./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/fib_unsafe-7.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7399a2144dae504b22d3bd9a68ebd91d200de1e145cd9c7db720353ffec7d306 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 13:52:58,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 13:52:58,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 13:52:58,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 13:52:58,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 13:52:58,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 13:52:58,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 13:52:58,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 13:52:58,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 13:52:58,848 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 13:52:58,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 13:52:58,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 13:52:58,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 13:52:58,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 13:52:58,849 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 13:52:58,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 13:52:58,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 13:52:58,850 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 13:52:58,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 13:52:58,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 13:52:58,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 13:52:58,850 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 13:52:58,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 13:52:58,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 13:52:58,851 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 13:52:58,851 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 13:52:58,851 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 13:52:58,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 13:52:58,851 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 13:52:58,851 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 13:52:58,851 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 13:52:58,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 13:52:58,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 13:52:58,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 13:52:58,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:52:58,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 13:52:58,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 13:52:58,853 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 13:52:58,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 13:52:58,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 13:52:58,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 13:52:58,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 13:52:58,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 13:52:58,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 13:52:58,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 13:52:58,854 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7399a2144dae504b22d3bd9a68ebd91d200de1e145cd9c7db720353ffec7d306 [2025-02-08 13:52:59,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 13:52:59,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 13:52:59,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 13:52:59,167 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 13:52:59,168 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 13:52:59,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-7.i [2025-02-08 13:53:00,433 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/626e1bfa0/a225288abea14427b59879f18472b8ce/FLAG6734173ea [2025-02-08 13:53:00,799 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 13:53:00,800 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-7.i [2025-02-08 13:53:00,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/626e1bfa0/a225288abea14427b59879f18472b8ce/FLAG6734173ea [2025-02-08 13:53:00,840 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/626e1bfa0/a225288abea14427b59879f18472b8ce [2025-02-08 13:53:00,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 13:53:00,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 13:53:00,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 13:53:00,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 13:53:00,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 13:53:00,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:53:00" (1/1) ... [2025-02-08 13:53:00,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4333af9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:00, skipping insertion in model container [2025-02-08 13:53:00,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:53:00" (1/1) ... [2025-02-08 13:53:00,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 13:53:01,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:53:01,144 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 13:53:01,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:53:01,205 INFO L204 MainTranslator]: Completed translation [2025-02-08 13:53:01,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01 WrapperNode [2025-02-08 13:53:01,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 13:53:01,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 13:53:01,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 13:53:01,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 13:53:01,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,246 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-02-08 13:53:01,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 13:53:01,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 13:53:01,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 13:53:01,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 13:53:01,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,273 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 13:53:01,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,278 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 13:53:01,282 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 13:53:01,282 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 13:53:01,282 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 13:53:01,283 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (1/1) ... [2025-02-08 13:53:01,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:53:01,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:01,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 13:53:01,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 13:53:01,344 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 13:53:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 13:53:01,345 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 13:53:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 13:53:01,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 13:53:01,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 13:53:01,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 13:53:01,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 13:53:01,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 13:53:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 13:53:01,347 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 13:53:01,466 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 13:53:01,467 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 13:53:01,673 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 13:53:01,673 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 13:53:01,782 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 13:53:01,783 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 13:53:01,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:53:01 BoogieIcfgContainer [2025-02-08 13:53:01,783 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 13:53:01,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 13:53:01,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 13:53:01,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 13:53:01,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:53:00" (1/3) ... [2025-02-08 13:53:01,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffaaea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:53:01, skipping insertion in model container [2025-02-08 13:53:01,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:01" (2/3) ... [2025-02-08 13:53:01,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffaaea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:53:01, skipping insertion in model container [2025-02-08 13:53:01,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:53:01" (3/3) ... [2025-02-08 13:53:01,793 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-7.i [2025-02-08 13:53:01,806 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 13:53:01,808 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-7.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-02-08 13:53:01,808 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 13:53:01,863 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:53:01,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2025-02-08 13:53:01,933 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2025-02-08 13:53:01,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:53:01,941 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 121 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. [2025-02-08 13:53:01,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2025-02-08 13:53:01,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2025-02-08 13:53:01,961 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:53:01,975 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;@25256ef1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:53:01,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-02-08 13:53:01,980 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:53:01,981 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-08 13:53:01,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:53:01,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:01,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:01,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:01,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2073076800, now seen corresponding path program 1 times [2025-02-08 13:53:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:02,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381556403] [2025-02-08 13:53:02,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:02,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:02,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 13:53:02,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 13:53:02,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:02,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:02,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:02,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381556403] [2025-02-08 13:53:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381556403] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:02,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:02,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:02,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700120134] [2025-02-08 13:53:02,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:02,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:02,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:02,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:02,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:02,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-08 13:53:02,369 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) [2025-02-08 13:53:02,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:02,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-08 13:53:02,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:02,743 INFO L124 PetriNetUnfolderBase]: 785/1506 cut-off events. [2025-02-08 13:53:02,743 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 13:53:02,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 1506 events. 785/1506 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9264 event pairs, 188 based on Foata normal form. 0/1151 useless extension candidates. Maximal degree in co-relation 2701. Up to 612 conditions per place. [2025-02-08 13:53:02,760 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 49 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2025-02-08 13:53:02,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 259 flow [2025-02-08 13:53:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2025-02-08 13:53:02,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2025-02-08 13:53:02,776 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 134 transitions. [2025-02-08 13:53:02,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 259 flow [2025-02-08 13:53:02,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:02,787 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-02-08 13:53:02,789 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} [2025-02-08 13:53:02,793 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-02-08 13:53:02,793 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-02-08 13:53:02,793 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) [2025-02-08 13:53:02,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:02,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:02,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 13:53:02,794 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:02,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash -638010556, now seen corresponding path program 1 times [2025-02-08 13:53:02,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:02,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441698396] [2025-02-08 13:53:02,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:02,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:02,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:53:02,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:53:02,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:02,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:02,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441698396] [2025-02-08 13:53:02,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441698396] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:02,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:02,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:02,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451090978] [2025-02-08 13:53:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:02,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:02,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:02,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:02,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:02,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 13:53:02,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 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) [2025-02-08 13:53:02,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:02,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 13:53:02,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:03,238 INFO L124 PetriNetUnfolderBase]: 1057/1794 cut-off events. [2025-02-08 13:53:03,238 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2025-02-08 13:53:03,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3947 conditions, 1794 events. 1057/1794 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10382 event pairs, 261 based on Foata normal form. 88/1559 useless extension candidates. Maximal degree in co-relation 3929. Up to 935 conditions per place. [2025-02-08 13:53:03,254 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2025-02-08 13:53:03,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 329 flow [2025-02-08 13:53:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-02-08 13:53:03,257 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-02-08 13:53:03,257 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 4 states and 128 transitions. [2025-02-08 13:53:03,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 329 flow [2025-02-08 13:53:03,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 329 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:53:03,263 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2025-02-08 13:53:03,263 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=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2025-02-08 13:53:03,264 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2025-02-08 13:53:03,265 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2025-02-08 13:53:03,265 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) [2025-02-08 13:53:03,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:03,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:03,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 13:53:03,266 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:03,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:03,266 INFO L85 PathProgramCache]: Analyzing trace with hash -665946343, now seen corresponding path program 1 times [2025-02-08 13:53:03,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:03,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285854770] [2025-02-08 13:53:03,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:03,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:53:03,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:53:03,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:03,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:03,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:03,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285854770] [2025-02-08 13:53:03,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285854770] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:03,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:03,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:53:03,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374882216] [2025-02-08 13:53:03,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:03,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:53:03,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:03,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:53:03,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:53:03,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-02-08 13:53:03,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 143 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) [2025-02-08 13:53:03,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:03,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-02-08 13:53:03,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:03,626 INFO L124 PetriNetUnfolderBase]: 1381/2558 cut-off events. [2025-02-08 13:53:03,627 INFO L125 PetriNetUnfolderBase]: For 593/786 co-relation queries the response was YES. [2025-02-08 13:53:03,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5759 conditions, 2558 events. 1381/2558 cut-off events. For 593/786 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17563 event pairs, 468 based on Foata normal form. 120/2206 useless extension candidates. Maximal degree in co-relation 5737. Up to 1179 conditions per place. [2025-02-08 13:53:03,649 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 48 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2025-02-08 13:53:03,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 310 flow [2025-02-08 13:53:03,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:53:03,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:53:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-02-08 13:53:03,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-02-08 13:53:03,651 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 3 states and 97 transitions. [2025-02-08 13:53:03,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 310 flow [2025-02-08 13:53:03,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 67 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:03,653 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2025-02-08 13:53:03,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2025-02-08 13:53:03,654 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2025-02-08 13:53:03,654 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2025-02-08 13:53:03,654 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) [2025-02-08 13:53:03,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:03,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:03,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 13:53:03,654 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)] === [2025-02-08 13:53:03,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:03,655 INFO L85 PathProgramCache]: Analyzing trace with hash 830500029, now seen corresponding path program 1 times [2025-02-08 13:53:03,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:03,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799898296] [2025-02-08 13:53:03,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:03,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:03,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 13:53:03,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 13:53:03,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:03,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:03,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799898296] [2025-02-08 13:53:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799898296] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:03,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:03,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:53:03,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094749480] [2025-02-08 13:53:03,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:03,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:53:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:03,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:53:03,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:53:03,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-02-08 13:53:03,760 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) [2025-02-08 13:53:03,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:03,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-02-08 13:53:03,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:04,033 INFO L124 PetriNetUnfolderBase]: 1381/2551 cut-off events. [2025-02-08 13:53:04,033 INFO L125 PetriNetUnfolderBase]: For 717/910 co-relation queries the response was YES. [2025-02-08 13:53:04,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5934 conditions, 2551 events. 1381/2551 cut-off events. For 717/910 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17505 event pairs, 468 based on Foata normal form. 111/2190 useless extension candidates. Maximal degree in co-relation 5910. Up to 1179 conditions per place. [2025-02-08 13:53:04,047 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 48 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2025-02-08 13:53:04,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 317 flow [2025-02-08 13:53:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:53:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:53:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-02-08 13:53:04,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-02-08 13:53:04,049 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 97 transitions. [2025-02-08 13:53:04,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 317 flow [2025-02-08 13:53:04,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:04,051 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2025-02-08 13:53:04,051 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} [2025-02-08 13:53:04,052 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-02-08 13:53:04,052 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2025-02-08 13:53:04,052 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) [2025-02-08 13:53:04,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:04,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:04,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 13:53:04,053 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:04,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash -24302621, now seen corresponding path program 1 times [2025-02-08 13:53:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:04,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754397241] [2025-02-08 13:53:04,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:04,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:04,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:53:04,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:53:04,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:04,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:04,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:04,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754397241] [2025-02-08 13:53:04,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754397241] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:04,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:04,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:04,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463270631] [2025-02-08 13:53:04,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:04,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:04,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:04,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:04,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:04,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-02-08 13:53:04,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 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) [2025-02-08 13:53:04,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:04,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-02-08 13:53:04,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:04,415 INFO L124 PetriNetUnfolderBase]: 1257/2365 cut-off events. [2025-02-08 13:53:04,415 INFO L125 PetriNetUnfolderBase]: For 792/967 co-relation queries the response was YES. [2025-02-08 13:53:04,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5597 conditions, 2365 events. 1257/2365 cut-off events. For 792/967 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15995 event pairs, 159 based on Foata normal form. 183/2131 useless extension candidates. Maximal degree in co-relation 5571. Up to 1365 conditions per place. [2025-02-08 13:53:04,430 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2025-02-08 13:53:04,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 407 flow [2025-02-08 13:53:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-02-08 13:53:04,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-02-08 13:53:04,433 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 124 transitions. [2025-02-08 13:53:04,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 407 flow [2025-02-08 13:53:04,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:04,439 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 175 flow [2025-02-08 13:53:04,439 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2025-02-08 13:53:04,440 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-02-08 13:53:04,441 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 175 flow [2025-02-08 13:53:04,441 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) [2025-02-08 13:53:04,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:04,442 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:04,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 13:53:04,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:04,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2204279, now seen corresponding path program 1 times [2025-02-08 13:53:04,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:04,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584903685] [2025-02-08 13:53:04,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:04,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:53:04,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:53:04,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:04,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:04,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:04,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584903685] [2025-02-08 13:53:04,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584903685] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:04,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:04,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:04,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346066] [2025-02-08 13:53:04,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:04,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:04,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:04,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:04,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:04,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 13:53:04,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 175 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) [2025-02-08 13:53:04,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:04,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 13:53:04,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:04,876 INFO L124 PetriNetUnfolderBase]: 2065/3462 cut-off events. [2025-02-08 13:53:04,877 INFO L125 PetriNetUnfolderBase]: For 2092/2760 co-relation queries the response was YES. [2025-02-08 13:53:04,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9166 conditions, 3462 events. 2065/3462 cut-off events. For 2092/2760 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22650 event pairs, 457 based on Foata normal form. 255/3146 useless extension candidates. Maximal degree in co-relation 9138. Up to 2001 conditions per place. [2025-02-08 13:53:04,900 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 68 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2025-02-08 13:53:04,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 457 flow [2025-02-08 13:53:04,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-02-08 13:53:04,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-02-08 13:53:04,903 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 175 flow. Second operand 4 states and 124 transitions. [2025-02-08 13:53:04,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 457 flow [2025-02-08 13:53:04,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 449 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:04,909 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 195 flow [2025-02-08 13:53:04,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2025-02-08 13:53:04,911 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2025-02-08 13:53:04,911 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 195 flow [2025-02-08 13:53:04,911 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) [2025-02-08 13:53:04,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:04,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:04,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 13:53:04,911 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:04,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1775597591, now seen corresponding path program 1 times [2025-02-08 13:53:04,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:04,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137047039] [2025-02-08 13:53:04,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:04,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:04,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 13:53:04,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 13:53:04,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:04,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137047039] [2025-02-08 13:53:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137047039] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:05,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 13:53:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158150607] [2025-02-08 13:53:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:05,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:53:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:05,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:53:05,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:53:05,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-08 13:53:05,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 195 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) [2025-02-08 13:53:05,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:05,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-08 13:53:05,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:05,273 INFO L124 PetriNetUnfolderBase]: 1279/2478 cut-off events. [2025-02-08 13:53:05,273 INFO L125 PetriNetUnfolderBase]: For 1291/1650 co-relation queries the response was YES. [2025-02-08 13:53:05,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6721 conditions, 2478 events. 1279/2478 cut-off events. For 1291/1650 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16646 event pairs, 183 based on Foata normal form. 56/2173 useless extension candidates. Maximal degree in co-relation 6691. Up to 954 conditions per place. [2025-02-08 13:53:05,290 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2025-02-08 13:53:05,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 506 flow [2025-02-08 13:53:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:53:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:53:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-02-08 13:53:05,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-02-08 13:53:05,291 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 195 flow. Second operand 5 states and 160 transitions. [2025-02-08 13:53:05,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 506 flow [2025-02-08 13:53:05,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:05,297 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2025-02-08 13:53:05,298 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} [2025-02-08 13:53:05,298 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2025-02-08 13:53:05,298 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2025-02-08 13:53:05,298 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) [2025-02-08 13:53:05,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:05,299 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:05,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 13:53:05,299 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:05,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash 499705842, now seen corresponding path program 1 times [2025-02-08 13:53:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:05,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660842153] [2025-02-08 13:53:05,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:05,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 13:53:05,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 13:53:05,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:05,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:05,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:05,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660842153] [2025-02-08 13:53:05,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660842153] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:05,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:05,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 13:53:05,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418367216] [2025-02-08 13:53:05,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:05,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:53:05,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:05,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:53:05,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:53:05,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-08 13:53:05,388 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) [2025-02-08 13:53:05,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:05,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-08 13:53:05,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:05,695 INFO L124 PetriNetUnfolderBase]: 1331/2624 cut-off events. [2025-02-08 13:53:05,695 INFO L125 PetriNetUnfolderBase]: For 1959/2239 co-relation queries the response was YES. [2025-02-08 13:53:05,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7424 conditions, 2624 events. 1331/2624 cut-off events. For 1959/2239 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18057 event pairs, 255 based on Foata normal form. 90/2529 useless extension candidates. Maximal degree in co-relation 7391. Up to 1260 conditions per place. [2025-02-08 13:53:05,719 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2025-02-08 13:53:05,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 534 flow [2025-02-08 13:53:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:53:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:53:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-02-08 13:53:05,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2025-02-08 13:53:05,721 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 161 transitions. [2025-02-08 13:53:05,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 534 flow [2025-02-08 13:53:05,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:05,730 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2025-02-08 13:53:05,731 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} [2025-02-08 13:53:05,732 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2025-02-08 13:53:05,733 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2025-02-08 13:53:05,734 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) [2025-02-08 13:53:05,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:05,734 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:05,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 13:53:05,734 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:05,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1540021445, now seen corresponding path program 1 times [2025-02-08 13:53:05,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:05,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454598286] [2025-02-08 13:53:05,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:05,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:05,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 13:53:05,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 13:53:05,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:05,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:05,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:05,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454598286] [2025-02-08 13:53:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454598286] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:05,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:05,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 13:53:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285400597] [2025-02-08 13:53:05,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:05,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:53:05,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:05,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:53:05,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:53:05,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-08 13:53:05,840 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) [2025-02-08 13:53:05,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:05,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-08 13:53:05,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:06,107 INFO L124 PetriNetUnfolderBase]: 1187/2352 cut-off events. [2025-02-08 13:53:06,108 INFO L125 PetriNetUnfolderBase]: For 2370/2623 co-relation queries the response was YES. [2025-02-08 13:53:06,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 2352 events. 1187/2352 cut-off events. For 2370/2623 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15920 event pairs, 303 based on Foata normal form. 88/2287 useless extension candidates. Maximal degree in co-relation 6929. Up to 1384 conditions per place. [2025-02-08 13:53:06,123 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 56 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2025-02-08 13:53:06,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 464 flow [2025-02-08 13:53:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:53:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:53:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-02-08 13:53:06,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6636363636363637 [2025-02-08 13:53:06,124 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 146 transitions. [2025-02-08 13:53:06,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 464 flow [2025-02-08 13:53:06,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 449 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:06,129 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2025-02-08 13:53:06,129 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} [2025-02-08 13:53:06,130 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2025-02-08 13:53:06,130 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2025-02-08 13:53:06,130 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) [2025-02-08 13:53:06,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:06,130 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:06,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 13:53:06,131 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:06,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash 500043762, now seen corresponding path program 1 times [2025-02-08 13:53:06,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:06,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834378301] [2025-02-08 13:53:06,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:06,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:06,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 13:53:06,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 13:53:06,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:06,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:06,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:06,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834378301] [2025-02-08 13:53:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834378301] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:06,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:06,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 13:53:06,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996387944] [2025-02-08 13:53:06,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:06,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:53:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:06,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:53:06,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:53:06,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-08 13:53:06,199 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) [2025-02-08 13:53:06,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:06,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-08 13:53:06,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:06,470 INFO L124 PetriNetUnfolderBase]: 1235/2440 cut-off events. [2025-02-08 13:53:06,470 INFO L125 PetriNetUnfolderBase]: For 2795/3057 co-relation queries the response was YES. [2025-02-08 13:53:06,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 2440 events. 1235/2440 cut-off events. For 2795/3057 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 16528 event pairs, 295 based on Foata normal form. 88/2431 useless extension candidates. Maximal degree in co-relation 7255. Up to 1400 conditions per place. [2025-02-08 13:53:06,486 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 66 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2025-02-08 13:53:06,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 538 flow [2025-02-08 13:53:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:53:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:53:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2025-02-08 13:53:06,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7136363636363636 [2025-02-08 13:53:06,488 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 157 transitions. [2025-02-08 13:53:06,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 538 flow [2025-02-08 13:53:06,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 524 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 13:53:06,494 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2025-02-08 13:53:06,494 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} [2025-02-08 13:53:06,494 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-02-08 13:53:06,495 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2025-02-08 13:53:06,495 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) [2025-02-08 13:53:06,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:06,495 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:06,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 13:53:06,495 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:06,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:06,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1009020163, now seen corresponding path program 1 times [2025-02-08 13:53:06,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:06,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899404653] [2025-02-08 13:53:06,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:06,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:06,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 13:53:06,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 13:53:06,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:06,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:06,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899404653] [2025-02-08 13:53:06,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899404653] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338414875] [2025-02-08 13:53:06,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:06,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:06,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:06,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 13:53:06,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 13:53:06,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 13:53:06,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:06,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:06,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 13:53:06,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:06,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 13:53:06,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338414875] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:06,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 13:53:06,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 13:53:06,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148620224] [2025-02-08 13:53:06,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:06,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:53:06,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:06,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:53:06,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 13:53:06,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 13:53:06,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 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) [2025-02-08 13:53:06,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:06,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 13:53:06,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:07,050 INFO L124 PetriNetUnfolderBase]: 1657/2878 cut-off events. [2025-02-08 13:53:07,050 INFO L125 PetriNetUnfolderBase]: For 4686/5154 co-relation queries the response was YES. [2025-02-08 13:53:07,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9305 conditions, 2878 events. 1657/2878 cut-off events. For 4686/5154 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 18336 event pairs, 359 based on Foata normal form. 138/2914 useless extension candidates. Maximal degree in co-relation 9270. Up to 1194 conditions per place. [2025-02-08 13:53:07,072 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2025-02-08 13:53:07,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 110 transitions, 701 flow [2025-02-08 13:53:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-02-08 13:53:07,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-02-08 13:53:07,074 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 6 states and 170 transitions. [2025-02-08 13:53:07,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 110 transitions, 701 flow [2025-02-08 13:53:07,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 690 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:07,084 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 260 flow [2025-02-08 13:53:07,084 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2025-02-08 13:53:07,086 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2025-02-08 13:53:07,086 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 260 flow [2025-02-08 13:53:07,086 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) [2025-02-08 13:53:07,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:07,086 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:07,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 13:53:07,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-08 13:53:07,291 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:07,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1850290601, now seen corresponding path program 1 times [2025-02-08 13:53:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:07,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295382288] [2025-02-08 13:53:07,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:07,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 13:53:07,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 13:53:07,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:07,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:07,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295382288] [2025-02-08 13:53:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295382288] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619844473] [2025-02-08 13:53:07,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:07,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:07,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:07,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 13:53:07,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 13:53:07,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 13:53:07,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:07,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:07,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 13:53:07,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:07,500 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 13:53:07,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619844473] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:07,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 13:53:07,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-02-08 13:53:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800465051] [2025-02-08 13:53:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:07,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:07,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:07,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:07,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-08 13:53:07,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-02-08 13:53:07,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 260 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) [2025-02-08 13:53:07,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:07,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-02-08 13:53:07,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:07,727 INFO L124 PetriNetUnfolderBase]: 1235/2529 cut-off events. [2025-02-08 13:53:07,727 INFO L125 PetriNetUnfolderBase]: For 4234/4437 co-relation queries the response was YES. [2025-02-08 13:53:07,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7683 conditions, 2529 events. 1235/2529 cut-off events. For 4234/4437 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18003 event pairs, 187 based on Foata normal form. 124/2616 useless extension candidates. Maximal degree in co-relation 7648. Up to 1444 conditions per place. [2025-02-08 13:53:07,744 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 57 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2025-02-08 13:53:07,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 505 flow [2025-02-08 13:53:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-02-08 13:53:07,746 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-02-08 13:53:07,746 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 260 flow. Second operand 4 states and 111 transitions. [2025-02-08 13:53:07,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 505 flow [2025-02-08 13:53:07,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 499 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:07,751 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 255 flow [2025-02-08 13:53:07,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2025-02-08 13:53:07,751 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2025-02-08 13:53:07,751 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 255 flow [2025-02-08 13:53:07,752 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) [2025-02-08 13:53:07,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:07,752 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:07,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 13:53:07,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:07,953 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:07,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1214854205, now seen corresponding path program 1 times [2025-02-08 13:53:07,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:07,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367686808] [2025-02-08 13:53:07,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:07,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:07,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 13:53:07,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 13:53:07,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:07,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 13:53:07,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:07,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367686808] [2025-02-08 13:53:07,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367686808] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:07,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:07,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:07,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664107447] [2025-02-08 13:53:07,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:07,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:07,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:07,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:07,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-02-08 13:53:07,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 255 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) [2025-02-08 13:53:07,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:07,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-02-08 13:53:07,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:08,284 INFO L124 PetriNetUnfolderBase]: 1837/3197 cut-off events. [2025-02-08 13:53:08,284 INFO L125 PetriNetUnfolderBase]: For 5250/5545 co-relation queries the response was YES. [2025-02-08 13:53:08,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10375 conditions, 3197 events. 1837/3197 cut-off events. For 5250/5545 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20348 event pairs, 893 based on Foata normal form. 130/3272 useless extension candidates. Maximal degree in co-relation 10340. Up to 1765 conditions per place. [2025-02-08 13:53:08,304 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 73 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2025-02-08 13:53:08,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 591 flow [2025-02-08 13:53:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-02-08 13:53:08,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6647727272727273 [2025-02-08 13:53:08,306 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 255 flow. Second operand 4 states and 117 transitions. [2025-02-08 13:53:08,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 591 flow [2025-02-08 13:53:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 582 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:08,313 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 264 flow [2025-02-08 13:53:08,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2025-02-08 13:53:08,314 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2025-02-08 13:53:08,314 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 264 flow [2025-02-08 13:53:08,314 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) [2025-02-08 13:53:08,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:08,314 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:08,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 13:53:08,314 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:08,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:08,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1524433965, now seen corresponding path program 1 times [2025-02-08 13:53:08,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:08,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555251131] [2025-02-08 13:53:08,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:08,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:08,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 13:53:08,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 13:53:08,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:08,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:08,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555251131] [2025-02-08 13:53:08,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555251131] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488188947] [2025-02-08 13:53:08,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:08,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:08,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:08,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:08,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 13:53:08,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 13:53:08,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 13:53:08,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:08,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:08,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 13:53:08,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:08,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:53:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488188947] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:53:08,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:53:08,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-02-08 13:53:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526432870] [2025-02-08 13:53:08,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:53:08,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 13:53:08,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:08,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 13:53:08,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-02-08 13:53:08,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-02-08 13:53:08,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 264 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) [2025-02-08 13:53:08,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:08,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-02-08 13:53:08,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:09,223 INFO L124 PetriNetUnfolderBase]: 3515/6772 cut-off events. [2025-02-08 13:53:09,224 INFO L125 PetriNetUnfolderBase]: For 13266/13814 co-relation queries the response was YES. [2025-02-08 13:53:09,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20644 conditions, 6772 events. 3515/6772 cut-off events. For 13266/13814 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 52688 event pairs, 187 based on Foata normal form. 402/7143 useless extension candidates. Maximal degree in co-relation 20609. Up to 1445 conditions per place. [2025-02-08 13:53:09,267 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 135 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2025-02-08 13:53:09,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 156 transitions, 1120 flow [2025-02-08 13:53:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:09,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2025-02-08 13:53:09,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2025-02-08 13:53:09,270 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 264 flow. Second operand 6 states and 195 transitions. [2025-02-08 13:53:09,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 156 transitions, 1120 flow [2025-02-08 13:53:09,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 156 transitions, 1104 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:09,280 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 292 flow [2025-02-08 13:53:09,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=256, 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=292, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-02-08 13:53:09,281 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-02-08 13:53:09,281 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 292 flow [2025-02-08 13:53:09,281 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) [2025-02-08 13:53:09,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:09,281 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:09,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 13:53:09,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:09,483 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:09,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash 12812915, now seen corresponding path program 1 times [2025-02-08 13:53:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:09,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685321040] [2025-02-08 13:53:09,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:09,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:09,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 13:53:09,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 13:53:09,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:09,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 13:53:09,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:09,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685321040] [2025-02-08 13:53:09,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685321040] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:09,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678298706] [2025-02-08 13:53:09,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:09,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:09,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:09,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:09,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 13:53:09,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 13:53:09,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 13:53:09,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:09,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:09,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 13:53:09,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 13:53:09,637 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 13:53:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678298706] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:09,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 13:53:09,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 13:53:09,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668925237] [2025-02-08 13:53:09,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:09,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:53:09,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:09,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:53:09,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 13:53:09,649 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-02-08 13:53:09,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 292 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) [2025-02-08 13:53:09,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:09,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-02-08 13:53:09,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:10,353 INFO L124 PetriNetUnfolderBase]: 3819/6848 cut-off events. [2025-02-08 13:53:10,354 INFO L125 PetriNetUnfolderBase]: For 14764/15364 co-relation queries the response was YES. [2025-02-08 13:53:10,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22346 conditions, 6848 events. 3819/6848 cut-off events. For 14764/15364 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 50070 event pairs, 187 based on Foata normal form. 418/7007 useless extension candidates. Maximal degree in co-relation 22307. Up to 3648 conditions per place. [2025-02-08 13:53:10,511 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 99 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2025-02-08 13:53:10,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 122 transitions, 895 flow [2025-02-08 13:53:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2025-02-08 13:53:10,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325757575757576 [2025-02-08 13:53:10,513 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 292 flow. Second operand 6 states and 167 transitions. [2025-02-08 13:53:10,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 122 transitions, 895 flow [2025-02-08 13:53:10,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 883 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:10,526 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 292 flow [2025-02-08 13:53:10,526 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=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2025-02-08 13:53:10,526 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2025-02-08 13:53:10,526 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 292 flow [2025-02-08 13:53:10,526 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) [2025-02-08 13:53:10,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:10,527 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:10,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 13:53:10,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 13:53:10,727 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:10,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash 907754235, now seen corresponding path program 1 times [2025-02-08 13:53:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035363969] [2025-02-08 13:53:10,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:10,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 13:53:10,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 13:53:10,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:10,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 13:53:10,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:10,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035363969] [2025-02-08 13:53:10,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035363969] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:10,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189890721] [2025-02-08 13:53:10,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:10,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:10,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:10,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:10,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 13:53:10,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 13:53:10,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 13:53:10,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:10,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:10,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 13:53:10,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 13:53:10,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 13:53:10,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189890721] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:10,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 13:53:10,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 13:53:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361202303] [2025-02-08 13:53:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:10,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:53:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:10,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:53:10,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 13:53:10,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 13:53:10,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 292 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) [2025-02-08 13:53:10,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:10,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 13:53:10,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:11,422 INFO L124 PetriNetUnfolderBase]: 4507/7614 cut-off events. [2025-02-08 13:53:11,422 INFO L125 PetriNetUnfolderBase]: For 16235/16487 co-relation queries the response was YES. [2025-02-08 13:53:11,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25730 conditions, 7614 events. 4507/7614 cut-off events. For 16235/16487 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 52577 event pairs, 999 based on Foata normal form. 198/7515 useless extension candidates. Maximal degree in co-relation 25691. Up to 3212 conditions per place. [2025-02-08 13:53:11,463 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 96 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2025-02-08 13:53:11,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 827 flow [2025-02-08 13:53:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2025-02-08 13:53:11,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-02-08 13:53:11,465 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 292 flow. Second operand 6 states and 164 transitions. [2025-02-08 13:53:11,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 827 flow [2025-02-08 13:53:11,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 813 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:11,476 INFO L231 Difference]: Finished difference. Result has 82 places, 55 transitions, 293 flow [2025-02-08 13:53:11,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=82, PETRI_TRANSITIONS=55} [2025-02-08 13:53:11,477 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2025-02-08 13:53:11,477 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 55 transitions, 293 flow [2025-02-08 13:53:11,477 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) [2025-02-08 13:53:11,477 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:11,477 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:11,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 13:53:11,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 13:53:11,678 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:11,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:11,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1485803986, now seen corresponding path program 1 times [2025-02-08 13:53:11,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:11,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153517310] [2025-02-08 13:53:11,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:11,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:11,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 13:53:11,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 13:53:11,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:11,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:11,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:11,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153517310] [2025-02-08 13:53:11,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153517310] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:11,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892783813] [2025-02-08 13:53:11,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:11,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:11,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:11,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:11,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 13:53:11,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 13:53:11,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 13:53:11,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:11,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:11,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 13:53:11,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:11,921 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 13:53:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892783813] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:11,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 13:53:11,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-02-08 13:53:11,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71254957] [2025-02-08 13:53:11,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:11,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:53:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:11,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:53:11,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 13:53:11,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-08 13:53:11,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 55 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:11,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:11,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-08 13:53:11,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:12,447 INFO L124 PetriNetUnfolderBase]: 3979/7356 cut-off events. [2025-02-08 13:53:12,447 INFO L125 PetriNetUnfolderBase]: For 16873/17218 co-relation queries the response was YES. [2025-02-08 13:53:12,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24971 conditions, 7356 events. 3979/7356 cut-off events. For 16873/17218 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 53915 event pairs, 905 based on Foata normal form. 440/7707 useless extension candidates. Maximal degree in co-relation 24932. Up to 2912 conditions per place. [2025-02-08 13:53:12,481 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 70 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2025-02-08 13:53:12,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 665 flow [2025-02-08 13:53:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-02-08 13:53:12,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-02-08 13:53:12,483 INFO L175 Difference]: Start difference. First operand has 82 places, 55 transitions, 293 flow. Second operand 6 states and 170 transitions. [2025-02-08 13:53:12,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 665 flow [2025-02-08 13:53:12,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 655 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 13:53:12,498 INFO L231 Difference]: Finished difference. Result has 83 places, 55 transitions, 316 flow [2025-02-08 13:53:12,498 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=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=83, PETRI_TRANSITIONS=55} [2025-02-08 13:53:12,498 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2025-02-08 13:53:12,498 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 55 transitions, 316 flow [2025-02-08 13:53:12,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:12,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:12,499 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:12,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 13:53:12,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-08 13:53:12,699 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:12,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash -819738449, now seen corresponding path program 1 times [2025-02-08 13:53:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:12,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802578509] [2025-02-08 13:53:12,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:12,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:12,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 13:53:12,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 13:53:12,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:12,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:12,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:12,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802578509] [2025-02-08 13:53:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802578509] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:12,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493419968] [2025-02-08 13:53:12,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:12,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:12,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:12,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:12,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 13:53:12,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 13:53:12,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 13:53:12,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:12,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:12,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 13:53:12,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:12,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:53:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:13,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493419968] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:53:13,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:53:13,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-02-08 13:53:13,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033349742] [2025-02-08 13:53:13,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:53:13,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 13:53:13,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:13,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 13:53:13,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2025-02-08 13:53:13,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-08 13:53:13,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 55 transitions, 316 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) [2025-02-08 13:53:13,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:13,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-08 13:53:13,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:15,456 INFO L124 PetriNetUnfolderBase]: 11473/22876 cut-off events. [2025-02-08 13:53:15,456 INFO L125 PetriNetUnfolderBase]: For 65429/66417 co-relation queries the response was YES. [2025-02-08 13:53:15,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78249 conditions, 22876 events. 11473/22876 cut-off events. For 65429/66417 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 207881 event pairs, 615 based on Foata normal form. 1586/24333 useless extension candidates. Maximal degree in co-relation 78208. Up to 4815 conditions per place. [2025-02-08 13:53:15,581 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 348 selfloop transitions, 47 changer transitions 0/410 dead transitions. [2025-02-08 13:53:15,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 410 transitions, 3139 flow [2025-02-08 13:53:15,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 13:53:15,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-08 13:53:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 748 transitions. [2025-02-08 13:53:15,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-02-08 13:53:15,584 INFO L175 Difference]: Start difference. First operand has 83 places, 55 transitions, 316 flow. Second operand 24 states and 748 transitions. [2025-02-08 13:53:15,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 410 transitions, 3139 flow [2025-02-08 13:53:15,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 410 transitions, 3090 flow, removed 19 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:15,688 INFO L231 Difference]: Finished difference. Result has 116 places, 95 transitions, 874 flow [2025-02-08 13:53:15,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=874, PETRI_PLACES=116, PETRI_TRANSITIONS=95} [2025-02-08 13:53:15,689 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2025-02-08 13:53:15,689 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 95 transitions, 874 flow [2025-02-08 13:53:15,690 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) [2025-02-08 13:53:15,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:15,690 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:15,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 13:53:15,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:15,891 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:15,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:15,891 INFO L85 PathProgramCache]: Analyzing trace with hash 397200565, now seen corresponding path program 1 times [2025-02-08 13:53:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:15,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261045000] [2025-02-08 13:53:15,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:15,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:15,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 13:53:15,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 13:53:15,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:15,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 13:53:15,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:15,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261045000] [2025-02-08 13:53:15,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261045000] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:15,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:15,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381709480] [2025-02-08 13:53:15,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:15,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:15,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:15,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:15,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 13:53:15,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 95 transitions, 874 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) [2025-02-08 13:53:15,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:15,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 13:53:15,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:18,267 INFO L124 PetriNetUnfolderBase]: 14073/23733 cut-off events. [2025-02-08 13:53:18,268 INFO L125 PetriNetUnfolderBase]: For 249792/250843 co-relation queries the response was YES. [2025-02-08 13:53:18,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107594 conditions, 23733 events. 14073/23733 cut-off events. For 249792/250843 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 189977 event pairs, 2570 based on Foata normal form. 783/24346 useless extension candidates. Maximal degree in co-relation 107539. Up to 12497 conditions per place. [2025-02-08 13:53:18,432 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 197 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2025-02-08 13:53:18,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 219 transitions, 2712 flow [2025-02-08 13:53:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-08 13:53:18,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-02-08 13:53:18,433 INFO L175 Difference]: Start difference. First operand has 116 places, 95 transitions, 874 flow. Second operand 4 states and 110 transitions. [2025-02-08 13:53:18,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 219 transitions, 2712 flow [2025-02-08 13:53:18,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 219 transitions, 2142 flow, removed 238 selfloop flow, removed 9 redundant places. [2025-02-08 13:53:18,721 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 698 flow [2025-02-08 13:53:18,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2025-02-08 13:53:18,722 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2025-02-08 13:53:18,722 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 698 flow [2025-02-08 13:53:18,722 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) [2025-02-08 13:53:18,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:18,722 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:18,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 13:53:18,722 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:18,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1924389552, now seen corresponding path program 1 times [2025-02-08 13:53:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:18,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428895831] [2025-02-08 13:53:18,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:18,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:18,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 13:53:18,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 13:53:18,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:18,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 13:53:18,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:18,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428895831] [2025-02-08 13:53:18,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428895831] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:18,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:18,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:18,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348238214] [2025-02-08 13:53:18,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:18,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:18,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:18,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:18,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:18,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-02-08 13:53:18,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 698 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) [2025-02-08 13:53:18,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:18,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-02-08 13:53:18,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:21,696 INFO L124 PetriNetUnfolderBase]: 18183/30302 cut-off events. [2025-02-08 13:53:21,696 INFO L125 PetriNetUnfolderBase]: For 207047/207047 co-relation queries the response was YES. [2025-02-08 13:53:21,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123207 conditions, 30302 events. 18183/30302 cut-off events. For 207047/207047 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 245442 event pairs, 7030 based on Foata normal form. 1056/30620 useless extension candidates. Maximal degree in co-relation 123155. Up to 13973 conditions per place. [2025-02-08 13:53:21,889 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 150 selfloop transitions, 6 changer transitions 0/167 dead transitions. [2025-02-08 13:53:21,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 167 transitions, 1550 flow [2025-02-08 13:53:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:21,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-02-08 13:53:21,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2025-02-08 13:53:21,891 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 698 flow. Second operand 4 states and 109 transitions. [2025-02-08 13:53:21,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 167 transitions, 1550 flow [2025-02-08 13:53:22,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 167 transitions, 1508 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:22,215 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 696 flow [2025-02-08 13:53:22,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=696, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2025-02-08 13:53:22,215 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2025-02-08 13:53:22,215 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 696 flow [2025-02-08 13:53:22,216 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) [2025-02-08 13:53:22,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:22,216 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:22,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 13:53:22,216 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:22,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash -941257590, now seen corresponding path program 1 times [2025-02-08 13:53:22,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:22,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093798595] [2025-02-08 13:53:22,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:22,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:22,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 13:53:22,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 13:53:22,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:22,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:22,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:22,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093798595] [2025-02-08 13:53:22,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093798595] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:22,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996633495] [2025-02-08 13:53:22,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:22,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:22,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:22,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:22,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 13:53:22,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 13:53:22,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 13:53:22,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:22,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:22,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 13:53:22,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:22,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:53:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:22,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996633495] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:53:22,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:53:22,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-02-08 13:53:22,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618693343] [2025-02-08 13:53:22,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:53:22,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 13:53:22,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:22,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 13:53:22,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2025-02-08 13:53:22,577 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-08 13:53:22,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 696 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) [2025-02-08 13:53:22,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:22,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-08 13:53:22,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:25,976 INFO L124 PetriNetUnfolderBase]: 16225/31342 cut-off events. [2025-02-08 13:53:25,976 INFO L125 PetriNetUnfolderBase]: For 314419/314419 co-relation queries the response was YES. [2025-02-08 13:53:26,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128307 conditions, 31342 events. 16225/31342 cut-off events. For 314419/314419 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 287511 event pairs, 659 based on Foata normal form. 1108/32211 useless extension candidates. Maximal degree in co-relation 128254. Up to 9039 conditions per place. [2025-02-08 13:53:26,665 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 322 selfloop transitions, 54 changer transitions 0/391 dead transitions. [2025-02-08 13:53:26,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 391 transitions, 3183 flow [2025-02-08 13:53:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 13:53:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 13:53:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 649 transitions. [2025-02-08 13:53:26,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-02-08 13:53:26,668 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 696 flow. Second operand 21 states and 649 transitions. [2025-02-08 13:53:26,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 391 transitions, 3183 flow [2025-02-08 13:53:27,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 391 transitions, 3158 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:27,089 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 1090 flow [2025-02-08 13:53:27,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1090, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2025-02-08 13:53:27,089 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 87 predicate places. [2025-02-08 13:53:27,090 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 1090 flow [2025-02-08 13:53:27,090 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) [2025-02-08 13:53:27,090 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:27,090 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] [2025-02-08 13:53:27,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 13:53:27,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:27,291 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:27,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1678961678, now seen corresponding path program 1 times [2025-02-08 13:53:27,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:27,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562335057] [2025-02-08 13:53:27,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:27,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:27,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 13:53:27,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 13:53:27,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:27,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:27,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:27,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562335057] [2025-02-08 13:53:27,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562335057] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:27,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502797245] [2025-02-08 13:53:27,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:27,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:27,384 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:27,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 13:53:27,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 13:53:27,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 13:53:27,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:27,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:27,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 13:53:27,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:27,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:53:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:27,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502797245] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:53:27,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:53:27,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-02-08 13:53:27,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579207220] [2025-02-08 13:53:27,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:53:27,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 13:53:27,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:27,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 13:53:27,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2025-02-08 13:53:27,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-08 13:53:27,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 1090 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) [2025-02-08 13:53:27,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:27,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-08 13:53:27,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:34,875 INFO L124 PetriNetUnfolderBase]: 30701/59524 cut-off events. [2025-02-08 13:53:34,875 INFO L125 PetriNetUnfolderBase]: For 1105722/1105722 co-relation queries the response was YES. [2025-02-08 13:53:35,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244799 conditions, 59524 events. 30701/59524 cut-off events. For 1105722/1105722 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 589926 event pairs, 1517 based on Foata normal form. 3652/62915 useless extension candidates. Maximal degree in co-relation 244738. Up to 8063 conditions per place. [2025-02-08 13:53:35,712 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 555 selfloop transitions, 118 changer transitions 0/688 dead transitions. [2025-02-08 13:53:35,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 688 transitions, 6001 flow [2025-02-08 13:53:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 13:53:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-08 13:53:35,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1156 transitions. [2025-02-08 13:53:35,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7100737100737101 [2025-02-08 13:53:35,715 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 1090 flow. Second operand 37 states and 1156 transitions. [2025-02-08 13:53:35,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 688 transitions, 6001 flow [2025-02-08 13:53:37,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 688 transitions, 5859 flow, removed 50 selfloop flow, removed 13 redundant places. [2025-02-08 13:53:37,643 INFO L231 Difference]: Finished difference. Result has 170 places, 174 transitions, 2089 flow [2025-02-08 13:53:37,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2089, PETRI_PLACES=170, PETRI_TRANSITIONS=174} [2025-02-08 13:53:37,644 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2025-02-08 13:53:37,644 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 174 transitions, 2089 flow [2025-02-08 13:53:37,644 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) [2025-02-08 13:53:37,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:37,644 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:37,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 13:53:37,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:37,845 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-08 13:53:37,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1922250941, now seen corresponding path program 2 times [2025-02-08 13:53:37,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483333978] [2025-02-08 13:53:37,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 13:53:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:37,852 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 13:53:37,859 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 13:53:37,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 13:53:37,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:38,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:38,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483333978] [2025-02-08 13:53:38,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483333978] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:38,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240034890] [2025-02-08 13:53:38,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 13:53:38,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:38,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:38,022 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 13:53:38,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 13:53:38,066 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 13:53:38,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 13:53:38,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 13:53:38,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:38,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 13:53:38,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:38,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:53:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:38,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240034890] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:53:38,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:53:38,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2025-02-08 13:53:38,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772031210] [2025-02-08 13:53:38,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:53:38,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 13:53:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:38,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 13:53:38,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2025-02-08 13:53:38,440 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-08 13:53:38,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 174 transitions, 2089 flow. Second operand has 17 states, 17 states have (on average 19.88235294117647) internal successors, (338), 17 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:38,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:38,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-08 13:53:38,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand