./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/clever.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:24:14,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:24:14,258 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:24:14,264 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:24:14,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:24:14,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:24:14,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:24:14,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:24:14,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:24:14,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:24:14,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:24:14,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:24:14,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:24:14,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:24:14,297 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:24:14,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:24:14,300 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:24:14,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:24:14,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:24:14,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:24:14,301 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:24:14,302 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:24:14,302 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:24:14,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:24:14,302 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:24:14,302 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:24:14,303 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:24:14,303 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:24:14,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:24:14,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:24:14,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:24:14,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:24:14,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:24:14,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:24:14,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:24:14,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:24:14,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:24:14,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:24:14,305 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:24:14,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:24:14,306 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:24:14,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:24:14,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2024-11-12 16:24:14,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:24:14,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:24:14,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:24:14,613 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:24:14,613 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:24:14,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/clever.wvr.c [2024-11-12 16:24:16,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:24:16,231 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:24:16,232 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c [2024-11-12 16:24:16,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16207e62d/310c2cabf07144209e5047fb29a0d0d3/FLAG51c1c9a8e [2024-11-12 16:24:16,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16207e62d/310c2cabf07144209e5047fb29a0d0d3 [2024-11-12 16:24:16,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:24:16,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:24:16,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:24:16,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:24:16,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:24:16,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226413fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16, skipping insertion in model container [2024-11-12 16:24:16,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,290 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:24:16,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:24:16,523 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:24:16,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:24:16,564 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:24:16,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16 WrapperNode [2024-11-12 16:24:16,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:24:16,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:24:16,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:24:16,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:24:16,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,605 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2024-11-12 16:24:16,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:24:16,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:24:16,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:24:16,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:24:16,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,641 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]. [2024-11-12 16:24:16,641 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,642 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:24:16,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:24:16,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:24:16,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:24:16,660 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (1/1) ... [2024-11-12 16:24:16,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:24:16,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:16,693 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) [2024-11-12 16:24:16,697 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 [2024-11-12 16:24:16,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:24:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 16:24:16,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 16:24:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 16:24:16,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 16:24:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:24:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:24:16,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:24:16,736 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:24:16,824 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:24:16,826 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:24:17,025 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:24:17,025 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:24:17,220 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:24:17,220 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 16:24:17,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:24:17 BoogieIcfgContainer [2024-11-12 16:24:17,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:24:17,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:24:17,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:24:17,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:24:17,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:24:16" (1/3) ... [2024-11-12 16:24:17,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f861308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:24:17, skipping insertion in model container [2024-11-12 16:24:17,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:16" (2/3) ... [2024-11-12 16:24:17,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f861308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:24:17, skipping insertion in model container [2024-11-12 16:24:17,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:24:17" (3/3) ... [2024-11-12 16:24:17,229 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2024-11-12 16:24:17,246 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:24:17,247 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:24:17,247 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:24:17,282 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 16:24:17,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 58 flow [2024-11-12 16:24:17,348 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-12 16:24:17,349 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:24:17,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 3/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2024-11-12 16:24:17,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 22 transitions, 58 flow [2024-11-12 16:24:17,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 50 flow [2024-11-12 16:24:17,372 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:24:17,381 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=None, 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;@435629b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:24:17,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 16:24:17,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:24:17,391 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-11-12 16:24:17,391 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:24:17,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:17,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:17,393 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:17,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash -806847430, now seen corresponding path program 1 times [2024-11-12 16:24:17,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:17,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077698284] [2024-11-12 16:24:17,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:17,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077698284] [2024-11-12 16:24:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077698284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:24:17,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:24:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:24:17,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439713387] [2024-11-12 16:24:17,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:24:17,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:24:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:24:17,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:24:17,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:17,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-12 16:24:17,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:17,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:17,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:18,011 INFO L124 PetriNetUnfolderBase]: 106/171 cut-off events. [2024-11-12 16:24:18,011 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-12 16:24:18,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 171 events. 106/171 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 510 event pairs, 19 based on Foata normal form. 2/107 useless extension candidates. Maximal degree in co-relation 318. Up to 110 conditions per place. [2024-11-12 16:24:18,016 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 21 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2024-11-12 16:24:18,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 127 flow [2024-11-12 16:24:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:24:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:24:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-11-12 16:24:18,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-12 16:24:18,029 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 50 flow. Second operand 3 states and 45 transitions. [2024-11-12 16:24:18,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 127 flow [2024-11-12 16:24:18,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 16:24:18,034 INFO L231 Difference]: Finished difference. Result has 20 places, 19 transitions, 57 flow [2024-11-12 16:24:18,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=20, PETRI_TRANSITIONS=19} [2024-11-12 16:24:18,038 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-11-12 16:24:18,039 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 19 transitions, 57 flow [2024-11-12 16:24:18,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-12 16:24:18,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:18,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:18,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:24:18,040 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:18,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:18,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1928839812, now seen corresponding path program 1 times [2024-11-12 16:24:18,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:18,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885031226] [2024-11-12 16:24:18,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:18,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:18,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885031226] [2024-11-12 16:24:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885031226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:24:18,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:24:18,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:24:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754528567] [2024-11-12 16:24:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:24:18,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:24:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:18,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:24:18,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:24:18,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:18,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-12 16:24:18,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:18,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:18,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:18,272 INFO L124 PetriNetUnfolderBase]: 145/242 cut-off events. [2024-11-12 16:24:18,272 INFO L125 PetriNetUnfolderBase]: For 52/56 co-relation queries the response was YES. [2024-11-12 16:24:18,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 242 events. 145/242 cut-off events. For 52/56 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 807 event pairs, 12 based on Foata normal form. 7/220 useless extension candidates. Maximal degree in co-relation 172. Up to 96 conditions per place. [2024-11-12 16:24:18,276 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 37 selfloop transitions, 7 changer transitions 2/49 dead transitions. [2024-11-12 16:24:18,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 49 transitions, 236 flow [2024-11-12 16:24:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:24:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:24:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-12 16:24:18,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-12 16:24:18,279 INFO L175 Difference]: Start difference. First operand has 20 places, 19 transitions, 57 flow. Second operand 5 states and 71 transitions. [2024-11-12 16:24:18,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 49 transitions, 236 flow [2024-11-12 16:24:18,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 49 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:24:18,300 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 105 flow [2024-11-12 16:24:18,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-11-12 16:24:18,301 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2024-11-12 16:24:18,301 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 105 flow [2024-11-12 16:24:18,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-12 16:24:18,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:18,302 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:18,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:24:18,304 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:18,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:18,309 INFO L85 PathProgramCache]: Analyzing trace with hash -69603818, now seen corresponding path program 2 times [2024-11-12 16:24:18,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:18,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525528424] [2024-11-12 16:24:18,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:18,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:18,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:18,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525528424] [2024-11-12 16:24:18,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525528424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:18,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138044689] [2024-11-12 16:24:18,422 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:24:18,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:18,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:18,425 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) [2024-11-12 16:24:18,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:24:18,496 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:18,496 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:18,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 16:24:18,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:18,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:18,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138044689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:18,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:18,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-12 16:24:18,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549574498] [2024-11-12 16:24:18,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:18,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 16:24:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 16:24:18,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 16:24:18,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:18,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-12 16:24:18,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:18,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:18,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:18,803 INFO L124 PetriNetUnfolderBase]: 145/239 cut-off events. [2024-11-12 16:24:18,803 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-12 16:24:18,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 239 events. 145/239 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 783 event pairs, 15 based on Foata normal form. 8/244 useless extension candidates. Maximal degree in co-relation 306. Up to 105 conditions per place. [2024-11-12 16:24:18,808 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 35 selfloop transitions, 15 changer transitions 5/58 dead transitions. [2024-11-12 16:24:18,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 58 transitions, 348 flow [2024-11-12 16:24:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 16:24:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 16:24:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-12 16:24:18,810 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.564935064935065 [2024-11-12 16:24:18,810 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 105 flow. Second operand 7 states and 87 transitions. [2024-11-12 16:24:18,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 58 transitions, 348 flow [2024-11-12 16:24:18,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 58 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:24:18,815 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 211 flow [2024-11-12 16:24:18,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-12 16:24:18,816 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 13 predicate places. [2024-11-12 16:24:18,816 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 211 flow [2024-11-12 16:24:18,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-12 16:24:18,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:18,817 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:18,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 16:24:19,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:19,018 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:19,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:19,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1906479384, now seen corresponding path program 1 times [2024-11-12 16:24:19,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:19,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645924276] [2024-11-12 16:24:19,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:19,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:19,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:19,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645924276] [2024-11-12 16:24:19,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645924276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:19,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007909790] [2024-11-12 16:24:19,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:19,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:19,094 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) [2024-11-12 16:24:19,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:24:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:19,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 16:24:19,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:19,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:19,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007909790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:19,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:19,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-12 16:24:19,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145330258] [2024-11-12 16:24:19,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:19,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 16:24:19,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 16:24:19,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 16:24:19,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:19,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-12 16:24:19,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:19,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:19,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:19,366 INFO L124 PetriNetUnfolderBase]: 127/223 cut-off events. [2024-11-12 16:24:19,367 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2024-11-12 16:24:19,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 223 events. 127/223 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 688 event pairs, 2 based on Foata normal form. 14/235 useless extension candidates. Maximal degree in co-relation 543. Up to 91 conditions per place. [2024-11-12 16:24:19,370 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 41 selfloop transitions, 9 changer transitions 3/56 dead transitions. [2024-11-12 16:24:19,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 423 flow [2024-11-12 16:24:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:24:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:24:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-12 16:24:19,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6272727272727273 [2024-11-12 16:24:19,372 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 211 flow. Second operand 5 states and 69 transitions. [2024-11-12 16:24:19,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 423 flow [2024-11-12 16:24:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 411 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-12 16:24:19,378 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 237 flow [2024-11-12 16:24:19,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-11-12 16:24:19,379 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 18 predicate places. [2024-11-12 16:24:19,379 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 237 flow [2024-11-12 16:24:19,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-12 16:24:19,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:19,380 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:19,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 16:24:19,580 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,SelfDestructingSolverStorable3 [2024-11-12 16:24:19,581 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:19,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:19,582 INFO L85 PathProgramCache]: Analyzing trace with hash -68859, now seen corresponding path program 1 times [2024-11-12 16:24:19,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:19,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008679783] [2024-11-12 16:24:19,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:19,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:19,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:19,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008679783] [2024-11-12 16:24:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008679783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:19,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465019954] [2024-11-12 16:24:19,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:19,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:19,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:19,889 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) [2024-11-12 16:24:19,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 16:24:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:19,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 16:24:19,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:20,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:20,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465019954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:20,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:20,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-12 16:24:20,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522089606] [2024-11-12 16:24:20,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:20,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 16:24:20,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:20,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 16:24:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-12 16:24:20,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:20,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 237 flow. Second operand has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:24:20,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:20,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:20,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:20,592 INFO L124 PetriNetUnfolderBase]: 261/447 cut-off events. [2024-11-12 16:24:20,592 INFO L125 PetriNetUnfolderBase]: For 841/841 co-relation queries the response was YES. [2024-11-12 16:24:20,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 447 events. 261/447 cut-off events. For 841/841 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1693 event pairs, 10 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 1015. Up to 188 conditions per place. [2024-11-12 16:24:20,597 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 74 selfloop transitions, 23 changer transitions 7/107 dead transitions. [2024-11-12 16:24:20,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 107 transitions, 885 flow [2024-11-12 16:24:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 16:24:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 16:24:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-11-12 16:24:20,599 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-12 16:24:20,600 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 237 flow. Second operand 9 states and 128 transitions. [2024-11-12 16:24:20,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 107 transitions, 885 flow [2024-11-12 16:24:20,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 107 transitions, 853 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-12 16:24:20,608 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 463 flow [2024-11-12 16:24:20,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=463, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2024-11-12 16:24:20,610 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 27 predicate places. [2024-11-12 16:24:20,611 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 463 flow [2024-11-12 16:24:20,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:24:20,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:20,611 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:20,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 16:24:20,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:20,812 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:20,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2024145486, now seen corresponding path program 2 times [2024-11-12 16:24:20,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:20,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23188931] [2024-11-12 16:24:20,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:20,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:20,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:20,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23188931] [2024-11-12 16:24:20,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23188931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:24:20,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:24:20,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:24:20,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465586787] [2024-11-12 16:24:20,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:24:20,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:24:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:24:20,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:24:20,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:20,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-12 16:24:20,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:20,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:20,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:20,983 INFO L124 PetriNetUnfolderBase]: 247/423 cut-off events. [2024-11-12 16:24:20,983 INFO L125 PetriNetUnfolderBase]: For 1313/1345 co-relation queries the response was YES. [2024-11-12 16:24:20,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1922 conditions, 423 events. 247/423 cut-off events. For 1313/1345 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1551 event pairs, 33 based on Foata normal form. 8/428 useless extension candidates. Maximal degree in co-relation 1798. Up to 185 conditions per place. [2024-11-12 16:24:20,987 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 57 selfloop transitions, 13 changer transitions 5/78 dead transitions. [2024-11-12 16:24:20,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 786 flow [2024-11-12 16:24:20,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:24:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:24:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-12 16:24:20,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-12 16:24:20,989 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 463 flow. Second operand 5 states and 64 transitions. [2024-11-12 16:24:20,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 786 flow [2024-11-12 16:24:20,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 731 flow, removed 26 selfloop flow, removed 1 redundant places. [2024-11-12 16:24:20,997 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 504 flow [2024-11-12 16:24:20,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-11-12 16:24:20,999 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 33 predicate places. [2024-11-12 16:24:21,000 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 504 flow [2024-11-12 16:24:21,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-12 16:24:21,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:21,000 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:21,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 16:24:21,001 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:21,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash 784943093, now seen corresponding path program 2 times [2024-11-12 16:24:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:21,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920363829] [2024-11-12 16:24:21,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:21,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:21,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920363829] [2024-11-12 16:24:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920363829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:21,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364969131] [2024-11-12 16:24:21,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:24:21,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:21,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:21,269 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) [2024-11-12 16:24:21,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 16:24:21,324 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:21,324 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:21,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 16:24:21,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:21,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364969131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:25,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-12 16:24:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262989643] [2024-11-12 16:24:25,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:25,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 16:24:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:25,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 16:24:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=102, Unknown=1, NotChecked=0, Total=156 [2024-11-12 16:24:25,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:25,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 504 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-11-12 16:24:25,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:25,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:25,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:26,595 INFO L124 PetriNetUnfolderBase]: 729/1242 cut-off events. [2024-11-12 16:24:26,595 INFO L125 PetriNetUnfolderBase]: For 4887/4887 co-relation queries the response was YES. [2024-11-12 16:24:26,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 1242 events. 729/1242 cut-off events. For 4887/4887 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6029 event pairs, 55 based on Foata normal form. 8/1249 useless extension candidates. Maximal degree in co-relation 5129. Up to 357 conditions per place. [2024-11-12 16:24:26,609 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 146 selfloop transitions, 96 changer transitions 12/257 dead transitions. [2024-11-12 16:24:26,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 257 transitions, 2608 flow [2024-11-12 16:24:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 16:24:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 16:24:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 249 transitions. [2024-11-12 16:24:26,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6657754010695187 [2024-11-12 16:24:26,612 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 504 flow. Second operand 17 states and 249 transitions. [2024-11-12 16:24:26,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 257 transitions, 2608 flow [2024-11-12 16:24:26,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 257 transitions, 2496 flow, removed 44 selfloop flow, removed 1 redundant places. [2024-11-12 16:24:26,632 INFO L231 Difference]: Finished difference. Result has 82 places, 147 transitions, 1769 flow [2024-11-12 16:24:26,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1769, PETRI_PLACES=82, PETRI_TRANSITIONS=147} [2024-11-12 16:24:26,633 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 59 predicate places. [2024-11-12 16:24:26,635 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 147 transitions, 1769 flow [2024-11-12 16:24:26,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-11-12 16:24:26,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:26,635 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:26,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 16:24:26,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:26,836 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:26,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:26,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1359636455, now seen corresponding path program 3 times [2024-11-12 16:24:26,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:26,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140433797] [2024-11-12 16:24:26,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:26,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:27,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:27,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140433797] [2024-11-12 16:24:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140433797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324288542] [2024-11-12 16:24:27,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:24:27,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:27,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:27,133 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) [2024-11-12 16:24:27,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 16:24:27,191 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:24:27,191 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:27,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 16:24:27,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:27,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:27,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324288542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:27,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:27,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-12 16:24:27,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247512040] [2024-11-12 16:24:27,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:27,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 16:24:27,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:27,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 16:24:27,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-12 16:24:27,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:27,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 147 transitions, 1769 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-11-12 16:24:27,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:27,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:27,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:28,329 INFO L124 PetriNetUnfolderBase]: 1487/2540 cut-off events. [2024-11-12 16:24:28,329 INFO L125 PetriNetUnfolderBase]: For 12984/12984 co-relation queries the response was YES. [2024-11-12 16:24:28,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13827 conditions, 2540 events. 1487/2540 cut-off events. For 12984/12984 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14219 event pairs, 122 based on Foata normal form. 7/2546 useless extension candidates. Maximal degree in co-relation 11853. Up to 763 conditions per place. [2024-11-12 16:24:28,352 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 189 selfloop transitions, 164 changer transitions 12/368 dead transitions. [2024-11-12 16:24:28,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 368 transitions, 4866 flow [2024-11-12 16:24:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 16:24:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 16:24:28,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-11-12 16:24:28,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6528925619834711 [2024-11-12 16:24:28,354 INFO L175 Difference]: Start difference. First operand has 82 places, 147 transitions, 1769 flow. Second operand 11 states and 158 transitions. [2024-11-12 16:24:28,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 368 transitions, 4866 flow [2024-11-12 16:24:28,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 368 transitions, 4509 flow, removed 175 selfloop flow, removed 2 redundant places. [2024-11-12 16:24:28,403 INFO L231 Difference]: Finished difference. Result has 95 places, 258 transitions, 3618 flow [2024-11-12 16:24:28,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3618, PETRI_PLACES=95, PETRI_TRANSITIONS=258} [2024-11-12 16:24:28,404 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 72 predicate places. [2024-11-12 16:24:28,405 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 258 transitions, 3618 flow [2024-11-12 16:24:28,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-11-12 16:24:28,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:28,406 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:28,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 16:24:28,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:28,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:28,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:28,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2018638863, now seen corresponding path program 1 times [2024-11-12 16:24:28,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:28,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33852514] [2024-11-12 16:24:28,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:28,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:29,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:29,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33852514] [2024-11-12 16:24:29,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33852514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:29,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631504897] [2024-11-12 16:24:29,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:29,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:29,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:29,064 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:29,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 16:24:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:29,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-12 16:24:29,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:29,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:30,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631504897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:30,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:30,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-12 16:24:30,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671397596] [2024-11-12 16:24:30,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:30,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 16:24:30,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:30,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 16:24:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-12 16:24:30,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:30,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 258 transitions, 3618 flow. Second operand has 19 states, 19 states have (on average 8.157894736842104) internal successors, (155), 19 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) [2024-11-12 16:24:30,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:30,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:30,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:31,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:24:41,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:24:45,172 INFO L124 PetriNetUnfolderBase]: 3044/5117 cut-off events. [2024-11-12 16:24:45,172 INFO L125 PetriNetUnfolderBase]: For 34676/34676 co-relation queries the response was YES. [2024-11-12 16:24:45,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30614 conditions, 5117 events. 3044/5117 cut-off events. For 34676/34676 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 30810 event pairs, 241 based on Foata normal form. 28/5144 useless extension candidates. Maximal degree in co-relation 27991. Up to 1663 conditions per place. [2024-11-12 16:24:45,216 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 300 selfloop transitions, 513 changer transitions 11/827 dead transitions. [2024-11-12 16:24:45,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 827 transitions, 12053 flow [2024-11-12 16:24:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-12 16:24:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-12 16:24:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 456 transitions. [2024-11-12 16:24:45,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6096256684491979 [2024-11-12 16:24:45,219 INFO L175 Difference]: Start difference. First operand has 95 places, 258 transitions, 3618 flow. Second operand 34 states and 456 transitions. [2024-11-12 16:24:45,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 827 transitions, 12053 flow [2024-11-12 16:24:45,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 827 transitions, 11840 flow, removed 91 selfloop flow, removed 7 redundant places. [2024-11-12 16:24:45,321 INFO L231 Difference]: Finished difference. Result has 128 places, 655 transitions, 10852 flow [2024-11-12 16:24:45,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3524, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=10852, PETRI_PLACES=128, PETRI_TRANSITIONS=655} [2024-11-12 16:24:45,325 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 105 predicate places. [2024-11-12 16:24:45,325 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 655 transitions, 10852 flow [2024-11-12 16:24:45,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.157894736842104) internal successors, (155), 19 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) [2024-11-12 16:24:45,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:45,325 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:45,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 16:24:45,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:45,526 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:45,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:45,527 INFO L85 PathProgramCache]: Analyzing trace with hash 178571131, now seen corresponding path program 2 times [2024-11-12 16:24:45,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:45,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603782994] [2024-11-12 16:24:45,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:45,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:45,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603782994] [2024-11-12 16:24:45,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603782994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790610627] [2024-11-12 16:24:45,830 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:24:45,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:45,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:45,833 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:45,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 16:24:46,042 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:46,042 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:46,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 16:24:46,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:46,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790610627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:46,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:46,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 14 [2024-11-12 16:24:46,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251277899] [2024-11-12 16:24:46,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:46,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 16:24:46,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:46,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 16:24:46,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-12 16:24:46,485 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:46,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 655 transitions, 10852 flow. Second operand has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 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) [2024-11-12 16:24:46,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:46,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:46,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:48,641 INFO L124 PetriNetUnfolderBase]: 4487/7628 cut-off events. [2024-11-12 16:24:48,642 INFO L125 PetriNetUnfolderBase]: For 62117/62117 co-relation queries the response was YES. [2024-11-12 16:24:48,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49882 conditions, 7628 events. 4487/7628 cut-off events. For 62117/62117 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 50957 event pairs, 403 based on Foata normal form. 9/7636 useless extension candidates. Maximal degree in co-relation 46772. Up to 4970 conditions per place. [2024-11-12 16:24:48,700 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 772 selfloop transitions, 342 changer transitions 8/1125 dead transitions. [2024-11-12 16:24:48,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 1125 transitions, 19951 flow [2024-11-12 16:24:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 16:24:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 16:24:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 264 transitions. [2024-11-12 16:24:48,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-12 16:24:48,702 INFO L175 Difference]: Start difference. First operand has 128 places, 655 transitions, 10852 flow. Second operand 18 states and 264 transitions. [2024-11-12 16:24:48,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 1125 transitions, 19951 flow [2024-11-12 16:24:49,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 1125 transitions, 17778 flow, removed 1063 selfloop flow, removed 5 redundant places. [2024-11-12 16:24:49,064 INFO L231 Difference]: Finished difference. Result has 154 places, 940 transitions, 15494 flow [2024-11-12 16:24:49,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=9607, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15494, PETRI_PLACES=154, PETRI_TRANSITIONS=940} [2024-11-12 16:24:49,065 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 131 predicate places. [2024-11-12 16:24:49,065 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 940 transitions, 15494 flow [2024-11-12 16:24:49,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 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) [2024-11-12 16:24:49,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:49,066 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:49,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 16:24:49,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:49,267 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:49,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash -317638350, now seen corresponding path program 3 times [2024-11-12 16:24:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890493738] [2024-11-12 16:24:49,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:49,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:49,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:49,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890493738] [2024-11-12 16:24:49,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890493738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:49,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582138163] [2024-11-12 16:24:49,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:24:49,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:49,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:49,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:49,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 16:24:49,396 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:24:49,396 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:49,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 16:24:49,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:49,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:49,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582138163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:49,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:49,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-12 16:24:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556903194] [2024-11-12 16:24:49,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:49,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:24:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:24:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:24:49,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:49,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 940 transitions, 15494 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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) [2024-11-12 16:24:49,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:49,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:49,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:52,196 INFO L124 PetriNetUnfolderBase]: 6333/10992 cut-off events. [2024-11-12 16:24:52,196 INFO L125 PetriNetUnfolderBase]: For 101683/101699 co-relation queries the response was YES. [2024-11-12 16:24:52,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70369 conditions, 10992 events. 6333/10992 cut-off events. For 101683/101699 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 81287 event pairs, 91 based on Foata normal form. 88/11078 useless extension candidates. Maximal degree in co-relation 66395. Up to 3693 conditions per place. [2024-11-12 16:24:52,289 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 1275 selfloop transitions, 473 changer transitions 9/1760 dead transitions. [2024-11-12 16:24:52,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 1760 transitions, 30347 flow [2024-11-12 16:24:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 16:24:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 16:24:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-11-12 16:24:52,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-12 16:24:52,291 INFO L175 Difference]: Start difference. First operand has 154 places, 940 transitions, 15494 flow. Second operand 12 states and 154 transitions. [2024-11-12 16:24:52,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 1760 transitions, 30347 flow [2024-11-12 16:24:52,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1760 transitions, 29936 flow, removed 200 selfloop flow, removed 2 redundant places. [2024-11-12 16:24:52,872 INFO L231 Difference]: Finished difference. Result has 172 places, 1242 transitions, 22513 flow [2024-11-12 16:24:52,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=15222, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=22513, PETRI_PLACES=172, PETRI_TRANSITIONS=1242} [2024-11-12 16:24:52,873 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 149 predicate places. [2024-11-12 16:24:52,874 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 1242 transitions, 22513 flow [2024-11-12 16:24:52,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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) [2024-11-12 16:24:52,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:52,874 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:52,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 16:24:53,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-12 16:24:53,078 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:53,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1669623216, now seen corresponding path program 4 times [2024-11-12 16:24:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:53,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421217934] [2024-11-12 16:24:53,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:53,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:53,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:53,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421217934] [2024-11-12 16:24:53,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421217934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:53,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414667216] [2024-11-12 16:24:53,144 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:24:53,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:53,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:53,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:53,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 16:24:53,200 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:24:53,200 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:53,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 16:24:53,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:53,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:53,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414667216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:53,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-11-12 16:24:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360937166] [2024-11-12 16:24:53,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:53,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 16:24:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 16:24:53,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-12 16:24:53,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:53,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 1242 transitions, 22513 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 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) [2024-11-12 16:24:53,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:53,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:53,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:57,451 INFO L124 PetriNetUnfolderBase]: 7234/13029 cut-off events. [2024-11-12 16:24:57,452 INFO L125 PetriNetUnfolderBase]: For 152239/152239 co-relation queries the response was YES. [2024-11-12 16:24:57,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91790 conditions, 13029 events. 7234/13029 cut-off events. For 152239/152239 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 104167 event pairs, 536 based on Foata normal form. 44/13072 useless extension candidates. Maximal degree in co-relation 91261. Up to 5098 conditions per place. [2024-11-12 16:24:57,566 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 928 selfloop transitions, 956 changer transitions 0/1887 dead transitions. [2024-11-12 16:24:57,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 1887 transitions, 36312 flow [2024-11-12 16:24:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 16:24:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 16:24:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 176 transitions. [2024-11-12 16:24:57,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-12 16:24:57,568 INFO L175 Difference]: Start difference. First operand has 172 places, 1242 transitions, 22513 flow. Second operand 14 states and 176 transitions. [2024-11-12 16:24:57,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 1887 transitions, 36312 flow [2024-11-12 16:24:59,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 1887 transitions, 35378 flow, removed 452 selfloop flow, removed 2 redundant places. [2024-11-12 16:24:59,049 INFO L231 Difference]: Finished difference. Result has 189 places, 1520 transitions, 29902 flow [2024-11-12 16:24:59,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=21615, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=682, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=29902, PETRI_PLACES=189, PETRI_TRANSITIONS=1520} [2024-11-12 16:24:59,050 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 166 predicate places. [2024-11-12 16:24:59,050 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 1520 transitions, 29902 flow [2024-11-12 16:24:59,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 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) [2024-11-12 16:24:59,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:59,051 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:59,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 16:24:59,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:59,251 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:59,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1097335117, now seen corresponding path program 5 times [2024-11-12 16:24:59,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:59,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993342113] [2024-11-12 16:24:59,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:59,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:59,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993342113] [2024-11-12 16:24:59,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993342113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052033240] [2024-11-12 16:24:59,488 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:24:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:59,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:59,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 16:24:59,564 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:59,564 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:59,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 16:24:59,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:59,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:24:59,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052033240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:59,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:59,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 14 [2024-11-12 16:24:59,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440427711] [2024-11-12 16:24:59,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:59,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 16:24:59,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:59,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 16:24:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-12 16:24:59,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:24:59,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 1520 transitions, 29902 flow. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 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) [2024-11-12 16:24:59,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:59,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:24:59,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:06,924 INFO L124 PetriNetUnfolderBase]: 9569/17355 cut-off events. [2024-11-12 16:25:06,924 INFO L125 PetriNetUnfolderBase]: For 254309/254309 co-relation queries the response was YES. [2024-11-12 16:25:07,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130360 conditions, 17355 events. 9569/17355 cut-off events. For 254309/254309 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 144260 event pairs, 777 based on Foata normal form. 60/17414 useless extension candidates. Maximal degree in co-relation 129726. Up to 7303 conditions per place. [2024-11-12 16:25:07,065 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 760 selfloop transitions, 1578 changer transitions 19/2360 dead transitions. [2024-11-12 16:25:07,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 2360 transitions, 50245 flow [2024-11-12 16:25:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 16:25:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 16:25:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 319 transitions. [2024-11-12 16:25:07,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-12 16:25:07,067 INFO L175 Difference]: Start difference. First operand has 189 places, 1520 transitions, 29902 flow. Second operand 24 states and 319 transitions. [2024-11-12 16:25:07,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 2360 transitions, 50245 flow [2024-11-12 16:25:09,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 2360 transitions, 49571 flow, removed 324 selfloop flow, removed 3 redundant places. [2024-11-12 16:25:09,939 INFO L231 Difference]: Finished difference. Result has 223 places, 2201 transitions, 50306 flow [2024-11-12 16:25:09,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=28038, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=923, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=50306, PETRI_PLACES=223, PETRI_TRANSITIONS=2201} [2024-11-12 16:25:09,941 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 200 predicate places. [2024-11-12 16:25:09,941 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 2201 transitions, 50306 flow [2024-11-12 16:25:09,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 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) [2024-11-12 16:25:09,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:09,941 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:09,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 16:25:10,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-12 16:25:10,142 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:10,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:10,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1400983790, now seen corresponding path program 6 times [2024-11-12 16:25:10,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:10,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552883090] [2024-11-12 16:25:10,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:10,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:25:10,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552883090] [2024-11-12 16:25:10,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552883090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:25:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952851181] [2024-11-12 16:25:10,198 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:25:10,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:25:10,200 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:25:10,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 16:25:10,257 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-12 16:25:10,257 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:25:10,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 16:25:10,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:25:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:25:10,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:25:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:25:10,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952851181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:25:10,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:25:10,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-12 16:25:10,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712157291] [2024-11-12 16:25:10,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:25:10,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:25:10,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:10,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:25:10,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:25:10,350 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:25:10,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 2201 transitions, 50306 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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) [2024-11-12 16:25:10,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:10,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:25:10,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:20,450 INFO L124 PetriNetUnfolderBase]: 11155/20051 cut-off events. [2024-11-12 16:25:20,450 INFO L125 PetriNetUnfolderBase]: For 356939/356939 co-relation queries the response was YES. [2024-11-12 16:25:20,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166583 conditions, 20051 events. 11155/20051 cut-off events. For 356939/356939 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 169770 event pairs, 763 based on Foata normal form. 154/20204 useless extension candidates. Maximal degree in co-relation 165924. Up to 8744 conditions per place. [2024-11-12 16:25:20,678 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 1419 selfloop transitions, 1587 changer transitions 0/3009 dead transitions. [2024-11-12 16:25:20,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 3009 transitions, 72225 flow [2024-11-12 16:25:20,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 16:25:20,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 16:25:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-11-12 16:25:20,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5746753246753247 [2024-11-12 16:25:20,680 INFO L175 Difference]: Start difference. First operand has 223 places, 2201 transitions, 50306 flow. Second operand 14 states and 177 transitions. [2024-11-12 16:25:20,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 3009 transitions, 72225 flow [2024-11-12 16:25:25,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 3009 transitions, 70719 flow, removed 739 selfloop flow, removed 5 redundant places. [2024-11-12 16:25:25,941 INFO L231 Difference]: Finished difference. Result has 239 places, 2571 transitions, 64887 flow [2024-11-12 16:25:25,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=49113, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=64887, PETRI_PLACES=239, PETRI_TRANSITIONS=2571} [2024-11-12 16:25:25,944 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 216 predicate places. [2024-11-12 16:25:25,944 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 2571 transitions, 64887 flow [2024-11-12 16:25:25,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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) [2024-11-12 16:25:25,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:25,944 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:25,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-12 16:25:26,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-12 16:25:26,145 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:26,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash -491053936, now seen corresponding path program 7 times [2024-11-12 16:25:26,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:26,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766146578] [2024-11-12 16:25:26,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:26,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:25:26,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:26,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766146578] [2024-11-12 16:25:26,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766146578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:25:26,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:25:26,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 16:25:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082226982] [2024-11-12 16:25:26,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:25:26,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:25:26,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:25:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:25:26,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:25:26,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 2571 transitions, 64887 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:25:26,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:26,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:25:26,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:38,383 INFO L124 PetriNetUnfolderBase]: 11290/20432 cut-off events. [2024-11-12 16:25:38,384 INFO L125 PetriNetUnfolderBase]: For 476382/476394 co-relation queries the response was YES. [2024-11-12 16:25:38,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186729 conditions, 20432 events. 11290/20432 cut-off events. For 476382/476394 co-relation queries the response was YES. Maximal size of possible extension queue 1338. Compared 176124 event pairs, 186 based on Foata normal form. 80/20510 useless extension candidates. Maximal degree in co-relation 186540. Up to 6779 conditions per place. [2024-11-12 16:25:38,598 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 2096 selfloop transitions, 949 changer transitions 0/3048 dead transitions. [2024-11-12 16:25:38,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 3048 transitions, 77749 flow [2024-11-12 16:25:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 16:25:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 16:25:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-12 16:25:38,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-12 16:25:38,600 INFO L175 Difference]: Start difference. First operand has 239 places, 2571 transitions, 64887 flow. Second operand 7 states and 91 transitions. [2024-11-12 16:25:38,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 3048 transitions, 77749 flow [2024-11-12 16:25:45,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 3048 transitions, 77489 flow, removed 121 selfloop flow, removed 2 redundant places. [2024-11-12 16:25:45,178 INFO L231 Difference]: Finished difference. Result has 247 places, 2612 transitions, 69152 flow [2024-11-12 16:25:45,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=63950, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=884, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=69152, PETRI_PLACES=247, PETRI_TRANSITIONS=2612} [2024-11-12 16:25:45,181 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 224 predicate places. [2024-11-12 16:25:45,181 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 2612 transitions, 69152 flow [2024-11-12 16:25:45,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:25:45,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:45,181 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:45,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 16:25:45,182 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:45,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash -720767963, now seen corresponding path program 8 times [2024-11-12 16:25:45,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:45,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548976646] [2024-11-12 16:25:45,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:45,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:45,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:45,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548976646] [2024-11-12 16:25:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548976646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:25:45,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985413010] [2024-11-12 16:25:45,384 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:25:45,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:45,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:25:45,386 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:25:45,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 16:25:45,449 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:25:45,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:25:45,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 16:25:45,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:25:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:45,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:25:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:45,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985413010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:25:45,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:25:45,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 16 [2024-11-12 16:25:45,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322125826] [2024-11-12 16:25:45,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:25:45,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-12 16:25:45,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-12 16:25:45,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-12 16:25:45,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-12 16:25:45,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 2612 transitions, 69152 flow. Second operand has 17 states, 17 states have (on average 8.117647058823529) internal successors, (138), 17 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:25:45,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:45,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-12 16:25:45,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand