./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/chl-collitem-subst.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 e60e484eb5ab810972130a1d83dccbab591b96ac9007b9b56059ed6674807329 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 10:06:44,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:06:44,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:06:44,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:06:44,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:06:44,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:06:44,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:06:44,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:06:44,362 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:06:44,362 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:06:44,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:06:44,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:06:44,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:06:44,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:06:44,362 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:06:44,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:06:44,362 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:06:44,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:06:44,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:06:44,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:06:44,363 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:06:44,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:06:44,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:06:44,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:06:44,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:06:44,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:06:44,364 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/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 -> e60e484eb5ab810972130a1d83dccbab591b96ac9007b9b56059ed6674807329 [2025-03-04 10:06:44,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:06:44,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:06:44,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:06:44,569 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:06:44,569 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:06:44,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c [2025-03-04 10:06:45,742 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/078a76821/b66f765b9d33408099b1d1de8c63ca2e/FLAG442704385 [2025-03-04 10:06:46,023 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:06:46,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c [2025-03-04 10:06:46,038 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/078a76821/b66f765b9d33408099b1d1de8c63ca2e/FLAG442704385 [2025-03-04 10:06:46,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/078a76821/b66f765b9d33408099b1d1de8c63ca2e [2025-03-04 10:06:46,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:06:46,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:06:46,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:06:46,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:06:46,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:06:46,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8cba8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46, skipping insertion in model container [2025-03-04 10:06:46,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:06:46,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:06:46,464 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:06:46,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:06:46,490 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:06:46,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46 WrapperNode [2025-03-04 10:06:46,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:06:46,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:06:46,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:06:46,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:06:46,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,521 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 19, calls inlined = 41, statements flattened = 351 [2025-03-04 10:06:46,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:06:46,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:06:46,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:06:46,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:06:46,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,533 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,547 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 10:06:46,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,552 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:06:46,559 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:06:46,559 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:06:46,559 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:06:46,560 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (1/1) ... [2025-03-04 10:06:46,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:06:46,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:06:46,588 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) [2025-03-04 10:06:46,591 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 [2025-03-04 10:06:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:06:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 10:06:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 10:06:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 10:06:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 10:06:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 10:06:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 10:06:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:06:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 10:06:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 10:06:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:06:46,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:06:46,610 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 10:06:46,691 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:06:46,694 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:06:47,170 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:06:47,170 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:06:47,501 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:06:47,501 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:06:47,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:06:47 BoogieIcfgContainer [2025-03-04 10:06:47,502 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:06:47,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:06:47,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:06:47,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:06:47,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:06:46" (1/3) ... [2025-03-04 10:06:47,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f4a555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:06:47, skipping insertion in model container [2025-03-04 10:06:47,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:06:46" (2/3) ... [2025-03-04 10:06:47,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f4a555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:06:47, skipping insertion in model container [2025-03-04 10:06:47,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:06:47" (3/3) ... [2025-03-04 10:06:47,508 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2025-03-04 10:06:47,518 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:06:47,519 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-collitem-subst.wvr.c that has 4 procedures, 28 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 10:06:47,519 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:06:47,605 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 10:06:47,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 27 transitions, 75 flow [2025-03-04 10:06:47,663 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-03-04 10:06:47,666 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 10:06:47,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 0/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-04 10:06:47,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 27 transitions, 75 flow [2025-03-04 10:06:47,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 23 transitions, 64 flow [2025-03-04 10:06:47,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:06:47,690 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;@ddffe6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:06:47,690 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 10:06:47,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:06:47,707 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2025-03-04 10:06:47,707 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 10:06:47,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:06:47,708 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:06:47,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:06:47,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:06:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash -809096882, now seen corresponding path program 1 times [2025-03-04 10:06:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:06:47,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330688361] [2025-03-04 10:06:47,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:06:47,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:06:47,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:06:48,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:06:48,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:06:48,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:06:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:06:51,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:06:51,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330688361] [2025-03-04 10:06:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330688361] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:06:51,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:06:51,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:06:51,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010862833] [2025-03-04 10:06:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:06:51,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:06:51,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:06:51,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:06:51,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:06:51,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-04 10:06:51,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:06:51,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:06:51,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-04 10:06:51,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:06:52,056 INFO L124 PetriNetUnfolderBase]: 178/334 cut-off events. [2025-03-04 10:06:52,056 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2025-03-04 10:06:52,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 334 events. 178/334 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1272 event pairs, 10 based on Foata normal form. 3/336 useless extension candidates. Maximal degree in co-relation 572. Up to 110 conditions per place. [2025-03-04 10:06:52,065 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 34 selfloop transitions, 5 changer transitions 8/51 dead transitions. [2025-03-04 10:06:52,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 244 flow [2025-03-04 10:06:52,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:06:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:06:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2025-03-04 10:06:52,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2025-03-04 10:06:52,078 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 64 flow. Second operand 6 states and 98 transitions. [2025-03-04 10:06:52,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 244 flow [2025-03-04 10:06:52,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 51 transitions, 212 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-04 10:06:52,086 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 67 flow [2025-03-04 10:06:52,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2025-03-04 10:06:52,091 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2025-03-04 10:06:52,091 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 67 flow [2025-03-04 10:06:52,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:06:52,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:06:52,091 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:06:52,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:06:52,092 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:06:52,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:06:52,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1890671676, now seen corresponding path program 2 times [2025-03-04 10:06:52,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:06:52,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096511632] [2025-03-04 10:06:52,092 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:06:52,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:06:52,110 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:06:52,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:06:52,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:06:52,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:06:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:06:53,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:06:53,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096511632] [2025-03-04 10:06:53,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096511632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:06:53,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:06:53,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:06:53,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239980730] [2025-03-04 10:06:53,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:06:53,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:06:53,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:06:53,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:06:53,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 10:06:53,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-04 10:06:53,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 67 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:06:53,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:06:53,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-04 10:06:53,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:06:54,174 INFO L124 PetriNetUnfolderBase]: 194/366 cut-off events. [2025-03-04 10:06:54,175 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2025-03-04 10:06:54,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 366 events. 194/366 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1514 event pairs, 14 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 825. Up to 151 conditions per place. [2025-03-04 10:06:54,179 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 34 selfloop transitions, 6 changer transitions 12/56 dead transitions. [2025-03-04 10:06:54,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 262 flow [2025-03-04 10:06:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 10:06:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 10:06:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2025-03-04 10:06:54,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5661375661375662 [2025-03-04 10:06:54,182 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 67 flow. Second operand 7 states and 107 transitions. [2025-03-04 10:06:54,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 262 flow [2025-03-04 10:06:54,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 258 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-04 10:06:54,185 INFO L231 Difference]: Finished difference. Result has 39 places, 25 transitions, 96 flow [2025-03-04 10:06:54,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2025-03-04 10:06:54,186 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2025-03-04 10:06:54,186 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 96 flow [2025-03-04 10:06:54,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:06:54,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:06:54,187 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:06:54,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 10:06:54,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:06:54,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:06:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1981474798, now seen corresponding path program 3 times [2025-03-04 10:06:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:06:54,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303261880] [2025-03-04 10:06:54,188 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:06:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:06:54,205 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:06:54,243 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:06:54,243 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 10:06:54,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:06:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:06:55,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:06:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303261880] [2025-03-04 10:06:55,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303261880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:06:55,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:06:55,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:06:55,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435242205] [2025-03-04 10:06:55,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:06:55,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:06:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:06:55,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:06:55,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:06:55,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-04 10:06:55,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:06:55,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:06:55,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-04 10:06:55,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:06:56,181 INFO L124 PetriNetUnfolderBase]: 189/369 cut-off events. [2025-03-04 10:06:56,183 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2025-03-04 10:06:56,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 369 events. 189/369 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1529 event pairs, 16 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 894. Up to 190 conditions per place. [2025-03-04 10:06:56,186 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 31 selfloop transitions, 5 changer transitions 12/52 dead transitions. [2025-03-04 10:06:56,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 267 flow [2025-03-04 10:06:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:06:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:06:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2025-03-04 10:06:56,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-03-04 10:06:56,189 INFO L175 Difference]: Start difference. First operand has 39 places, 25 transitions, 96 flow. Second operand 6 states and 96 transitions. [2025-03-04 10:06:56,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 267 flow [2025-03-04 10:06:56,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 250 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-04 10:06:56,192 INFO L231 Difference]: Finished difference. Result has 42 places, 24 transitions, 97 flow [2025-03-04 10:06:56,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2025-03-04 10:06:56,192 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2025-03-04 10:06:56,192 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 97 flow [2025-03-04 10:06:56,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:06:56,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:06:56,193 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:06:56,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 10:06:56,193 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:06:56,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:06:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash 757849672, now seen corresponding path program 4 times [2025-03-04 10:06:56,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:06:56,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215205486] [2025-03-04 10:06:56,193 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:06:56,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:06:56,207 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-03-04 10:06:56,237 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:06:56,237 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:06:56,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:06:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:06:57,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:06:57,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215205486] [2025-03-04 10:06:57,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215205486] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:06:57,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:06:57,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:06:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938419238] [2025-03-04 10:06:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:06:57,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:06:57,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:06:57,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:06:57,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:06:57,321 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-04 10:06:57,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:06:57,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:06:57,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-04 10:06:57,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:06:57,596 INFO L124 PetriNetUnfolderBase]: 138/270 cut-off events. [2025-03-04 10:06:57,597 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2025-03-04 10:06:57,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 270 events. 138/270 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 995 event pairs, 20 based on Foata normal form. 1/271 useless extension candidates. Maximal degree in co-relation 676. Up to 109 conditions per place. [2025-03-04 10:06:57,598 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 30 selfloop transitions, 5 changer transitions 9/48 dead transitions. [2025-03-04 10:06:57,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 253 flow [2025-03-04 10:06:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:06:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:06:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2025-03-04 10:06:57,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2025-03-04 10:06:57,601 INFO L175 Difference]: Start difference. First operand has 42 places, 24 transitions, 97 flow. Second operand 6 states and 92 transitions. [2025-03-04 10:06:57,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 253 flow [2025-03-04 10:06:57,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 231 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-04 10:06:57,603 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 88 flow [2025-03-04 10:06:57,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2025-03-04 10:06:57,604 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2025-03-04 10:06:57,605 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 88 flow [2025-03-04 10:06:57,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:06:57,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:06:57,605 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:06:57,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 10:06:57,605 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:06:57,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:06:57,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2077730506, now seen corresponding path program 5 times [2025-03-04 10:06:57,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:06:57,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085968827] [2025-03-04 10:06:57,606 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:06:57,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:06:57,618 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:06:57,647 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:06:57,647 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:06:57,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:06:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:06:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:06:59,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085968827] [2025-03-04 10:06:59,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085968827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:06:59,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:06:59,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:06:59,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433647361] [2025-03-04 10:06:59,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:06:59,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:06:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:06:59,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:06:59,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:06:59,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-04 10:06:59,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:06:59,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:06:59,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-04 10:06:59,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:07:00,026 INFO L124 PetriNetUnfolderBase]: 101/200 cut-off events. [2025-03-04 10:07:00,026 INFO L125 PetriNetUnfolderBase]: For 218/218 co-relation queries the response was YES. [2025-03-04 10:07:00,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 200 events. 101/200 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 667 event pairs, 5 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 532. Up to 69 conditions per place. [2025-03-04 10:07:00,027 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 19 selfloop transitions, 3 changer transitions 19/45 dead transitions. [2025-03-04 10:07:00,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 228 flow [2025-03-04 10:07:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:07:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:07:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2025-03-04 10:07:00,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-04 10:07:00,028 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 88 flow. Second operand 6 states and 90 transitions. [2025-03-04 10:07:00,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 228 flow [2025-03-04 10:07:00,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 215 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-04 10:07:00,030 INFO L231 Difference]: Finished difference. Result has 44 places, 21 transitions, 75 flow [2025-03-04 10:07:00,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=75, PETRI_PLACES=44, PETRI_TRANSITIONS=21} [2025-03-04 10:07:00,030 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2025-03-04 10:07:00,030 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 21 transitions, 75 flow [2025-03-04 10:07:00,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:07:00,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:07:00,030 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:07:00,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 10:07:00,030 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:07:00,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:07:00,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2142396480, now seen corresponding path program 6 times [2025-03-04 10:07:00,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:07:00,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007124369] [2025-03-04 10:07:00,031 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:07:00,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:07:00,042 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:07:00,062 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:07:00,063 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-04 10:07:00,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:07:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:07:01,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:07:01,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007124369] [2025-03-04 10:07:01,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007124369] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:07:01,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:07:01,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:07:01,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123197010] [2025-03-04 10:07:01,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:07:01,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:07:01,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:07:01,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:07:01,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:07:01,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-04 10:07:01,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 21 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:07:01,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:07:01,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-04 10:07:01,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:07:01,865 INFO L124 PetriNetUnfolderBase]: 42/89 cut-off events. [2025-03-04 10:07:01,866 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2025-03-04 10:07:01,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 89 events. 42/89 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 187 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 240. Up to 54 conditions per place. [2025-03-04 10:07:01,867 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2025-03-04 10:07:01,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 26 transitions, 130 flow [2025-03-04 10:07:01,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:07:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:07:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2025-03-04 10:07:01,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-04 10:07:01,869 INFO L175 Difference]: Start difference. First operand has 44 places, 21 transitions, 75 flow. Second operand 6 states and 72 transitions. [2025-03-04 10:07:01,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 26 transitions, 130 flow [2025-03-04 10:07:01,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 114 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-04 10:07:01,869 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2025-03-04 10:07:01,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2025-03-04 10:07:01,870 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2025-03-04 10:07:01,870 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2025-03-04 10:07:01,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:07:01,872 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-03-04 10:07:01,872 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-03-04 10:07:01,872 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-04 10:07:01,872 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-04 10:07:01,872 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-04 10:07:01,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 10:07:01,873 INFO L422 BasicCegarLoop]: Path program histogram: [6] [2025-03-04 10:07:01,876 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 10:07:01,877 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 10:07:01,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 10:07:01 BasicIcfg [2025-03-04 10:07:01,881 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 10:07:01,882 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 10:07:01,882 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 10:07:01,882 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 10:07:01,883 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:06:47" (3/4) ... [2025-03-04 10:07:01,884 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 10:07:01,886 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-04 10:07:01,886 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-04 10:07:01,886 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-04 10:07:01,890 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 74 nodes and edges [2025-03-04 10:07:01,890 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2025-03-04 10:07:01,890 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2025-03-04 10:07:01,891 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-04 10:07:01,891 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 10:07:01,952 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 10:07:01,953 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 10:07:01,953 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 10:07:01,954 INFO L158 Benchmark]: Toolchain (without parser) took 15624.15ms. Allocated memory was 167.8MB in the beginning and 880.8MB in the end (delta: 713.0MB). Free memory was 123.8MB in the beginning and 641.2MB in the end (delta: -517.4MB). Peak memory consumption was 194.5MB. Max. memory is 16.1GB. [2025-03-04 10:07:01,954 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:07:01,955 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.10ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 112.1MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:07:01,955 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.65ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 109.1MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:07:01,955 INFO L158 Benchmark]: Boogie Preprocessor took 36.70ms. Allocated memory is still 167.8MB. Free memory was 109.1MB in the beginning and 106.4MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:07:01,955 INFO L158 Benchmark]: IcfgBuilder took 942.86ms. Allocated memory is still 167.8MB. Free memory was 106.4MB in the beginning and 56.6MB in the end (delta: 49.8MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. [2025-03-04 10:07:01,956 INFO L158 Benchmark]: TraceAbstraction took 14378.30ms. Allocated memory was 167.8MB in the beginning and 880.8MB in the end (delta: 713.0MB). Free memory was 55.7MB in the beginning and 649.5MB in the end (delta: -593.8MB). Peak memory consumption was 120.5MB. Max. memory is 16.1GB. [2025-03-04 10:07:01,956 INFO L158 Benchmark]: Witness Printer took 71.11ms. Allocated memory is still 880.8MB. Free memory was 649.5MB in the beginning and 641.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:07:01,957 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.10ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 112.1MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.65ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 109.1MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.70ms. Allocated memory is still 167.8MB. Free memory was 109.1MB in the beginning and 106.4MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 942.86ms. Allocated memory is still 167.8MB. Free memory was 106.4MB in the beginning and 56.6MB in the end (delta: 49.8MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14378.30ms. Allocated memory was 167.8MB in the beginning and 880.8MB in the end (delta: 713.0MB). Free memory was 55.7MB in the beginning and 649.5MB in the end (delta: -593.8MB). Peak memory consumption was 120.5MB. Max. memory is 16.1GB. * Witness Printer took 71.11ms. Allocated memory is still 880.8MB. Free memory was 649.5MB in the beginning and 641.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 75]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 43 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 219 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 517 IncrementalHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 517 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=3, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 6218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 10:07:01,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE