./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_safe-10.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-10.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 4d0c5b9355e30d5caa4f24695b56ab4fa8d9d282078ca8b4e24a8f9b8920e450 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:19:44,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:19:44,105 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:19:44,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:19:44,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:19:44,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:19:44,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:19:44,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:19:44,128 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:19:44,128 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:19:44,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:19:44,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:19:44,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:19:44,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:19:44,130 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:19:44,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:19:44,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:19:44,130 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:19:44,131 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:19:44,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:19:44,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:19:44,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:19:44,133 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 -> 4d0c5b9355e30d5caa4f24695b56ab4fa8d9d282078ca8b4e24a8f9b8920e450 [2025-03-09 06:19:44,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:19:44,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:19:44,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:19:44,357 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:19:44,358 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:19:44,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-10.i [2025-03-09 06:19:45,483 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238162228/c571d63b795945bcaa5d85603b8bf45d/FLAGa5dde5ee5 [2025-03-09 06:19:45,695 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:19:45,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-10.i [2025-03-09 06:19:45,708 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238162228/c571d63b795945bcaa5d85603b8bf45d/FLAGa5dde5ee5 [2025-03-09 06:19:45,723 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238162228/c571d63b795945bcaa5d85603b8bf45d [2025-03-09 06:19:45,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:19:45,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:19:45,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:19:45,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:19:45,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:19:45,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:19:45" (1/1) ... [2025-03-09 06:19:45,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2646df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:45, skipping insertion in model container [2025-03-09 06:19:45,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:19:45" (1/1) ... [2025-03-09 06:19:45,757 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:19:45,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:19:45,949 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:19:45,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:19:46,004 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:19:46,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46 WrapperNode [2025-03-09 06:19:46,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:19:46,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:19:46,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:19:46,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:19:46,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,025 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-03-09 06:19:46,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:19:46,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:19:46,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:19:46,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:19:46,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,037 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 06:19:46,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,041 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,044 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:19:46,050 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:19:46,050 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:19:46,050 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:19:46,051 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (1/1) ... [2025-03-09 06:19:46,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:19:46,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:46,080 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 06:19:46,085 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 06:19:46,098 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 06:19:46,099 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 06:19:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 06:19:46,099 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 06:19:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:19:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:19:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:19:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:19:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:19:46,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:19:46,100 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 06:19:46,173 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:19:46,174 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:19:46,304 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:19:46,304 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:19:46,384 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:19:46,385 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:19:46,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:19:46 BoogieIcfgContainer [2025-03-09 06:19:46,385 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:19:46,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:19:46,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:19:46,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:19:46,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:19:45" (1/3) ... [2025-03-09 06:19:46,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38905d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:19:46, skipping insertion in model container [2025-03-09 06:19:46,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:46" (2/3) ... [2025-03-09 06:19:46,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38905d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:19:46, skipping insertion in model container [2025-03-09 06:19:46,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:19:46" (3/3) ... [2025-03-09 06:19:46,392 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_safe-10.i [2025-03-09 06:19:46,402 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:19:46,404 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-10.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-03-09 06:19:46,404 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:19:46,437 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:19:46,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2025-03-09 06:19:46,486 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2025-03-09 06:19:46,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:19:46,492 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 06:19:46,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2025-03-09 06:19:46,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2025-03-09 06:19:46,502 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:19:46,512 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;@3739c42d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:19:46,513 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-09 06:19:46,517 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:19:46,517 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:19:46,518 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:19:46,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:46,519 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:46,519 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 06:19:46,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:46,523 INFO L85 PathProgramCache]: Analyzing trace with hash 575390525, now seen corresponding path program 1 times [2025-03-09 06:19:46,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:46,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112289968] [2025-03-09 06:19:46,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:46,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:46,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:19:46,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:19:46,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:46,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:46,753 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 06:19:46,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:46,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112289968] [2025-03-09 06:19:46,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112289968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:46,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:46,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:46,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778307090] [2025-03-09 06:19:46,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:46,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:46,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:46,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:46,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:46,779 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 06:19:46,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:46,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:46,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:47,042 INFO L124 PetriNetUnfolderBase]: 785/1522 cut-off events. [2025-03-09 06:19:47,042 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:19:47,045 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 06:19:47,053 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 49 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2025-03-09 06:19:47,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 259 flow [2025-03-09 06:19:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2025-03-09 06:19:47,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2025-03-09 06:19:47,062 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 134 transitions. [2025-03-09 06:19:47,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 259 flow [2025-03-09 06:19:47,065 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 06:19:47,067 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-03-09 06:19:47,069 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 06:19:47,071 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-03-09 06:19:47,071 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-03-09 06:19:47,072 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 06:19:47,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:47,072 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:47,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:19:47,072 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 06:19:47,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1129395496, now seen corresponding path program 1 times [2025-03-09 06:19:47,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:47,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691812223] [2025-03-09 06:19:47,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:47,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:19:47,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:19:47,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:47,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:47,128 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 06:19:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691812223] [2025-03-09 06:19:47,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691812223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:47,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:47,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:19:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596458626] [2025-03-09 06:19:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:47,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:19:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:47,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:19:47,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:19:47,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:47,135 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 06:19:47,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:47,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:47,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:47,349 INFO L124 PetriNetUnfolderBase]: 1425/2717 cut-off events. [2025-03-09 06:19:47,350 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2025-03-09 06:19:47,354 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 06:19:47,383 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 46 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2025-03-09 06:19:47,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 273 flow [2025-03-09 06:19:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:19:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:19:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-09 06:19:47,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-09 06:19:47,385 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 97 transitions. [2025-03-09 06:19:47,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 273 flow [2025-03-09 06:19:47,386 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 06:19:47,387 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2025-03-09 06:19:47,387 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 06:19:47,387 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-03-09 06:19:47,387 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2025-03-09 06:19:47,388 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 06:19:47,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:47,388 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:47,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:19:47,388 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 06:19:47,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:47,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1100476575, now seen corresponding path program 1 times [2025-03-09 06:19:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:47,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526765919] [2025-03-09 06:19:47,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:47,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:19:47,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:19:47,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:47,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:47,470 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 06:19:47,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526765919] [2025-03-09 06:19:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526765919] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:47,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:47,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:47,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145184371] [2025-03-09 06:19:47,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:47,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:47,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:47,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:47,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:47,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:47,484 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 06:19:47,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:47,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:47,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:47,748 INFO L124 PetriNetUnfolderBase]: 1745/3008 cut-off events. [2025-03-09 06:19:47,749 INFO L125 PetriNetUnfolderBase]: For 544/594 co-relation queries the response was YES. [2025-03-09 06:19:47,752 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 06:19:47,763 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 63 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2025-03-09 06:19:47,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 361 flow [2025-03-09 06:19:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-03-09 06:19:47,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-09 06:19:47,765 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 128 transitions. [2025-03-09 06:19:47,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 361 flow [2025-03-09 06:19:47,766 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 06:19:47,767 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2025-03-09 06:19:47,767 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 06:19:47,768 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2025-03-09 06:19:47,768 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2025-03-09 06:19:47,768 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 06:19:47,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:47,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:47,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:19:47,769 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 06:19:47,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash -651521824, now seen corresponding path program 1 times [2025-03-09 06:19:47,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:47,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675053879] [2025-03-09 06:19:47,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:47,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:47,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:19:47,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:19:47,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:47,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:47,806 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 06:19:47,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675053879] [2025-03-09 06:19:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675053879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:47,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:47,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:19:47,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311975654] [2025-03-09 06:19:47,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:47,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:19:47,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:47,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:19:47,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:19:47,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:47,811 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 06:19:47,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:47,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:47,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:47,989 INFO L124 PetriNetUnfolderBase]: 1381/2582 cut-off events. [2025-03-09 06:19:47,989 INFO L125 PetriNetUnfolderBase]: For 724/910 co-relation queries the response was YES. [2025-03-09 06:19:47,994 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 06:19:48,005 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 48 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2025-03-09 06:19:48,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 318 flow [2025-03-09 06:19:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:19:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:19:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-09 06:19:48,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-09 06:19:48,008 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 97 transitions. [2025-03-09 06:19:48,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 318 flow [2025-03-09 06:19:48,010 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 06:19:48,025 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2025-03-09 06:19:48,025 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 06:19:48,026 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-03-09 06:19:48,026 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2025-03-09 06:19:48,026 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 06:19:48,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:48,026 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:48,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:19:48,026 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 06:19:48,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:48,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1304196917, now seen corresponding path program 1 times [2025-03-09 06:19:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:48,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491921072] [2025-03-09 06:19:48,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:48,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:48,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:19:48,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:19:48,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:48,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:48,091 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 06:19:48,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:48,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491921072] [2025-03-09 06:19:48,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491921072] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:48,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:48,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025542328] [2025-03-09 06:19:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:48,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:48,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:48,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:48,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:48,099 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 06:19:48,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:48,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:48,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:48,444 INFO L124 PetriNetUnfolderBase]: 2577/4479 cut-off events. [2025-03-09 06:19:48,445 INFO L125 PetriNetUnfolderBase]: For 1559/2051 co-relation queries the response was YES. [2025-03-09 06:19:48,449 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 06:19:48,467 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2025-03-09 06:19:48,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 413 flow [2025-03-09 06:19:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-09 06:19:48,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-09 06:19:48,469 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 124 transitions. [2025-03-09 06:19:48,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 413 flow [2025-03-09 06:19:48,470 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 06:19:48,471 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2025-03-09 06:19:48,471 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 06:19:48,472 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-03-09 06:19:48,472 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2025-03-09 06:19:48,472 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 06:19:48,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:48,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:48,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:19:48,472 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 06:19:48,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1277660195, now seen corresponding path program 1 times [2025-03-09 06:19:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:48,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692885776] [2025-03-09 06:19:48,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:48,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:48,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:19:48,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:19:48,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:48,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:48,507 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 06:19:48,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:48,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692885776] [2025-03-09 06:19:48,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692885776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:48,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:48,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:48,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210760876] [2025-03-09 06:19:48,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:48,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:48,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:48,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:48,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:48,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:48,514 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 06:19:48,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:48,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:48,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:48,749 INFO L124 PetriNetUnfolderBase]: 1777/3395 cut-off events. [2025-03-09 06:19:48,749 INFO L125 PetriNetUnfolderBase]: For 1293/1827 co-relation queries the response was YES. [2025-03-09 06:19:48,753 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 06:19:48,765 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2025-03-09 06:19:48,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 451 flow [2025-03-09 06:19:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-09 06:19:48,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-09 06:19:48,768 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 124 transitions. [2025-03-09 06:19:48,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 451 flow [2025-03-09 06:19:48,769 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 06:19:48,770 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2025-03-09 06:19:48,770 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 06:19:48,771 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-03-09 06:19:48,771 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2025-03-09 06:19:48,771 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 06:19:48,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:48,772 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:48,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:19:48,772 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 06:19:48,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1749870056, now seen corresponding path program 1 times [2025-03-09 06:19:48,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:48,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305359743] [2025-03-09 06:19:48,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:48,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:48,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:48,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:48,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:48,844 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 06:19:48,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:48,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305359743] [2025-03-09 06:19:48,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305359743] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:48,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:48,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:48,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192980331] [2025-03-09 06:19:48,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:48,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:48,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:48,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:48,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:48,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:48,847 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 06:19:48,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:48,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:48,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:49,060 INFO L124 PetriNetUnfolderBase]: 1279/2491 cut-off events. [2025-03-09 06:19:49,060 INFO L125 PetriNetUnfolderBase]: For 1526/1863 co-relation queries the response was YES. [2025-03-09 06:19:49,065 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 06:19:49,072 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2025-03-09 06:19:49,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 513 flow [2025-03-09 06:19:49,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-03-09 06:19:49,073 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-09 06:19:49,073 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 160 transitions. [2025-03-09 06:19:49,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 513 flow [2025-03-09 06:19:49,076 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 06:19:49,077 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2025-03-09 06:19:49,077 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 06:19:49,077 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2025-03-09 06:19:49,077 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2025-03-09 06:19:49,077 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 06:19:49,078 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:49,078 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:49,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:19:49,078 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 06:19:49,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1115148775, now seen corresponding path program 1 times [2025-03-09 06:19:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:49,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303751676] [2025-03-09 06:19:49,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:49,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:49,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:49,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:49,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:49,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:49,145 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 06:19:49,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:49,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303751676] [2025-03-09 06:19:49,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303751676] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:49,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:49,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:49,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121744216] [2025-03-09 06:19:49,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:49,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:49,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:49,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:49,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:49,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:49,146 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 06:19:49,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:49,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:49,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:49,349 INFO L124 PetriNetUnfolderBase]: 1331/2637 cut-off events. [2025-03-09 06:19:49,349 INFO L125 PetriNetUnfolderBase]: For 1957/2223 co-relation queries the response was YES. [2025-03-09 06:19:49,357 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 06:19:49,366 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2025-03-09 06:19:49,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 534 flow [2025-03-09 06:19:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-03-09 06:19:49,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2025-03-09 06:19:49,368 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 161 transitions. [2025-03-09 06:19:49,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 534 flow [2025-03-09 06:19:49,373 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 06:19:49,374 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2025-03-09 06:19:49,374 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 06:19:49,375 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2025-03-09 06:19:49,375 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2025-03-09 06:19:49,375 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 06:19:49,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:49,375 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:49,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:19:49,375 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 06:19:49,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:49,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810856, now seen corresponding path program 1 times [2025-03-09 06:19:49,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:49,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735554476] [2025-03-09 06:19:49,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:49,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:49,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:49,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:49,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:49,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:49,442 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 06:19:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735554476] [2025-03-09 06:19:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735554476] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:49,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:49,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:49,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338344809] [2025-03-09 06:19:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:49,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:49,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:49,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:49,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:49,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:49,444 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 06:19:49,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:49,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:49,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:49,673 INFO L124 PetriNetUnfolderBase]: 1187/2365 cut-off events. [2025-03-09 06:19:49,673 INFO L125 PetriNetUnfolderBase]: For 2368/2607 co-relation queries the response was YES. [2025-03-09 06:19:49,679 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 06:19:49,687 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 56 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2025-03-09 06:19:49,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 464 flow [2025-03-09 06:19:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-03-09 06:19:49,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6636363636363637 [2025-03-09 06:19:49,688 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 146 transitions. [2025-03-09 06:19:49,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 464 flow [2025-03-09 06:19:49,691 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 06:19:49,693 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2025-03-09 06:19:49,694 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 06:19:49,695 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2025-03-09 06:19:49,695 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2025-03-09 06:19:49,695 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 06:19:49,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:49,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:49,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:19:49,695 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 06:19:49,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810855, now seen corresponding path program 1 times [2025-03-09 06:19:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:49,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598944092] [2025-03-09 06:19:49,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:49,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:49,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:49,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:49,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:49,755 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 06:19:49,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:49,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598944092] [2025-03-09 06:19:49,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598944092] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:49,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:49,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:49,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105424423] [2025-03-09 06:19:49,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:49,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:49,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:49,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:49,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:49,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:49,757 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 06:19:49,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:49,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:49,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:49,950 INFO L124 PetriNetUnfolderBase]: 1235/2453 cut-off events. [2025-03-09 06:19:49,951 INFO L125 PetriNetUnfolderBase]: For 2793/3041 co-relation queries the response was YES. [2025-03-09 06:19:49,956 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 06:19:49,963 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 66 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2025-03-09 06:19:49,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 538 flow [2025-03-09 06:19:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2025-03-09 06:19:49,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7136363636363636 [2025-03-09 06:19:49,965 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 157 transitions. [2025-03-09 06:19:49,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 538 flow [2025-03-09 06:19:49,968 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 06:19:49,969 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2025-03-09 06:19:49,969 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 06:19:49,971 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-09 06:19:49,971 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2025-03-09 06:19:49,971 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 06:19:49,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:49,971 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:49,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:19:49,972 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 06:19:49,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash 774894829, now seen corresponding path program 1 times [2025-03-09 06:19:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:49,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274927039] [2025-03-09 06:19:49,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:49,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:49,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:49,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:49,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:49,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,049 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 06:19:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274927039] [2025-03-09 06:19:50,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274927039] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690493210] [2025-03-09 06:19:50,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:50,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:50,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:50,052 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 06:19:50,053 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 06:19:50,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:50,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:50,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:50,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:19:50,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:50,178 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 06:19:50,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:50,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690493210] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:50,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:50,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-09 06:19:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842631598] [2025-03-09 06:19:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:50,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:50,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:50,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:19:50,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:50,185 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 06:19:50,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:50,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:50,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:50,326 INFO L124 PetriNetUnfolderBase]: 1235/2574 cut-off events. [2025-03-09 06:19:50,326 INFO L125 PetriNetUnfolderBase]: For 4215/4546 co-relation queries the response was YES. [2025-03-09 06:19:50,331 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 06:19:50,338 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-03-09 06:19:50,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 515 flow [2025-03-09 06:19:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-09 06:19:50,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-03-09 06:19:50,339 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 111 transitions. [2025-03-09 06:19:50,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 515 flow [2025-03-09 06:19:50,341 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 06:19:50,342 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2025-03-09 06:19:50,342 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 06:19:50,342 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-09 06:19:50,343 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2025-03-09 06:19:50,343 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 06:19:50,343 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:50,343 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:50,355 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 06:19:50,547 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 06:19:50,547 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 06:19:50,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:50,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1305596489, now seen corresponding path program 1 times [2025-03-09 06:19:50,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:50,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472875441] [2025-03-09 06:19:50,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:50,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:50,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:50,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:50,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,588 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 06:19:50,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:50,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472875441] [2025-03-09 06:19:50,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472875441] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:50,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919302034] [2025-03-09 06:19:50,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:50,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:50,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:50,591 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 06:19:50,592 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 06:19:50,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:50,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:50,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:50,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:50,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:50,658 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 06:19:50,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:50,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919302034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:50,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489722451] [2025-03-09 06:19:50,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:50,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:50,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:50,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:50,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:50,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:50,670 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 06:19:50,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:50,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:50,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:50,916 INFO L124 PetriNetUnfolderBase]: 1657/2934 cut-off events. [2025-03-09 06:19:50,916 INFO L125 PetriNetUnfolderBase]: For 4829/5215 co-relation queries the response was YES. [2025-03-09 06:19:50,921 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 06:19:50,931 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2025-03-09 06:19:50,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 696 flow [2025-03-09 06:19:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-03-09 06:19:50,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-03-09 06:19:50,933 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 170 transitions. [2025-03-09 06:19:50,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 696 flow [2025-03-09 06:19:50,938 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 06:19:50,939 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2025-03-09 06:19:50,939 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 06:19:50,940 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2025-03-09 06:19:50,940 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2025-03-09 06:19:50,940 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 06:19:50,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:50,940 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:50,947 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 06:19:51,142 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 06:19:51,142 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 06:19:51,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:51,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1748063893, now seen corresponding path program 1 times [2025-03-09 06:19:51,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:51,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935448622] [2025-03-09 06:19:51,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:51,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:51,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:51,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:51,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:51,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:51,207 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 06:19:51,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:51,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935448622] [2025-03-09 06:19:51,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935448622] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:51,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651011271] [2025-03-09 06:19:51,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:51,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:51,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:51,210 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 06:19:51,212 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 06:19:51,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:51,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:51,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:51,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:51,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:19:51,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:51,320 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 06:19:51,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:51,363 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 06:19:51,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651011271] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:51,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:51,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-03-09 06:19:51,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730767718] [2025-03-09 06:19:51,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:51,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:19:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:51,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:19:51,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:51,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:51,376 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 06:19:51,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:51,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:51,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:51,842 INFO L124 PetriNetUnfolderBase]: 3515/6816 cut-off events. [2025-03-09 06:19:51,843 INFO L125 PetriNetUnfolderBase]: For 12491/13229 co-relation queries the response was YES. [2025-03-09 06:19:51,853 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 06:19:51,877 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 135 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2025-03-09 06:19:51,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1105 flow [2025-03-09 06:19:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2025-03-09 06:19:51,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2025-03-09 06:19:51,878 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 195 transitions. [2025-03-09 06:19:51,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1105 flow [2025-03-09 06:19:51,884 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 06:19:51,885 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:51,885 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 06:19:51,886 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-09 06:19:51,886 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:51,886 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 06:19:51,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:51,886 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:51,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:19:52,090 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 06:19:52,090 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 06:19:52,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1818785722, now seen corresponding path program 1 times [2025-03-09 06:19:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:52,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261457353] [2025-03-09 06:19:52,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:52,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:52,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:52,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:52,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,111 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 06:19:52,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261457353] [2025-03-09 06:19:52,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261457353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:52,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:52,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:52,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149961221] [2025-03-09 06:19:52,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:52,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:52,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:52,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:52,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:52,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-09 06:19:52,118 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 06:19:52,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:52,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-09 06:19:52,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:52,718 INFO L124 PetriNetUnfolderBase]: 5001/8505 cut-off events. [2025-03-09 06:19:52,718 INFO L125 PetriNetUnfolderBase]: For 15687/16715 co-relation queries the response was YES. [2025-03-09 06:19:52,736 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 06:19:52,773 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 82 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2025-03-09 06:19:52,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 696 flow [2025-03-09 06:19:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-09 06:19:52,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6647727272727273 [2025-03-09 06:19:52,774 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 117 transitions. [2025-03-09 06:19:52,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 696 flow [2025-03-09 06:19:52,785 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 06:19:52,786 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:52,787 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 06:19:52,787 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-09 06:19:52,787 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:52,787 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 06:19:52,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:52,788 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:52,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:19:52,788 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 06:19:52,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:52,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1619614784, now seen corresponding path program 1 times [2025-03-09 06:19:52,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:52,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643319442] [2025-03-09 06:19:52,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:52,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:52,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:52,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:52,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:52,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,830 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 06:19:52,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:52,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643319442] [2025-03-09 06:19:52,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643319442] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:52,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318191459] [2025-03-09 06:19:52,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:52,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:52,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:52,833 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 06:19:52,834 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 06:19:52,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:52,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:52,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:52,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:52,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:52,899 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 06:19:52,899 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:52,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318191459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:52,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:52,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710098690] [2025-03-09 06:19:52,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:52,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:52,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:52,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:52,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:52,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:52,909 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 06:19:52,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:52,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:52,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:53,502 INFO L124 PetriNetUnfolderBase]: 4507/7873 cut-off events. [2025-03-09 06:19:53,502 INFO L125 PetriNetUnfolderBase]: For 15589/16012 co-relation queries the response was YES. [2025-03-09 06:19:53,517 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 06:19:53,544 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 96 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2025-03-09 06:19:53,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 787 flow [2025-03-09 06:19:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2025-03-09 06:19:53,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-03-09 06:19:53,546 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 164 transitions. [2025-03-09 06:19:53,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 787 flow [2025-03-09 06:19:53,555 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 06:19:53,556 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2025-03-09 06:19:53,556 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 06:19:53,557 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2025-03-09 06:19:53,557 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2025-03-09 06:19:53,557 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 06:19:53,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:53,557 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:53,565 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 06:19:53,757 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 06:19:53,758 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 06:19:53,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:53,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1644594424, now seen corresponding path program 1 times [2025-03-09 06:19:53,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:53,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593780511] [2025-03-09 06:19:53,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:53,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:53,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:53,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,795 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 06:19:53,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593780511] [2025-03-09 06:19:53,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593780511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164213666] [2025-03-09 06:19:53,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:53,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:53,797 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 06:19:53,799 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 06:19:53,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:53,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:53,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:53,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:53,865 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 06:19:53,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:53,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164213666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:53,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:53,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:53,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948944698] [2025-03-09 06:19:53,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:53,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:53,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:53,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:53,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:53,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:53,875 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 06:19:53,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:53,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:53,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:54,365 INFO L124 PetriNetUnfolderBase]: 3819/6874 cut-off events. [2025-03-09 06:19:54,365 INFO L125 PetriNetUnfolderBase]: For 14623/14830 co-relation queries the response was YES. [2025-03-09 06:19:54,380 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 06:19:54,400 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 99 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2025-03-09 06:19:54,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 901 flow [2025-03-09 06:19:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2025-03-09 06:19:54,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325757575757576 [2025-03-09 06:19:54,402 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 6 states and 167 transitions. [2025-03-09 06:19:54,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 901 flow [2025-03-09 06:19:54,410 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 06:19:54,411 INFO L231 Difference]: Finished difference. Result has 82 places, 55 transitions, 293 flow [2025-03-09 06:19:54,411 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 06:19:54,411 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2025-03-09 06:19:54,412 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 55 transitions, 293 flow [2025-03-09 06:19:54,412 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 06:19:54,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:54,412 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 06:19:54,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 06:19:54,615 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 06:19:54,615 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 06:19:54,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash -642971787, now seen corresponding path program 1 times [2025-03-09 06:19:54,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:54,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883777130] [2025-03-09 06:19:54,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:54,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:54,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:54,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,655 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 06:19:54,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:54,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883777130] [2025-03-09 06:19:54,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883777130] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:54,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052292028] [2025-03-09 06:19:54,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:54,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:54,657 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 06:19:54,659 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 06:19:54,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:54,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:54,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:54,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:54,781 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 06:19:54,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:54,833 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 06:19:54,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052292028] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:54,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:54,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-09 06:19:54,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690151316] [2025-03-09 06:19:54,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:54,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 06:19:54,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:54,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 06:19:54,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:19:54,836 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:54,836 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 06:19:54,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:54,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:54,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:55,608 INFO L124 PetriNetUnfolderBase]: 4661/8863 cut-off events. [2025-03-09 06:19:55,608 INFO L125 PetriNetUnfolderBase]: For 20308/20722 co-relation queries the response was YES. [2025-03-09 06:19:55,628 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 06:19:55,658 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 147 selfloop transitions, 20 changer transitions 0/182 dead transitions. [2025-03-09 06:19:55,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 182 transitions, 1351 flow [2025-03-09 06:19:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:19:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:19:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 349 transitions. [2025-03-09 06:19:55,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6609848484848485 [2025-03-09 06:19:55,659 INFO L175 Difference]: Start difference. First operand has 82 places, 55 transitions, 293 flow. Second operand 12 states and 349 transitions. [2025-03-09 06:19:55,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 182 transitions, 1351 flow [2025-03-09 06:19:55,679 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 06:19:55,681 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 436 flow [2025-03-09 06:19:55,681 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 06:19:55,681 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-03-09 06:19:55,681 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 436 flow [2025-03-09 06:19:55,681 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 06:19:55,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:55,681 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 06:19:55,687 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 06:19:55,882 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 06:19:55,882 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 06:19:55,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1537557922, now seen corresponding path program 1 times [2025-03-09 06:19:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:55,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366622602] [2025-03-09 06:19:55,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:55,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:55,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:55,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,946 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 06:19:55,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:55,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366622602] [2025-03-09 06:19:55,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366622602] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:55,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155636600] [2025-03-09 06:19:55,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:55,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:55,949 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 06:19:55,951 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 06:19:55,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:55,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:55,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:55,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:56,062 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 06:19:56,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:56,122 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 06:19:56,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155636600] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:56,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:56,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-09 06:19:56,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962113851] [2025-03-09 06:19:56,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:56,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 06:19:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:56,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 06:19:56,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:19:56,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:56,124 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 06:19:56,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:56,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:56,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:58,465 INFO L124 PetriNetUnfolderBase]: 12859/25293 cut-off events. [2025-03-09 06:19:58,465 INFO L125 PetriNetUnfolderBase]: For 108270/109456 co-relation queries the response was YES. [2025-03-09 06:19:58,563 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 06:19:58,656 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 356 selfloop transitions, 54 changer transitions 0/425 dead transitions. [2025-03-09 06:19:58,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 425 transitions, 3448 flow [2025-03-09 06:19:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 06:19:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-09 06:19:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 748 transitions. [2025-03-09 06:19:58,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-03-09 06:19:58,658 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 436 flow. Second operand 24 states and 748 transitions. [2025-03-09 06:19:58,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 425 transitions, 3448 flow [2025-03-09 06:19:58,797 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 06:19:58,799 INFO L231 Difference]: Finished difference. Result has 122 places, 110 transitions, 1065 flow [2025-03-09 06:19:58,799 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 06:19:58,800 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2025-03-09 06:19:58,800 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 1065 flow [2025-03-09 06:19:58,800 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 06:19:58,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:58,800 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:58,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 06:19:59,000 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 06:19:59,001 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 06:19:59,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1331549010, now seen corresponding path program 1 times [2025-03-09 06:19:59,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:59,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418337586] [2025-03-09 06:19:59,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:59,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:59,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:59,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:59,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:59,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:59,025 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 06:19:59,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:59,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418337586] [2025-03-09 06:19:59,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418337586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:59,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:59,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:59,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073072882] [2025-03-09 06:19:59,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:59,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:59,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:59,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:59,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:59,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-09 06:19:59,032 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 06:19:59,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:59,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-09 06:19:59,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:01,919 INFO L124 PetriNetUnfolderBase]: 20427/34219 cut-off events. [2025-03-09 06:20:01,920 INFO L125 PetriNetUnfolderBase]: For 169964/171158 co-relation queries the response was YES. [2025-03-09 06:20:02,131 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 06:20:02,389 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 171 selfloop transitions, 6 changer transitions 0/188 dead transitions. [2025-03-09 06:20:02,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 188 transitions, 2157 flow [2025-03-09 06:20:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:20:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:20:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-03-09 06:20:02,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2025-03-09 06:20:02,390 INFO L175 Difference]: Start difference. First operand has 122 places, 110 transitions, 1065 flow. Second operand 4 states and 109 transitions. [2025-03-09 06:20:02,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 188 transitions, 2157 flow [2025-03-09 06:20:02,881 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 06:20:02,883 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 862 flow [2025-03-09 06:20:02,883 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 06:20:02,883 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-03-09 06:20:02,883 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 862 flow [2025-03-09 06:20:02,883 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 06:20:02,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:02,883 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:02,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:20:02,884 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 06:20:02,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -557180205, now seen corresponding path program 1 times [2025-03-09 06:20:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:02,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136873959] [2025-03-09 06:20:02,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:02,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:02,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:02,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:02,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:02,917 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 06:20:02,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:02,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136873959] [2025-03-09 06:20:02,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136873959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:20:02,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:20:02,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:20:02,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181002376] [2025-03-09 06:20:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:20:02,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:20:02,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:02,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:20:02,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:20:02,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:20:02,922 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 06:20:02,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:02,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:20:02,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:04,939 INFO L124 PetriNetUnfolderBase]: 15774/26140 cut-off events. [2025-03-09 06:20:04,940 INFO L125 PetriNetUnfolderBase]: For 149659/149659 co-relation queries the response was YES. [2025-03-09 06:20:05,019 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 06:20:05,125 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 242 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2025-03-09 06:20:05,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 264 transitions, 2764 flow [2025-03-09 06:20:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:20:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:20:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-03-09 06:20:05,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-09 06:20:05,126 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 862 flow. Second operand 4 states and 110 transitions. [2025-03-09 06:20:05,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 264 transitions, 2764 flow [2025-03-09 06:20:05,324 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 06:20:05,326 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 872 flow [2025-03-09 06:20:05,326 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 06:20:05,326 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-03-09 06:20:05,326 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 872 flow [2025-03-09 06:20:05,326 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 06:20:05,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:05,326 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:05,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:20:05,327 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 06:20:05,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:05,327 INFO L85 PathProgramCache]: Analyzing trace with hash -620850343, now seen corresponding path program 1 times [2025-03-09 06:20:05,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:05,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670902545] [2025-03-09 06:20:05,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:05,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:05,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:20:05,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:20:05,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:05,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:05,393 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 06:20:05,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:05,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670902545] [2025-03-09 06:20:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670902545] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:05,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046247536] [2025-03-09 06:20:05,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:05,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:05,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:05,395 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 06:20:05,397 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 06:20:05,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:20:05,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:20:05,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:05,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:05,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:20:05,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:05,537 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 06:20:05,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:05,612 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 06:20:05,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046247536] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:05,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:05,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-03-09 06:20:05,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539910099] [2025-03-09 06:20:05,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:05,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 06:20:05,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:05,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 06:20:05,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2025-03-09 06:20:05,614 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:05,614 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 06:20:05,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:05,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:05,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:08,990 INFO L124 PetriNetUnfolderBase]: 17303/33357 cut-off events. [2025-03-09 06:20:08,991 INFO L125 PetriNetUnfolderBase]: For 182106/182106 co-relation queries the response was YES. [2025-03-09 06:20:09,122 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 06:20:09,219 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 330 selfloop transitions, 56 changer transitions 0/401 dead transitions. [2025-03-09 06:20:09,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 401 transitions, 3465 flow [2025-03-09 06:20:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 06:20:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 06:20:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 649 transitions. [2025-03-09 06:20:09,221 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-03-09 06:20:09,221 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 872 flow. Second operand 21 states and 649 transitions. [2025-03-09 06:20:09,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 401 transitions, 3465 flow [2025-03-09 06:20:09,703 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 06:20:09,706 INFO L231 Difference]: Finished difference. Result has 139 places, 126 transitions, 1198 flow [2025-03-09 06:20:09,706 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 06:20:09,706 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 93 predicate places. [2025-03-09 06:20:09,706 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 1198 flow [2025-03-09 06:20:09,706 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 06:20:09,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:09,707 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 06:20:09,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 06:20:09,907 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 06:20:09,907 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 06:20:09,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:09,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1384304146, now seen corresponding path program 1 times [2025-03-09 06:20:09,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:09,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135840197] [2025-03-09 06:20:09,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:09,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:09,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:20:09,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:20:09,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:09,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:09,976 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 06:20:09,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:09,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135840197] [2025-03-09 06:20:09,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135840197] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:09,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763986222] [2025-03-09 06:20:09,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:09,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:09,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:09,978 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 06:20:09,979 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 06:20:10,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:20:10,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:20:10,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:10,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:10,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:20:10,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:10,102 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 06:20:10,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:10,169 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 06:20:10,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763986222] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:10,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:10,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-03-09 06:20:10,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340651584] [2025-03-09 06:20:10,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:10,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 06:20:10,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:10,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 06:20:10,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2025-03-09 06:20:10,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:10,170 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 06:20:10,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:10,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:10,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:16,931 INFO L124 PetriNetUnfolderBase]: 33363/64531 cut-off events. [2025-03-09 06:20:16,931 INFO L125 PetriNetUnfolderBase]: For 632635/632635 co-relation queries the response was YES. [2025-03-09 06:20:17,397 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 06:20:17,652 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 563 selfloop transitions, 124 changer transitions 0/702 dead transitions. [2025-03-09 06:20:17,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 702 transitions, 6147 flow [2025-03-09 06:20:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 06:20:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-09 06:20:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1156 transitions. [2025-03-09 06:20:17,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7100737100737101 [2025-03-09 06:20:17,654 INFO L175 Difference]: Start difference. First operand has 139 places, 126 transitions, 1198 flow. Second operand 37 states and 1156 transitions. [2025-03-09 06:20:17,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 702 transitions, 6147 flow [2025-03-09 06:20:19,793 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 06:20:19,797 INFO L231 Difference]: Finished difference. Result has 177 places, 188 transitions, 2324 flow [2025-03-09 06:20:19,797 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 06:20:19,797 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 131 predicate places. [2025-03-09 06:20:19,797 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 188 transitions, 2324 flow [2025-03-09 06:20:19,798 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 06:20:19,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:19,798 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 06:20:19,803 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 06:20:19,998 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 06:20:19,998 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 06:20:19,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:19,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1107482249, now seen corresponding path program 1 times [2025-03-09 06:20:19,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:19,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643998677] [2025-03-09 06:20:19,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:19,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:20,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:20:20,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:20:20,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:20,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:20,073 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 06:20:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643998677] [2025-03-09 06:20:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643998677] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548674469] [2025-03-09 06:20:20,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:20,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:20,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:20,075 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 06:20:20,077 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 06:20:20,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:20:20,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:20:20,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:20,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:20,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:20:20,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:20,232 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 06:20:20,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:20,329 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 06:20:20,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548674469] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:20,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:20,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-03-09 06:20:20,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697642109] [2025-03-09 06:20:20,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:20,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 06:20:20,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:20,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 06:20:20,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2025-03-09 06:20:20,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:20,331 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 06:20:20,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:20,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:20,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand