./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe001_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/safe001_tso.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:46:48,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:46:48,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:46:48,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:46:48,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:46:48,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:46:48,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:46:48,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:46:48,129 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:46:48,129 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:46:48,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:46:48,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:46:48,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:46:48,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:46:48,129 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:46:48,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:46:48,129 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:46:48,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:46:48,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:46:48,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:46:48,129 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:46:48,131 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:46:48,131 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:46:48,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:46:48,131 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:46:48,131 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:46:48,131 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:46:48,131 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:46:48,131 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:46:48,131 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:46:48,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:46:48,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:46:48,132 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-jdk21/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 -> d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d [2025-02-06 12:46:48,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:46:48,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:46:48,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:46:48,354 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:46:48,354 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:46:48,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe001_tso.i [2025-02-06 12:46:49,483 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86d2a5799/a25cb18e26a943cc8d2cbbd810a0b640/FLAG09bd8e7c1 [2025-02-06 12:46:49,785 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:46:49,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.i [2025-02-06 12:46:49,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86d2a5799/a25cb18e26a943cc8d2cbbd810a0b640/FLAG09bd8e7c1 [2025-02-06 12:46:49,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86d2a5799/a25cb18e26a943cc8d2cbbd810a0b640 [2025-02-06 12:46:49,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:46:49,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:46:49,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:46:49,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:46:49,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:46:49,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:46:49" (1/1) ... [2025-02-06 12:46:49,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2130992a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:49, skipping insertion in model container [2025-02-06 12:46:49,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:46:49" (1/1) ... [2025-02-06 12:46:49,854 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:46:50,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:46:50,059 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:46:50,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:46:50,131 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:46:50,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50 WrapperNode [2025-02-06 12:46:50,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:46:50,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:46:50,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:46:50,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:46:50,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,158 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2025-02-06 12:46:50,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:46:50,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:46:50,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:46:50,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:46:50,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,179 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]. [2025-02-06 12:46:50,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,183 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,185 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:46:50,187 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:46:50,187 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:46:50,187 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:46:50,188 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (1/1) ... [2025-02-06 12:46:50,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:46:50,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:46:50,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:46:50,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:46:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 12:46:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:46:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 12:46:50,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 12:46:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 12:46:50,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 12:46:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 12:46:50,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 12:46:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:46:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 12:46:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:46:50,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:46:50,236 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:46:50,327 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:46:50,330 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:46:50,487 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:46:50,488 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:46:50,559 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:46:50,559 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:46:50,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:46:50 BoogieIcfgContainer [2025-02-06 12:46:50,559 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:46:50,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:46:50,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:46:50,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:46:50,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:46:49" (1/3) ... [2025-02-06 12:46:50,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b33ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:46:50, skipping insertion in model container [2025-02-06 12:46:50,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:46:50" (2/3) ... [2025-02-06 12:46:50,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b33ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:46:50, skipping insertion in model container [2025-02-06 12:46:50,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:46:50" (3/3) ... [2025-02-06 12:46:50,568 INFO L128 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2025-02-06 12:46:50,580 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:46:50,583 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe001_tso.i that has 4 procedures, 42 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 12:46:50,583 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:46:50,627 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:46:50,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 43 transitions, 98 flow [2025-02-06 12:46:50,691 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2025-02-06 12:46:50,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:46:50,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 2/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2025-02-06 12:46:50,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 43 transitions, 98 flow [2025-02-06 12:46:50,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 39 transitions, 87 flow [2025-02-06 12:46:50,715 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:46:50,729 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;@569194d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:46:50,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 12:46:50,740 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:46:50,740 INFO L124 PetriNetUnfolderBase]: 2/37 cut-off events. [2025-02-06 12:46:50,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:46:50,740 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:46:50,741 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:46:50,741 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)] === [2025-02-06 12:46:50,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:46:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash 775915203, now seen corresponding path program 1 times [2025-02-06 12:46:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:46:50,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154651754] [2025-02-06 12:46:50,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:46:50,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:46:50,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:46:50,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:46:50,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:46:50,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:46:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:46:50,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:46:50,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154651754] [2025-02-06 12:46:50,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154651754] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:46:50,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:46:50,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:46:50,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093293968] [2025-02-06 12:46:50,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:46:50,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:46:50,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:46:50,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:46:50,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:46:50,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-02-06 12:46:50,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 87 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) [2025-02-06 12:46:50,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:46:50,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-02-06 12:46:50,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:46:51,566 INFO L124 PetriNetUnfolderBase]: 4775/7425 cut-off events. [2025-02-06 12:46:51,566 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-02-06 12:46:51,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14320 conditions, 7425 events. 4775/7425 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 43753 event pairs, 4775 based on Foata normal form. 648/8026 useless extension candidates. Maximal degree in co-relation 14309. Up to 6804 conditions per place. [2025-02-06 12:46:51,612 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 27 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2025-02-06 12:46:51,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 137 flow [2025-02-06 12:46:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:46:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:46:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2025-02-06 12:46:51,624 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2025-02-06 12:46:51,625 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 87 flow. Second operand 3 states and 59 transitions. [2025-02-06 12:46:51,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 137 flow [2025-02-06 12:46:51,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 12:46:51,633 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 76 flow [2025-02-06 12:46:51,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2025-02-06 12:46:51,639 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2025-02-06 12:46:51,639 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 76 flow [2025-02-06 12:46:51,640 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) [2025-02-06 12:46:51,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:46:51,640 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:46:51,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:46:51,641 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)] === [2025-02-06 12:46:51,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:46:51,643 INFO L85 PathProgramCache]: Analyzing trace with hash 775915600, now seen corresponding path program 1 times [2025-02-06 12:46:51,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:46:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824469996] [2025-02-06 12:46:51,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:46:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:46:51,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:46:51,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:46:51,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:46:51,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:46:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:46:51,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:46:51,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824469996] [2025-02-06 12:46:51,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824469996] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:46:51,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:46:51,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:46:51,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128574793] [2025-02-06 12:46:51,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:46:51,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:46:51,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:46:51,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:46:51,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:46:51,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-06 12:46:51,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 76 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) [2025-02-06 12:46:51,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:46:51,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-06 12:46:51,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:46:52,235 INFO L124 PetriNetUnfolderBase]: 3471/5581 cut-off events. [2025-02-06 12:46:52,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:46:52,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10787 conditions, 5581 events. 3471/5581 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 32999 event pairs, 535 based on Foata normal form. 216/5786 useless extension candidates. Maximal degree in co-relation 10781. Up to 3001 conditions per place. [2025-02-06 12:46:52,256 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 55 selfloop transitions, 5 changer transitions 1/67 dead transitions. [2025-02-06 12:46:52,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 268 flow [2025-02-06 12:46:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:46:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:46:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2025-02-06 12:46:52,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5988372093023255 [2025-02-06 12:46:52,258 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 76 flow. Second operand 4 states and 103 transitions. [2025-02-06 12:46:52,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 268 flow [2025-02-06 12:46:52,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:46:52,260 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 109 flow [2025-02-06 12:46:52,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2025-02-06 12:46:52,260 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2025-02-06 12:46:52,261 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 109 flow [2025-02-06 12:46:52,261 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) [2025-02-06 12:46:52,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:46:52,261 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] [2025-02-06 12:46:52,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:46:52,261 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)] === [2025-02-06 12:46:52,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:46:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash 468357836, now seen corresponding path program 1 times [2025-02-06 12:46:52,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:46:52,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114253713] [2025-02-06 12:46:52,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:46:52,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:46:52,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 12:46:52,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 12:46:52,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:46:52,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:46:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:46:52,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:46:52,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114253713] [2025-02-06 12:46:52,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114253713] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:46:52,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:46:52,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:46:52,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312418195] [2025-02-06 12:46:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:46:52,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:46:52,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:46:52,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:46:52,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:46:52,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-06 12:46:52,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 109 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) [2025-02-06 12:46:52,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:46:52,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-06 12:46:52,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:46:52,742 INFO L124 PetriNetUnfolderBase]: 1935/3117 cut-off events. [2025-02-06 12:46:52,742 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2025-02-06 12:46:52,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7054 conditions, 3117 events. 1935/3117 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 15852 event pairs, 339 based on Foata normal form. 152/3258 useless extension candidates. Maximal degree in co-relation 7045. Up to 985 conditions per place. [2025-02-06 12:46:52,762 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 70 selfloop transitions, 8 changer transitions 1/85 dead transitions. [2025-02-06 12:46:52,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 85 transitions, 384 flow [2025-02-06 12:46:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:46:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:46:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-02-06 12:46:52,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6093023255813953 [2025-02-06 12:46:52,764 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 109 flow. Second operand 5 states and 131 transitions. [2025-02-06 12:46:52,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 85 transitions, 384 flow [2025-02-06 12:46:52,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 85 transitions, 374 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 12:46:52,771 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 149 flow [2025-02-06 12:46:52,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2025-02-06 12:46:52,772 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2025-02-06 12:46:52,772 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 149 flow [2025-02-06 12:46:52,773 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) [2025-02-06 12:46:52,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:46:52,773 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] [2025-02-06 12:46:52,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:46:52,773 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)] === [2025-02-06 12:46:52,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:46:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 418118138, now seen corresponding path program 1 times [2025-02-06 12:46:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:46:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028269921] [2025-02-06 12:46:52,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:46:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:46:52,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 12:46:52,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 12:46:52,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:46:52,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:46:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:46:52,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:46:52,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028269921] [2025-02-06 12:46:52,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028269921] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:46:52,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:46:52,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 12:46:52,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219049972] [2025-02-06 12:46:52,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:46:52,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:46:52,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:46:52,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:46:52,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:46:52,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-06 12:46:52,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 149 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) [2025-02-06 12:46:52,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:46:52,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-06 12:46:52,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:46:53,169 INFO L124 PetriNetUnfolderBase]: 1167/1821 cut-off events. [2025-02-06 12:46:53,170 INFO L125 PetriNetUnfolderBase]: For 1126/1126 co-relation queries the response was YES. [2025-02-06 12:46:53,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 1821 events. 1167/1821 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7978 event pairs, 303 based on Foata normal form. 56/1866 useless extension candidates. Maximal degree in co-relation 4555. Up to 672 conditions per place. [2025-02-06 12:46:53,176 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 59 selfloop transitions, 11 changer transitions 1/77 dead transitions. [2025-02-06 12:46:53,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 375 flow [2025-02-06 12:46:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:46:53,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 12:46:53,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2025-02-06 12:46:53,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5155038759689923 [2025-02-06 12:46:53,180 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 149 flow. Second operand 6 states and 133 transitions. [2025-02-06 12:46:53,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 375 flow [2025-02-06 12:46:53,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 77 transitions, 350 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-06 12:46:53,190 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 163 flow [2025-02-06 12:46:53,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2025-02-06 12:46:53,191 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2025-02-06 12:46:53,192 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 163 flow [2025-02-06 12:46:53,192 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) [2025-02-06 12:46:53,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:46:53,192 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] [2025-02-06 12:46:53,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 12:46:53,192 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)] === [2025-02-06 12:46:53,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:46:53,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1582874128, now seen corresponding path program 1 times [2025-02-06 12:46:53,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:46:53,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743736128] [2025-02-06 12:46:53,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:46:53,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:46:53,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 12:46:53,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 12:46:53,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:46:53,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:46:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:46:53,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:46:53,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743736128] [2025-02-06 12:46:53,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743736128] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:46:53,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:46:53,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:46:53,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907376874] [2025-02-06 12:46:53,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:46:53,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:46:53,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:46:53,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:46:53,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:46:53,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-06 12:46:53,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:46:53,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:46:53,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-06 12:46:53,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:46:53,692 INFO L124 PetriNetUnfolderBase]: 2235/3489 cut-off events. [2025-02-06 12:46:53,692 INFO L125 PetriNetUnfolderBase]: For 2720/2720 co-relation queries the response was YES. [2025-02-06 12:46:53,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9003 conditions, 3489 events. 2235/3489 cut-off events. For 2720/2720 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17254 event pairs, 291 based on Foata normal form. 16/3494 useless extension candidates. Maximal degree in co-relation 8991. Up to 1308 conditions per place. [2025-02-06 12:46:53,706 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 52 selfloop transitions, 6 changer transitions 56/120 dead transitions. [2025-02-06 12:46:53,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 120 transitions, 707 flow [2025-02-06 12:46:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 12:46:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 12:46:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2025-02-06 12:46:53,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48578811369509045 [2025-02-06 12:46:53,708 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 163 flow. Second operand 9 states and 188 transitions. [2025-02-06 12:46:53,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 120 transitions, 707 flow [2025-02-06 12:46:53,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 120 transitions, 541 flow, removed 30 selfloop flow, removed 8 redundant places. [2025-02-06 12:46:53,725 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 151 flow [2025-02-06 12:46:53,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=151, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2025-02-06 12:46:53,726 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2025-02-06 12:46:53,726 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 151 flow [2025-02-06 12:46:53,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:46:53,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:46:53,727 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] [2025-02-06 12:46:53,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 12:46:53,729 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)] === [2025-02-06 12:46:53,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:46:53,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1138418524, now seen corresponding path program 2 times [2025-02-06 12:46:53,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:46:53,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880983611] [2025-02-06 12:46:53,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:46:53,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:46:53,738 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 1 equivalence classes. [2025-02-06 12:46:53,746 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 12:46:53,746 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 12:46:53,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:46:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:46:53,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:46:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880983611] [2025-02-06 12:46:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880983611] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:46:53,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:46:53,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 12:46:53,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813756730] [2025-02-06 12:46:53,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:46:53,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:46:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:46:53,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:46:53,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:46:53,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-06 12:46:53,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:46:53,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:46:53,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-06 12:46:53,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:46:54,066 INFO L124 PetriNetUnfolderBase]: 900/1432 cut-off events. [2025-02-06 12:46:54,066 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2025-02-06 12:46:54,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3546 conditions, 1432 events. 900/1432 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5789 event pairs, 118 based on Foata normal form. 8/1438 useless extension candidates. Maximal degree in co-relation 3537. Up to 960 conditions per place. [2025-02-06 12:46:54,069 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2025-02-06 12:46:54,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 368 flow [2025-02-06 12:46:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:46:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 12:46:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2025-02-06 12:46:54,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4011627906976744 [2025-02-06 12:46:54,070 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 151 flow. Second operand 8 states and 138 transitions. [2025-02-06 12:46:54,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 368 flow [2025-02-06 12:46:54,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 354 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-06 12:46:54,072 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2025-02-06 12:46:54,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2025-02-06 12:46:54,072 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2025-02-06 12:46:54,072 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2025-02-06 12:46:54,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:46:54,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-02-06 12:46:54,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-02-06 12:46:54,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-02-06 12:46:54,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-02-06 12:46:54,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-02-06 12:46:54,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 12:46:54,076 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2025-02-06 12:46:54,082 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 12:46:54,082 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 12:46:54,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 12:46:54 BasicIcfg [2025-02-06 12:46:54,085 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 12:46:54,086 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 12:46:54,086 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 12:46:54,086 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 12:46:54,087 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:46:50" (3/4) ... [2025-02-06 12:46:54,088 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 12:46:54,090 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-02-06 12:46:54,090 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-02-06 12:46:54,090 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-02-06 12:46:54,092 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-02-06 12:46:54,093 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-06 12:46:54,093 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-02-06 12:46:54,093 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 12:46:54,140 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 12:46:54,141 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 12:46:54,141 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 12:46:54,141 INFO L158 Benchmark]: Toolchain (without parser) took 4323.01ms. Allocated memory was 167.8MB in the beginning and 360.7MB in the end (delta: 192.9MB). Free memory was 128.7MB in the beginning and 232.4MB in the end (delta: -103.7MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. [2025-02-06 12:46:54,141 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 192.9MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:46:54,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.04ms. Allocated memory is still 167.8MB. Free memory was 128.7MB in the beginning and 108.8MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:46:54,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.29ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 107.1MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:46:54,142 INFO L158 Benchmark]: Boogie Preprocessor took 27.43ms. Allocated memory is still 167.8MB. Free memory was 107.1MB in the beginning and 105.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:46:54,142 INFO L158 Benchmark]: IcfgBuilder took 372.67ms. Allocated memory is still 167.8MB. Free memory was 105.2MB in the beginning and 85.9MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:46:54,142 INFO L158 Benchmark]: TraceAbstraction took 3524.32ms. Allocated memory was 167.8MB in the beginning and 360.7MB in the end (delta: 192.9MB). Free memory was 85.5MB in the beginning and 237.0MB in the end (delta: -151.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2025-02-06 12:46:54,143 INFO L158 Benchmark]: Witness Printer took 54.80ms. Allocated memory is still 360.7MB. Free memory was 237.0MB in the beginning and 232.4MB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:46:54,143 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 192.9MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.04ms. Allocated memory is still 167.8MB. Free memory was 128.7MB in the beginning and 108.8MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.29ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 107.1MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.43ms. Allocated memory is still 167.8MB. Free memory was 107.1MB in the beginning and 105.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 372.67ms. Allocated memory is still 167.8MB. Free memory was 105.2MB in the beginning and 85.9MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3524.32ms. Allocated memory was 167.8MB in the beginning and 360.7MB in the end (delta: 192.9MB). Free memory was 85.5MB in the beginning and 237.0MB in the end (delta: -151.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 54.80ms. Allocated memory is still 360.7MB. Free memory was 237.0MB in the beginning and 232.4MB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 774]: 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, 66 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: 3.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 352 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 686 IncrementalHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 686 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=4, InterpolantAutomatonStates: 35, 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, 0.8s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 555 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! [2025-02-06 12:46:54,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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