./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.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/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.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 a233f90faab2ceb8ddfb042463870c03c0794d3cd45b2ba20de731314559cb95 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 10:02:15,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:02:15,757 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:02:15,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:02:15,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:02:15,782 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:02:15,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:02:15,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:02:15,783 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:02:15,783 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:02:15,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:02:15,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:02:15,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:02:15,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:02:15,783 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:02:15,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:02:15,783 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:02:15,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:02:15,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:02:15,784 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:02:15,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:02:15,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:02:15,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:02:15,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:02:15,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:02:15,785 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 -> a233f90faab2ceb8ddfb042463870c03c0794d3cd45b2ba20de731314559cb95 [2025-03-04 10:02:16,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:02:16,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:02:16,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:02:16,018 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:02:16,018 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:02:16,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2025-03-04 10:02:17,122 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b31e844e8/f0c807e8d09d4fb3844225fde5879d60/FLAG415608f2e [2025-03-04 10:02:17,361 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:02:17,362 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2025-03-04 10:02:17,376 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b31e844e8/f0c807e8d09d4fb3844225fde5879d60/FLAG415608f2e [2025-03-04 10:02:17,679 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b31e844e8/f0c807e8d09d4fb3844225fde5879d60 [2025-03-04 10:02:17,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:02:17,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:02:17,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:02:17,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:02:17,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:02:17,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47793cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17, skipping insertion in model container [2025-03-04 10:02:17,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,708 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:02:17,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:02:17,883 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:02:17,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:02:17,941 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:02:17,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17 WrapperNode [2025-03-04 10:02:17,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:02:17,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:02:17,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:02:17,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:02:17,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,973 INFO L138 Inliner]: procedures = 162, calls = 44, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 80 [2025-03-04 10:02:17,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:02:17,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:02:17,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:02:17,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:02:17,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,991 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2025-03-04 10:02:17,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,995 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:17,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:02:17,999 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:02:17,999 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:02:17,999 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:02:17,999 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (1/1) ... [2025-03-04 10:02:18,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:02:18,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:02:18,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 10:02:18,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 10:02:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 10:02:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:02:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 10:02:18,039 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 10:02:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:02:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 10:02:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 10:02:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 10:02:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 10:02:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:02:18,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:02:18,040 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 10:02:18,118 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:02:18,119 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:02:18,265 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:02:18,265 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:02:18,367 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:02:18,367 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:02:18,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:02:18 BoogieIcfgContainer [2025-03-04 10:02:18,368 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:02:18,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:02:18,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:02:18,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:02:18,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:02:17" (1/3) ... [2025-03-04 10:02:18,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28417fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:02:18, skipping insertion in model container [2025-03-04 10:02:18,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:02:17" (2/3) ... [2025-03-04 10:02:18,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28417fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:02:18, skipping insertion in model container [2025-03-04 10:02:18,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:02:18" (3/3) ... [2025-03-04 10:02:18,375 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2025-03-04 10:02:18,387 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:02:18,388 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i that has 2 procedures, 54 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-03-04 10:02:18,388 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:02:18,429 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 10:02:18,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions, 121 flow [2025-03-04 10:02:18,490 INFO L124 PetriNetUnfolderBase]: 4/56 cut-off events. [2025-03-04 10:02:18,494 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 10:02:18,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 56 events. 4/56 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-03-04 10:02:18,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 57 transitions, 121 flow [2025-03-04 10:02:18,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 55 transitions, 116 flow [2025-03-04 10:02:18,507 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:02:18,518 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;@15aacdfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:02:18,518 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-04 10:02:18,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:02:18,524 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2025-03-04 10:02:18,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 10:02:18,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:02:18,526 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:02:18,526 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2025-03-04 10:02:18,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:02:18,531 INFO L85 PathProgramCache]: Analyzing trace with hash -367078408, now seen corresponding path program 1 times [2025-03-04 10:02:18,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:02:18,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347956135] [2025-03-04 10:02:18,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:02:18,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:02:18,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 10:02:18,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 10:02:18,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:02:18,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:02:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:02:18,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:02:18,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347956135] [2025-03-04 10:02:18,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347956135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:02:18,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:02:18,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:02:18,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119145454] [2025-03-04 10:02:18,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:02:18,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:02:18,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:02:18,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:02:18,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:02:18,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2025-03-04 10:02:18,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:18,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:02:18,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2025-03-04 10:02:18,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:02:19,101 INFO L124 PetriNetUnfolderBase]: 193/514 cut-off events. [2025-03-04 10:02:19,102 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 10:02:19,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 514 events. 193/514 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2490 event pairs, 96 based on Foata normal form. 32/527 useless extension candidates. Maximal degree in co-relation 925. Up to 228 conditions per place. [2025-03-04 10:02:19,112 INFO L140 encePairwiseOnDemand]: 42/57 looper letters, 48 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2025-03-04 10:02:19,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 81 transitions, 294 flow [2025-03-04 10:02:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:02:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:02:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2025-03-04 10:02:19,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2025-03-04 10:02:19,124 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 116 flow. Second operand 5 states and 170 transitions. [2025-03-04 10:02:19,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 81 transitions, 294 flow [2025-03-04 10:02:19,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:02:19,131 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 200 flow [2025-03-04 10:02:19,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2025-03-04 10:02:19,137 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2025-03-04 10:02:19,137 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 200 flow [2025-03-04 10:02:19,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:19,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:02:19,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:02:19,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:02:19,138 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2025-03-04 10:02:19,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:02:19,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2026849712, now seen corresponding path program 1 times [2025-03-04 10:02:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:02:19,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108864880] [2025-03-04 10:02:19,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:02:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:02:19,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 10:02:19,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 10:02:19,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:02:19,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:02:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:02:19,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:02:19,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108864880] [2025-03-04 10:02:19,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108864880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:02:19,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:02:19,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:02:19,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753095096] [2025-03-04 10:02:19,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:02:19,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:02:19,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:02:19,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:02:19,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:02:19,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2025-03-04 10:02:19,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:19,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:02:19,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2025-03-04 10:02:19,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:02:19,419 INFO L124 PetriNetUnfolderBase]: 148/479 cut-off events. [2025-03-04 10:02:19,420 INFO L125 PetriNetUnfolderBase]: For 163/173 co-relation queries the response was YES. [2025-03-04 10:02:19,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 479 events. 148/479 cut-off events. For 163/173 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2460 event pairs, 47 based on Foata normal form. 24/497 useless extension candidates. Maximal degree in co-relation 947. Up to 217 conditions per place. [2025-03-04 10:02:19,425 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 46 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2025-03-04 10:02:19,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 390 flow [2025-03-04 10:02:19,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:02:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:02:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2025-03-04 10:02:19,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2025-03-04 10:02:19,428 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 200 flow. Second operand 3 states and 117 transitions. [2025-03-04 10:02:19,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 390 flow [2025-03-04 10:02:19,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 386 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-04 10:02:19,434 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 258 flow [2025-03-04 10:02:19,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2025-03-04 10:02:19,435 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2025-03-04 10:02:19,435 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 258 flow [2025-03-04 10:02:19,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:19,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:02:19,436 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:02:19,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 10:02:19,436 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2025-03-04 10:02:19,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:02:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash 484755324, now seen corresponding path program 1 times [2025-03-04 10:02:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:02:19,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38576474] [2025-03-04 10:02:19,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:02:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:02:19,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 10:02:19,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:02:19,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:02:19,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:02:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:02:19,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:02:19,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38576474] [2025-03-04 10:02:19,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38576474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:02:19,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:02:19,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:02:19,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762189058] [2025-03-04 10:02:19,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:02:19,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:02:19,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:02:19,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:02:19,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:02:19,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2025-03-04 10:02:19,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:19,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:02:19,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2025-03-04 10:02:19,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:02:19,753 INFO L124 PetriNetUnfolderBase]: 142/479 cut-off events. [2025-03-04 10:02:19,754 INFO L125 PetriNetUnfolderBase]: For 343/353 co-relation queries the response was YES. [2025-03-04 10:02:19,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 479 events. 142/479 cut-off events. For 343/353 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2469 event pairs, 54 based on Foata normal form. 6/483 useless extension candidates. Maximal degree in co-relation 1167. Up to 193 conditions per place. [2025-03-04 10:02:19,757 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 56 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2025-03-04 10:02:19,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 87 transitions, 490 flow [2025-03-04 10:02:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:02:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:02:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2025-03-04 10:02:19,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6008771929824561 [2025-03-04 10:02:19,760 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 258 flow. Second operand 4 states and 137 transitions. [2025-03-04 10:02:19,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 87 transitions, 490 flow [2025-03-04 10:02:19,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 87 transitions, 468 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-04 10:02:19,764 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 282 flow [2025-03-04 10:02:19,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2025-03-04 10:02:19,764 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2025-03-04 10:02:19,764 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 282 flow [2025-03-04 10:02:19,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:19,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:02:19,765 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] [2025-03-04 10:02:19,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 10:02:19,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2025-03-04 10:02:19,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:02:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1728354271, now seen corresponding path program 1 times [2025-03-04 10:02:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:02:19,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165686964] [2025-03-04 10:02:19,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:02:19,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:02:19,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-04 10:02:19,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-04 10:02:19,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:02:19,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:02:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:02:19,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:02:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165686964] [2025-03-04 10:02:19,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165686964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:02:19,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:02:19,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:02:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015263734] [2025-03-04 10:02:19,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:02:19,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:02:19,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:02:19,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:02:19,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:02:19,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2025-03-04 10:02:19,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:19,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:02:19,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2025-03-04 10:02:19,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:02:20,013 INFO L124 PetriNetUnfolderBase]: 95/341 cut-off events. [2025-03-04 10:02:20,014 INFO L125 PetriNetUnfolderBase]: For 280/283 co-relation queries the response was YES. [2025-03-04 10:02:20,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 341 events. 95/341 cut-off events. For 280/283 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1548 event pairs, 35 based on Foata normal form. 1/336 useless extension candidates. Maximal degree in co-relation 950. Up to 143 conditions per place. [2025-03-04 10:02:20,016 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 43 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2025-03-04 10:02:20,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 451 flow [2025-03-04 10:02:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:02:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:02:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2025-03-04 10:02:20,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-04 10:02:20,019 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 282 flow. Second operand 4 states and 133 transitions. [2025-03-04 10:02:20,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 451 flow [2025-03-04 10:02:20,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 77 transitions, 444 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-04 10:02:20,023 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 317 flow [2025-03-04 10:02:20,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2025-03-04 10:02:20,024 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2025-03-04 10:02:20,024 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 317 flow [2025-03-04 10:02:20,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:20,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:02:20,024 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] [2025-03-04 10:02:20,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 10:02:20,025 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2025-03-04 10:02:20,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:02:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash -347260883, now seen corresponding path program 1 times [2025-03-04 10:02:20,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:02:20,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749572701] [2025-03-04 10:02:20,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:02:20,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:02:20,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 10:02:20,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:02:20,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:02:20,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:02:20,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:02:20,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:02:20,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749572701] [2025-03-04 10:02:20,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749572701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:02:20,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:02:20,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:02:20,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461307184] [2025-03-04 10:02:20,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:02:20,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:02:20,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:02:20,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:02:20,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:02:20,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2025-03-04 10:02:20,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:20,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:02:20,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2025-03-04 10:02:20,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:02:20,257 INFO L124 PetriNetUnfolderBase]: 52/226 cut-off events. [2025-03-04 10:02:20,258 INFO L125 PetriNetUnfolderBase]: For 352/360 co-relation queries the response was YES. [2025-03-04 10:02:20,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 226 events. 52/226 cut-off events. For 352/360 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 765 event pairs, 17 based on Foata normal form. 15/241 useless extension candidates. Maximal degree in co-relation 243. Up to 93 conditions per place. [2025-03-04 10:02:20,259 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 35 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2025-03-04 10:02:20,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 388 flow [2025-03-04 10:02:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:02:20,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:02:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2025-03-04 10:02:20,261 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2025-03-04 10:02:20,261 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 317 flow. Second operand 4 states and 121 transitions. [2025-03-04 10:02:20,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 388 flow [2025-03-04 10:02:20,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 345 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-03-04 10:02:20,263 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 234 flow [2025-03-04 10:02:20,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2025-03-04 10:02:20,263 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2025-03-04 10:02:20,263 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 234 flow [2025-03-04 10:02:20,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:20,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:02:20,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:02:20,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 10:02:20,265 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2025-03-04 10:02:20,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:02:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1859249150, now seen corresponding path program 1 times [2025-03-04 10:02:20,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:02:20,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281749530] [2025-03-04 10:02:20,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:02:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:02:20,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-04 10:02:20,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-04 10:02:20,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:02:20,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:02:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:02:20,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:02:20,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281749530] [2025-03-04 10:02:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281749530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:02:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:02:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 10:02:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638743120] [2025-03-04 10:02:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:02:20,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:02:20,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:02:20,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:02:20,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:02:20,321 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2025-03-04 10:02:20,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:20,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:02:20,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2025-03-04 10:02:20,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:02:20,364 INFO L124 PetriNetUnfolderBase]: 52/217 cut-off events. [2025-03-04 10:02:20,364 INFO L125 PetriNetUnfolderBase]: For 322/329 co-relation queries the response was YES. [2025-03-04 10:02:20,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 217 events. 52/217 cut-off events. For 322/329 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 735 event pairs, 41 based on Foata normal form. 2/217 useless extension candidates. Maximal degree in co-relation 215. Up to 166 conditions per place. [2025-03-04 10:02:20,365 INFO L140 encePairwiseOnDemand]: 55/57 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2025-03-04 10:02:20,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 302 flow [2025-03-04 10:02:20,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:02:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:02:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2025-03-04 10:02:20,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2025-03-04 10:02:20,366 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 234 flow. Second operand 3 states and 88 transitions. [2025-03-04 10:02:20,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 302 flow [2025-03-04 10:02:20,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:02:20,367 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2025-03-04 10:02:20,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2025-03-04 10:02:20,367 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2025-03-04 10:02:20,367 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2025-03-04 10:02:20,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:02:20,372 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-04 10:02:20,372 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-04 10:02:20,372 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2025-03-04 10:02:20,372 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-04 10:02:20,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 10:02:20,373 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-03-04 10:02:20,377 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 10:02:20,377 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 10:02:20,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 10:02:20 BasicIcfg [2025-03-04 10:02:20,382 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 10:02:20,382 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 10:02:20,382 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 10:02:20,382 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 10:02:20,383 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:02:18" (3/4) ... [2025-03-04 10:02:20,384 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 10:02:20,386 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-04 10:02:20,388 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-03-04 10:02:20,389 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-03-04 10:02:20,389 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-04 10:02:20,389 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 10:02:20,443 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 10:02:20,443 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 10:02:20,443 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 10:02:20,444 INFO L158 Benchmark]: Toolchain (without parser) took 2760.64ms. Allocated memory is still 167.8MB. Free memory was 132.6MB in the beginning and 52.4MB in the end (delta: 80.2MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2025-03-04 10:02:20,444 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:02:20,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.19ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 112.7MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 10:02:20,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.38ms. Allocated memory is still 167.8MB. Free memory was 112.7MB in the beginning and 111.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:02:20,444 INFO L158 Benchmark]: Boogie Preprocessor took 23.55ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:02:20,444 INFO L158 Benchmark]: IcfgBuilder took 368.92ms. Allocated memory is still 167.8MB. Free memory was 109.4MB in the beginning and 78.5MB in the end (delta: 30.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 10:02:20,444 INFO L158 Benchmark]: TraceAbstraction took 2012.72ms. Allocated memory is still 167.8MB. Free memory was 78.0MB in the beginning and 57.9MB in the end (delta: 20.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2025-03-04 10:02:20,445 INFO L158 Benchmark]: Witness Printer took 61.01ms. Allocated memory is still 167.8MB. Free memory was 57.9MB in the beginning and 52.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:02:20,446 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.19ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 112.7MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.38ms. Allocated memory is still 167.8MB. Free memory was 112.7MB in the beginning and 111.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.55ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 368.92ms. Allocated memory is still 167.8MB. Free memory was 109.4MB in the beginning and 78.5MB in the end (delta: 30.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2012.72ms. Allocated memory is still 167.8MB. Free memory was 78.0MB in the beginning and 57.9MB in the end (delta: 20.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 61.01ms. Allocated memory is still 167.8MB. Free memory was 57.9MB in the beginning and 52.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 698]: 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 3 procedures, 73 locations, 4 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: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 143 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 422 IncrementalHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 2 mSDtfsCounter, 422 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred in iteration=4, InterpolantAutomatonStates: 23, 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, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 642 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 10:02:20,459 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