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:53,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:53,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982750572] [2025-03-09 06:19:53,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982750572] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:53,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812487425] [2025-03-09 06:19:53,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:53,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:53,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:19:53,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:19:53,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:53,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:53,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:53,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:53,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812487425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:53,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:53,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062812076] [2025-03-09 06:19:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:53,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:53,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:53,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:53,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:53,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:53,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:53,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:53,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:54,101 INFO L124 PetriNetUnfolderBase]: 1657/2934 cut-off events. [2025-03-09 06:19:54,101 INFO L125 PetriNetUnfolderBase]: For 4829/5215 co-relation queries the response was YES. [2025-03-09 06:19:54,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 2934 events. 1657/2934 cut-off events. For 4829/5215 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19080 event pairs, 359 based on Foata normal form. 154/2976 useless extension candidates. Maximal degree in co-relation 9313. Up to 1194 conditions per place. [2025-03-09 06:19:54,119 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2025-03-09 06:19:54,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 696 flow [2025-03-09 06:19:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:54,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-03-09 06:19:54,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-03-09 06:19:54,121 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 170 transitions. [2025-03-09 06:19:54,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 696 flow [2025-03-09 06:19:54,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 109 transitions, 690 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:54,128 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2025-03-09 06:19:54,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2025-03-09 06:19:54,129 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2025-03-09 06:19:54,129 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2025-03-09 06:19:54,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:54,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:54,129 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:54,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:19:54,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-09 06:19:54,330 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:54,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1748063893, now seen corresponding path program 1 times [2025-03-09 06:19:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:54,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022256203] [2025-03-09 06:19:54,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:54,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:54,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:54,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:54,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022256203] [2025-03-09 06:19:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022256203] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745208632] [2025-03-09 06:19:54,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:54,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:54,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:19:54,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:19:54,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:54,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:54,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:19:54,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:54,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:54,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745208632] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:54,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:54,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-03-09 06:19:54,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824605538] [2025-03-09 06:19:54,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:54,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:19:54,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:54,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:19:54,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:54,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:54,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:54,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:54,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:54,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:55,002 INFO L124 PetriNetUnfolderBase]: 3515/6816 cut-off events. [2025-03-09 06:19:55,002 INFO L125 PetriNetUnfolderBase]: For 12491/13229 co-relation queries the response was YES. [2025-03-09 06:19:55,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20669 conditions, 6816 events. 3515/6816 cut-off events. For 12491/13229 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 52554 event pairs, 187 based on Foata normal form. 399/7130 useless extension candidates. Maximal degree in co-relation 20634. Up to 1445 conditions per place. [2025-03-09 06:19:55,039 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 135 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2025-03-09 06:19:55,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1105 flow [2025-03-09 06:19:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2025-03-09 06:19:55,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2025-03-09 06:19:55,040 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 195 transitions. [2025-03-09 06:19:55,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1105 flow [2025-03-09 06:19:55,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 156 transitions, 1096 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:19:55,047 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:55,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-03-09 06:19:55,048 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-09 06:19:55,048 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:55,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:55,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:55,048 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:55,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:19:55,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:55,253 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:55,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1818785722, now seen corresponding path program 1 times [2025-03-09 06:19:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:55,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669142937] [2025-03-09 06:19:55,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:55,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:55,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:55,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:55,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669142937] [2025-03-09 06:19:55,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669142937] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:55,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:55,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:55,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101991493] [2025-03-09 06:19:55,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:55,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:55,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:55,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:55,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:55,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-09 06:19:55,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:55,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:55,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-09 06:19:55,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:55,821 INFO L124 PetriNetUnfolderBase]: 5001/8505 cut-off events. [2025-03-09 06:19:55,821 INFO L125 PetriNetUnfolderBase]: For 15687/16715 co-relation queries the response was YES. [2025-03-09 06:19:55,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27806 conditions, 8505 events. 5001/8505 cut-off events. For 15687/16715 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 59225 event pairs, 2581 based on Foata normal form. 390/8728 useless extension candidates. Maximal degree in co-relation 27768. Up to 4789 conditions per place. [2025-03-09 06:19:55,864 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 82 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2025-03-09 06:19:55,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 696 flow [2025-03-09 06:19:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-09 06:19:55,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6647727272727273 [2025-03-09 06:19:55,865 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 117 transitions. [2025-03-09 06:19:55,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 696 flow [2025-03-09 06:19:55,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 660 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-03-09 06:19:55,876 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:55,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-03-09 06:19:55,877 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-09 06:19:55,877 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:55,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:55,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:55,877 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:55,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:19:55,877 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:55,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:55,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1619614784, now seen corresponding path program 1 times [2025-03-09 06:19:55,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:55,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95277222] [2025-03-09 06:19:55,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:55,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:55,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:55,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:55,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:55,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95277222] [2025-03-09 06:19:55,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95277222] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:55,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828910629] [2025-03-09 06:19:55,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:55,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:55,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:19:55,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:19:55,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:55,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:55,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:55,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:56,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:56,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828910629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:56,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:56,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515972008] [2025-03-09 06:19:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:56,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:56,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:56,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:56,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:56,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:56,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:56,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:56,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:56,600 INFO L124 PetriNetUnfolderBase]: 4507/7873 cut-off events. [2025-03-09 06:19:56,600 INFO L125 PetriNetUnfolderBase]: For 15589/16012 co-relation queries the response was YES. [2025-03-09 06:19:56,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25268 conditions, 7873 events. 4507/7873 cut-off events. For 15589/16012 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 56470 event pairs, 999 based on Foata normal form. 198/7823 useless extension candidates. Maximal degree in co-relation 25230. Up to 3212 conditions per place. [2025-03-09 06:19:56,631 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 96 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2025-03-09 06:19:56,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 787 flow [2025-03-09 06:19:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2025-03-09 06:19:56,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-03-09 06:19:56,632 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 164 transitions. [2025-03-09 06:19:56,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 787 flow [2025-03-09 06:19:56,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 773 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:56,641 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2025-03-09 06:19:56,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2025-03-09 06:19:56,642 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2025-03-09 06:19:56,642 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2025-03-09 06:19:56,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:56,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:56,642 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:56,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 06:19:56,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-09 06:19:56,842 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:56,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:56,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1644594424, now seen corresponding path program 1 times [2025-03-09 06:19:56,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:56,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742193836] [2025-03-09 06:19:56,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:56,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:56,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:56,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:56,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:56,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:56,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:56,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742193836] [2025-03-09 06:19:56,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742193836] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:56,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276979262] [2025-03-09 06:19:56,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:56,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:56,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:56,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:19:56,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:19:56,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:56,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:56,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:56,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:56,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:56,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:56,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276979262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:56,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:56,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541841389] [2025-03-09 06:19:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:56,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:56,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:56,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:56,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:56,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:56,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:56,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:56,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:56,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:57,406 INFO L124 PetriNetUnfolderBase]: 3819/6874 cut-off events. [2025-03-09 06:19:57,407 INFO L125 PetriNetUnfolderBase]: For 14623/14830 co-relation queries the response was YES. [2025-03-09 06:19:57,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22408 conditions, 6874 events. 3819/6874 cut-off events. For 14623/14830 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 50458 event pairs, 187 based on Foata normal form. 228/6810 useless extension candidates. Maximal degree in co-relation 22369. Up to 3648 conditions per place. [2025-03-09 06:19:57,435 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 99 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2025-03-09 06:19:57,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 901 flow [2025-03-09 06:19:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2025-03-09 06:19:57,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325757575757576 [2025-03-09 06:19:57,436 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 6 states and 167 transitions. [2025-03-09 06:19:57,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 901 flow [2025-03-09 06:19:57,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 893 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:19:57,445 INFO L231 Difference]: Finished difference. Result has 82 places, 55 transitions, 293 flow [2025-03-09 06:19:57,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=82, PETRI_TRANSITIONS=55} [2025-03-09 06:19:57,445 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2025-03-09 06:19:57,445 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 55 transitions, 293 flow [2025-03-09 06:19:57,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:57,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:57,446 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:57,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:19:57,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 06:19:57,646 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:57,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:57,647 INFO L85 PathProgramCache]: Analyzing trace with hash -642971787, now seen corresponding path program 1 times [2025-03-09 06:19:57,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:57,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414354725] [2025-03-09 06:19:57,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:57,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:57,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:57,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:57,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:57,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:57,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414354725] [2025-03-09 06:19:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414354725] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240594789] [2025-03-09 06:19:57,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:57,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:57,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:57,725 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:19:57,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:19:57,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:57,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:57,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:57,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:57,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:57,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:57,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:57,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240594789] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:57,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:57,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-09 06:19:57,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120998438] [2025-03-09 06:19:57,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:57,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 06:19:57,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:57,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 06:19:57,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:19:57,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:57,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 55 transitions, 293 flow. Second operand has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:57,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:57,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:57,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:58,733 INFO L124 PetriNetUnfolderBase]: 4661/8863 cut-off events. [2025-03-09 06:19:58,733 INFO L125 PetriNetUnfolderBase]: For 20308/20722 co-relation queries the response was YES. [2025-03-09 06:19:58,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29715 conditions, 8863 events. 4661/8863 cut-off events. For 20308/20722 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 67541 event pairs, 175 based on Foata normal form. 594/9454 useless extension candidates. Maximal degree in co-relation 29676. Up to 1870 conditions per place. [2025-03-09 06:19:58,780 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 147 selfloop transitions, 20 changer transitions 0/182 dead transitions. [2025-03-09 06:19:58,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 182 transitions, 1351 flow [2025-03-09 06:19:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:19:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:19:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 349 transitions. [2025-03-09 06:19:58,782 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6609848484848485 [2025-03-09 06:19:58,782 INFO L175 Difference]: Start difference. First operand has 82 places, 55 transitions, 293 flow. Second operand 12 states and 349 transitions. [2025-03-09 06:19:58,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 182 transitions, 1351 flow [2025-03-09 06:19:58,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 182 transitions, 1321 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:19:58,804 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 436 flow [2025-03-09 06:19:58,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=436, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2025-03-09 06:19:58,804 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-03-09 06:19:58,804 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 436 flow [2025-03-09 06:19:58,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:58,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:58,804 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:58,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 06:19:59,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 06:19:59,005 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:59,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:59,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1537557922, now seen corresponding path program 1 times [2025-03-09 06:19:59,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:59,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764500684] [2025-03-09 06:19:59,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:59,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:59,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:59,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:59,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:59,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:59,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:59,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764500684] [2025-03-09 06:19:59,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764500684] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:59,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502889667] [2025-03-09 06:19:59,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:59,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:59,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:59,068 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:19:59,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:19:59,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:59,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:59,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:59,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:59,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:59,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:59,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502889667] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:59,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:59,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-09 06:19:59,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867635951] [2025-03-09 06:19:59,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:59,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 06:19:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:59,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 06:19:59,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:19:59,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:59,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 436 flow. Second operand has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:59,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:59,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:59,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:01,521 INFO L124 PetriNetUnfolderBase]: 12859/25293 cut-off events. [2025-03-09 06:20:01,521 INFO L125 PetriNetUnfolderBase]: For 108270/109456 co-relation queries the response was YES. [2025-03-09 06:20:01,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92833 conditions, 25293 events. 12859/25293 cut-off events. For 108270/109456 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 231114 event pairs, 571 based on Foata normal form. 1674/26876 useless extension candidates. Maximal degree in co-relation 92788. Up to 5827 conditions per place. [2025-03-09 06:20:01,657 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 356 selfloop transitions, 54 changer transitions 0/425 dead transitions. [2025-03-09 06:20:01,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 425 transitions, 3448 flow [2025-03-09 06:20:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 06:20:01,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-09 06:20:01,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 748 transitions. [2025-03-09 06:20:01,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-03-09 06:20:01,660 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 436 flow. Second operand 24 states and 748 transitions. [2025-03-09 06:20:01,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 425 transitions, 3448 flow [2025-03-09 06:20:01,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 425 transitions, 3319 flow, removed 53 selfloop flow, removed 6 redundant places. [2025-03-09 06:20:01,797 INFO L231 Difference]: Finished difference. Result has 122 places, 110 transitions, 1065 flow [2025-03-09 06:20:01,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1065, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2025-03-09 06:20:01,797 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2025-03-09 06:20:01,797 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 1065 flow [2025-03-09 06:20:01,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:01,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:01,797 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:01,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 06:20:01,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:01,998 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:01,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1331549010, now seen corresponding path program 1 times [2025-03-09 06:20:01,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:01,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359122442] [2025-03-09 06:20:01,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:02,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:02,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:02,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:02,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:20:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359122442] [2025-03-09 06:20:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359122442] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:20:02,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:20:02,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:20:02,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256015287] [2025-03-09 06:20:02,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:20:02,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:20:02,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:02,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:20:02,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:20:02,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-09 06:20:02,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 110 transitions, 1065 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:02,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:02,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-09 06:20:02,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:04,912 INFO L124 PetriNetUnfolderBase]: 20427/34219 cut-off events. [2025-03-09 06:20:04,912 INFO L125 PetriNetUnfolderBase]: For 169964/171158 co-relation queries the response was YES. [2025-03-09 06:20:05,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138688 conditions, 34219 events. 20427/34219 cut-off events. For 169964/171158 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 283639 event pairs, 7233 based on Foata normal form. 1188/35029 useless extension candidates. Maximal degree in co-relation 138630. Up to 15315 conditions per place. [2025-03-09 06:20:05,235 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 171 selfloop transitions, 6 changer transitions 0/188 dead transitions. [2025-03-09 06:20:05,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 188 transitions, 2157 flow [2025-03-09 06:20:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:20:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:20:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-03-09 06:20:05,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2025-03-09 06:20:05,236 INFO L175 Difference]: Start difference. First operand has 122 places, 110 transitions, 1065 flow. Second operand 4 states and 109 transitions. [2025-03-09 06:20:05,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 188 transitions, 2157 flow [2025-03-09 06:20:05,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 188 transitions, 1810 flow, removed 145 selfloop flow, removed 8 redundant places. [2025-03-09 06:20:05,897 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 862 flow [2025-03-09 06:20:05,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=862, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2025-03-09 06:20:05,897 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-03-09 06:20:05,897 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 862 flow [2025-03-09 06:20:05,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:05,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:05,898 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:05,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:20:05,898 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:05,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash -557180205, now seen corresponding path program 1 times [2025-03-09 06:20:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155077939] [2025-03-09 06:20:05,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:05,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:05,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:05,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:05,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:05,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 06:20:05,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155077939] [2025-03-09 06:20:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155077939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:20:05,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:20:05,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:20:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294244462] [2025-03-09 06:20:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:20:05,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:20:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:05,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:20:05,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:20:05,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:20:05,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 862 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:05,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:05,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:20:05,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:07,946 INFO L124 PetriNetUnfolderBase]: 15774/26140 cut-off events. [2025-03-09 06:20:07,947 INFO L125 PetriNetUnfolderBase]: For 149659/149659 co-relation queries the response was YES. [2025-03-09 06:20:08,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104079 conditions, 26140 events. 15774/26140 cut-off events. For 149659/149659 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 209055 event pairs, 2818 based on Foata normal form. 858/26839 useless extension candidates. Maximal degree in co-relation 104024. Up to 13905 conditions per place. [2025-03-09 06:20:08,141 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 242 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2025-03-09 06:20:08,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 264 transitions, 2764 flow [2025-03-09 06:20:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:20:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:20:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-03-09 06:20:08,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-09 06:20:08,142 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 862 flow. Second operand 4 states and 110 transitions. [2025-03-09 06:20:08,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 264 transitions, 2764 flow [2025-03-09 06:20:08,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 264 transitions, 2748 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:20:08,358 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 872 flow [2025-03-09 06:20:08,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=872, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2025-03-09 06:20:08,358 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-03-09 06:20:08,358 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 872 flow [2025-03-09 06:20:08,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:08,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:08,358 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:08,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:20:08,358 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:08,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:08,359 INFO L85 PathProgramCache]: Analyzing trace with hash -620850343, now seen corresponding path program 1 times [2025-03-09 06:20:08,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:08,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816620331] [2025-03-09 06:20:08,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:08,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:08,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:20:08,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:20:08,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:08,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:08,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:08,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816620331] [2025-03-09 06:20:08,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816620331] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:08,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286323754] [2025-03-09 06:20:08,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:08,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:08,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:08,434 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:20:08,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:20:08,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:20:08,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:20:08,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:08,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:08,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:20:08,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:08,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:08,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286323754] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:08,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:08,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-03-09 06:20:08,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751070489] [2025-03-09 06:20:08,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:08,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 06:20:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:08,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 06:20:08,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2025-03-09 06:20:08,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:08,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 872 flow. Second operand has 17 states, 17 states have (on average 21.529411764705884) internal successors, (366), 17 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:08,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:08,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:08,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:12,035 INFO L124 PetriNetUnfolderBase]: 17303/33357 cut-off events. [2025-03-09 06:20:12,035 INFO L125 PetriNetUnfolderBase]: For 182106/182106 co-relation queries the response was YES. [2025-03-09 06:20:12,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128710 conditions, 33357 events. 17303/33357 cut-off events. For 182106/182106 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 309067 event pairs, 615 based on Foata normal form. 1484/34772 useless extension candidates. Maximal degree in co-relation 128654. Up to 10117 conditions per place. [2025-03-09 06:20:12,220 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 330 selfloop transitions, 56 changer transitions 0/401 dead transitions. [2025-03-09 06:20:12,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 401 transitions, 3465 flow [2025-03-09 06:20:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 06:20:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 06:20:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 649 transitions. [2025-03-09 06:20:12,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-03-09 06:20:12,222 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 872 flow. Second operand 21 states and 649 transitions. [2025-03-09 06:20:12,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 401 transitions, 3465 flow [2025-03-09 06:20:12,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 401 transitions, 3241 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:20:12,726 INFO L231 Difference]: Finished difference. Result has 139 places, 126 transitions, 1198 flow [2025-03-09 06:20:12,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1198, PETRI_PLACES=139, PETRI_TRANSITIONS=126} [2025-03-09 06:20:12,726 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 93 predicate places. [2025-03-09 06:20:12,726 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 1198 flow [2025-03-09 06:20:12,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.529411764705884) internal successors, (366), 17 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:12,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:12,727 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:12,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 06:20:12,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-09 06:20:12,927 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:12,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1384304146, now seen corresponding path program 1 times [2025-03-09 06:20:12,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:12,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532249191] [2025-03-09 06:20:12,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:12,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:12,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:20:12,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:20:12,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:12,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:12,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532249191] [2025-03-09 06:20:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532249191] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172075648] [2025-03-09 06:20:12,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:12,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:12,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:12,994 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:20:12,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:20:13,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:20:13,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:20:13,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:13,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:13,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:20:13,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:13,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:13,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172075648] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:13,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:13,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-03-09 06:20:13,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886848414] [2025-03-09 06:20:13,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:13,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 06:20:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:13,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 06:20:13,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2025-03-09 06:20:13,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:13,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 126 transitions, 1198 flow. Second operand has 20 states, 20 states have (on average 21.45) internal successors, (429), 20 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:13,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:13,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:13,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:19,834 INFO L124 PetriNetUnfolderBase]: 33363/64531 cut-off events. [2025-03-09 06:20:19,834 INFO L125 PetriNetUnfolderBase]: For 632635/632635 co-relation queries the response was YES. [2025-03-09 06:20:20,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255057 conditions, 64531 events. 33363/64531 cut-off events. For 632635/632635 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 647349 event pairs, 1627 based on Foata normal form. 4180/68598 useless extension candidates. Maximal degree in co-relation 254994. Up to 9339 conditions per place. [2025-03-09 06:20:20,463 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 563 selfloop transitions, 124 changer transitions 0/702 dead transitions. [2025-03-09 06:20:20,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 702 transitions, 6147 flow [2025-03-09 06:20:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 06:20:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-09 06:20:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1156 transitions. [2025-03-09 06:20:20,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7100737100737101 [2025-03-09 06:20:20,465 INFO L175 Difference]: Start difference. First operand has 139 places, 126 transitions, 1198 flow. Second operand 37 states and 1156 transitions. [2025-03-09 06:20:20,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 702 transitions, 6147 flow [2025-03-09 06:20:22,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 702 transitions, 6033 flow, removed 37 selfloop flow, removed 12 redundant places. [2025-03-09 06:20:22,614 INFO L231 Difference]: Finished difference. Result has 177 places, 188 transitions, 2324 flow [2025-03-09 06:20:22,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2324, PETRI_PLACES=177, PETRI_TRANSITIONS=188} [2025-03-09 06:20:22,615 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 131 predicate places. [2025-03-09 06:20:22,615 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 188 transitions, 2324 flow [2025-03-09 06:20:22,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 21.45) internal successors, (429), 20 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:22,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:22,616 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:22,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 06:20:22,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:22,816 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:22,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1107482249, now seen corresponding path program 1 times [2025-03-09 06:20:22,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:22,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477515297] [2025-03-09 06:20:22,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:22,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:22,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:20:22,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:20:22,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:22,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:22,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477515297] [2025-03-09 06:20:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477515297] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843659185] [2025-03-09 06:20:22,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:22,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:22,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:22,899 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:20:22,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:20:22,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:20:22,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:20:22,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:22,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:22,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:20:22,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:23,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:23,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843659185] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:23,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:23,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-03-09 06:20:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350291741] [2025-03-09 06:20:23,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:23,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 06:20:23,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:23,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 06:20:23,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2025-03-09 06:20:23,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:23,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 188 transitions, 2324 flow. Second operand has 23 states, 23 states have (on average 21.391304347826086) internal successors, (492), 23 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:23,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:23,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:23,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand