./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/fib_unsafe-6.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:03:12,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:03:12,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:03:12,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:03:12,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:03:12,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:03:12,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:03:12,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:03:12,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:03:12,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:03:12,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:03:12,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:03:12,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:03:12,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:03:12,928 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:03:12,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:03:12,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:03:12,929 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:03:12,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:03:12,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:03:12,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:03:12,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:03:12,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:03:12,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:03:12,934 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:03:12,934 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:03:12,934 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:03:12,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:03:12,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:03:12,935 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:03:12,935 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:03:12,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:03:12,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:03:12,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:03:12,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:03:12,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:03:12,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:03:12,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:03:12,937 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:03:12,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:03:12,938 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:03:12,938 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:03:12,938 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:03:12,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:03:12,938 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b [2024-11-10 22:03:13,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:03:13,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:03:13,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:03:13,178 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:03:13,178 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:03:13,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-6.i [2024-11-10 22:03:14,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:03:14,655 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:03:14,656 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-6.i [2024-11-10 22:03:14,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67fed4c76/1873b95942f148eb931b1b58a99a41f0/FLAGdc3f31448 [2024-11-10 22:03:15,030 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67fed4c76/1873b95942f148eb931b1b58a99a41f0 [2024-11-10 22:03:15,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:03:15,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:03:15,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:03:15,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:03:15,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:03:15,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee8f285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15, skipping insertion in model container [2024-11-10 22:03:15,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:03:15,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:03:15,403 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:03:15,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:03:15,486 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:03:15,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15 WrapperNode [2024-11-10 22:03:15,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:03:15,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:03:15,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:03:15,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:03:15,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,540 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-10 22:03:15,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:03:15,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:03:15,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:03:15,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:03:15,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,573 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]. [2024-11-10 22:03:15,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,578 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:03:15,590 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:03:15,590 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:03:15,590 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:03:15,590 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (1/1) ... [2024-11-10 22:03:15,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:03:15,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:15,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:03:15,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:03:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 22:03:15,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 22:03:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 22:03:15,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 22:03:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:03:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:03:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:03:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:03:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:03:15,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:03:15,690 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:03:15,790 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:03:15,794 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:03:15,935 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:03:15,936 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:03:16,013 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:03:16,013 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:03:16,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:03:16 BoogieIcfgContainer [2024-11-10 22:03:16,014 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:03:16,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:03:16,015 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:03:16,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:03:16,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:03:15" (1/3) ... [2024-11-10 22:03:16,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c54e4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:03:16, skipping insertion in model container [2024-11-10 22:03:16,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:15" (2/3) ... [2024-11-10 22:03:16,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c54e4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:03:16, skipping insertion in model container [2024-11-10 22:03:16,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:03:16" (3/3) ... [2024-11-10 22:03:16,025 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-6.i [2024-11-10 22:03:16,039 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:03:16,040 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-10 22:03:16,040 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:03:16,093 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:03:16,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 114 flow [2024-11-10 22:03:16,146 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-11-10 22:03:16,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:03:16,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 6/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-10 22:03:16,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 114 flow [2024-11-10 22:03:16,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 108 flow [2024-11-10 22:03:16,161 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:03:16,166 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;@4a3bd4dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:03:16,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-10 22:03:16,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:03:16,176 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-10 22:03:16,177 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:03:16,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:16,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:16,178 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:16,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:16,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1890733871, now seen corresponding path program 1 times [2024-11-10 22:03:16,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:16,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381005784] [2024-11-10 22:03:16,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:16,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:16,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381005784] [2024-11-10 22:03:16,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381005784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:16,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:16,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513911213] [2024-11-10 22:03:16,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:16,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:16,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:16,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:16,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 22:03:16,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:16,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:16,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:16,811 INFO L124 PetriNetUnfolderBase]: 785/1644 cut-off events. [2024-11-10 22:03:16,812 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 22:03:16,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 1644 events. 785/1644 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11249 event pairs, 188 based on Foata normal form. 230/1468 useless extension candidates. Maximal degree in co-relation 2839. Up to 612 conditions per place. [2024-11-10 22:03:16,829 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 49 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-10 22:03:16,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 271 flow [2024-11-10 22:03:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-10 22:03:16,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7877358490566038 [2024-11-10 22:03:16,860 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 108 flow. Second operand 4 states and 167 transitions. [2024-11-10 22:03:16,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 271 flow [2024-11-10 22:03:16,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:16,867 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 131 flow [2024-11-10 22:03:16,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-10 22:03:16,872 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-10 22:03:16,872 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 131 flow [2024-11-10 22:03:16,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 22:03:16,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:16,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:16,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:03:16,873 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:16,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1287009838, now seen corresponding path program 1 times [2024-11-10 22:03:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:16,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894223259] [2024-11-10 22:03:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:16,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:16,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894223259] [2024-11-10 22:03:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894223259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:16,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:16,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:03:16,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935411532] [2024-11-10 22:03:16,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:16,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:03:16,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:03:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:03:16,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-10 22:03:16,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:16,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:16,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-10 22:03:16,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:17,308 INFO L124 PetriNetUnfolderBase]: 1553/3036 cut-off events. [2024-11-10 22:03:17,308 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-10 22:03:17,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 3036 events. 1553/3036 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 23089 event pairs, 486 based on Foata normal form. 56/2383 useless extension candidates. Maximal degree in co-relation 6293. Up to 1409 conditions per place. [2024-11-10 22:03:17,327 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 47 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-10 22:03:17,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 287 flow [2024-11-10 22:03:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:03:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:03:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-10 22:03:17,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-10 22:03:17,328 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 131 flow. Second operand 3 states and 114 transitions. [2024-11-10 22:03:17,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 287 flow [2024-11-10 22:03:17,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:03:17,330 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 145 flow [2024-11-10 22:03:17,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-10 22:03:17,331 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-10 22:03:17,331 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 145 flow [2024-11-10 22:03:17,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:17,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:17,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:17,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:03:17,332 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:17,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:17,333 INFO L85 PathProgramCache]: Analyzing trace with hash -224073259, now seen corresponding path program 1 times [2024-11-10 22:03:17,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:17,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995744738] [2024-11-10 22:03:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:17,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:17,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995744738] [2024-11-10 22:03:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995744738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:17,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:17,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:17,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416165474] [2024-11-10 22:03:17,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:17,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:17,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:17,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:17,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:17,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-11-10 22:03:17,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:17,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:17,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:17,700 INFO L124 PetriNetUnfolderBase]: 1867/3280 cut-off events. [2024-11-10 22:03:17,700 INFO L125 PetriNetUnfolderBase]: For 550/708 co-relation queries the response was YES. [2024-11-10 22:03:17,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 3280 events. 1867/3280 cut-off events. For 550/708 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22453 event pairs, 453 based on Foata normal form. 143/2828 useless extension candidates. Maximal degree in co-relation 7285. Up to 1719 conditions per place. [2024-11-10 22:03:17,721 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-10 22:03:17,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 86 transitions, 377 flow [2024-11-10 22:03:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-11-10 22:03:17,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-11-10 22:03:17,725 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 145 flow. Second operand 4 states and 149 transitions. [2024-11-10 22:03:17,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 86 transitions, 377 flow [2024-11-10 22:03:17,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:03:17,729 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 167 flow [2024-11-10 22:03:17,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-10 22:03:17,731 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-10 22:03:17,731 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 167 flow [2024-11-10 22:03:17,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-11-10 22:03:17,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:17,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:17,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:03:17,732 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:17,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:17,733 INFO L85 PathProgramCache]: Analyzing trace with hash 134132928, now seen corresponding path program 1 times [2024-11-10 22:03:17,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:17,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791403731] [2024-11-10 22:03:17,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:17,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:17,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:17,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791403731] [2024-11-10 22:03:17,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791403731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:17,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:17,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:17,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899467739] [2024-11-10 22:03:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:17,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:17,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:17,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:17,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-10 22:03:17,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-10 22:03:17,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:17,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-10 22:03:17,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:18,036 INFO L124 PetriNetUnfolderBase]: 1381/2687 cut-off events. [2024-11-10 22:03:18,037 INFO L125 PetriNetUnfolderBase]: For 657/845 co-relation queries the response was YES. [2024-11-10 22:03:18,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6077 conditions, 2687 events. 1381/2687 cut-off events. For 657/845 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19821 event pairs, 159 based on Foata normal form. 179/2399 useless extension candidates. Maximal degree in co-relation 6053. Up to 1551 conditions per place. [2024-11-10 22:03:18,053 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 63 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-10 22:03:18,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 415 flow [2024-11-10 22:03:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:18,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-10 22:03:18,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-10 22:03:18,055 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 167 flow. Second operand 4 states and 145 transitions. [2024-11-10 22:03:18,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 415 flow [2024-11-10 22:03:18,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:03:18,058 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 185 flow [2024-11-10 22:03:18,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-10 22:03:18,059 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-11-10 22:03:18,059 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 185 flow [2024-11-10 22:03:18,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-10 22:03:18,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:18,059 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:18,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:03:18,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:18,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1279990136, now seen corresponding path program 1 times [2024-11-10 22:03:18,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:18,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424033911] [2024-11-10 22:03:18,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:18,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:18,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:18,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424033911] [2024-11-10 22:03:18,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424033911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:18,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:18,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354825442] [2024-11-10 22:03:18,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:18,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:18,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:18,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:18,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:18,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:18,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-10 22:03:18,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:18,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:18,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:18,417 INFO L124 PetriNetUnfolderBase]: 2225/3891 cut-off events. [2024-11-10 22:03:18,417 INFO L125 PetriNetUnfolderBase]: For 1992/2810 co-relation queries the response was YES. [2024-11-10 22:03:18,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9617 conditions, 3891 events. 2225/3891 cut-off events. For 1992/2810 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28024 event pairs, 457 based on Foata normal form. 261/3540 useless extension candidates. Maximal degree in co-relation 9590. Up to 2241 conditions per place. [2024-11-10 22:03:18,438 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-10 22:03:18,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 459 flow [2024-11-10 22:03:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-10 22:03:18,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-10 22:03:18,439 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 185 flow. Second operand 4 states and 145 transitions. [2024-11-10 22:03:18,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 459 flow [2024-11-10 22:03:18,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 92 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:18,442 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 205 flow [2024-11-10 22:03:18,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-11-10 22:03:18,443 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-10 22:03:18,443 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 205 flow [2024-11-10 22:03:18,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-10 22:03:18,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:18,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:18,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:03:18,444 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:18,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash -47953521, now seen corresponding path program 1 times [2024-11-10 22:03:18,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:18,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975708853] [2024-11-10 22:03:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:18,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:18,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:18,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975708853] [2024-11-10 22:03:18,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975708853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:18,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:18,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:03:18,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149346693] [2024-11-10 22:03:18,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:18,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:18,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:18,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:18,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:18,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:03:18,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:18,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:18,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:18,702 INFO L124 PetriNetUnfolderBase]: 1279/2649 cut-off events. [2024-11-10 22:03:18,703 INFO L125 PetriNetUnfolderBase]: For 1134/1629 co-relation queries the response was YES. [2024-11-10 22:03:18,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 2649 events. 1279/2649 cut-off events. For 1134/1629 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19011 event pairs, 183 based on Foata normal form. 80/2418 useless extension candidates. Maximal degree in co-relation 6626. Up to 954 conditions per place. [2024-11-10 22:03:18,718 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-10 22:03:18,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 503 flow [2024-11-10 22:03:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-10 22:03:18,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-10 22:03:18,720 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 205 flow. Second operand 5 states and 190 transitions. [2024-11-10 22:03:18,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 503 flow [2024-11-10 22:03:18,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:03:18,725 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 227 flow [2024-11-10 22:03:18,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-11-10 22:03:18,725 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-10 22:03:18,726 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 227 flow [2024-11-10 22:03:18,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:03:18,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:18,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:18,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:03:18,726 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:18,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526994, now seen corresponding path program 1 times [2024-11-10 22:03:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:18,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773557763] [2024-11-10 22:03:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:18,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:18,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:18,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773557763] [2024-11-10 22:03:18,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773557763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:18,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:18,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:03:18,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321925827] [2024-11-10 22:03:18,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:18,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:18,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:18,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:03:18,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:18,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:18,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:19,004 INFO L124 PetriNetUnfolderBase]: 1331/2831 cut-off events. [2024-11-10 22:03:19,004 INFO L125 PetriNetUnfolderBase]: For 1783/2226 co-relation queries the response was YES. [2024-11-10 22:03:19,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 2831 events. 1331/2831 cut-off events. For 1783/2226 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 20944 event pairs, 255 based on Foata normal form. 130/2866 useless extension candidates. Maximal degree in co-relation 7364. Up to 1260 conditions per place. [2024-11-10 22:03:19,018 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-11-10 22:03:19,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 531 flow [2024-11-10 22:03:19,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-10 22:03:19,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-11-10 22:03:19,020 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 227 flow. Second operand 5 states and 191 transitions. [2024-11-10 22:03:19,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 531 flow [2024-11-10 22:03:19,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 101 transitions, 520 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:19,024 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 252 flow [2024-11-10 22:03:19,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-11-10 22:03:19,025 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-11-10 22:03:19,025 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 252 flow [2024-11-10 22:03:19,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:03:19,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:19,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:19,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:03:19,026 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:19,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667573, now seen corresponding path program 1 times [2024-11-10 22:03:19,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:19,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275639199] [2024-11-10 22:03:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:19,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:19,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:19,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275639199] [2024-11-10 22:03:19,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275639199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:19,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:19,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:03:19,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899817624] [2024-11-10 22:03:19,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:19,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:19,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:19,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:03:19,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:19,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:19,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:19,293 INFO L124 PetriNetUnfolderBase]: 1187/2615 cut-off events. [2024-11-10 22:03:19,294 INFO L125 PetriNetUnfolderBase]: For 2211/2602 co-relation queries the response was YES. [2024-11-10 22:03:19,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7057 conditions, 2615 events. 1187/2615 cut-off events. For 2211/2602 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19349 event pairs, 303 based on Foata normal form. 120/2672 useless extension candidates. Maximal degree in co-relation 7024. Up to 1384 conditions per place. [2024-11-10 22:03:19,304 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 56 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-10 22:03:19,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 466 flow [2024-11-10 22:03:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-11-10 22:03:19,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6641509433962264 [2024-11-10 22:03:19,305 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 252 flow. Second operand 5 states and 176 transitions. [2024-11-10 22:03:19,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 466 flow [2024-11-10 22:03:19,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 451 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:19,309 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 253 flow [2024-11-10 22:03:19,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-11-10 22:03:19,310 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-10 22:03:19,310 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 253 flow [2024-11-10 22:03:19,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:03:19,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:19,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:19,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:03:19,311 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:19,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:19,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667574, now seen corresponding path program 1 times [2024-11-10 22:03:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:19,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240902588] [2024-11-10 22:03:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:19,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:19,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240902588] [2024-11-10 22:03:19,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240902588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:19,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:19,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:03:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100904489] [2024-11-10 22:03:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:19,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:19,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:19,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:03:19,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:19,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:19,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:19,677 INFO L124 PetriNetUnfolderBase]: 1235/2735 cut-off events. [2024-11-10 22:03:19,677 INFO L125 PetriNetUnfolderBase]: For 2633/3028 co-relation queries the response was YES. [2024-11-10 22:03:19,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7410 conditions, 2735 events. 1235/2735 cut-off events. For 2633/3028 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 20411 event pairs, 295 based on Foata normal form. 112/2832 useless extension candidates. Maximal degree in co-relation 7376. Up to 1400 conditions per place. [2024-11-10 22:03:19,692 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2024-11-10 22:03:19,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 535 flow [2024-11-10 22:03:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-10 22:03:19,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056603773584905 [2024-11-10 22:03:19,694 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 253 flow. Second operand 5 states and 187 transitions. [2024-11-10 22:03:19,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 535 flow [2024-11-10 22:03:19,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:03:19,698 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 275 flow [2024-11-10 22:03:19,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-11-10 22:03:19,699 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-10 22:03:19,699 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 275 flow [2024-11-10 22:03:19,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:03:19,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:19,699 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:19,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:03:19,700 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:19,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -864154063, now seen corresponding path program 1 times [2024-11-10 22:03:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941388859] [2024-11-10 22:03:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:19,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:19,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:19,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941388859] [2024-11-10 22:03:19,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941388859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:19,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212332257] [2024-11-10 22:03:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:19,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:19,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:19,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:19,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:03:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:19,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:03:19,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:19,921 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:19,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212332257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:19,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:19,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-10 22:03:19,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758286481] [2024-11-10 22:03:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:19,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:19,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:03:19,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-10 22:03:19,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 22:03:19,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:19,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-10 22:03:19,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:20,183 INFO L124 PetriNetUnfolderBase]: 1235/2790 cut-off events. [2024-11-10 22:03:20,184 INFO L125 PetriNetUnfolderBase]: For 3989/4333 co-relation queries the response was YES. [2024-11-10 22:03:20,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 2790 events. 1235/2790 cut-off events. For 3989/4333 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 21767 event pairs, 187 based on Foata normal form. 191/2948 useless extension candidates. Maximal degree in co-relation 7651. Up to 1444 conditions per place. [2024-11-10 22:03:20,203 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-10 22:03:20,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 521 flow [2024-11-10 22:03:20,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:20,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-10 22:03:20,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2024-11-10 22:03:20,204 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 275 flow. Second operand 4 states and 135 transitions. [2024-11-10 22:03:20,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 521 flow [2024-11-10 22:03:20,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 501 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:20,209 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 264 flow [2024-11-10 22:03:20,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-11-10 22:03:20,210 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-10 22:03:20,210 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 264 flow [2024-11-10 22:03:20,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 22:03:20,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:20,211 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:20,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:03:20,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 22:03:20,412 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:20,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1531728658, now seen corresponding path program 1 times [2024-11-10 22:03:20,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:20,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809671745] [2024-11-10 22:03:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809671745] [2024-11-10 22:03:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809671745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104243358] [2024-11-10 22:03:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:20,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:20,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:20,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:20,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:03:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:20,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:20,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:20,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:20,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104243358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:20,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:20,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:03:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263421416] [2024-11-10 22:03:20,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:20,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:03:20,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:03:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:03:20,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:20,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-11-10 22:03:20,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:20,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:20,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:20,966 INFO L124 PetriNetUnfolderBase]: 1837/3355 cut-off events. [2024-11-10 22:03:20,966 INFO L125 PetriNetUnfolderBase]: For 5060/5552 co-relation queries the response was YES. [2024-11-10 22:03:20,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 3355 events. 1837/3355 cut-off events. For 5060/5552 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23327 event pairs, 375 based on Foata normal form. 133/3370 useless extension candidates. Maximal degree in co-relation 10017. Up to 1466 conditions per place. [2024-11-10 22:03:20,987 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 91 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2024-11-10 22:03:20,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 693 flow [2024-11-10 22:03:20,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-10 22:03:20,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-10 22:03:20,989 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 264 flow. Second operand 6 states and 201 transitions. [2024-11-10 22:03:20,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 693 flow [2024-11-10 22:03:20,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 687 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:20,995 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 267 flow [2024-11-10 22:03:20,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2024-11-10 22:03:20,996 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-10 22:03:20,996 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 267 flow [2024-11-10 22:03:20,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-11-10 22:03:20,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:20,996 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:21,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:03:21,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 22:03:21,198 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:21,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1018971992, now seen corresponding path program 1 times [2024-11-10 22:03:21,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:21,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598968645] [2024-11-10 22:03:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:21,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598968645] [2024-11-10 22:03:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598968645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549146776] [2024-11-10 22:03:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:21,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:21,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:21,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:21,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:03:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:21,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:03:21,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:21,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:21,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549146776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:21,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:21,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-10 22:03:21,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805766296] [2024-11-10 22:03:21,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:21,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 22:03:21,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:21,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 22:03:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:03:21,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-10 22:03:21,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 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) [2024-11-10 22:03:21,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:21,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-10 22:03:21,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:22,147 INFO L124 PetriNetUnfolderBase]: 3515/7488 cut-off events. [2024-11-10 22:03:22,148 INFO L125 PetriNetUnfolderBase]: For 11263/12014 co-relation queries the response was YES. [2024-11-10 22:03:22,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20802 conditions, 7488 events. 3515/7488 cut-off events. For 11263/12014 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 64597 event pairs, 187 based on Foata normal form. 174/7553 useless extension candidates. Maximal degree in co-relation 20768. Up to 1445 conditions per place. [2024-11-10 22:03:22,187 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 135 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-10 22:03:22,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 162 transitions, 1093 flow [2024-11-10 22:03:22,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:22,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-11-10 22:03:22,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-11-10 22:03:22,188 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 267 flow. Second operand 6 states and 231 transitions. [2024-11-10 22:03:22,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 162 transitions, 1093 flow [2024-11-10 22:03:22,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 162 transitions, 1084 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:22,196 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 298 flow [2024-11-10 22:03:22,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-11-10 22:03:22,197 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-10 22:03:22,197 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 298 flow [2024-11-10 22:03:22,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 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) [2024-11-10 22:03:22,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:22,197 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:22,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:03:22,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:22,398 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:22,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:22,399 INFO L85 PathProgramCache]: Analyzing trace with hash -238947900, now seen corresponding path program 1 times [2024-11-10 22:03:22,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678047700] [2024-11-10 22:03:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:22,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:03:22,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:22,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678047700] [2024-11-10 22:03:22,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678047700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:22,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:22,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886669863] [2024-11-10 22:03:22,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:22,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:22,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:22,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:22,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:03:22,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-10 22:03:22,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:22,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:03:22,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:23,145 INFO L124 PetriNetUnfolderBase]: 5489/9683 cut-off events. [2024-11-10 22:03:23,146 INFO L125 PetriNetUnfolderBase]: For 16145/17818 co-relation queries the response was YES. [2024-11-10 22:03:23,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29537 conditions, 9683 events. 5489/9683 cut-off events. For 16145/17818 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 74904 event pairs, 2581 based on Foata normal form. 452/9884 useless extension candidates. Maximal degree in co-relation 29500. Up to 4789 conditions per place. [2024-11-10 22:03:23,203 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 83 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-10 22:03:23,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 107 transitions, 698 flow [2024-11-10 22:03:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-11-10 22:03:23,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6509433962264151 [2024-11-10 22:03:23,204 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 298 flow. Second operand 4 states and 138 transitions. [2024-11-10 22:03:23,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 107 transitions, 698 flow [2024-11-10 22:03:23,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 107 transitions, 672 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:23,218 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 302 flow [2024-11-10 22:03:23,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2024-11-10 22:03:23,219 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-11-10 22:03:23,219 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 302 flow [2024-11-10 22:03:23,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-10 22:03:23,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:23,220 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:23,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:03:23,220 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:23,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:23,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1523360417, now seen corresponding path program 1 times [2024-11-10 22:03:23,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:23,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419278484] [2024-11-10 22:03:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:23,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:23,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419278484] [2024-11-10 22:03:23,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419278484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:23,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894684019] [2024-11-10 22:03:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:23,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:23,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:23,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:23,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:03:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:23,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:23,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:23,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894684019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:23,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:23,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:03:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742108851] [2024-11-10 22:03:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:23,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:03:23,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:03:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:03:23,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-10 22:03:23,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-11-10 22:03:23,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:23,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-10 22:03:23,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:24,106 INFO L124 PetriNetUnfolderBase]: 4427/8158 cut-off events. [2024-11-10 22:03:24,106 INFO L125 PetriNetUnfolderBase]: For 16976/17692 co-relation queries the response was YES. [2024-11-10 22:03:24,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24824 conditions, 8158 events. 4427/8158 cut-off events. For 16976/17692 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 64137 event pairs, 187 based on Foata normal form. 450/8347 useless extension candidates. Maximal degree in co-relation 24786. Up to 4560 conditions per place. [2024-11-10 22:03:24,153 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 100 selfloop transitions, 8 changer transitions 0/128 dead transitions. [2024-11-10 22:03:24,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 901 flow [2024-11-10 22:03:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-10 22:03:24,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-10 22:03:24,155 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 302 flow. Second operand 6 states and 198 transitions. [2024-11-10 22:03:24,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 901 flow [2024-11-10 22:03:24,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 887 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:24,168 INFO L231 Difference]: Finished difference. Result has 87 places, 62 transitions, 306 flow [2024-11-10 22:03:24,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=87, PETRI_TRANSITIONS=62} [2024-11-10 22:03:24,169 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-10 22:03:24,169 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 62 transitions, 306 flow [2024-11-10 22:03:24,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-11-10 22:03:24,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:24,169 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:24,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:03:24,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:24,370 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:24,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1241379951, now seen corresponding path program 1 times [2024-11-10 22:03:24,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:24,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082022682] [2024-11-10 22:03:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:24,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:24,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:24,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082022682] [2024-11-10 22:03:24,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082022682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:24,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182334771] [2024-11-10 22:03:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:24,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:24,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:24,426 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:24,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:03:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:24,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:24,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:24,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:24,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182334771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:24,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:24,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:03:24,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385799756] [2024-11-10 22:03:24,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:24,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:03:24,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:24,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:03:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:03:24,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:24,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 62 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-10 22:03:24,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:24,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:24,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:25,385 INFO L124 PetriNetUnfolderBase]: 4991/8868 cut-off events. [2024-11-10 22:03:25,386 INFO L125 PetriNetUnfolderBase]: For 17348/17719 co-relation queries the response was YES. [2024-11-10 22:03:25,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27871 conditions, 8868 events. 4991/8868 cut-off events. For 17348/17719 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 68817 event pairs, 1021 based on Foata normal form. 198/8671 useless extension candidates. Maximal degree in co-relation 27832. Up to 3938 conditions per place. [2024-11-10 22:03:25,455 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 97 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-10 22:03:25,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 837 flow [2024-11-10 22:03:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-11-10 22:03:25,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-11-10 22:03:25,457 INFO L175 Difference]: Start difference. First operand has 87 places, 62 transitions, 306 flow. Second operand 6 states and 195 transitions. [2024-11-10 22:03:25,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 119 transitions, 837 flow [2024-11-10 22:03:25,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 823 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:25,473 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 307 flow [2024-11-10 22:03:25,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2024-11-10 22:03:25,474 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-10 22:03:25,474 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 307 flow [2024-11-10 22:03:25,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-10 22:03:25,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:25,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:25,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:03:25,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 22:03:25,676 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:25,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash 20467549, now seen corresponding path program 1 times [2024-11-10 22:03:25,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:25,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228038180] [2024-11-10 22:03:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:25,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:03:25,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:25,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228038180] [2024-11-10 22:03:25,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228038180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:25,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:25,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:25,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120882147] [2024-11-10 22:03:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:25,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:25,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:25,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:25,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-10 22:03:25,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:25,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:25,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:26,302 INFO L124 PetriNetUnfolderBase]: 4731/8336 cut-off events. [2024-11-10 22:03:26,302 INFO L125 PetriNetUnfolderBase]: For 18507/18761 co-relation queries the response was YES. [2024-11-10 22:03:26,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26863 conditions, 8336 events. 4731/8336 cut-off events. For 18507/18761 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 63011 event pairs, 802 based on Foata normal form. 228/8486 useless extension candidates. Maximal degree in co-relation 26824. Up to 4561 conditions per place. [2024-11-10 22:03:26,355 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 78 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-10 22:03:26,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 741 flow [2024-11-10 22:03:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-10 22:03:26,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6462264150943396 [2024-11-10 22:03:26,357 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 307 flow. Second operand 4 states and 137 transitions. [2024-11-10 22:03:26,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 741 flow [2024-11-10 22:03:26,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 730 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-10 22:03:26,375 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 320 flow [2024-11-10 22:03:26,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2024-11-10 22:03:26,376 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-10 22:03:26,376 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 320 flow [2024-11-10 22:03:26,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-10 22:03:26,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:26,376 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:26,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 22:03:26,377 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:26,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash 171927439, now seen corresponding path program 1 times [2024-11-10 22:03:26,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:26,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124686750] [2024-11-10 22:03:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:26,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:03:26,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:26,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124686750] [2024-11-10 22:03:26,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124686750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:26,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:26,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:26,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429684264] [2024-11-10 22:03:26,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:26,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:26,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:26,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:26,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:03:26,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-10 22:03:26,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:26,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:03:26,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:27,026 INFO L124 PetriNetUnfolderBase]: 5475/9279 cut-off events. [2024-11-10 22:03:27,027 INFO L125 PetriNetUnfolderBase]: For 20142/20230 co-relation queries the response was YES. [2024-11-10 22:03:27,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30628 conditions, 9279 events. 5475/9279 cut-off events. For 20142/20230 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 69918 event pairs, 2605 based on Foata normal form. 198/9229 useless extension candidates. Maximal degree in co-relation 30589. Up to 4793 conditions per place. [2024-11-10 22:03:27,075 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 79 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-11-10 22:03:27,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 734 flow [2024-11-10 22:03:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-10 22:03:27,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-10 22:03:27,077 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 320 flow. Second operand 4 states and 134 transitions. [2024-11-10 22:03:27,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 734 flow [2024-11-10 22:03:27,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 692 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:27,091 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 318 flow [2024-11-10 22:03:27,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2024-11-10 22:03:27,092 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-10 22:03:27,092 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 318 flow [2024-11-10 22:03:27,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-10 22:03:27,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:27,092 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:27,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 22:03:27,092 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:27,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:27,093 INFO L85 PathProgramCache]: Analyzing trace with hash -196956509, now seen corresponding path program 1 times [2024-11-10 22:03:27,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:27,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877492186] [2024-11-10 22:03:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:27,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:27,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877492186] [2024-11-10 22:03:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877492186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535431914] [2024-11-10 22:03:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:27,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:27,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:27,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:27,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:03:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:27,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:27,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:27,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:27,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535431914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:27,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:27,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-10 22:03:27,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080560896] [2024-11-10 22:03:27,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:27,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:03:27,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:27,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:03:27,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:03:27,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:27,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 318 flow. Second operand has 14 states, 14 states have (on average 27.642857142857142) internal successors, (387), 14 states have internal predecessors, (387), 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) [2024-11-10 22:03:27,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:27,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:27,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:30,320 INFO L124 PetriNetUnfolderBase]: 13739/28619 cut-off events. [2024-11-10 22:03:30,321 INFO L125 PetriNetUnfolderBase]: For 68452/68755 co-relation queries the response was YES. [2024-11-10 22:03:30,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90937 conditions, 28619 events. 13739/28619 cut-off events. For 68452/68755 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 282988 event pairs, 417 based on Foata normal form. 1762/30344 useless extension candidates. Maximal degree in co-relation 90897. Up to 5133 conditions per place. [2024-11-10 22:03:30,534 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 418 selfloop transitions, 71 changer transitions 0/510 dead transitions. [2024-11-10 22:03:30,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 510 transitions, 3786 flow [2024-11-10 22:03:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 22:03:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 22:03:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1070 transitions. [2024-11-10 22:03:30,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7210242587601078 [2024-11-10 22:03:30,539 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 318 flow. Second operand 28 states and 1070 transitions. [2024-11-10 22:03:30,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 510 transitions, 3786 flow [2024-11-10 22:03:30,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 510 transitions, 3748 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:30,600 INFO L231 Difference]: Finished difference. Result has 128 places, 133 transitions, 1178 flow [2024-11-10 22:03:30,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1178, PETRI_PLACES=128, PETRI_TRANSITIONS=133} [2024-11-10 22:03:30,601 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2024-11-10 22:03:30,601 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 133 transitions, 1178 flow [2024-11-10 22:03:30,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.642857142857142) internal successors, (387), 14 states have internal predecessors, (387), 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) [2024-11-10 22:03:30,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:30,602 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:30,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:03:30,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 22:03:30,803 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:30,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:30,804 INFO L85 PathProgramCache]: Analyzing trace with hash 218461820, now seen corresponding path program 1 times [2024-11-10 22:03:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:30,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806889305] [2024-11-10 22:03:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:30,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:30,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806889305] [2024-11-10 22:03:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806889305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:30,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93892142] [2024-11-10 22:03:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:30,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:30,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:30,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:30,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:03:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:30,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:30,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:30,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:30,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93892142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:30,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:30,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-10 22:03:30,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175608269] [2024-11-10 22:03:30,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:30,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:03:30,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:03:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:03:30,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:30,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 133 transitions, 1178 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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) [2024-11-10 22:03:30,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:30,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:30,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:33,851 INFO L124 PetriNetUnfolderBase]: 11473/24751 cut-off events. [2024-11-10 22:03:33,852 INFO L125 PetriNetUnfolderBase]: For 232706/232959 co-relation queries the response was YES. [2024-11-10 22:03:33,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96524 conditions, 24751 events. 11473/24751 cut-off events. For 232706/232959 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 247636 event pairs, 2025 based on Foata normal form. 2024/26586 useless extension candidates. Maximal degree in co-relation 96465. Up to 8330 conditions per place. [2024-11-10 22:03:34,039 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 91 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-11-10 22:03:34,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 139 transitions, 1389 flow [2024-11-10 22:03:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-10 22:03:34,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2024-11-10 22:03:34,041 INFO L175 Difference]: Start difference. First operand has 128 places, 133 transitions, 1178 flow. Second operand 6 states and 206 transitions. [2024-11-10 22:03:34,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 139 transitions, 1389 flow [2024-11-10 22:03:34,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 1148 flow, removed 99 selfloop flow, removed 12 redundant places. [2024-11-10 22:03:34,552 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 715 flow [2024-11-10 22:03:34,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=715, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-10 22:03:34,552 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-10 22:03:34,552 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 715 flow [2024-11-10 22:03:34,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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) [2024-11-10 22:03:34,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:34,553 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:34,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:03:34,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:34,756 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:34,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1715647968, now seen corresponding path program 1 times [2024-11-10 22:03:34,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:34,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333507064] [2024-11-10 22:03:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:34,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:34,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:34,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333507064] [2024-11-10 22:03:34,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333507064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:34,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761386007] [2024-11-10 22:03:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:34,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:34,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:34,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:34,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:03:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:34,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:03:34,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:34,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:35,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761386007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:35,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:35,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-10 22:03:35,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679837489] [2024-11-10 22:03:35,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:35,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 22:03:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:35,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 22:03:35,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-10 22:03:35,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:35,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 715 flow. Second operand has 17 states, 17 states have (on average 27.529411764705884) internal successors, (468), 17 states have internal predecessors, (468), 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) [2024-11-10 22:03:35,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:35,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:35,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:39,474 INFO L124 PetriNetUnfolderBase]: 16225/35787 cut-off events. [2024-11-10 22:03:39,474 INFO L125 PetriNetUnfolderBase]: For 306718/307081 co-relation queries the response was YES. [2024-11-10 22:03:39,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127896 conditions, 35787 events. 16225/35787 cut-off events. For 306718/307081 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 378209 event pairs, 659 based on Foata normal form. 1108/36792 useless extension candidates. Maximal degree in co-relation 127841. Up to 9039 conditions per place. [2024-11-10 22:03:39,790 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 322 selfloop transitions, 54 changer transitions 0/397 dead transitions. [2024-11-10 22:03:39,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 397 transitions, 3141 flow [2024-11-10 22:03:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:03:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:03:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 775 transitions. [2024-11-10 22:03:39,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6963162623539982 [2024-11-10 22:03:39,792 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 715 flow. Second operand 21 states and 775 transitions. [2024-11-10 22:03:39,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 397 transitions, 3141 flow [2024-11-10 22:03:40,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 397 transitions, 3124 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:40,347 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1104 flow [2024-11-10 22:03:40,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1104, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-11-10 22:03:40,348 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-10 22:03:40,348 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1104 flow [2024-11-10 22:03:40,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 27.529411764705884) internal successors, (468), 17 states have internal predecessors, (468), 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) [2024-11-10 22:03:40,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:40,348 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:40,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:03:40,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:40,549 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:40,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash -552312867, now seen corresponding path program 1 times [2024-11-10 22:03:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:40,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973996512] [2024-11-10 22:03:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:40,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:40,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973996512] [2024-11-10 22:03:40,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973996512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892733583] [2024-11-10 22:03:40,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:40,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:40,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:40,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:40,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:03:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:40,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:03:40,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:40,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:40,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892733583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:40,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:40,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-10 22:03:40,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525629574] [2024-11-10 22:03:40,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:40,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 22:03:40,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:40,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 22:03:40,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-10 22:03:40,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:40,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1104 flow. Second operand has 20 states, 20 states have (on average 27.45) internal successors, (549), 20 states have internal predecessors, (549), 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) [2024-11-10 22:03:40,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:40,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:40,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:50,536 INFO L124 PetriNetUnfolderBase]: 30701/69095 cut-off events. [2024-11-10 22:03:50,536 INFO L125 PetriNetUnfolderBase]: For 1102364/1103054 co-relation queries the response was YES. [2024-11-10 22:03:51,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248729 conditions, 69095 events. 30701/69095 cut-off events. For 1102364/1103054 co-relation queries the response was YES. Maximal size of possible extension queue 1910. Compared 799901 event pairs, 1517 based on Foata normal form. 3652/72710 useless extension candidates. Maximal degree in co-relation 248668. Up to 8063 conditions per place. [2024-11-10 22:03:51,380 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 555 selfloop transitions, 118 changer transitions 0/694 dead transitions. [2024-11-10 22:03:51,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 694 transitions, 5913 flow [2024-11-10 22:03:51,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 22:03:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-10 22:03:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1378 transitions. [2024-11-10 22:03:51,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-10 22:03:51,383 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1104 flow. Second operand 37 states and 1378 transitions. [2024-11-10 22:03:51,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 694 transitions, 5913 flow [2024-11-10 22:03:53,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 694 transitions, 5771 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-11-10 22:03:53,860 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2103 flow [2024-11-10 22:03:53,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2103, PETRI_PLACES=176, PETRI_TRANSITIONS=180} [2024-11-10 22:03:53,860 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-11-10 22:03:53,860 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2103 flow [2024-11-10 22:03:53,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 27.45) internal successors, (549), 20 states have internal predecessors, (549), 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) [2024-11-10 22:03:53,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:53,861 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:53,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:03:54,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:54,066 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:54,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:54,066 INFO L85 PathProgramCache]: Analyzing trace with hash -25267541, now seen corresponding path program 2 times [2024-11-10 22:03:54,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:54,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152020602] [2024-11-10 22:03:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:54,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:54,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:54,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152020602] [2024-11-10 22:03:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152020602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:54,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11912479] [2024-11-10 22:03:54,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:03:54,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:54,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:54,192 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:03:54,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:03:54,244 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:03:54,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:03:54,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 22:03:54,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:54,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:54,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11912479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:54,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:54,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-10 22:03:54,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052485983] [2024-11-10 22:03:54,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:54,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 22:03:54,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:54,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 22:03:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-10 22:03:54,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-10 22:03:54,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 180 transitions, 2103 flow. Second operand has 17 states, 17 states have (on average 25.88235294117647) internal successors, (440), 17 states have internal predecessors, (440), 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) [2024-11-10 22:03:54,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:54,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-10 22:03:54,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand