./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --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/weaver/parallel-misc-4.wvr.c -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 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:23:56,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:23:56,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:23:56,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:23:56,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:23:56,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:23:56,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:23:56,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:23:56,243 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:23:56,243 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:23:56,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:23:56,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:23:56,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:23:56,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:23:56,245 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:23:56,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:23:56,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:23:56,246 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:23:56,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:23:56,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:23:56,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:23:56,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:23:56,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:23:56,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:23:56,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:23:56,249 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:23:56,249 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:23:56,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:23:56,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:23:56,250 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:23:56,250 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:23:56,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:23:56,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:23:56,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:23:56,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:56,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:23:56,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:23:56,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:23:56,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:23:56,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:23:56,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:23:56,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:23:56,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:23:56,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:23:56,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c [2024-11-10 22:23:56,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:23:56,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:23:56,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:23:56,546 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:23:56,547 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:23:56,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-10 22:23:57,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:23:58,148 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:23:58,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-10 22:23:58,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9f5d834/fe31db1c538a47429de23c0e244e4019/FLAGeb664fc18 [2024-11-10 22:23:58,169 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9f5d834/fe31db1c538a47429de23c0e244e4019 [2024-11-10 22:23:58,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:23:58,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:23:58,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:58,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:23:58,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:23:58,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415c3216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58, skipping insertion in model container [2024-11-10 22:23:58,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,201 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:23:58,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:58,409 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:23:58,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:58,444 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:23:58,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58 WrapperNode [2024-11-10 22:23:58,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:58,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:58,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:23:58,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:23:58,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,476 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-11-10 22:23:58,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:58,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:23:58,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:23:58,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:23:58,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,513 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 22:23:58,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,518 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:23:58,523 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:23:58,523 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:23:58,523 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:23:58,524 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:58,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:58,561 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 22:23:58,564 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 22:23:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:23:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:23:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:23:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:23:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:23:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:23:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:23:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:23:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:23:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:23:58,622 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 22:23:58,750 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:23:58,753 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:23:59,019 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:23:59,019 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:23:59,172 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:23:59,173 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:23:59,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:59 BoogieIcfgContainer [2024-11-10 22:23:59,173 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:23:59,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:23:59,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:23:59,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:23:59,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:23:58" (1/3) ... [2024-11-10 22:23:59,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703c2698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:59, skipping insertion in model container [2024-11-10 22:23:59,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (2/3) ... [2024-11-10 22:23:59,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703c2698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:59, skipping insertion in model container [2024-11-10 22:23:59,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:59" (3/3) ... [2024-11-10 22:23:59,188 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2024-11-10 22:23:59,204 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:23:59,205 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 22:23:59,205 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:23:59,290 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:23:59,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 127 flow [2024-11-10 22:23:59,375 INFO L124 PetriNetUnfolderBase]: 6/50 cut-off events. [2024-11-10 22:23:59,375 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:23:59,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 6/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 140 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-10 22:23:59,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 53 transitions, 127 flow [2024-11-10 22:23:59,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 47 transitions, 106 flow [2024-11-10 22:23:59,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:23:59,409 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;@2b58f1a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:23:59,409 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-10 22:23:59,423 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:23:59,423 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-11-10 22:23:59,423 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:23:59,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:59,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:59,426 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:23:59,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:59,432 INFO L85 PathProgramCache]: Analyzing trace with hash 125735570, now seen corresponding path program 1 times [2024-11-10 22:23:59,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:59,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021195113] [2024-11-10 22:23:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:59,743 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 22:23:59,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021195113] [2024-11-10 22:23:59,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021195113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:59,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:59,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949808236] [2024-11-10 22:23:59,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:59,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:23:59,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:23:59,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:23:59,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:23:59,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 22:23:59,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:59,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:23:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:00,310 INFO L124 PetriNetUnfolderBase]: 1988/3329 cut-off events. [2024-11-10 22:24:00,311 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-10 22:24:00,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6229 conditions, 3329 events. 1988/3329 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 22515 event pairs, 530 based on Foata normal form. 293/2387 useless extension candidates. Maximal degree in co-relation 5922. Up to 1533 conditions per place. [2024-11-10 22:24:00,352 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 37 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-11-10 22:24:00,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 239 flow [2024-11-10 22:24:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-10 22:24:00,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-10 22:24:00,367 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 106 flow. Second operand 3 states and 114 transitions. [2024-11-10 22:24:00,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 239 flow [2024-11-10 22:24:00,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 229 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:24:00,382 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 164 flow [2024-11-10 22:24:00,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2024-11-10 22:24:00,391 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-11-10 22:24:00,392 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 164 flow [2024-11-10 22:24:00,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 22:24:00,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:00,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:00,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:24:00,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:24:00,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash 125735571, now seen corresponding path program 1 times [2024-11-10 22:24:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:00,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233349623] [2024-11-10 22:24:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:00,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:00,528 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 22:24:00,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:00,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233349623] [2024-11-10 22:24:00,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233349623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:00,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:00,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:24:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547247829] [2024-11-10 22:24:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:00,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:00,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:00,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:24:00,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 22:24:00,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:00,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:24:00,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:01,055 INFO L124 PetriNetUnfolderBase]: 3170/5213 cut-off events. [2024-11-10 22:24:01,056 INFO L125 PetriNetUnfolderBase]: For 3133/3133 co-relation queries the response was YES. [2024-11-10 22:24:01,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11975 conditions, 5213 events. 3170/5213 cut-off events. For 3133/3133 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 33686 event pairs, 534 based on Foata normal form. 308/4709 useless extension candidates. Maximal degree in co-relation 8040. Up to 2609 conditions per place. [2024-11-10 22:24:01,100 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 45 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-11-10 22:24:01,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 337 flow [2024-11-10 22:24:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-10 22:24:01,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2024-11-10 22:24:01,104 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 164 flow. Second operand 3 states and 110 transitions. [2024-11-10 22:24:01,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 337 flow [2024-11-10 22:24:01,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:01,126 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 230 flow [2024-11-10 22:24:01,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2024-11-10 22:24:01,128 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-11-10 22:24:01,128 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 230 flow [2024-11-10 22:24:01,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 22:24:01,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:01,128 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:01,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:24:01,129 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:24:01,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:01,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1113294594, now seen corresponding path program 1 times [2024-11-10 22:24:01,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:01,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419727116] [2024-11-10 22:24:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:01,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 22:24:01,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:01,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419727116] [2024-11-10 22:24:01,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419727116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:01,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:01,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:24:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728541646] [2024-11-10 22:24:01,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:01,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:01,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:01,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-10 22:24:01,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 22:24:01,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:01,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-10 22:24:01,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:01,863 INFO L124 PetriNetUnfolderBase]: 3718/5817 cut-off events. [2024-11-10 22:24:01,864 INFO L125 PetriNetUnfolderBase]: For 5139/6040 co-relation queries the response was YES. [2024-11-10 22:24:01,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15547 conditions, 5817 events. 3718/5817 cut-off events. For 5139/6040 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 37173 event pairs, 1081 based on Foata normal form. 4/5125 useless extension candidates. Maximal degree in co-relation 12914. Up to 2534 conditions per place. [2024-11-10 22:24:01,919 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-10 22:24:01,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 463 flow [2024-11-10 22:24:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:01,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-10 22:24:01,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6352201257861635 [2024-11-10 22:24:01,924 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 230 flow. Second operand 3 states and 101 transitions. [2024-11-10 22:24:01,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 463 flow [2024-11-10 22:24:01,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 439 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:01,935 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 234 flow [2024-11-10 22:24:01,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2024-11-10 22:24:01,936 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-11-10 22:24:01,936 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 234 flow [2024-11-10 22:24:01,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 22:24:01,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:01,937 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:01,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:24:01,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:24:01,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:01,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1252277860, now seen corresponding path program 1 times [2024-11-10 22:24:01,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:01,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710997492] [2024-11-10 22:24:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:01,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:02,070 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 22:24:02,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:02,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710997492] [2024-11-10 22:24:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710997492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078218422] [2024-11-10 22:24:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:02,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:02,075 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 22:24:02,077 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 22:24:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:02,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:02,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:02,247 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 22:24:02,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:02,288 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 22:24:02,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078218422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:02,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:02,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 22:24:02,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693989653] [2024-11-10 22:24:02,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:02,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 22:24:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 22:24:02,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:24:02,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:24:02,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 22:24:02,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:02,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:24:02,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:03,323 INFO L124 PetriNetUnfolderBase]: 5998/11048 cut-off events. [2024-11-10 22:24:03,324 INFO L125 PetriNetUnfolderBase]: For 7101/7101 co-relation queries the response was YES. [2024-11-10 22:24:03,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27218 conditions, 11048 events. 5998/11048 cut-off events. For 7101/7101 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 84022 event pairs, 211 based on Foata normal form. 362/10213 useless extension candidates. Maximal degree in co-relation 24757. Up to 2827 conditions per place. [2024-11-10 22:24:03,402 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 93 selfloop transitions, 40 changer transitions 0/152 dead transitions. [2024-11-10 22:24:03,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 152 transitions, 833 flow [2024-11-10 22:24:03,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:24:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:24:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 269 transitions. [2024-11-10 22:24:03,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7250673854447439 [2024-11-10 22:24:03,405 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 234 flow. Second operand 7 states and 269 transitions. [2024-11-10 22:24:03,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 152 transitions, 833 flow [2024-11-10 22:24:03,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 152 transitions, 827 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:03,414 INFO L231 Difference]: Finished difference. Result has 63 places, 95 transitions, 628 flow [2024-11-10 22:24:03,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=628, PETRI_PLACES=63, PETRI_TRANSITIONS=95} [2024-11-10 22:24:03,416 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-11-10 22:24:03,416 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 95 transitions, 628 flow [2024-11-10 22:24:03,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 22:24:03,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:03,417 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:03,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:24:03,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:03,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:24:03,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:03,621 INFO L85 PathProgramCache]: Analyzing trace with hash -930101917, now seen corresponding path program 1 times [2024-11-10 22:24:03,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:03,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516739818] [2024-11-10 22:24:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:03,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516739818] [2024-11-10 22:24:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516739818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:03,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:03,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:24:03,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637732043] [2024-11-10 22:24:03,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:03,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:03,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:03,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:03,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:03,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-10 22:24:03,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 95 transitions, 628 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:03,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:03,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-10 22:24:03,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:05,141 INFO L124 PetriNetUnfolderBase]: 8005/13073 cut-off events. [2024-11-10 22:24:05,142 INFO L125 PetriNetUnfolderBase]: For 31673/31721 co-relation queries the response was YES. [2024-11-10 22:24:05,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41388 conditions, 13073 events. 8005/13073 cut-off events. For 31673/31721 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 94935 event pairs, 2330 based on Foata normal form. 0/11639 useless extension candidates. Maximal degree in co-relation 19643. Up to 5612 conditions per place. [2024-11-10 22:24:05,232 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 108 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2024-11-10 22:24:05,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 127 transitions, 1075 flow [2024-11-10 22:24:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-10 22:24:05,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-10 22:24:05,234 INFO L175 Difference]: Start difference. First operand has 63 places, 95 transitions, 628 flow. Second operand 3 states and 99 transitions. [2024-11-10 22:24:05,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 127 transitions, 1075 flow [2024-11-10 22:24:05,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 127 transitions, 1063 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-10 22:24:05,383 INFO L231 Difference]: Finished difference. Result has 67 places, 92 transitions, 601 flow [2024-11-10 22:24:05,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=601, PETRI_PLACES=67, PETRI_TRANSITIONS=92} [2024-11-10 22:24:05,385 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-11-10 22:24:05,386 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 92 transitions, 601 flow [2024-11-10 22:24:05,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:05,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:05,386 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:05,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:24:05,386 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:24:05,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:05,387 INFO L85 PathProgramCache]: Analyzing trace with hash 970071163, now seen corresponding path program 1 times [2024-11-10 22:24:05,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:05,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216925322] [2024-11-10 22:24:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:05,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:24:05,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:05,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216925322] [2024-11-10 22:24:05,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216925322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:05,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115906871] [2024-11-10 22:24:05,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:05,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:05,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:05,503 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 22:24:05,505 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 22:24:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:05,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:24:05,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:24:05,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:24:05,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115906871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:05,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:24:05,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-10 22:24:05,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20391193] [2024-11-10 22:24:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:05,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:05,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:24:05,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:24:05,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 92 transitions, 601 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 22:24:05,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:05,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:24:05,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:06,372 INFO L124 PetriNetUnfolderBase]: 4408/7393 cut-off events. [2024-11-10 22:24:06,373 INFO L125 PetriNetUnfolderBase]: For 27725/27725 co-relation queries the response was YES. [2024-11-10 22:24:06,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24328 conditions, 7393 events. 4408/7393 cut-off events. For 27725/27725 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 53707 event pairs, 2357 based on Foata normal form. 491/6798 useless extension candidates. Maximal degree in co-relation 13152. Up to 5986 conditions per place. [2024-11-10 22:24:06,434 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 56 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2024-11-10 22:24:06,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 613 flow [2024-11-10 22:24:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-10 22:24:06,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5534591194968553 [2024-11-10 22:24:06,437 INFO L175 Difference]: Start difference. First operand has 67 places, 92 transitions, 601 flow. Second operand 3 states and 88 transitions. [2024-11-10 22:24:06,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 613 flow [2024-11-10 22:24:06,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 607 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:06,460 INFO L231 Difference]: Finished difference. Result has 65 places, 80 transitions, 495 flow [2024-11-10 22:24:06,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=65, PETRI_TRANSITIONS=80} [2024-11-10 22:24:06,463 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-11-10 22:24:06,463 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 80 transitions, 495 flow [2024-11-10 22:24:06,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 22:24:06,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:06,464 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:06,482 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 22:24:06,665 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,SelfDestructingSolverStorable5 [2024-11-10 22:24:06,665 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:24:06,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:06,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1187212229, now seen corresponding path program 1 times [2024-11-10 22:24:06,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:06,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506727857] [2024-11-10 22:24:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:06,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:06,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506727857] [2024-11-10 22:24:06,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506727857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:06,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823777117] [2024-11-10 22:24:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:06,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:06,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:06,815 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 22:24:06,816 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 22:24:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:06,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:24:06,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:06,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:07,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823777117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:07,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:07,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 22:24:07,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219127252] [2024-11-10 22:24:07,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:07,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:24:07,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:07,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:24:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:24:07,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:24:07,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 80 transitions, 495 flow. Second operand has 11 states, 11 states have (on average 22.09090909090909) internal successors, (243), 11 states have internal predecessors, (243), 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 22:24:07,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:07,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:24:07,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:09,543 INFO L124 PetriNetUnfolderBase]: 13528/28500 cut-off events. [2024-11-10 22:24:09,544 INFO L125 PetriNetUnfolderBase]: For 96922/96922 co-relation queries the response was YES. [2024-11-10 22:24:09,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78390 conditions, 28500 events. 13528/28500 cut-off events. For 96922/96922 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 274279 event pairs, 198 based on Foata normal form. 3061/28262 useless extension candidates. Maximal degree in co-relation 78354. Up to 4634 conditions per place. [2024-11-10 22:24:09,757 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 145 selfloop transitions, 105 changer transitions 0/271 dead transitions. [2024-11-10 22:24:09,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 271 transitions, 2012 flow [2024-11-10 22:24:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 22:24:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 22:24:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 418 transitions. [2024-11-10 22:24:09,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-10 22:24:09,759 INFO L175 Difference]: Start difference. First operand has 65 places, 80 transitions, 495 flow. Second operand 11 states and 418 transitions. [2024-11-10 22:24:09,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 271 transitions, 2012 flow [2024-11-10 22:24:10,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 271 transitions, 1986 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:10,157 INFO L231 Difference]: Finished difference. Result has 81 places, 166 transitions, 1677 flow [2024-11-10 22:24:10,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1677, PETRI_PLACES=81, PETRI_TRANSITIONS=166} [2024-11-10 22:24:10,157 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 30 predicate places. [2024-11-10 22:24:10,158 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 166 transitions, 1677 flow [2024-11-10 22:24:10,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.09090909090909) internal successors, (243), 11 states have internal predecessors, (243), 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 22:24:10,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:10,158 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:10,174 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 22:24:10,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:10,359 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:24:10,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:10,360 INFO L85 PathProgramCache]: Analyzing trace with hash 634032328, now seen corresponding path program 1 times [2024-11-10 22:24:10,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:10,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55027080] [2024-11-10 22:24:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:10,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:10,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:10,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55027080] [2024-11-10 22:24:10,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55027080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:10,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366564957] [2024-11-10 22:24:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:10,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:10,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:10,460 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 22:24:10,461 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 22:24:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:10,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:24:10,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:10,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:10,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366564957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:10,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:10,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 22:24:10,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802786812] [2024-11-10 22:24:10,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:10,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:24:10,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:10,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:24:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:24:10,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:24:10,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 166 transitions, 1677 flow. Second operand has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 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 22:24:10,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:10,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:24:10,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:22,014 INFO L124 PetriNetUnfolderBase]: 51732/109835 cut-off events. [2024-11-10 22:24:22,014 INFO L125 PetriNetUnfolderBase]: For 752265/752265 co-relation queries the response was YES. [2024-11-10 22:24:22,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374214 conditions, 109835 events. 51732/109835 cut-off events. For 752265/752265 co-relation queries the response was YES. Maximal size of possible extension queue 2870. Compared 1242528 event pairs, 2555 based on Foata normal form. 8734/104915 useless extension candidates. Maximal degree in co-relation 272934. Up to 16129 conditions per place. [2024-11-10 22:24:23,001 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 216 selfloop transitions, 381 changer transitions 0/618 dead transitions. [2024-11-10 22:24:23,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 618 transitions, 7505 flow [2024-11-10 22:24:23,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 22:24:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 22:24:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 406 transitions. [2024-11-10 22:24:23,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6383647798742138 [2024-11-10 22:24:23,004 INFO L175 Difference]: Start difference. First operand has 81 places, 166 transitions, 1677 flow. Second operand 12 states and 406 transitions. [2024-11-10 22:24:23,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 618 transitions, 7505 flow [2024-11-10 22:24:28,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 618 transitions, 7116 flow, removed 192 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:28,090 INFO L231 Difference]: Finished difference. Result has 98 places, 534 transitions, 7537 flow [2024-11-10 22:24:28,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7537, PETRI_PLACES=98, PETRI_TRANSITIONS=534} [2024-11-10 22:24:28,091 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2024-11-10 22:24:28,092 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 534 transitions, 7537 flow [2024-11-10 22:24:28,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 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 22:24:28,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:28,092 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:28,109 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 22:24:28,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:28,297 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:24:28,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:28,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1456354000, now seen corresponding path program 1 times [2024-11-10 22:24:28,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:28,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902031578] [2024-11-10 22:24:28,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:24:28,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902031578] [2024-11-10 22:24:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902031578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277609117] [2024-11-10 22:24:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:28,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:28,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:28,403 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 22:24:28,404 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 22:24:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:28,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:24:28,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:28,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:24:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277609117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:28,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:28,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2024-11-10 22:24:28,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040127001] [2024-11-10 22:24:28,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:28,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:24:28,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:24:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:24:28,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:24:28,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 534 transitions, 7537 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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 22:24:28,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:28,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:24:28,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand