./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.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/triangular-longest-1.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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 13:53:47,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 13:53:47,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 13:53:47,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 13:53:47,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 13:53:47,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 13:53:47,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 13:53:47,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 13:53:47,467 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 13:53:47,467 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 13:53:47,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 13:53:47,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 13:53:47,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 13:53:47,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 13:53:47,467 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 13:53:47,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 13:53:47,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 13:53:47,468 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 13:53:47,469 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 13:53:47,469 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 13:53:47,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 13:53:47,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 13:53:47,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 13:53:47,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:53:47,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 13:53:47,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 13:53:47,469 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 13:53:47,469 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 13:53:47,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 13:53:47,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 13:53:47,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 13:53:47,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 13:53:47,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 13:53:47,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 13:53:47,470 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 -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2025-02-08 13:53:47,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 13:53:47,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 13:53:47,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 13:53:47,702 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 13:53:47,702 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 13:53:47,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2025-02-08 13:53:48,804 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4de348f94/db7f09a563c74bb5aff06625d7f247a1/FLAGc7b0af03b [2025-02-08 13:53:49,145 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 13:53:49,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2025-02-08 13:53:49,159 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4de348f94/db7f09a563c74bb5aff06625d7f247a1/FLAGc7b0af03b [2025-02-08 13:53:49,401 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4de348f94/db7f09a563c74bb5aff06625d7f247a1 [2025-02-08 13:53:49,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 13:53:49,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 13:53:49,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 13:53:49,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 13:53:49,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 13:53:49,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462f5da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49, skipping insertion in model container [2025-02-08 13:53:49,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 13:53:49,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:53:49,712 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 13:53:49,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:53:49,782 INFO L204 MainTranslator]: Completed translation [2025-02-08 13:53:49,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49 WrapperNode [2025-02-08 13:53:49,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 13:53:49,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 13:53:49,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 13:53:49,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 13:53:49,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,811 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-02-08 13:53:49,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 13:53:49,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 13:53:49,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 13:53:49,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 13:53:49,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,820 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,833 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 13:53:49,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,838 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 13:53:49,846 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 13:53:49,846 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 13:53:49,846 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 13:53:49,847 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (1/1) ... [2025-02-08 13:53:49,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:53:49,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:49,876 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 13:53:49,882 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 13:53:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 13:53:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 13:53:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 13:53:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 13:53:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 13:53:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 13:53:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 13:53:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 13:53:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 13:53:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 13:53:49,902 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 13:53:49,988 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 13:53:49,989 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 13:53:50,102 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 13:53:50,102 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 13:53:50,166 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 13:53:50,167 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 13:53:50,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:53:50 BoogieIcfgContainer [2025-02-08 13:53:50,167 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 13:53:50,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 13:53:50,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 13:53:50,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 13:53:50,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:53:49" (1/3) ... [2025-02-08 13:53:50,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f90040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:53:50, skipping insertion in model container [2025-02-08 13:53:50,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:49" (2/3) ... [2025-02-08 13:53:50,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f90040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:53:50, skipping insertion in model container [2025-02-08 13:53:50,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:53:50" (3/3) ... [2025-02-08 13:53:50,174 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2025-02-08 13:53:50,183 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 13:53:50,185 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-1.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-08 13:53:50,185 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 13:53:50,215 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:53:50,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2025-02-08 13:53:50,271 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-02-08 13:53:50,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:53:50,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-02-08 13:53:50,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2025-02-08 13:53:50,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2025-02-08 13:53:50,288 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:53:50,299 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;@397e860c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:53:50,299 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-08 13:53:50,305 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:53:50,305 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 13:53:50,305 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:53:50,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:50,306 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 13:53:50,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:50,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:50,310 INFO L85 PathProgramCache]: Analyzing trace with hash 184371562, now seen corresponding path program 1 times [2025-02-08 13:53:50,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:50,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892606429] [2025-02-08 13:53:50,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:50,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:50,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 13:53:50,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 13:53:50,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:50,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:50,439 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 13:53:50,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:50,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892606429] [2025-02-08 13:53:50,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892606429] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:50,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:50,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:53:50,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654990481] [2025-02-08 13:53:50,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:50,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:53:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:50,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:53:50,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:53:50,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:50,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 13:53:50,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:50,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:50,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:50,712 INFO L124 PetriNetUnfolderBase]: 510/941 cut-off events. [2025-02-08 13:53:50,716 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 13:53:50,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 941 events. 510/941 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4953 event pairs, 208 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 1748. Up to 421 conditions per place. [2025-02-08 13:53:50,732 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 31 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2025-02-08 13:53:50,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 162 flow [2025-02-08 13:53:50,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:53:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:53:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-02-08 13:53:50,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2025-02-08 13:53:50,743 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 71 transitions. [2025-02-08 13:53:50,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 162 flow [2025-02-08 13:53:50,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:50,747 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2025-02-08 13:53:50,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2025-02-08 13:53:50,751 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2025-02-08 13:53:50,751 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2025-02-08 13:53:50,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 13:53:50,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:50,751 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 13:53:50,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 13:53:50,751 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:50,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash 184371563, now seen corresponding path program 1 times [2025-02-08 13:53:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:50,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980510188] [2025-02-08 13:53:50,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:50,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:50,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 13:53:50,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 13:53:50,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:50,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:50,788 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 13:53:50,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:50,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980510188] [2025-02-08 13:53:50,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980510188] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:50,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:50,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:53:50,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640563237] [2025-02-08 13:53:50,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:50,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:53:50,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:50,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:53:50,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:53:50,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:50,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 13:53:50,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:50,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:50,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:50,884 INFO L124 PetriNetUnfolderBase]: 499/971 cut-off events. [2025-02-08 13:53:50,884 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2025-02-08 13:53:50,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 971 events. 499/971 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5049 event pairs, 182 based on Foata normal form. 26/890 useless extension candidates. Maximal degree in co-relation 1943. Up to 466 conditions per place. [2025-02-08 13:53:50,889 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 31 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2025-02-08 13:53:50,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 186 flow [2025-02-08 13:53:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:53:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:53:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-02-08 13:53:50,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-02-08 13:53:50,891 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 70 transitions. [2025-02-08 13:53:50,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 186 flow [2025-02-08 13:53:50,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:50,892 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2025-02-08 13:53:50,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2025-02-08 13:53:50,893 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2025-02-08 13:53:50,893 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2025-02-08 13:53:50,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 13:53:50,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:50,893 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:50,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 13:53:50,893 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:50,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1087419662, now seen corresponding path program 1 times [2025-02-08 13:53:50,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:50,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693249663] [2025-02-08 13:53:50,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:50,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:50,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 13:53:50,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 13:53:50,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:50,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:50,945 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 13:53:50,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:50,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693249663] [2025-02-08 13:53:50,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693249663] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:50,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:50,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:50,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46436263] [2025-02-08 13:53:50,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:50,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:50,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:50,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:50,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:50,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 13:53:50,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 13:53:50,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:50,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 13:53:50,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:51,172 INFO L124 PetriNetUnfolderBase]: 1181/2230 cut-off events. [2025-02-08 13:53:51,172 INFO L125 PetriNetUnfolderBase]: For 710/710 co-relation queries the response was YES. [2025-02-08 13:53:51,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 2230 events. 1181/2230 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14007 event pairs, 558 based on Foata normal form. 104/2089 useless extension candidates. Maximal degree in co-relation 4638. Up to 1241 conditions per place. [2025-02-08 13:53:51,183 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 56 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2025-02-08 13:53:51,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 66 transitions, 322 flow [2025-02-08 13:53:51,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-02-08 13:53:51,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2025-02-08 13:53:51,184 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 91 transitions. [2025-02-08 13:53:51,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 66 transitions, 322 flow [2025-02-08 13:53:51,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 66 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:51,186 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2025-02-08 13:53:51,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2025-02-08 13:53:51,187 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2025-02-08 13:53:51,187 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2025-02-08 13:53:51,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 13:53:51,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:51,187 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:51,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 13:53:51,188 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:51,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1067763560, now seen corresponding path program 1 times [2025-02-08 13:53:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:51,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185878104] [2025-02-08 13:53:51,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:51,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:51,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 13:53:51,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 13:53:51,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:51,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:51,219 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 13:53:51,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185878104] [2025-02-08 13:53:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185878104] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:51,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:51,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:53:51,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581273407] [2025-02-08 13:53:51,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:51,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:53:51,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:51,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:53:51,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:53:51,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:51,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 13:53:51,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:51,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:51,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:51,352 INFO L124 PetriNetUnfolderBase]: 791/1734 cut-off events. [2025-02-08 13:53:51,353 INFO L125 PetriNetUnfolderBase]: For 752/768 co-relation queries the response was YES. [2025-02-08 13:53:51,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 1734 events. 791/1734 cut-off events. For 752/768 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11553 event pairs, 279 based on Foata normal form. 6/1619 useless extension candidates. Maximal degree in co-relation 3906. Up to 791 conditions per place. [2025-02-08 13:53:51,361 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 41 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2025-02-08 13:53:51,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 279 flow [2025-02-08 13:53:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:53:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:53:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-02-08 13:53:51,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2025-02-08 13:53:51,362 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 73 transitions. [2025-02-08 13:53:51,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 279 flow [2025-02-08 13:53:51,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:51,364 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2025-02-08 13:53:51,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2025-02-08 13:53:51,364 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2025-02-08 13:53:51,364 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2025-02-08 13:53:51,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 13:53:51,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:51,364 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:51,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 13:53:51,365 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:51,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1067763561, now seen corresponding path program 1 times [2025-02-08 13:53:51,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:51,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796304111] [2025-02-08 13:53:51,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:51,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 13:53:51,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 13:53:51,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:51,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:51,394 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 13:53:51,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:51,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796304111] [2025-02-08 13:53:51,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796304111] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:51,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:51,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:53:51,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468772031] [2025-02-08 13:53:51,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:51,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:53:51,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:51,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:53:51,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:53:51,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:51,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 13:53:51,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:51,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:51,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:51,543 INFO L124 PetriNetUnfolderBase]: 753/1716 cut-off events. [2025-02-08 13:53:51,544 INFO L125 PetriNetUnfolderBase]: For 1013/1029 co-relation queries the response was YES. [2025-02-08 13:53:51,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4132 conditions, 1716 events. 753/1716 cut-off events. For 1013/1029 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11602 event pairs, 217 based on Foata normal form. 42/1701 useless extension candidates. Maximal degree in co-relation 4114. Up to 835 conditions per place. [2025-02-08 13:53:51,553 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 41 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2025-02-08 13:53:51,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 302 flow [2025-02-08 13:53:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:53:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:53:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-02-08 13:53:51,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2025-02-08 13:53:51,555 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 72 transitions. [2025-02-08 13:53:51,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 302 flow [2025-02-08 13:53:51,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:51,558 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2025-02-08 13:53:51,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2025-02-08 13:53:51,559 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2025-02-08 13:53:51,559 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2025-02-08 13:53:51,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 13:53:51,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:51,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:51,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 13:53:51,559 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:51,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:51,560 INFO L85 PathProgramCache]: Analyzing trace with hash -376394516, now seen corresponding path program 1 times [2025-02-08 13:53:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460108273] [2025-02-08 13:53:51,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:51,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:51,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 13:53:51,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 13:53:51,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:51,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:51,605 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 13:53:51,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:51,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460108273] [2025-02-08 13:53:51,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460108273] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:51,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:51,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:51,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519552045] [2025-02-08 13:53:51,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:51,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:51,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:51,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:51,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:51,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 13:53:51,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 13:53:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 13:53:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:51,821 INFO L124 PetriNetUnfolderBase]: 1197/2294 cut-off events. [2025-02-08 13:53:51,821 INFO L125 PetriNetUnfolderBase]: For 1748/1947 co-relation queries the response was YES. [2025-02-08 13:53:51,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5719 conditions, 2294 events. 1197/2294 cut-off events. For 1748/1947 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14882 event pairs, 700 based on Foata normal form. 147/2346 useless extension candidates. Maximal degree in co-relation 5700. Up to 1481 conditions per place. [2025-02-08 13:53:51,834 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2025-02-08 13:53:51,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 396 flow [2025-02-08 13:53:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:51,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-02-08 13:53:51,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796875 [2025-02-08 13:53:51,835 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 87 transitions. [2025-02-08 13:53:51,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 396 flow [2025-02-08 13:53:51,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:51,838 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2025-02-08 13:53:51,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2025-02-08 13:53:51,839 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2025-02-08 13:53:51,839 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2025-02-08 13:53:51,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 13:53:51,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:51,839 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:51,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 13:53:51,839 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:51,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1986370296, now seen corresponding path program 1 times [2025-02-08 13:53:51,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:51,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139478136] [2025-02-08 13:53:51,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:51,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:51,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:53:51,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:53:51,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:51,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:51,883 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 13:53:51,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139478136] [2025-02-08 13:53:51,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139478136] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:51,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:51,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:53:51,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168753766] [2025-02-08 13:53:51,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:51,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:51,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:51,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:51,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:51,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:51,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:53:51,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:51,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:51,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:52,093 INFO L124 PetriNetUnfolderBase]: 1021/2270 cut-off events. [2025-02-08 13:53:52,093 INFO L125 PetriNetUnfolderBase]: For 1871/2056 co-relation queries the response was YES. [2025-02-08 13:53:52,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6024 conditions, 2270 events. 1021/2270 cut-off events. For 1871/2056 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16343 event pairs, 193 based on Foata normal form. 120/2344 useless extension candidates. Maximal degree in co-relation 6003. Up to 674 conditions per place. [2025-02-08 13:53:52,102 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 58 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2025-02-08 13:53:52,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 477 flow [2025-02-08 13:53:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:53:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:53:52,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-02-08 13:53:52,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.725 [2025-02-08 13:53:52,104 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 116 transitions. [2025-02-08 13:53:52,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 477 flow [2025-02-08 13:53:52,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:52,107 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 272 flow [2025-02-08 13:53:52,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-02-08 13:53:52,107 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2025-02-08 13:53:52,107 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 272 flow [2025-02-08 13:53:52,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:53:52,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:52,108 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:52,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 13:53:52,108 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:52,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:52,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1986370295, now seen corresponding path program 1 times [2025-02-08 13:53:52,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:52,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580943121] [2025-02-08 13:53:52,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:52,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:52,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:53:52,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:53:52,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:52,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:52,140 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 13:53:52,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:52,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580943121] [2025-02-08 13:53:52,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580943121] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:52,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:52,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:53:52,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642402276] [2025-02-08 13:53:52,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:52,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:52,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:52,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:52,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:52,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:52,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:53:52,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:52,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:52,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:52,331 INFO L124 PetriNetUnfolderBase]: 1098/2481 cut-off events. [2025-02-08 13:53:52,332 INFO L125 PetriNetUnfolderBase]: For 4261/4434 co-relation queries the response was YES. [2025-02-08 13:53:52,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 2481 events. 1098/2481 cut-off events. For 4261/4434 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17971 event pairs, 268 based on Foata normal form. 183/2571 useless extension candidates. Maximal degree in co-relation 6945. Up to 809 conditions per place. [2025-02-08 13:53:52,343 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 63 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2025-02-08 13:53:52,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 564 flow [2025-02-08 13:53:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:53:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:53:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-02-08 13:53:52,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.73125 [2025-02-08 13:53:52,344 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 272 flow. Second operand 5 states and 117 transitions. [2025-02-08 13:53:52,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 564 flow [2025-02-08 13:53:52,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 541 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:52,349 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 327 flow [2025-02-08 13:53:52,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2025-02-08 13:53:52,350 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2025-02-08 13:53:52,350 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 327 flow [2025-02-08 13:53:52,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:53:52,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:52,350 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:52,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 13:53:52,351 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:52,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:52,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1673537801, now seen corresponding path program 1 times [2025-02-08 13:53:52,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:52,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959306842] [2025-02-08 13:53:52,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:52,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:52,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:53:52,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:53:52,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:52,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:52,386 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 13:53:52,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:52,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959306842] [2025-02-08 13:53:52,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959306842] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:52,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:53:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113429303] [2025-02-08 13:53:52,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:52,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:52,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:52,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:52,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:52,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:52,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:53:52,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:52,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:52,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:52,517 INFO L124 PetriNetUnfolderBase]: 903/1917 cut-off events. [2025-02-08 13:53:52,517 INFO L125 PetriNetUnfolderBase]: For 3740/3971 co-relation queries the response was YES. [2025-02-08 13:53:52,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 1917 events. 903/1917 cut-off events. For 3740/3971 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12677 event pairs, 696 based on Foata normal form. 161/1993 useless extension candidates. Maximal degree in co-relation 5545. Up to 1466 conditions per place. [2025-02-08 13:53:52,524 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 32 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2025-02-08 13:53:52,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 330 flow [2025-02-08 13:53:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:53:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:53:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-02-08 13:53:52,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-08 13:53:52,526 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 327 flow. Second operand 3 states and 56 transitions. [2025-02-08 13:53:52,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 330 flow [2025-02-08 13:53:52,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 314 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:52,530 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 250 flow [2025-02-08 13:53:52,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2025-02-08 13:53:52,531 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2025-02-08 13:53:52,531 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 250 flow [2025-02-08 13:53:52,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:53:52,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:52,531 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:52,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 13:53:52,532 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:52,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1673537800, now seen corresponding path program 1 times [2025-02-08 13:53:52,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296097490] [2025-02-08 13:53:52,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:52,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:53:52,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:53:52,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:52,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:52,560 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 13:53:52,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:52,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296097490] [2025-02-08 13:53:52,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296097490] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:52,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:52,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:53:52,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497954027] [2025-02-08 13:53:52,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:52,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:52,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:52,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:52,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:52,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:52,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:53:52,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:52,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:52,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:52,719 INFO L124 PetriNetUnfolderBase]: 1002/2330 cut-off events. [2025-02-08 13:53:52,719 INFO L125 PetriNetUnfolderBase]: For 2596/2781 co-relation queries the response was YES. [2025-02-08 13:53:52,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 2330 events. 1002/2330 cut-off events. For 2596/2781 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16530 event pairs, 199 based on Foata normal form. 110/2367 useless extension candidates. Maximal degree in co-relation 6199. Up to 1168 conditions per place. [2025-02-08 13:53:52,728 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 58 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2025-02-08 13:53:52,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 480 flow [2025-02-08 13:53:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:53:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:53:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2025-02-08 13:53:52,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68125 [2025-02-08 13:53:52,729 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 250 flow. Second operand 5 states and 109 transitions. [2025-02-08 13:53:52,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 480 flow [2025-02-08 13:53:52,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:52,733 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 271 flow [2025-02-08 13:53:52,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2025-02-08 13:53:52,734 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-02-08 13:53:52,734 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 271 flow [2025-02-08 13:53:52,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:53:52,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:52,734 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:52,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 13:53:52,734 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:52,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1089920270, now seen corresponding path program 1 times [2025-02-08 13:53:52,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:52,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134774904] [2025-02-08 13:53:52,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:52,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:52,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:53:52,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:53:52,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:52,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:52,777 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 13:53:52,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:52,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134774904] [2025-02-08 13:53:52,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134774904] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:52,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002445061] [2025-02-08 13:53:52,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:52,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:52,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:52,781 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 13:53:52,785 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 13:53:52,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:53:52,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:53:52,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:52,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:52,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 13:53:52,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:52,879 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 13:53:52,879 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 13:53:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002445061] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:52,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 13:53:52,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-08 13:53:52,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976135781] [2025-02-08 13:53:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:52,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:53:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:52,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:53:52,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-08 13:53:52,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 13:53:52,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 13:53:52,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:52,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 13:53:52,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:53,139 INFO L124 PetriNetUnfolderBase]: 1858/3390 cut-off events. [2025-02-08 13:53:53,139 INFO L125 PetriNetUnfolderBase]: For 4438/4674 co-relation queries the response was YES. [2025-02-08 13:53:53,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 3390 events. 1858/3390 cut-off events. For 4438/4674 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21685 event pairs, 259 based on Foata normal form. 202/3404 useless extension candidates. Maximal degree in co-relation 9769. Up to 1361 conditions per place. [2025-02-08 13:53:53,155 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2025-02-08 13:53:53,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 566 flow [2025-02-08 13:53:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-08 13:53:53,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-08 13:53:53,156 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 271 flow. Second operand 4 states and 76 transitions. [2025-02-08 13:53:53,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 566 flow [2025-02-08 13:53:53,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 552 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:53,164 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 271 flow [2025-02-08 13:53:53,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2025-02-08 13:53:53,166 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-02-08 13:53:53,166 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 271 flow [2025-02-08 13:53:53,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 13:53:53,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:53,166 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 13:53:53,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 13:53:53,367 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 13:53:53,367 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:53,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash 572210151, now seen corresponding path program 1 times [2025-02-08 13:53:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:53,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566750586] [2025-02-08 13:53:53,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:53,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 13:53:53,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 13:53:53,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:53,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:53,438 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 13:53:53,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:53,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566750586] [2025-02-08 13:53:53,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566750586] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:53,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:53,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:53,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186468706] [2025-02-08 13:53:53,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:53,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:53,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:53,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:53,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:53,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 13:53:53,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 13:53:53,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:53,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 13:53:53,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:53,693 INFO L124 PetriNetUnfolderBase]: 1583/3216 cut-off events. [2025-02-08 13:53:53,693 INFO L125 PetriNetUnfolderBase]: For 4752/4869 co-relation queries the response was YES. [2025-02-08 13:53:53,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9374 conditions, 3216 events. 1583/3216 cut-off events. For 4752/4869 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21736 event pairs, 358 based on Foata normal form. 178/3347 useless extension candidates. Maximal degree in co-relation 9348. Up to 1262 conditions per place. [2025-02-08 13:53:53,712 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2025-02-08 13:53:53,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 562 flow [2025-02-08 13:53:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-08 13:53:53,714 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-08 13:53:53,714 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 271 flow. Second operand 4 states and 76 transitions. [2025-02-08 13:53:53,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 562 flow [2025-02-08 13:53:53,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:53,727 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 275 flow [2025-02-08 13:53:53,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2025-02-08 13:53:53,728 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-02-08 13:53:53,728 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 275 flow [2025-02-08 13:53:53,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 13:53:53,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:53,728 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:53,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 13:53:53,728 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:53,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:53,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1373662433, now seen corresponding path program 1 times [2025-02-08 13:53:53,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:53,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420642989] [2025-02-08 13:53:53,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:53,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:53,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 13:53:53,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 13:53:53,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:53,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:53,779 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 13:53:53,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:53,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420642989] [2025-02-08 13:53:53,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420642989] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:53,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497992237] [2025-02-08 13:53:53,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:53,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:53,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:53,784 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 13:53:53,788 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 13:53:53,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 13:53:53,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 13:53:53,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:53,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:53,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 13:53:53,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:53,872 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 13:53:53,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 13:53:53,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497992237] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:53,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 13:53:53,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 13:53:53,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41155606] [2025-02-08 13:53:53,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:53,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:53:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:53,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:53:53,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 13:53:53,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 13:53:53,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 13:53:53,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:53,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 13:53:53,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:54,187 INFO L124 PetriNetUnfolderBase]: 1521/2931 cut-off events. [2025-02-08 13:53:54,188 INFO L125 PetriNetUnfolderBase]: For 5613/5705 co-relation queries the response was YES. [2025-02-08 13:53:54,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8772 conditions, 2931 events. 1521/2931 cut-off events. For 5613/5705 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19053 event pairs, 142 based on Foata normal form. 207/3017 useless extension candidates. Maximal degree in co-relation 8746. Up to 984 conditions per place. [2025-02-08 13:53:54,201 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 81 selfloop transitions, 6 changer transitions 1/95 dead transitions. [2025-02-08 13:53:54,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 726 flow [2025-02-08 13:53:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-02-08 13:53:54,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-08 13:53:54,202 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 275 flow. Second operand 6 states and 114 transitions. [2025-02-08 13:53:54,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 726 flow [2025-02-08 13:53:54,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:54,209 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 275 flow [2025-02-08 13:53:54,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2025-02-08 13:53:54,210 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2025-02-08 13:53:54,210 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 275 flow [2025-02-08 13:53:54,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 13:53:54,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:54,210 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:54,220 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 13:53:54,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:54,410 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:54,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1136242402, now seen corresponding path program 1 times [2025-02-08 13:53:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:54,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154140941] [2025-02-08 13:53:54,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:54,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 13:53:54,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 13:53:54,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:54,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:54,459 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 13:53:54,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:54,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154140941] [2025-02-08 13:53:54,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154140941] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:54,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238978699] [2025-02-08 13:53:54,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:54,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:54,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:54,463 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 13:53:54,466 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 13:53:54,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 13:53:54,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 13:53:54,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:54,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:54,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 13:53:54,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:54,540 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 13:53:54,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:53:54,568 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 13:53:54,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238978699] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:53:54,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:53:54,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-08 13:53:54,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188795541] [2025-02-08 13:53:54,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:53:54,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 13:53:54,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:54,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 13:53:54,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-08 13:53:54,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:54,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 275 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 13:53:54,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:54,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:54,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:54,827 INFO L124 PetriNetUnfolderBase]: 1339/2904 cut-off events. [2025-02-08 13:53:54,828 INFO L125 PetriNetUnfolderBase]: For 6270/6352 co-relation queries the response was YES. [2025-02-08 13:53:54,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8846 conditions, 2904 events. 1339/2904 cut-off events. For 6270/6352 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18824 event pairs, 119 based on Foata normal form. 227/3108 useless extension candidates. Maximal degree in co-relation 8819. Up to 507 conditions per place. [2025-02-08 13:53:54,841 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 73 selfloop transitions, 12 changer transitions 4/99 dead transitions. [2025-02-08 13:53:54,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 703 flow [2025-02-08 13:53:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 13:53:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 13:53:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2025-02-08 13:53:54,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2025-02-08 13:53:54,843 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 275 flow. Second operand 7 states and 158 transitions. [2025-02-08 13:53:54,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 703 flow [2025-02-08 13:53:54,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 676 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-02-08 13:53:54,850 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 379 flow [2025-02-08 13:53:54,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2025-02-08 13:53:54,851 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2025-02-08 13:53:54,851 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 379 flow [2025-02-08 13:53:54,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 13:53:54,851 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:54,851 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:54,859 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 13:53:55,051 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 13:53:55,051 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:55,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash 366137701, now seen corresponding path program 1 times [2025-02-08 13:53:55,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:55,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733892525] [2025-02-08 13:53:55,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:55,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:55,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 13:53:55,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 13:53:55,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:55,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:55,081 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 13:53:55,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:55,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733892525] [2025-02-08 13:53:55,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733892525] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:55,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:55,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:55,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105195459] [2025-02-08 13:53:55,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:55,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:55,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:55,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:55,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:55,086 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 13:53:55,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 13:53:55,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:55,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 13:53:55,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:55,312 INFO L124 PetriNetUnfolderBase]: 2138/3893 cut-off events. [2025-02-08 13:53:55,312 INFO L125 PetriNetUnfolderBase]: For 10005/10082 co-relation queries the response was YES. [2025-02-08 13:53:55,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12733 conditions, 3893 events. 2138/3893 cut-off events. For 10005/10082 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 22890 event pairs, 503 based on Foata normal form. 257/4109 useless extension candidates. Maximal degree in co-relation 12701. Up to 1567 conditions per place. [2025-02-08 13:53:55,334 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 69 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2025-02-08 13:53:55,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 764 flow [2025-02-08 13:53:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-02-08 13:53:55,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-08 13:53:55,335 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 379 flow. Second operand 4 states and 72 transitions. [2025-02-08 13:53:55,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 764 flow [2025-02-08 13:53:55,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 729 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:55,348 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 372 flow [2025-02-08 13:53:55,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2025-02-08 13:53:55,350 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2025-02-08 13:53:55,350 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 372 flow [2025-02-08 13:53:55,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 13:53:55,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:55,350 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:55,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 13:53:55,350 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:55,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1824892076, now seen corresponding path program 1 times [2025-02-08 13:53:55,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:55,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321597547] [2025-02-08 13:53:55,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:55,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:55,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 13:53:55,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 13:53:55,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:55,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:55,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:55,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321597547] [2025-02-08 13:53:55,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321597547] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:55,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857440766] [2025-02-08 13:53:55,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:55,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:55,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:55,438 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 13:53:55,439 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 13:53:55,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 13:53:55,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 13:53:55,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:55,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:55,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 13:53:55,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:55,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:53:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:55,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857440766] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:53:55,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:53:55,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-08 13:53:55,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293390071] [2025-02-08 13:53:55,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:53:55,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 13:53:55,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:55,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 13:53:55,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-02-08 13:53:55,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:55,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 372 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 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 13:53:55,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:55,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:55,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:55,939 INFO L124 PetriNetUnfolderBase]: 1744/3743 cut-off events. [2025-02-08 13:53:55,939 INFO L125 PetriNetUnfolderBase]: For 12928/12958 co-relation queries the response was YES. [2025-02-08 13:53:55,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11877 conditions, 3743 events. 1744/3743 cut-off events. For 12928/12958 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 23155 event pairs, 59 based on Foata normal form. 200/3940 useless extension candidates. Maximal degree in co-relation 11846. Up to 457 conditions per place. [2025-02-08 13:53:55,956 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 100 selfloop transitions, 17 changer transitions 17/144 dead transitions. [2025-02-08 13:53:55,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 144 transitions, 1032 flow [2025-02-08 13:53:55,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 13:53:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 13:53:55,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 268 transitions. [2025-02-08 13:53:55,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2025-02-08 13:53:55,961 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 372 flow. Second operand 12 states and 268 transitions. [2025-02-08 13:53:55,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 144 transitions, 1032 flow [2025-02-08 13:53:55,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 144 transitions, 995 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-08 13:53:55,971 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 429 flow [2025-02-08 13:53:55,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2025-02-08 13:53:55,971 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2025-02-08 13:53:55,971 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 429 flow [2025-02-08 13:53:55,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 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 13:53:55,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:55,972 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:55,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 13:53:56,172 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,SelfDestructingSolverStorable15 [2025-02-08 13:53:56,172 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:56,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash -266816716, now seen corresponding path program 1 times [2025-02-08 13:53:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:56,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599982496] [2025-02-08 13:53:56,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:56,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:56,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 13:53:56,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 13:53:56,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:56,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:56,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:56,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599982496] [2025-02-08 13:53:56,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599982496] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:56,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332319364] [2025-02-08 13:53:56,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:56,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:56,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:56,324 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 13:53:56,326 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 13:53:56,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 13:53:56,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 13:53:56,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:56,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:56,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 13:53:56,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:56,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:53:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:56,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332319364] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:53:56,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:53:56,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-02-08 13:53:56,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746577894] [2025-02-08 13:53:56,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:53:56,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 13:53:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:56,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 13:53:56,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-02-08 13:53:56,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:56,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 429 flow. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 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 13:53:56,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:56,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:56,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:57,107 INFO L124 PetriNetUnfolderBase]: 2554/5409 cut-off events. [2025-02-08 13:53:57,107 INFO L125 PetriNetUnfolderBase]: For 19397/19439 co-relation queries the response was YES. [2025-02-08 13:53:57,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17144 conditions, 5409 events. 2554/5409 cut-off events. For 19397/19439 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 33758 event pairs, 119 based on Foata normal form. 192/5588 useless extension candidates. Maximal degree in co-relation 17105. Up to 647 conditions per place. [2025-02-08 13:53:57,129 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 120 selfloop transitions, 24 changer transitions 25/179 dead transitions. [2025-02-08 13:53:57,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 179 transitions, 1332 flow [2025-02-08 13:53:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 13:53:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 13:53:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 334 transitions. [2025-02-08 13:53:57,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2025-02-08 13:53:57,132 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 429 flow. Second operand 15 states and 334 transitions. [2025-02-08 13:53:57,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 179 transitions, 1332 flow [2025-02-08 13:53:57,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1319 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:57,149 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 580 flow [2025-02-08 13:53:57,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=580, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2025-02-08 13:53:57,150 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2025-02-08 13:53:57,150 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 580 flow [2025-02-08 13:53:57,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 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 13:53:57,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:57,150 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:57,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 13:53:57,350 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,SelfDestructingSolverStorable16 [2025-02-08 13:53:57,351 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:53:57,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:57,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1867265772, now seen corresponding path program 2 times [2025-02-08 13:53:57,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:57,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811736682] [2025-02-08 13:53:57,353 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 13:53:57,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:57,360 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-02-08 13:53:57,369 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 13:53:57,369 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 13:53:57,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:57,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:57,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811736682] [2025-02-08 13:53:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811736682] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:53:57,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928239379] [2025-02-08 13:53:57,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 13:53:57,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:53:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:57,788 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 13:53:57,790 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 13:53:57,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-02-08 13:53:57,859 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 13:53:57,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 13:53:57,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:57,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 13:53:57,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:53:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:58,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:53:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:58,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928239379] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:53:58,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:53:58,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2025-02-08 13:53:58,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547762082] [2025-02-08 13:53:58,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:53:58,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-08 13:53:58,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:58,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-08 13:53:58,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2025-02-08 13:53:58,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:53:58,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 580 flow. Second operand has 28 states, 28 states have (on average 14.142857142857142) internal successors, (396), 28 states have internal predecessors, (396), 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 13:53:58,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:58,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:53:58,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:59,733 INFO L124 PetriNetUnfolderBase]: 4336/9215 cut-off events. [2025-02-08 13:53:59,734 INFO L125 PetriNetUnfolderBase]: For 48451/48481 co-relation queries the response was YES. [2025-02-08 13:53:59,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29574 conditions, 9215 events. 4336/9215 cut-off events. For 48451/48481 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 57326 event pairs, 59 based on Foata normal form. 360/9572 useless extension candidates. Maximal degree in co-relation 29527. Up to 1177 conditions per place. [2025-02-08 13:53:59,783 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 212 selfloop transitions, 41 changer transitions 49/312 dead transitions. [2025-02-08 13:53:59,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 312 transitions, 2331 flow [2025-02-08 13:53:59,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-08 13:53:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-02-08 13:53:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 625 transitions. [2025-02-08 13:53:59,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6975446428571429 [2025-02-08 13:53:59,786 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 580 flow. Second operand 28 states and 625 transitions. [2025-02-08 13:53:59,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 312 transitions, 2331 flow [2025-02-08 13:53:59,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 312 transitions, 2251 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 13:53:59,828 INFO L231 Difference]: Finished difference. Result has 139 places, 76 transitions, 842 flow [2025-02-08 13:53:59,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=842, PETRI_PLACES=139, PETRI_TRANSITIONS=76} [2025-02-08 13:53:59,829 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2025-02-08 13:53:59,829 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 76 transitions, 842 flow [2025-02-08 13:53:59,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.142857142857142) internal successors, (396), 28 states have internal predecessors, (396), 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 13:53:59,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:59,829 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:59,836 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 13:54:00,034 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,SelfDestructingSolverStorable17 [2025-02-08 13:54:00,034 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:54:00,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2134063340, now seen corresponding path program 2 times [2025-02-08 13:54:00,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:00,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987997984] [2025-02-08 13:54:00,035 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 13:54:00,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:00,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 115 statements into 2 equivalence classes. [2025-02-08 13:54:00,093 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-02-08 13:54:00,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 13:54:00,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:00,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:00,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987997984] [2025-02-08 13:54:00,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987997984] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:54:00,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123873814] [2025-02-08 13:54:00,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 13:54:00,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:54:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:54:00,496 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 13:54:00,496 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 13:54:00,530 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 115 statements into 2 equivalence classes. [2025-02-08 13:54:00,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-02-08 13:54:00,555 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 13:54:00,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:00,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 13:54:00,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:54:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:00,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 13:54:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:01,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123873814] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 13:54:01,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 13:54:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2025-02-08 13:54:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091415220] [2025-02-08 13:54:01,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 13:54:01,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-08 13:54:01,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:01,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-08 13:54:01,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2025-02-08 13:54:01,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-02-08 13:54:01,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 76 transitions, 842 flow. Second operand has 48 states, 48 states have (on average 14.083333333333334) internal successors, (676), 48 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:01,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:01,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-02-08 13:54:01,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:04,519 INFO L124 PetriNetUnfolderBase]: 7738/16353 cut-off events. [2025-02-08 13:54:04,520 INFO L125 PetriNetUnfolderBase]: For 137587/137629 co-relation queries the response was YES. [2025-02-08 13:54:04,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52495 conditions, 16353 events. 7738/16353 cut-off events. For 137587/137629 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 101935 event pairs, 119 based on Foata normal form. 672/17012 useless extension candidates. Maximal degree in co-relation 52435. Up to 2087 conditions per place. [2025-02-08 13:54:04,603 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 344 selfloop transitions, 72 changer transitions 89/515 dead transitions. [2025-02-08 13:54:04,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 515 transitions, 3897 flow [2025-02-08 13:54:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-08 13:54:04,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2025-02-08 13:54:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1054 transitions. [2025-02-08 13:54:04,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7007978723404256 [2025-02-08 13:54:04,606 INFO L175 Difference]: Start difference. First operand has 139 places, 76 transitions, 842 flow. Second operand 47 states and 1054 transitions. [2025-02-08 13:54:04,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 515 transitions, 3897 flow [2025-02-08 13:54:04,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 515 transitions, 3751 flow, removed 0 selfloop flow, removed 11 redundant places. [2025-02-08 13:54:04,683 INFO L231 Difference]: Finished difference. Result has 197 places, 108 transitions, 1348 flow [2025-02-08 13:54:04,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1348, PETRI_PLACES=197, PETRI_TRANSITIONS=108} [2025-02-08 13:54:04,683 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 162 predicate places. [2025-02-08 13:54:04,683 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 108 transitions, 1348 flow [2025-02-08 13:54:04,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 14.083333333333334) internal successors, (676), 48 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:04,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:04,684 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:04,690 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 13:54:04,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:54:04,888 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-08 13:54:04,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:04,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1412692624, now seen corresponding path program 3 times [2025-02-08 13:54:04,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:04,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134464516] [2025-02-08 13:54:04,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 13:54:04,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:04,897 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 225 statements into 17 equivalence classes. [2025-02-08 13:54:05,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 220 of 225 statements. [2025-02-08 13:54:05,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-02-08 13:54:05,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 1581 proven. 111 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-08 13:54:06,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:06,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134464516] [2025-02-08 13:54:06,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134464516] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 13:54:06,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364194111] [2025-02-08 13:54:06,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 13:54:06,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:54:06,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:54:06,563 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 13:54:06,564 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 13:54:06,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 225 statements into 17 equivalence classes. [2025-02-08 13:54:06,667 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 220 of 225 statements. [2025-02-08 13:54:06,667 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-02-08 13:54:06,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:06,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-08 13:54:06,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 13:54:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 1691 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 13:54:06,908 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 13:54:06,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364194111] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:06,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 13:54:06,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [45] total 47 [2025-02-08 13:54:06,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564489340] [2025-02-08 13:54:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:06,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-08 13:54:06,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:06,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-08 13:54:06,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=1628, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 13:54:06,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-02-08 13:54:06,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 108 transitions, 1348 flow. Second operand has 43 states, 43 states have (on average 11.162790697674419) internal successors, (480), 43 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:06,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:06,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-02-08 13:54:06,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:33,835 INFO L124 PetriNetUnfolderBase]: 102864/174495 cut-off events. [2025-02-08 13:54:33,836 INFO L125 PetriNetUnfolderBase]: For 438732/438752 co-relation queries the response was YES. [2025-02-08 13:54:36,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569618 conditions, 174495 events. 102864/174495 cut-off events. For 438732/438752 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 1431682 event pairs, 1025 based on Foata normal form. 1217/175695 useless extension candidates. Maximal degree in co-relation 569545. Up to 25671 conditions per place. [2025-02-08 13:54:36,467 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 1776/1776 dead transitions. [2025-02-08 13:54:36,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1776 transitions, 22052 flow [2025-02-08 13:54:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-08 13:54:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-02-08 13:54:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 868 transitions. [2025-02-08 13:54:36,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6308139534883721 [2025-02-08 13:54:36,474 INFO L175 Difference]: Start difference. First operand has 197 places, 108 transitions, 1348 flow. Second operand 43 states and 868 transitions. [2025-02-08 13:54:36,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1776 transitions, 22052 flow [2025-02-08 13:54:39,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1776 transitions, 15542 flow, removed 42 selfloop flow, removed 73 redundant places. [2025-02-08 13:54:39,558 INFO L231 Difference]: Finished difference. Result has 160 places, 0 transitions, 0 flow [2025-02-08 13:54:39,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=0, PETRI_PLACES=160, PETRI_TRANSITIONS=0} [2025-02-08 13:54:39,559 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 125 predicate places. [2025-02-08 13:54:39,559 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 0 transitions, 0 flow [2025-02-08 13:54:39,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.162790697674419) internal successors, (480), 43 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-02-08 13:54:39,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-02-08 13:54:39,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-02-08 13:54:39,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-02-08 13:54:39,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-02-08 13:54:39,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-02-08 13:54:39,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-02-08 13:54:39,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-02-08 13:54:39,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-02-08 13:54:39,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-02-08 13:54:39,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 13:54:39,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 13:54:39,768 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:39,775 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 13:54:39,776 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 13:54:39,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:54:39 BasicIcfg [2025-02-08 13:54:39,779 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 13:54:39,780 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 13:54:39,780 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 13:54:39,780 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 13:54:39,781 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:53:50" (3/4) ... [2025-02-08 13:54:39,785 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 13:54:39,787 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-02-08 13:54:39,787 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-02-08 13:54:39,789 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2025-02-08 13:54:39,790 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-08 13:54:39,790 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-08 13:54:39,790 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-08 13:54:39,790 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 13:54:39,859 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 13:54:39,859 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 13:54:39,859 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 13:54:39,860 INFO L158 Benchmark]: Toolchain (without parser) took 50455.50ms. Allocated memory was 142.6MB in the beginning and 12.0GB in the end (delta: 11.9GB). Free memory was 113.5MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2025-02-08 13:54:39,860 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory was 125.4MB in the beginning and 125.1MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 13:54:39,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.60ms. Allocated memory is still 142.6MB. Free memory was 113.5MB in the beginning and 94.2MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 13:54:39,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.37ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 92.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 13:54:39,863 INFO L158 Benchmark]: Boogie Preprocessor took 28.60ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 91.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 13:54:39,863 INFO L158 Benchmark]: IcfgBuilder took 321.77ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 70.1MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 13:54:39,863 INFO L158 Benchmark]: TraceAbstraction took 49610.54ms. Allocated memory was 142.6MB in the beginning and 12.0GB in the end (delta: 11.9GB). Free memory was 70.1MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2025-02-08 13:54:39,863 INFO L158 Benchmark]: Witness Printer took 79.69ms. Allocated memory is still 12.0GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 13:54:39,864 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory was 125.4MB in the beginning and 125.1MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.60ms. Allocated memory is still 142.6MB. Free memory was 113.5MB in the beginning and 94.2MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.37ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 92.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.60ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 91.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 321.77ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 70.1MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 49610.54ms. Allocated memory was 142.6MB in the beginning and 12.0GB in the end (delta: 11.9GB). Free memory was 70.1MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. * Witness Printer took 79.69ms. Allocated memory is still 12.0GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 49.5s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 42.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4312 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4284 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5937 IncrementalHoareTripleChecker+Invalid, 6005 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 16 mSDtfsCounter, 5937 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1026 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1348occurred in iteration=19, InterpolantAutomatonStates: 208, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1120 NumberOfCodeBlocks, 1110 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 1342 ConstructedInterpolants, 0 QuantifiedInterpolants, 3914 SizeOfPredicates, 69 NumberOfNonLiveVariables, 1539 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 33 InterpolantComputations, 15 PerfectInterpolantSequences, 3331/5028 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 13:54:39,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE