./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe013_tso.i --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/pthread-wmm/safe013_tso.i -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 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:55:31,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:55:31,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:55:32,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:55:32,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:55:32,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:55:32,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:55:32,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:55:32,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:55:32,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:55:32,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:55:32,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:55:32,019 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:55:32,020 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:55:32,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:55:32,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:55:32,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:55:32,021 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:55:32,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:55:32,021 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 -> 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 [2025-03-04 09:55:32,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:55:32,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:55:32,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:55:32,265 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:55:32,266 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:55:32,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe013_tso.i [2025-03-04 09:55:33,469 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239056551/37970195b5f64c34bea38c8a5894658c/FLAG82779a5a7 [2025-03-04 09:55:33,782 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:55:33,786 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.i [2025-03-04 09:55:33,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239056551/37970195b5f64c34bea38c8a5894658c/FLAG82779a5a7 [2025-03-04 09:55:33,822 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239056551/37970195b5f64c34bea38c8a5894658c [2025-03-04 09:55:33,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:55:33,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:55:33,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:55:33,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:55:33,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:55:33,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:55:33" (1/1) ... [2025-03-04 09:55:33,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77bb3c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:33, skipping insertion in model container [2025-03-04 09:55:33,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:55:33" (1/1) ... [2025-03-04 09:55:33,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:55:34,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:55:34,075 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:55:34,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:55:34,144 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:55:34,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34 WrapperNode [2025-03-04 09:55:34,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:55:34,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:55:34,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:55:34,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:55:34,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,176 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2025-03-04 09:55:34,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:55:34,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:55:34,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:55:34,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:55:34,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,205 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 09:55:34,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,208 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:55:34,216 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:55:34,217 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:55:34,217 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:55:34,217 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (1/1) ... [2025-03-04 09:55:34,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:55:34,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:55:34,245 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 09:55:34,247 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 09:55:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:55:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:55:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-04 09:55:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-04 09:55:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-04 09:55:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-04 09:55:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-04 09:55:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-04 09:55:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:55:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:55:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:55:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:55:34,267 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 09:55:34,358 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:55:34,360 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:55:34,499 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:55:34,500 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:55:34,561 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:55:34,561 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:55:34,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:55:34 BoogieIcfgContainer [2025-03-04 09:55:34,561 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:55:34,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:55:34,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:55:34,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:55:34,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:55:33" (1/3) ... [2025-03-04 09:55:34,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7956d249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:55:34, skipping insertion in model container [2025-03-04 09:55:34,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:55:34" (2/3) ... [2025-03-04 09:55:34,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7956d249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:55:34, skipping insertion in model container [2025-03-04 09:55:34,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:55:34" (3/3) ... [2025-03-04 09:55:34,570 INFO L128 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2025-03-04 09:55:34,581 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:55:34,583 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe013_tso.i that has 4 procedures, 43 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 09:55:34,583 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:55:34,622 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:55:34,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 44 transitions, 100 flow [2025-03-04 09:55:34,672 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2025-03-04 09:55:34,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:55:34,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 2/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2025-03-04 09:55:34,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 44 transitions, 100 flow [2025-03-04 09:55:34,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 40 transitions, 89 flow [2025-03-04 09:55:34,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:55:34,703 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;@73dbb21d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:55:34,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 09:55:34,718 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:55:34,718 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2025-03-04 09:55:34,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:55:34,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:55:34,719 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:55:34,719 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:55:34,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:55:34,723 INFO L85 PathProgramCache]: Analyzing trace with hash -33813954, now seen corresponding path program 1 times [2025-03-04 09:55:34,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:55:34,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400860130] [2025-03-04 09:55:34,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:55:34,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:55:34,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 09:55:34,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 09:55:34,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:55:34,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:55:34,960 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 09:55:34,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:55:34,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400860130] [2025-03-04 09:55:34,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400860130] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:55:34,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:55:34,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:55:34,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746979756] [2025-03-04 09:55:34,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:55:34,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:55:34,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:55:34,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:55:34,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:55:34,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2025-03-04 09:55:34,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 09:55:35,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:55:35,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2025-03-04 09:55:35,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:55:35,676 INFO L124 PetriNetUnfolderBase]: 5627/8717 cut-off events. [2025-03-04 09:55:35,677 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-04 09:55:35,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16816 conditions, 8717 events. 5627/8717 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 52002 event pairs, 5627 based on Foata normal form. 756/9420 useless extension candidates. Maximal degree in co-relation 16805. Up to 7994 conditions per place. [2025-03-04 09:55:35,736 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 28 selfloop transitions, 1 changer transitions 1/36 dead transitions. [2025-03-04 09:55:35,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 141 flow [2025-03-04 09:55:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:55:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:55:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-03-04 09:55:35,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2025-03-04 09:55:35,750 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 89 flow. Second operand 3 states and 60 transitions. [2025-03-04 09:55:35,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 141 flow [2025-03-04 09:55:35,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 09:55:35,759 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 78 flow [2025-03-04 09:55:35,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2025-03-04 09:55:35,765 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2025-03-04 09:55:35,768 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 78 flow [2025-03-04 09:55:35,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 09:55:35,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:55:35,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:55:35,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:55:35,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:55:35,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:55:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash -33813512, now seen corresponding path program 1 times [2025-03-04 09:55:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:55:35,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534609508] [2025-03-04 09:55:35,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:55:35,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:55:35,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 09:55:35,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 09:55:35,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:55:35,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:55:36,028 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 09:55:36,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:55:36,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534609508] [2025-03-04 09:55:36,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534609508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:55:36,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:55:36,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:55:36,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806204517] [2025-03-04 09:55:36,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:55:36,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:55:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:55:36,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:55:36,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:55:36,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-03-04 09:55:36,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 09:55:36,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:55:36,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-03-04 09:55:36,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:55:36,510 INFO L124 PetriNetUnfolderBase]: 4015/6427 cut-off events. [2025-03-04 09:55:36,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:55:36,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12433 conditions, 6427 events. 4015/6427 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 38337 event pairs, 661 based on Foata normal form. 252/6668 useless extension candidates. Maximal degree in co-relation 12427. Up to 3409 conditions per place. [2025-03-04 09:55:36,540 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 58 selfloop transitions, 5 changer transitions 1/70 dead transitions. [2025-03-04 09:55:36,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 280 flow [2025-03-04 09:55:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:55:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 09:55:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-03-04 09:55:36,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2025-03-04 09:55:36,543 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 78 flow. Second operand 4 states and 106 transitions. [2025-03-04 09:55:36,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 280 flow [2025-03-04 09:55:36,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:55:36,545 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 111 flow [2025-03-04 09:55:36,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2025-03-04 09:55:36,547 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2025-03-04 09:55:36,547 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 111 flow [2025-03-04 09:55:36,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 09:55:36,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:55:36,547 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] [2025-03-04 09:55:36,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:55:36,548 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:55:36,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:55:36,548 INFO L85 PathProgramCache]: Analyzing trace with hash -395488111, now seen corresponding path program 1 times [2025-03-04 09:55:36,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:55:36,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165692964] [2025-03-04 09:55:36,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:55:36,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:55:36,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:55:36,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:55:36,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:55:36,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:55:36,724 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 09:55:36,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:55:36,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165692964] [2025-03-04 09:55:36,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165692964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:55:36,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:55:36,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:55:36,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299874532] [2025-03-04 09:55:36,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:55:36,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:55:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:55:36,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:55:36,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:55:36,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-03-04 09:55:36,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:55:36,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:55:36,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-03-04 09:55:36,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:55:37,055 INFO L124 PetriNetUnfolderBase]: 2207/3531 cut-off events. [2025-03-04 09:55:37,056 INFO L125 PetriNetUnfolderBase]: For 638/638 co-relation queries the response was YES. [2025-03-04 09:55:37,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7980 conditions, 3531 events. 2207/3531 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 17996 event pairs, 427 based on Foata normal form. 172/3692 useless extension candidates. Maximal degree in co-relation 7971. Up to 1128 conditions per place. [2025-03-04 09:55:37,068 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 74 selfloop transitions, 8 changer transitions 1/89 dead transitions. [2025-03-04 09:55:37,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 89 transitions, 400 flow [2025-03-04 09:55:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:55:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 09:55:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2025-03-04 09:55:37,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2025-03-04 09:55:37,070 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 111 flow. Second operand 5 states and 135 transitions. [2025-03-04 09:55:37,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 89 transitions, 400 flow [2025-03-04 09:55:37,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 89 transitions, 390 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-04 09:55:37,074 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 151 flow [2025-03-04 09:55:37,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2025-03-04 09:55:37,075 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2025-03-04 09:55:37,076 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 151 flow [2025-03-04 09:55:37,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:55:37,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:55:37,076 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, 1, 1, 1, 1] [2025-03-04 09:55:37,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:55:37,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:55:37,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:55:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1020571870, now seen corresponding path program 1 times [2025-03-04 09:55:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:55:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815899805] [2025-03-04 09:55:37,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:55:37,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:55:37,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 09:55:37,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 09:55:37,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:55:37,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:55:37,225 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 09:55:37,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:55:37,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815899805] [2025-03-04 09:55:37,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815899805] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:55:37,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:55:37,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:55:37,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487822235] [2025-03-04 09:55:37,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:55:37,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:55:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:55:37,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:55:37,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:55:37,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-03-04 09:55:37,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 09:55:37,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:55:37,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-03-04 09:55:37,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:55:37,498 INFO L124 PetriNetUnfolderBase]: 1355/2099 cut-off events. [2025-03-04 09:55:37,499 INFO L125 PetriNetUnfolderBase]: For 1202/1202 co-relation queries the response was YES. [2025-03-04 09:55:37,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5222 conditions, 2099 events. 1355/2099 cut-off events. For 1202/1202 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 9291 event pairs, 385 based on Foata normal form. 60/2148 useless extension candidates. Maximal degree in co-relation 5211. Up to 788 conditions per place. [2025-03-04 09:55:37,510 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 11 changer transitions 1/80 dead transitions. [2025-03-04 09:55:37,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 80 transitions, 387 flow [2025-03-04 09:55:37,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:55:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 09:55:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2025-03-04 09:55:37,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2025-03-04 09:55:37,512 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 151 flow. Second operand 6 states and 136 transitions. [2025-03-04 09:55:37,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 80 transitions, 387 flow [2025-03-04 09:55:37,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 362 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-04 09:55:37,522 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 165 flow [2025-03-04 09:55:37,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2025-03-04 09:55:37,523 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2025-03-04 09:55:37,523 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 165 flow [2025-03-04 09:55:37,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 09:55:37,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:55:37,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:55:37,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:55:37,524 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:55:37,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:55:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash -522473667, now seen corresponding path program 1 times [2025-03-04 09:55:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:55:37,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694452761] [2025-03-04 09:55:37,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:55:37,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:55:37,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-04 09:55:37,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 09:55:37,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:55:37,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:55:37,684 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 09:55:37,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:55:37,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694452761] [2025-03-04 09:55:37,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694452761] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:55:37,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:55:37,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:55:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498650622] [2025-03-04 09:55:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:55:37,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:55:37,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:55:37,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:55:37,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:55:37,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-03-04 09:55:37,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 165 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:55:37,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:55:37,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-03-04 09:55:37,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:55:38,094 INFO L124 PetriNetUnfolderBase]: 2433/3775 cut-off events. [2025-03-04 09:55:38,094 INFO L125 PetriNetUnfolderBase]: For 2822/2822 co-relation queries the response was YES. [2025-03-04 09:55:38,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9679 conditions, 3775 events. 2433/3775 cut-off events. For 2822/2822 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18986 event pairs, 142 based on Foata normal form. 16/3788 useless extension candidates. Maximal degree in co-relation 9667. Up to 1395 conditions per place. [2025-03-04 09:55:38,105 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 50 selfloop transitions, 6 changer transitions 79/141 dead transitions. [2025-03-04 09:55:38,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 141 transitions, 837 flow [2025-03-04 09:55:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:55:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 09:55:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215 transitions. [2025-03-04 09:55:38,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2025-03-04 09:55:38,107 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 165 flow. Second operand 10 states and 215 transitions. [2025-03-04 09:55:38,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 141 transitions, 837 flow [2025-03-04 09:55:38,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 141 transitions, 643 flow, removed 30 selfloop flow, removed 8 redundant places. [2025-03-04 09:55:38,120 INFO L231 Difference]: Finished difference. Result has 64 places, 44 transitions, 159 flow [2025-03-04 09:55:38,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=159, PETRI_PLACES=64, PETRI_TRANSITIONS=44} [2025-03-04 09:55:38,121 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2025-03-04 09:55:38,121 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 44 transitions, 159 flow [2025-03-04 09:55:38,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:55:38,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:55:38,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:55:38,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:55:38,121 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:55:38,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:55:38,122 INFO L85 PathProgramCache]: Analyzing trace with hash -437654637, now seen corresponding path program 2 times [2025-03-04 09:55:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:55:38,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642008966] [2025-03-04 09:55:38,122 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:55:38,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:55:38,130 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-03-04 09:55:38,137 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 09:55:38,139 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 09:55:38,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:55:38,260 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 09:55:38,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:55:38,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642008966] [2025-03-04 09:55:38,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642008966] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:55:38,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:55:38,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:55:38,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042037699] [2025-03-04 09:55:38,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:55:38,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:55:38,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:55:38,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:55:38,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:55:38,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-03-04 09:55:38,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 44 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 09:55:38,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:55:38,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-03-04 09:55:38,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:55:38,468 INFO L124 PetriNetUnfolderBase]: 1056/1751 cut-off events. [2025-03-04 09:55:38,469 INFO L125 PetriNetUnfolderBase]: For 760/766 co-relation queries the response was YES. [2025-03-04 09:55:38,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4272 conditions, 1751 events. 1056/1751 cut-off events. For 760/766 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8394 event pairs, 340 based on Foata normal form. 8/1751 useless extension candidates. Maximal degree in co-relation 4261. Up to 976 conditions per place. [2025-03-04 09:55:38,473 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2025-03-04 09:55:38,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 369 flow [2025-03-04 09:55:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:55:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 09:55:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2025-03-04 09:55:38,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2025-03-04 09:55:38,474 INFO L175 Difference]: Start difference. First operand has 64 places, 44 transitions, 159 flow. Second operand 6 states and 115 transitions. [2025-03-04 09:55:38,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 369 flow [2025-03-04 09:55:38,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 357 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-04 09:55:38,476 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2025-03-04 09:55:38,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2025-03-04 09:55:38,477 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2025-03-04 09:55:38,477 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2025-03-04 09:55:38,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 09:55:38,479 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-03-04 09:55:38,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-03-04 09:55:38,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-04 09:55:38,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-04 09:55:38,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-04 09:55:38,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 09:55:38,482 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2025-03-04 09:55:38,484 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 09:55:38,485 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 09:55:38,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 09:55:38 BasicIcfg [2025-03-04 09:55:38,491 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 09:55:38,491 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 09:55:38,491 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 09:55:38,491 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 09:55:38,492 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:55:34" (3/4) ... [2025-03-04 09:55:38,493 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 09:55:38,496 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-04 09:55:38,496 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-04 09:55:38,496 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-04 09:55:38,500 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-03-04 09:55:38,500 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-04 09:55:38,500 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-04 09:55:38,500 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-04 09:55:38,554 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 09:55:38,554 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 09:55:38,554 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 09:55:38,555 INFO L158 Benchmark]: Toolchain (without parser) took 4728.37ms. Allocated memory was 167.8MB in the beginning and 310.4MB in the end (delta: 142.6MB). Free memory was 131.5MB in the beginning and 179.8MB in the end (delta: -48.3MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2025-03-04 09:55:38,555 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:55:38,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.84ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 111.4MB in the end (delta: 19.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:55:38,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.63ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 109.8MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:55:38,555 INFO L158 Benchmark]: Boogie Preprocessor took 38.35ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 108.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:55:38,556 INFO L158 Benchmark]: IcfgBuilder took 344.73ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 88.5MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:55:38,556 INFO L158 Benchmark]: TraceAbstraction took 3927.58ms. Allocated memory was 167.8MB in the beginning and 310.4MB in the end (delta: 142.6MB). Free memory was 88.1MB in the beginning and 185.4MB in the end (delta: -97.3MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. [2025-03-04 09:55:38,556 INFO L158 Benchmark]: Witness Printer took 63.17ms. Allocated memory is still 310.4MB. Free memory was 185.4MB in the beginning and 179.8MB in the end (delta: 5.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:55:38,557 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.84ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 111.4MB in the end (delta: 19.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.63ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 109.8MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.35ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 108.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 344.73ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 88.5MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3927.58ms. Allocated memory was 167.8MB in the beginning and 310.4MB in the end (delta: 142.6MB). Free memory was 88.1MB in the beginning and 185.4MB in the end (delta: -97.3MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. * Witness Printer took 63.17ms. Allocated memory is still 310.4MB. Free memory was 185.4MB in the beginning and 179.8MB in the end (delta: 5.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 778]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: 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, 68 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: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 384 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 380 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 768 IncrementalHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 0 mSDtfsCounter, 768 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=4, InterpolantAutomatonStates: 34, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 453 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 09:55:38,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE