./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_safe-11.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-11.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 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:19:45,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:19:45,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:19:45,592 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:19:45,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:19:45,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:19:45,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:19:45,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:19:45,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:19:45,617 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:19:45,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:19:45,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:19:45,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:19:45,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:19:45,617 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:19:45,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:19:45,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:19:45,618 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:19:45,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:19:45,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:19:45,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:19:45,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:19:45,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:19:45,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:19:45,618 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:19:45,618 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:19:45,619 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:19:45,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:19:45,619 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:19:45,619 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:19:45,619 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:19:45,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:19:45,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:19:45,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:19:45,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:19:45,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:19:45,621 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 -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2025-03-09 06:19:45,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:19:45,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:19:45,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:19:45,842 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:19:45,842 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:19:45,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-11.i [2025-03-09 06:19:46,939 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32259767d/73f0758884214bdfb19052b804c1fe13/FLAG79170dd7b [2025-03-09 06:19:47,206 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:19:47,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2025-03-09 06:19:47,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32259767d/73f0758884214bdfb19052b804c1fe13/FLAG79170dd7b [2025-03-09 06:19:47,499 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32259767d/73f0758884214bdfb19052b804c1fe13 [2025-03-09 06:19:47,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:19:47,502 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:19:47,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:19:47,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:19:47,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:19:47,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f9c78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47, skipping insertion in model container [2025-03-09 06:19:47,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:19:47,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:19:47,800 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:19:47,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:19:47,863 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:19:47,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47 WrapperNode [2025-03-09 06:19:47,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:19:47,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:19:47,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:19:47,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:19:47,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,895 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-03-09 06:19:47,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:19:47,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:19:47,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:19:47,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:19:47,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,903 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,914 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 06:19:47,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,918 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:19:47,921 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:19:47,923 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:19:47,923 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:19:47,924 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (1/1) ... [2025-03-09 06:19:47,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:19:47,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:47,951 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 06:19:47,955 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 06:19:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 06:19:47,972 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 06:19:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 06:19:47,973 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 06:19:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:19:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:19:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:19:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:19:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:19:47,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:19:47,974 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 06:19:48,053 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:19:48,055 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:19:48,195 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:19:48,195 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:19:48,279 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:19:48,279 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:19:48,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:19:48 BoogieIcfgContainer [2025-03-09 06:19:48,279 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:19:48,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:19:48,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:19:48,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:19:48,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:19:47" (1/3) ... [2025-03-09 06:19:48,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e64dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:19:48, skipping insertion in model container [2025-03-09 06:19:48,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:47" (2/3) ... [2025-03-09 06:19:48,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e64dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:19:48, skipping insertion in model container [2025-03-09 06:19:48,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:19:48" (3/3) ... [2025-03-09 06:19:48,286 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2025-03-09 06:19:48,297 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:19:48,299 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-11.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-03-09 06:19:48,300 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:19:48,337 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:19:48,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2025-03-09 06:19:48,380 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2025-03-09 06:19:48,382 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:19:48,386 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 06:19:48,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2025-03-09 06:19:48,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2025-03-09 06:19:48,396 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:19:48,403 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;@648dd9d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:19:48,403 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-09 06:19:48,409 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:19:48,413 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:19:48,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:19:48,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:48,414 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:48,414 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 06:19:48,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:48,418 INFO L85 PathProgramCache]: Analyzing trace with hash 575390525, now seen corresponding path program 1 times [2025-03-09 06:19:48,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:48,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124840250] [2025-03-09 06:19:48,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:48,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:48,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:19:48,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:19:48,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:48,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:48,632 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 06:19:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:48,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124840250] [2025-03-09 06:19:48,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124840250] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:48,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:48,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:48,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611504925] [2025-03-09 06:19:48,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:48,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:48,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:48,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:48,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:48,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:48,659 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 06:19:48,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:48,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:48,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:48,895 INFO L124 PetriNetUnfolderBase]: 785/1522 cut-off events. [2025-03-09 06:19:48,895 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:19:48,901 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 06:19:48,913 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 49 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2025-03-09 06:19:48,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 259 flow [2025-03-09 06:19:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2025-03-09 06:19:48,923 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2025-03-09 06:19:48,924 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 134 transitions. [2025-03-09 06:19:48,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 259 flow [2025-03-09 06:19:48,927 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 06:19:48,929 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-03-09 06:19:48,930 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 06:19:48,934 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-03-09 06:19:48,934 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-03-09 06:19:48,935 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 06:19:48,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:48,935 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:48,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:19:48,935 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 06:19:48,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1129395496, now seen corresponding path program 1 times [2025-03-09 06:19:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:48,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964408031] [2025-03-09 06:19:48,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:48,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:48,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:19:48,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:19:48,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:48,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:49,023 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 06:19:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964408031] [2025-03-09 06:19:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964408031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:49,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:19:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339031320] [2025-03-09 06:19:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:49,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:19:49,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:49,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:19:49,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:19:49,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:49,032 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 06:19:49,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:49,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:49,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:49,298 INFO L124 PetriNetUnfolderBase]: 1425/2717 cut-off events. [2025-03-09 06:19:49,299 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2025-03-09 06:19:49,303 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 06:19:49,314 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 46 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2025-03-09 06:19:49,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 273 flow [2025-03-09 06:19:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:19:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:19:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-09 06:19:49,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-09 06:19:49,317 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 97 transitions. [2025-03-09 06:19:49,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 273 flow [2025-03-09 06:19:49,317 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 06:19:49,318 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2025-03-09 06:19:49,318 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 06:19:49,319 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-03-09 06:19:49,319 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2025-03-09 06:19:49,319 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 06:19:49,319 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:49,319 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:49,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:19:49,319 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 06:19:49,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:49,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1100476575, now seen corresponding path program 1 times [2025-03-09 06:19:49,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:49,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519742651] [2025-03-09 06:19:49,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:49,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:19:49,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:19:49,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:49,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:49,419 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 06:19:49,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:49,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519742651] [2025-03-09 06:19:49,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519742651] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:49,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:49,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:49,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666167824] [2025-03-09 06:19:49,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:49,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:49,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:49,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:49,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:49,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:49,435 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 06:19:49,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:49,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:49,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:49,704 INFO L124 PetriNetUnfolderBase]: 1745/3008 cut-off events. [2025-03-09 06:19:49,704 INFO L125 PetriNetUnfolderBase]: For 544/594 co-relation queries the response was YES. [2025-03-09 06:19:49,707 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 06:19:49,719 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 63 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2025-03-09 06:19:49,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 361 flow [2025-03-09 06:19:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:49,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-03-09 06:19:49,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-09 06:19:49,721 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 128 transitions. [2025-03-09 06:19:49,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 361 flow [2025-03-09 06:19:49,723 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 06:19:49,724 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2025-03-09 06:19:49,724 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 06:19:49,725 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2025-03-09 06:19:49,725 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2025-03-09 06:19:49,725 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 06:19:49,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:49,725 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:49,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:19:49,725 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 06:19:49,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -651521824, now seen corresponding path program 1 times [2025-03-09 06:19:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620636520] [2025-03-09 06:19:49,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:49,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:19:49,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:19:49,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:49,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:49,780 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 06:19:49,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620636520] [2025-03-09 06:19:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620636520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:49,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:49,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:19:49,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590336894] [2025-03-09 06:19:49,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:49,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:19:49,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:49,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:19:49,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:19:49,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:49,787 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 06:19:49,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:49,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:49,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:49,976 INFO L124 PetriNetUnfolderBase]: 1381/2582 cut-off events. [2025-03-09 06:19:49,976 INFO L125 PetriNetUnfolderBase]: For 724/910 co-relation queries the response was YES. [2025-03-09 06:19:49,981 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 06:19:49,992 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 48 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2025-03-09 06:19:49,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 318 flow [2025-03-09 06:19:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:19:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:19:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-09 06:19:49,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-09 06:19:49,994 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 97 transitions. [2025-03-09 06:19:49,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 318 flow [2025-03-09 06:19:49,995 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 06:19:49,996 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2025-03-09 06:19:49,996 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 06:19:49,997 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-03-09 06:19:49,997 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2025-03-09 06:19:49,997 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 06:19:49,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:49,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:49,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:19:49,997 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 06:19:49,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1304196917, now seen corresponding path program 1 times [2025-03-09 06:19:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:49,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212184689] [2025-03-09 06:19:49,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:50,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:50,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:19:50,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:19:50,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:50,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:50,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212184689] [2025-03-09 06:19:50,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212184689] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:50,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:50,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:50,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838613757] [2025-03-09 06:19:50,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:50,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:50,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:50,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:50,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:50,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:50,061 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 06:19:50,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:50,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:50,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:50,482 INFO L124 PetriNetUnfolderBase]: 2577/4479 cut-off events. [2025-03-09 06:19:50,482 INFO L125 PetriNetUnfolderBase]: For 1559/2051 co-relation queries the response was YES. [2025-03-09 06:19:50,490 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 06:19:50,517 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2025-03-09 06:19:50,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 413 flow [2025-03-09 06:19:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-09 06:19:50,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-09 06:19:50,519 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 124 transitions. [2025-03-09 06:19:50,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 413 flow [2025-03-09 06:19:50,521 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 06:19:50,522 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2025-03-09 06:19:50,522 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 06:19:50,522 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-03-09 06:19:50,523 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2025-03-09 06:19:50,523 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 06:19:50,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:50,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:50,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:19:50,523 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 06:19:50,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1277660195, now seen corresponding path program 1 times [2025-03-09 06:19:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:50,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885350178] [2025-03-09 06:19:50,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:50,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:50,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:19:50,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:19:50,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:50,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:50,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:50,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885350178] [2025-03-09 06:19:50,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885350178] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:50,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:50,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:50,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617373164] [2025-03-09 06:19:50,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:50,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:50,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:50,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:50,588 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:50,588 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 06:19:50,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:50,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:50,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:50,807 INFO L124 PetriNetUnfolderBase]: 1777/3395 cut-off events. [2025-03-09 06:19:50,807 INFO L125 PetriNetUnfolderBase]: For 1293/1827 co-relation queries the response was YES. [2025-03-09 06:19:50,812 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 06:19:50,824 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2025-03-09 06:19:50,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 451 flow [2025-03-09 06:19:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-09 06:19:50,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-09 06:19:50,825 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 124 transitions. [2025-03-09 06:19:50,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 451 flow [2025-03-09 06:19:50,827 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 06:19:50,829 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2025-03-09 06:19:50,829 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 06:19:50,830 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-03-09 06:19:50,831 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2025-03-09 06:19:50,831 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 06:19:50,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:50,831 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:50,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:19:50,831 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 06:19:50,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1749870056, now seen corresponding path program 1 times [2025-03-09 06:19:50,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:50,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341660045] [2025-03-09 06:19:50,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:50,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:50,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:50,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:50,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:50,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:50,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:50,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341660045] [2025-03-09 06:19:50,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341660045] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:50,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:50,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:50,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464000578] [2025-03-09 06:19:50,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:50,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:50,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:50,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:50,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:50,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:50,894 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 06:19:50,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:50,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:50,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:51,098 INFO L124 PetriNetUnfolderBase]: 1279/2491 cut-off events. [2025-03-09 06:19:51,099 INFO L125 PetriNetUnfolderBase]: For 1526/1863 co-relation queries the response was YES. [2025-03-09 06:19:51,102 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 06:19:51,109 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2025-03-09 06:19:51,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 513 flow [2025-03-09 06:19:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-03-09 06:19:51,110 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-09 06:19:51,110 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 160 transitions. [2025-03-09 06:19:51,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 513 flow [2025-03-09 06:19:51,113 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 06:19:51,114 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2025-03-09 06:19:51,114 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 06:19:51,119 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2025-03-09 06:19:51,119 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2025-03-09 06:19:51,119 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 06:19:51,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:51,119 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:51,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:19:51,119 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 06:19:51,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1115148775, now seen corresponding path program 1 times [2025-03-09 06:19:51,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:51,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043426979] [2025-03-09 06:19:51,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:51,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:51,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:51,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:51,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:51,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:51,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:51,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043426979] [2025-03-09 06:19:51,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043426979] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:51,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:51,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:51,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108032] [2025-03-09 06:19:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:51,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:51,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:51,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:51,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:51,181 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 06:19:51,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:51,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:51,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:51,377 INFO L124 PetriNetUnfolderBase]: 1331/2637 cut-off events. [2025-03-09 06:19:51,377 INFO L125 PetriNetUnfolderBase]: For 1957/2223 co-relation queries the response was YES. [2025-03-09 06:19:51,384 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 06:19:51,393 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2025-03-09 06:19:51,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 534 flow [2025-03-09 06:19:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-03-09 06:19:51,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2025-03-09 06:19:51,395 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 161 transitions. [2025-03-09 06:19:51,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 534 flow [2025-03-09 06:19:51,398 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 06:19:51,400 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2025-03-09 06:19:51,401 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 06:19:51,402 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2025-03-09 06:19:51,403 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2025-03-09 06:19:51,403 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 06:19:51,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:51,403 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:51,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:19:51,403 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 06:19:51,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:51,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810856, now seen corresponding path program 1 times [2025-03-09 06:19:51,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:51,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83129222] [2025-03-09 06:19:51,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:51,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:51,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:51,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:51,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:51,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:51,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83129222] [2025-03-09 06:19:51,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83129222] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:51,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:51,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:51,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628152511] [2025-03-09 06:19:51,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:51,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:51,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:51,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:51,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:51,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:51,459 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 06:19:51,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:51,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:51,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:51,658 INFO L124 PetriNetUnfolderBase]: 1187/2365 cut-off events. [2025-03-09 06:19:51,659 INFO L125 PetriNetUnfolderBase]: For 2368/2607 co-relation queries the response was YES. [2025-03-09 06:19:51,663 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 06:19:51,669 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 56 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2025-03-09 06:19:51,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 464 flow [2025-03-09 06:19:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-03-09 06:19:51,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6636363636363637 [2025-03-09 06:19:51,671 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 146 transitions. [2025-03-09 06:19:51,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 464 flow [2025-03-09 06:19:51,673 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 06:19:51,674 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2025-03-09 06:19:51,675 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 06:19:51,675 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2025-03-09 06:19:51,675 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2025-03-09 06:19:51,675 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 06:19:51,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:51,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:51,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:19:51,675 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 06:19:51,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:51,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810855, now seen corresponding path program 1 times [2025-03-09 06:19:51,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:51,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623631846] [2025-03-09 06:19:51,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:51,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:51,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:51,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:51,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:51,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:51,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:51,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623631846] [2025-03-09 06:19:51,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623631846] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:51,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:51,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:51,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197391280] [2025-03-09 06:19:51,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:51,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:51,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:51,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:51,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:51,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:51,734 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 06:19:51,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:51,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:51,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:51,927 INFO L124 PetriNetUnfolderBase]: 1235/2453 cut-off events. [2025-03-09 06:19:51,927 INFO L125 PetriNetUnfolderBase]: For 2793/3041 co-relation queries the response was YES. [2025-03-09 06:19:51,933 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 06:19:51,941 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 66 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2025-03-09 06:19:51,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 538 flow [2025-03-09 06:19:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:51,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2025-03-09 06:19:51,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7136363636363636 [2025-03-09 06:19:51,943 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 157 transitions. [2025-03-09 06:19:51,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 538 flow [2025-03-09 06:19:51,946 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 06:19:51,948 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2025-03-09 06:19:51,948 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 06:19:51,950 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-09 06:19:51,950 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2025-03-09 06:19:51,950 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 06:19:51,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:51,950 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:51,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:19:51,951 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 06:19:51,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:51,951 INFO L85 PathProgramCache]: Analyzing trace with hash 774894829, now seen corresponding path program 1 times [2025-03-09 06:19:51,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:51,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530973609] [2025-03-09 06:19:51,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:51,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:51,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:51,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:51,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,021 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 06:19:52,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:52,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530973609] [2025-03-09 06:19:52,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530973609] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:52,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95697492] [2025-03-09 06:19:52,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:52,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:52,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:52,028 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 06:19:52,029 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 06:19:52,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:52,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:52,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:52,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:19:52,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:52,161 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 06:19:52,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95697492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:52,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:52,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-09 06:19:52,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299029654] [2025-03-09 06:19:52,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:52,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:52,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:52,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:52,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:19:52,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:52,170 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 06:19:52,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:52,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:52,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:52,361 INFO L124 PetriNetUnfolderBase]: 1235/2574 cut-off events. [2025-03-09 06:19:52,361 INFO L125 PetriNetUnfolderBase]: For 4215/4546 co-relation queries the response was YES. [2025-03-09 06:19:52,368 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 06:19:52,378 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-03-09 06:19:52,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 515 flow [2025-03-09 06:19:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-09 06:19:52,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-03-09 06:19:52,380 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 111 transitions. [2025-03-09 06:19:52,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 515 flow [2025-03-09 06:19:52,383 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 06:19:52,384 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2025-03-09 06:19:52,385 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 06:19:52,385 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-09 06:19:52,385 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2025-03-09 06:19:52,385 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 06:19:52,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:52,386 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:52,396 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 06:19:52,590 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 06:19:52,590 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 06:19:52,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1305596489, now seen corresponding path program 1 times [2025-03-09 06:19:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711548076] [2025-03-09 06:19:52,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:52,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:52,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:52,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:52,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,642 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 06:19:52,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:52,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711548076] [2025-03-09 06:19:52,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711548076] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:52,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815791146] [2025-03-09 06:19:52,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:52,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:52,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:52,646 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 06:19:52,648 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 06:19:52,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:52,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:52,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:52,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:52,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:52,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:52,734 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 06:19:52,735 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:52,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815791146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:52,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:52,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:52,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352541078] [2025-03-09 06:19:52,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:52,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:52,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:52,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:52,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:52,752 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 06:19:52,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:52,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:52,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:53,062 INFO L124 PetriNetUnfolderBase]: 1657/2934 cut-off events. [2025-03-09 06:19:53,062 INFO L125 PetriNetUnfolderBase]: For 4829/5215 co-relation queries the response was YES. [2025-03-09 06:19:53,067 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 06:19:53,076 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2025-03-09 06:19:53,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 696 flow [2025-03-09 06:19:53,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-03-09 06:19:53,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-03-09 06:19:53,078 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 170 transitions. [2025-03-09 06:19:53,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 696 flow [2025-03-09 06:19:53,081 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 06:19:53,082 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2025-03-09 06:19:53,082 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 06:19:53,083 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2025-03-09 06:19:53,083 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2025-03-09 06:19:53,083 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 06:19:53,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:53,083 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:53,090 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 06:19:53,286 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 06:19:53,286 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 06:19:53,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:53,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1748063893, now seen corresponding path program 1 times [2025-03-09 06:19:53,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:53,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350902852] [2025-03-09 06:19:53,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:53,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:53,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:53,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,347 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 06:19:53,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:53,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350902852] [2025-03-09 06:19:53,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350902852] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:53,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49853805] [2025-03-09 06:19:53,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:53,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:53,350 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 06:19:53,352 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 06:19:53,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:53,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:53,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:19:53,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:53,452 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 06:19:53,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:53,495 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 06:19:53,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49853805] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:53,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:53,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-03-09 06:19:53,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101429948] [2025-03-09 06:19:53,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:53,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:19:53,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:53,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:19:53,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:53,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:53,504 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 06:19:53,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:53,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:53,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:53,979 INFO L124 PetriNetUnfolderBase]: 3515/6816 cut-off events. [2025-03-09 06:19:53,980 INFO L125 PetriNetUnfolderBase]: For 12491/13229 co-relation queries the response was YES. [2025-03-09 06:19:53,991 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 06:19:54,017 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 135 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2025-03-09 06:19:54,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1105 flow [2025-03-09 06:19:54,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:54,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2025-03-09 06:19:54,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2025-03-09 06:19:54,020 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 195 transitions. [2025-03-09 06:19:54,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1105 flow [2025-03-09 06:19:54,029 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 06:19:54,031 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:54,031 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 06:19:54,032 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-09 06:19:54,032 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:54,032 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 06:19:54,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:54,033 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:54,039 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 06:19:54,233 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 06:19:54,233 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 06:19:54,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1818785722, now seen corresponding path program 1 times [2025-03-09 06:19:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:54,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729382750] [2025-03-09 06:19:54,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:54,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:54,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:54,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,267 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 06:19:54,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:54,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729382750] [2025-03-09 06:19:54,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729382750] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:54,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:54,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:54,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130417690] [2025-03-09 06:19:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:54,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:54,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:54,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:54,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:54,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-09 06:19:54,274 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 06:19:54,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:54,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-09 06:19:54,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:54,720 INFO L124 PetriNetUnfolderBase]: 5001/8505 cut-off events. [2025-03-09 06:19:54,720 INFO L125 PetriNetUnfolderBase]: For 15687/16715 co-relation queries the response was YES. [2025-03-09 06:19:54,739 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 06:19:54,765 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 82 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2025-03-09 06:19:54,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 696 flow [2025-03-09 06:19:54,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-09 06:19:54,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6647727272727273 [2025-03-09 06:19:54,767 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 117 transitions. [2025-03-09 06:19:54,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 696 flow [2025-03-09 06:19:54,778 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 06:19:54,779 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:54,779 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 06:19:54,779 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-09 06:19:54,779 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:54,779 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 06:19:54,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:54,779 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:54,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:19:54,780 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 06:19:54,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1619614784, now seen corresponding path program 1 times [2025-03-09 06:19:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:54,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077204929] [2025-03-09 06:19:54,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:54,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:54,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:54,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,826 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 06:19:54,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077204929] [2025-03-09 06:19:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077204929] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248205946] [2025-03-09 06:19:54,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:54,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:54,828 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 06:19:54,830 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 06:19:54,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:54,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:54,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:54,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:54,901 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 06:19:54,901 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:54,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248205946] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:54,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:54,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:54,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044247099] [2025-03-09 06:19:54,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:54,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:54,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:54,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:54,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:54,911 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:54,911 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 06:19:54,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:54,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:54,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:55,366 INFO L124 PetriNetUnfolderBase]: 4507/7873 cut-off events. [2025-03-09 06:19:55,366 INFO L125 PetriNetUnfolderBase]: For 15589/16012 co-relation queries the response was YES. [2025-03-09 06:19:55,382 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 06:19:55,403 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 96 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2025-03-09 06:19:55,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 787 flow [2025-03-09 06:19:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2025-03-09 06:19:55,404 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-03-09 06:19:55,404 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 164 transitions. [2025-03-09 06:19:55,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 787 flow [2025-03-09 06:19:55,413 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 06:19:55,414 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2025-03-09 06:19:55,414 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 06:19:55,414 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2025-03-09 06:19:55,415 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2025-03-09 06:19:55,415 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 06:19:55,415 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:55,415 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:55,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:19:55,615 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 06:19:55,615 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 06:19:55,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1644594424, now seen corresponding path program 1 times [2025-03-09 06:19:55,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:55,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060340901] [2025-03-09 06:19:55,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:55,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:55,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:55,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:55,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060340901] [2025-03-09 06:19:55,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060340901] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154703795] [2025-03-09 06:19:55,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:55,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:55,664 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 06:19:55,666 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 06:19:55,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:55,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:55,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:55,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:55,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:55,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154703795] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:55,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:55,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:55,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113287293] [2025-03-09 06:19:55,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:55,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:55,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:55,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:55,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:55,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:55,745 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 06:19:55,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:55,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:55,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:56,194 INFO L124 PetriNetUnfolderBase]: 3819/6874 cut-off events. [2025-03-09 06:19:56,194 INFO L125 PetriNetUnfolderBase]: For 14623/14830 co-relation queries the response was YES. [2025-03-09 06:19:56,207 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 06:19:56,266 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 99 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2025-03-09 06:19:56,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 901 flow [2025-03-09 06:19:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2025-03-09 06:19:56,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325757575757576 [2025-03-09 06:19:56,267 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 6 states and 167 transitions. [2025-03-09 06:19:56,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 901 flow [2025-03-09 06:19:56,275 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 06:19:56,276 INFO L231 Difference]: Finished difference. Result has 82 places, 55 transitions, 293 flow [2025-03-09 06:19:56,277 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 06:19:56,277 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2025-03-09 06:19:56,277 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 55 transitions, 293 flow [2025-03-09 06:19:56,278 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 06:19:56,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:56,278 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 06:19:56,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:19:56,478 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 06:19:56,478 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 06:19:56,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:56,479 INFO L85 PathProgramCache]: Analyzing trace with hash -642971787, now seen corresponding path program 1 times [2025-03-09 06:19:56,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:56,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115049326] [2025-03-09 06:19:56,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:56,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:56,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:56,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:56,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:56,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:56,538 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 06:19:56,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:56,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115049326] [2025-03-09 06:19:56,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115049326] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:56,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707132536] [2025-03-09 06:19:56,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:56,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:56,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:56,540 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 06:19:56,542 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 06:19:56,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:56,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:56,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:56,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:56,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:56,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:56,653 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 06:19:56,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:56,703 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 06:19:56,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707132536] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:56,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:56,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-09 06:19:56,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989884640] [2025-03-09 06:19:56,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:56,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 06:19:56,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:56,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 06:19:56,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:19:56,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:56,706 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 06:19:56,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:56,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:56,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:57,506 INFO L124 PetriNetUnfolderBase]: 4661/8863 cut-off events. [2025-03-09 06:19:57,506 INFO L125 PetriNetUnfolderBase]: For 20308/20722 co-relation queries the response was YES. [2025-03-09 06:19:57,527 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 06:19:57,560 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 147 selfloop transitions, 20 changer transitions 0/182 dead transitions. [2025-03-09 06:19:57,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 182 transitions, 1351 flow [2025-03-09 06:19:57,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:19:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:19:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 349 transitions. [2025-03-09 06:19:57,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6609848484848485 [2025-03-09 06:19:57,562 INFO L175 Difference]: Start difference. First operand has 82 places, 55 transitions, 293 flow. Second operand 12 states and 349 transitions. [2025-03-09 06:19:57,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 182 transitions, 1351 flow [2025-03-09 06:19:57,584 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 06:19:57,585 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 436 flow [2025-03-09 06:19:57,586 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 06:19:57,586 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-03-09 06:19:57,586 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 436 flow [2025-03-09 06:19:57,586 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 06:19:57,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:57,586 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:57,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:19:57,787 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 06:19:57,787 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 06:19:57,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:57,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1537557922, now seen corresponding path program 1 times [2025-03-09 06:19:57,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:57,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727562984] [2025-03-09 06:19:57,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:57,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:57,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:57,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:57,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:57,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:57,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:57,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727562984] [2025-03-09 06:19:57,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727562984] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:57,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961731230] [2025-03-09 06:19:57,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:57,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:57,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:57,840 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 06:19:57,841 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 06:19:57,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:19:57,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:19:57,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:57,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:57,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:57,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:57,938 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:57,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961731230] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:57,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:57,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-09 06:19:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62715030] [2025-03-09 06:19:57,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:57,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 06:19:57,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:57,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 06:19:57,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:19:57,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:57,991 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 06:19:57,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:57,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:57,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:00,085 INFO L124 PetriNetUnfolderBase]: 12859/25293 cut-off events. [2025-03-09 06:20:00,085 INFO L125 PetriNetUnfolderBase]: For 108270/109456 co-relation queries the response was YES. [2025-03-09 06:20:00,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92833 conditions, 25293 events. 12859/25293 cut-off events. For 108270/109456 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 231114 event pairs, 571 based on Foata normal form. 1674/26876 useless extension candidates. Maximal degree in co-relation 92788. Up to 5827 conditions per place. [2025-03-09 06:20:00,259 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 356 selfloop transitions, 54 changer transitions 0/425 dead transitions. [2025-03-09 06:20:00,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 425 transitions, 3448 flow [2025-03-09 06:20:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 06:20:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-09 06:20:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 748 transitions. [2025-03-09 06:20:00,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-03-09 06:20:00,262 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 436 flow. Second operand 24 states and 748 transitions. [2025-03-09 06:20:00,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 425 transitions, 3448 flow [2025-03-09 06:20:00,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 425 transitions, 3319 flow, removed 53 selfloop flow, removed 6 redundant places. [2025-03-09 06:20:00,421 INFO L231 Difference]: Finished difference. Result has 122 places, 110 transitions, 1065 flow [2025-03-09 06:20:00,421 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1065, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2025-03-09 06:20:00,422 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2025-03-09 06:20:00,422 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 1065 flow [2025-03-09 06:20:00,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:00,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:00,422 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:00,428 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 06:20:00,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:00,622 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:00,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1331549010, now seen corresponding path program 1 times [2025-03-09 06:20:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:00,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323897883] [2025-03-09 06:20:00,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:00,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:00,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:00,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:00,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:00,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:20:00,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:00,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323897883] [2025-03-09 06:20:00,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323897883] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:20:00,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:20:00,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:20:00,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95904076] [2025-03-09 06:20:00,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:20:00,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:20:00,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:00,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:20:00,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:20:00,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-09 06:20:00,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 110 transitions, 1065 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:00,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:00,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-09 06:20:00,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:03,562 INFO L124 PetriNetUnfolderBase]: 20427/34219 cut-off events. [2025-03-09 06:20:03,563 INFO L125 PetriNetUnfolderBase]: For 169964/171158 co-relation queries the response was YES. [2025-03-09 06:20:03,705 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 06:20:03,844 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 171 selfloop transitions, 6 changer transitions 0/188 dead transitions. [2025-03-09 06:20:03,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 188 transitions, 2157 flow [2025-03-09 06:20:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:20:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:20:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-03-09 06:20:03,845 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2025-03-09 06:20:03,845 INFO L175 Difference]: Start difference. First operand has 122 places, 110 transitions, 1065 flow. Second operand 4 states and 109 transitions. [2025-03-09 06:20:03,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 188 transitions, 2157 flow [2025-03-09 06:20:04,404 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 06:20:04,406 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 862 flow [2025-03-09 06:20:04,406 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 06:20:04,406 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-03-09 06:20:04,407 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 862 flow [2025-03-09 06:20:04,407 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 06:20:04,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:04,407 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:04,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:20:04,407 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 06:20:04,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash -557180205, now seen corresponding path program 1 times [2025-03-09 06:20:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:04,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459596262] [2025-03-09 06:20:04,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:04,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:04,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:04,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:04,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:04,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:04,436 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 06:20:04,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459596262] [2025-03-09 06:20:04,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459596262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:20:04,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:20:04,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:20:04,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746384819] [2025-03-09 06:20:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:20:04,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:20:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:04,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:20:04,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:20:04,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:20:04,442 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 06:20:04,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:04,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:20:04,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:06,682 INFO L124 PetriNetUnfolderBase]: 15774/26140 cut-off events. [2025-03-09 06:20:06,682 INFO L125 PetriNetUnfolderBase]: For 149659/149659 co-relation queries the response was YES. [2025-03-09 06:20:06,750 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 06:20:06,839 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 242 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2025-03-09 06:20:06,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 264 transitions, 2764 flow [2025-03-09 06:20:06,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:20:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:20:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-03-09 06:20:06,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-09 06:20:06,840 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 862 flow. Second operand 4 states and 110 transitions. [2025-03-09 06:20:06,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 264 transitions, 2764 flow [2025-03-09 06:20:07,021 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 06:20:07,023 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 872 flow [2025-03-09 06:20:07,023 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 06:20:07,024 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-03-09 06:20:07,024 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 872 flow [2025-03-09 06:20:07,024 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 06:20:07,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:07,024 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:07,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:20:07,026 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 06:20:07,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash -620850343, now seen corresponding path program 1 times [2025-03-09 06:20:07,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:07,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989815305] [2025-03-09 06:20:07,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:07,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:20:07,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:20:07,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:07,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:07,082 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 06:20:07,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989815305] [2025-03-09 06:20:07,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989815305] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:07,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696395985] [2025-03-09 06:20:07,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:07,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:07,085 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 06:20:07,086 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 06:20:07,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:20:07,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:20:07,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:07,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:07,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:20:07,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:07,229 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 06:20:07,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:07,310 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 06:20:07,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696395985] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:07,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:07,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-03-09 06:20:07,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983468394] [2025-03-09 06:20:07,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:07,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 06:20:07,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:07,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 06:20:07,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2025-03-09 06:20:07,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:07,313 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 06:20:07,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:07,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:07,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:10,667 INFO L124 PetriNetUnfolderBase]: 17303/33357 cut-off events. [2025-03-09 06:20:10,667 INFO L125 PetriNetUnfolderBase]: For 182106/182106 co-relation queries the response was YES. [2025-03-09 06:20:10,829 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 06:20:10,933 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 330 selfloop transitions, 56 changer transitions 0/401 dead transitions. [2025-03-09 06:20:10,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 401 transitions, 3465 flow [2025-03-09 06:20:10,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 06:20:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 06:20:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 649 transitions. [2025-03-09 06:20:10,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-03-09 06:20:10,935 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 872 flow. Second operand 21 states and 649 transitions. [2025-03-09 06:20:10,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 401 transitions, 3465 flow [2025-03-09 06:20:11,464 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 06:20:11,467 INFO L231 Difference]: Finished difference. Result has 139 places, 126 transitions, 1198 flow [2025-03-09 06:20:11,467 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 06:20:11,468 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 93 predicate places. [2025-03-09 06:20:11,468 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 1198 flow [2025-03-09 06:20:11,468 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 06:20:11,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:11,468 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 06:20:11,474 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 06:20:11,668 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 06:20:11,669 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 06:20:11,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1384304146, now seen corresponding path program 1 times [2025-03-09 06:20:11,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:11,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422455138] [2025-03-09 06:20:11,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:11,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:11,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:20:11,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:20:11,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:11,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:11,743 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 06:20:11,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422455138] [2025-03-09 06:20:11,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422455138] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742304484] [2025-03-09 06:20:11,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:11,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:11,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:11,747 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 06:20:11,751 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 06:20:11,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:20:11,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:20:11,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:11,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:11,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:20:11,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:11,888 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 06:20:11,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:11,971 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 06:20:11,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742304484] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:11,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-03-09 06:20:11,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444340957] [2025-03-09 06:20:11,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:11,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 06:20:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:11,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 06:20:11,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2025-03-09 06:20:11,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:11,973 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 06:20:11,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:11,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:11,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:19,072 INFO L124 PetriNetUnfolderBase]: 33363/64531 cut-off events. [2025-03-09 06:20:19,073 INFO L125 PetriNetUnfolderBase]: For 632635/632635 co-relation queries the response was YES. [2025-03-09 06:20:19,571 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 06:20:19,944 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 563 selfloop transitions, 124 changer transitions 0/702 dead transitions. [2025-03-09 06:20:19,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 702 transitions, 6147 flow [2025-03-09 06:20:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 06:20:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-09 06:20:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1156 transitions. [2025-03-09 06:20:19,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7100737100737101 [2025-03-09 06:20:19,946 INFO L175 Difference]: Start difference. First operand has 139 places, 126 transitions, 1198 flow. Second operand 37 states and 1156 transitions. [2025-03-09 06:20:19,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 702 transitions, 6147 flow [2025-03-09 06:20:22,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 702 transitions, 6033 flow, removed 37 selfloop flow, removed 12 redundant places. [2025-03-09 06:20:22,028 INFO L231 Difference]: Finished difference. Result has 177 places, 188 transitions, 2324 flow [2025-03-09 06:20:22,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2324, PETRI_PLACES=177, PETRI_TRANSITIONS=188} [2025-03-09 06:20:22,029 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 131 predicate places. [2025-03-09 06:20:22,029 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 188 transitions, 2324 flow [2025-03-09 06:20:22,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 21.45) internal successors, (429), 20 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:22,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:22,029 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:22,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 06:20:22,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:22,230 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:22,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1107482249, now seen corresponding path program 1 times [2025-03-09 06:20:22,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:22,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833728955] [2025-03-09 06:20:22,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:22,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:20:22,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:20:22,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:22,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:22,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:22,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833728955] [2025-03-09 06:20:22,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833728955] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:22,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711986992] [2025-03-09 06:20:22,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:22,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:22,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:22,367 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:20:22,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:20:22,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:20:22,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:20:22,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:22,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:22,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:20:22,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:22,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:22,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711986992] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:22,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:22,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-03-09 06:20:22,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242542171] [2025-03-09 06:20:22,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:22,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 06:20:22,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:22,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 06:20:22,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2025-03-09 06:20:22,699 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:22,700 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 06:20:22,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:22,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:22,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand