./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d 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/weaver/popl20-bad-threaded-sum-2.wvr.c -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 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:38:43,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:38:43,906 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:38:43,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:38:43,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:38:43,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:38:43,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:38:43,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:38:43,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:38:43,941 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:38:43,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:38:43,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:38:43,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:38:43,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:38:43,943 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:38:43,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:38:43,944 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:38:43,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:38:43,944 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:38:43,944 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:38:43,944 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:38:43,944 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:38:43,944 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:38:43,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:38:43,944 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:38:43,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:38:43,945 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:38:43,945 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:38:43,945 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:38:43,945 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:38:43,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:38:43,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:38:43,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:38:43,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:38:43,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:38:43,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:38:43,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:38:43,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:38:43,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:38:43,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:38:43,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:38:43,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:38:43,947 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 -> 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 [2025-02-08 08:38:44,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:38:44,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:38:44,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:38:44,232 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:38:44,232 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:38:44,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2025-02-08 08:38:45,514 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aefa46ea3/6aaefff4e63f47d1a84c2e51b7ee4aab/FLAG8fe93c85d [2025-02-08 08:38:45,849 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:38:45,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2025-02-08 08:38:45,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aefa46ea3/6aaefff4e63f47d1a84c2e51b7ee4aab/FLAG8fe93c85d [2025-02-08 08:38:45,877 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aefa46ea3/6aaefff4e63f47d1a84c2e51b7ee4aab [2025-02-08 08:38:45,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:38:45,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:38:45,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:38:45,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:38:45,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:38:45,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:38:45" (1/1) ... [2025-02-08 08:38:45,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2260278f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:45, skipping insertion in model container [2025-02-08 08:38:45,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:38:45" (1/1) ... [2025-02-08 08:38:45,908 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:38:46,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:38:46,076 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:38:46,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:38:46,118 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:38:46,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46 WrapperNode [2025-02-08 08:38:46,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:38:46,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:38:46,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:38:46,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:38:46,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,149 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2025-02-08 08:38:46,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:38:46,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:38:46,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:38:46,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:38:46,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,171 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]. [2025-02-08 08:38:46,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,175 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:38:46,179 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:38:46,179 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:38:46,180 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:38:46,180 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (1/1) ... [2025-02-08 08:38:46,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:38:46,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:38:46,207 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) [2025-02-08 08:38:46,209 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 [2025-02-08 08:38:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:38:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:38:46,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:38:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:38:46,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:38:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:38:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:38:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:38:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:38:46,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:38:46,231 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:38:46,297 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:38:46,299 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:38:46,465 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:38:46,465 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:38:46,588 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:38:46,588 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:38:46,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:38:46 BoogieIcfgContainer [2025-02-08 08:38:46,589 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:38:46,591 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:38:46,591 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:38:46,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:38:46,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:38:45" (1/3) ... [2025-02-08 08:38:46,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df5fc5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:38:46, skipping insertion in model container [2025-02-08 08:38:46,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:46" (2/3) ... [2025-02-08 08:38:46,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df5fc5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:38:46, skipping insertion in model container [2025-02-08 08:38:46,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:38:46" (3/3) ... [2025-02-08 08:38:46,598 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2025-02-08 08:38:46,613 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:38:46,615 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-threaded-sum-2.wvr.c that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:38:46,616 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:38:46,667 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 08:38:46,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 27 transitions, 68 flow [2025-02-08 08:38:46,734 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2025-02-08 08:38:46,739 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:38:46,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 2/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-02-08 08:38:46,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 27 transitions, 68 flow [2025-02-08 08:38:46,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 60 flow [2025-02-08 08:38:46,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:38:46,765 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;@3e74cfa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:38:46,765 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 08:38:46,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:38:46,774 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2025-02-08 08:38:46,774 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:38:46,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:46,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:38:46,776 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:38:46,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:46,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1890097139, now seen corresponding path program 1 times [2025-02-08 08:38:46,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:46,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188986710] [2025-02-08 08:38:46,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:38:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:46,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:38:46,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:38:46,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:46,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:47,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:47,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188986710] [2025-02-08 08:38:47,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188986710] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:38:47,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:38:47,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:38:47,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68189304] [2025-02-08 08:38:47,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:38:47,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:38:47,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:47,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:38:47,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:38:47,365 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 08:38:47,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2025-02-08 08:38:47,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:47,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 08:38:47,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:47,564 INFO L124 PetriNetUnfolderBase]: 120/234 cut-off events. [2025-02-08 08:38:47,564 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-02-08 08:38:47,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 234 events. 120/234 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 867 event pairs, 9 based on Foata normal form. 17/249 useless extension candidates. Maximal degree in co-relation 425. Up to 134 conditions per place. [2025-02-08 08:38:47,568 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 35 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2025-02-08 08:38:47,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 195 flow [2025-02-08 08:38:47,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:38:47,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:38:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2025-02-08 08:38:47,581 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2025-02-08 08:38:47,582 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 5 states and 84 transitions. [2025-02-08 08:38:47,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 195 flow [2025-02-08 08:38:47,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 46 transitions, 181 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 08:38:47,588 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 93 flow [2025-02-08 08:38:47,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2025-02-08 08:38:47,595 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2025-02-08 08:38:47,596 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 93 flow [2025-02-08 08:38:47,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2025-02-08 08:38:47,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:47,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:38:47,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:38:47,598 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:38:47,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash 911274554, now seen corresponding path program 1 times [2025-02-08 08:38:47,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:47,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713073995] [2025-02-08 08:38:47,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:38:47,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:47,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 08:38:47,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 08:38:47,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:47,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:38:47,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:47,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713073995] [2025-02-08 08:38:47,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713073995] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:38:47,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:38:47,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:38:47,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132905964] [2025-02-08 08:38:47,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:38:47,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:38:47,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:47,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:38:47,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:38:47,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 08:38:47,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2025-02-08 08:38:47,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:47,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 08:38:47,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:48,018 INFO L124 PetriNetUnfolderBase]: 146/290 cut-off events. [2025-02-08 08:38:48,018 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2025-02-08 08:38:48,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 290 events. 146/290 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1186 event pairs, 15 based on Foata normal form. 13/299 useless extension candidates. Maximal degree in co-relation 251. Up to 144 conditions per place. [2025-02-08 08:38:48,024 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 36 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2025-02-08 08:38:48,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 243 flow [2025-02-08 08:38:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:38:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:38:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2025-02-08 08:38:48,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-02-08 08:38:48,027 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 93 flow. Second operand 4 states and 64 transitions. [2025-02-08 08:38:48,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 243 flow [2025-02-08 08:38:48,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:38:48,032 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 104 flow [2025-02-08 08:38:48,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2025-02-08 08:38:48,034 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2025-02-08 08:38:48,034 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 104 flow [2025-02-08 08:38:48,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2025-02-08 08:38:48,035 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:48,035 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:38:48,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:38:48,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:38:48,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:48,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1206266606, now seen corresponding path program 1 times [2025-02-08 08:38:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:48,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096070910] [2025-02-08 08:38:48,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:38:48,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:48,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:38:48,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:38:48,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:48,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:48,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096070910] [2025-02-08 08:38:48,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096070910] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:38:48,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:38:48,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:38:48,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368831786] [2025-02-08 08:38:48,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:38:48,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:38:48,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:48,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:38:48,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:38:48,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 08:38:48,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2025-02-08 08:38:48,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:48,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 08:38:48,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:48,336 INFO L124 PetriNetUnfolderBase]: 156/301 cut-off events. [2025-02-08 08:38:48,336 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2025-02-08 08:38:48,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 301 events. 156/301 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1207 event pairs, 23 based on Foata normal form. 16/315 useless extension candidates. Maximal degree in co-relation 364. Up to 109 conditions per place. [2025-02-08 08:38:48,339 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 34 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2025-02-08 08:38:48,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 253 flow [2025-02-08 08:38:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:38:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:38:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2025-02-08 08:38:48,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2025-02-08 08:38:48,341 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 104 flow. Second operand 5 states and 78 transitions. [2025-02-08 08:38:48,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 253 flow [2025-02-08 08:38:48,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:38:48,343 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 150 flow [2025-02-08 08:38:48,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2025-02-08 08:38:48,344 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2025-02-08 08:38:48,344 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 150 flow [2025-02-08 08:38:48,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2025-02-08 08:38:48,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:48,345 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:38:48,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:38:48,345 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:38:48,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1850878134, now seen corresponding path program 2 times [2025-02-08 08:38:48,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:48,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645420201] [2025-02-08 08:38:48,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:38:48,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:48,352 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:38:48,377 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:38:48,378 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:38:48,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:48,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645420201] [2025-02-08 08:38:48,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645420201] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:38:48,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:38:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:38:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696840034] [2025-02-08 08:38:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:38:48,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:38:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:48,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:38:48,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:38:48,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 08:38:48,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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) [2025-02-08 08:38:48,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:48,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 08:38:48,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:49,328 INFO L124 PetriNetUnfolderBase]: 241/457 cut-off events. [2025-02-08 08:38:49,329 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2025-02-08 08:38:49,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 457 events. 241/457 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1920 event pairs, 14 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 557. Up to 262 conditions per place. [2025-02-08 08:38:49,334 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 41 selfloop transitions, 14 changer transitions 9/69 dead transitions. [2025-02-08 08:38:49,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 69 transitions, 420 flow [2025-02-08 08:38:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:38:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 08:38:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2025-02-08 08:38:49,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-02-08 08:38:49,338 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 150 flow. Second operand 10 states and 141 transitions. [2025-02-08 08:38:49,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 69 transitions, 420 flow [2025-02-08 08:38:49,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:38:49,345 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 241 flow [2025-02-08 08:38:49,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=241, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2025-02-08 08:38:49,347 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2025-02-08 08:38:49,347 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 241 flow [2025-02-08 08:38:49,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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) [2025-02-08 08:38:49,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:49,347 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] [2025-02-08 08:38:49,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:38:49,348 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:38:49,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1054630783, now seen corresponding path program 1 times [2025-02-08 08:38:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:49,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476384951] [2025-02-08 08:38:49,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:38:49,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:49,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 08:38:49,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 08:38:49,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:49,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:49,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:49,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476384951] [2025-02-08 08:38:49,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476384951] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:38:49,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220147599] [2025-02-08 08:38:49,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:38:49,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:38:49,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:38:49,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:38:49,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:38:49,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 08:38:49,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 08:38:49,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:49,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:49,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:38:49,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:38:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:49,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:38:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:50,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220147599] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:38:50,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:38:50,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 12 [2025-02-08 08:38:50,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221675305] [2025-02-08 08:38:50,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:38:50,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 08:38:50,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:50,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 08:38:50,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-02-08 08:38:50,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 08:38:50,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 241 flow. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 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) [2025-02-08 08:38:50,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:50,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 08:38:50,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:51,006 INFO L124 PetriNetUnfolderBase]: 1054/1780 cut-off events. [2025-02-08 08:38:51,006 INFO L125 PetriNetUnfolderBase]: For 3236/3236 co-relation queries the response was YES. [2025-02-08 08:38:51,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 1780 events. 1054/1780 cut-off events. For 3236/3236 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8610 event pairs, 47 based on Foata normal form. 22/1801 useless extension candidates. Maximal degree in co-relation 5786. Up to 380 conditions per place. [2025-02-08 08:38:51,028 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 149 selfloop transitions, 89 changer transitions 0/241 dead transitions. [2025-02-08 08:38:51,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 241 transitions, 1699 flow [2025-02-08 08:38:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-08 08:38:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-08 08:38:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 380 transitions. [2025-02-08 08:38:51,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2025-02-08 08:38:51,036 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 241 flow. Second operand 30 states and 380 transitions. [2025-02-08 08:38:51,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 241 transitions, 1699 flow [2025-02-08 08:38:51,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 241 transitions, 1643 flow, removed 21 selfloop flow, removed 4 redundant places. [2025-02-08 08:38:51,056 INFO L231 Difference]: Finished difference. Result has 93 places, 126 transitions, 1088 flow [2025-02-08 08:38:51,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1088, PETRI_PLACES=93, PETRI_TRANSITIONS=126} [2025-02-08 08:38:51,059 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2025-02-08 08:38:51,059 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 126 transitions, 1088 flow [2025-02-08 08:38:51,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 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) [2025-02-08 08:38:51,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:51,060 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] [2025-02-08 08:38:51,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 08:38:51,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:38:51,261 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:38:51,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:51,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1948915415, now seen corresponding path program 2 times [2025-02-08 08:38:51,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:51,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532715308] [2025-02-08 08:38:51,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:38:51,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:51,268 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-08 08:38:51,297 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 08:38:51,297 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:38:51,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:52,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:52,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532715308] [2025-02-08 08:38:52,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532715308] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:38:52,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898173477] [2025-02-08 08:38:52,129 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:38:52,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:38:52,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:38:52,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:38:52,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:38:52,170 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-08 08:38:52,198 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 08:38:52,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:38:52,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:52,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 08:38:52,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:38:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:52,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:38:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:53,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898173477] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:38:53,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:38:53,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2025-02-08 08:38:53,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727585673] [2025-02-08 08:38:53,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:38:53,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 08:38:53,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:53,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 08:38:53,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2025-02-08 08:38:53,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-08 08:38:53,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 126 transitions, 1088 flow. Second operand has 22 states, 22 states have (on average 9.454545454545455) internal successors, (208), 22 states have internal predecessors, (208), 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) [2025-02-08 08:38:53,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:53,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-08 08:38:53,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:58,740 INFO L124 PetriNetUnfolderBase]: 1926/3543 cut-off events. [2025-02-08 08:38:58,741 INFO L125 PetriNetUnfolderBase]: For 25298/25298 co-relation queries the response was YES. [2025-02-08 08:38:58,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17527 conditions, 3543 events. 1926/3543 cut-off events. For 25298/25298 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 22288 event pairs, 21 based on Foata normal form. 15/3556 useless extension candidates. Maximal degree in co-relation 13395. Up to 923 conditions per place. [2025-02-08 08:38:58,785 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 271 selfloop transitions, 178 changer transitions 103/556 dead transitions. [2025-02-08 08:38:58,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 556 transitions, 5737 flow [2025-02-08 08:38:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-08 08:38:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-02-08 08:38:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 619 transitions. [2025-02-08 08:38:58,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49838969404186795 [2025-02-08 08:38:58,792 INFO L175 Difference]: Start difference. First operand has 93 places, 126 transitions, 1088 flow. Second operand 46 states and 619 transitions. [2025-02-08 08:38:58,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 556 transitions, 5737 flow [2025-02-08 08:38:58,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 556 transitions, 5071 flow, removed 325 selfloop flow, removed 4 redundant places. [2025-02-08 08:38:58,869 INFO L231 Difference]: Finished difference. Result has 157 places, 273 transitions, 2737 flow [2025-02-08 08:38:58,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2737, PETRI_PLACES=157, PETRI_TRANSITIONS=273} [2025-02-08 08:38:58,872 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2025-02-08 08:38:58,872 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 273 transitions, 2737 flow [2025-02-08 08:38:58,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.454545454545455) internal successors, (208), 22 states have internal predecessors, (208), 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) [2025-02-08 08:38:58,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:58,873 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:38:58,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 08:38:59,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:38:59,074 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:38:59,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:59,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1350187013, now seen corresponding path program 3 times [2025-02-08 08:38:59,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:59,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443589761] [2025-02-08 08:38:59,075 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:38:59,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:59,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-02-08 08:38:59,090 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 23 statements. [2025-02-08 08:38:59,091 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 08:38:59,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:38:59,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:59,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443589761] [2025-02-08 08:38:59,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443589761] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:38:59,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:38:59,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:38:59,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178968282] [2025-02-08 08:38:59,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:38:59,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:38:59,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:59,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:38:59,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:38:59,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 08:38:59,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 273 transitions, 2737 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:38:59,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:59,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 08:38:59,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:00,009 INFO L124 PetriNetUnfolderBase]: 1991/3798 cut-off events. [2025-02-08 08:39:00,010 INFO L125 PetriNetUnfolderBase]: For 29574/29759 co-relation queries the response was YES. [2025-02-08 08:39:00,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19526 conditions, 3798 events. 1991/3798 cut-off events. For 29574/29759 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 25769 event pairs, 259 based on Foata normal form. 58/3785 useless extension candidates. Maximal degree in co-relation 19275. Up to 1052 conditions per place. [2025-02-08 08:39:00,063 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 284 selfloop transitions, 175 changer transitions 0/484 dead transitions. [2025-02-08 08:39:00,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 484 transitions, 5777 flow [2025-02-08 08:39:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 08:39:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 08:39:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2025-02-08 08:39:00,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-02-08 08:39:00,065 INFO L175 Difference]: Start difference. First operand has 157 places, 273 transitions, 2737 flow. Second operand 7 states and 114 transitions. [2025-02-08 08:39:00,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 484 transitions, 5777 flow [2025-02-08 08:39:00,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 484 transitions, 5331 flow, removed 199 selfloop flow, removed 19 redundant places. [2025-02-08 08:39:00,200 INFO L231 Difference]: Finished difference. Result has 134 places, 378 transitions, 4229 flow [2025-02-08 08:39:00,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4229, PETRI_PLACES=134, PETRI_TRANSITIONS=378} [2025-02-08 08:39:00,201 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2025-02-08 08:39:00,201 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 378 transitions, 4229 flow [2025-02-08 08:39:00,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:39:00,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:00,202 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:00,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 08:39:00,202 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:39:00,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:00,203 INFO L85 PathProgramCache]: Analyzing trace with hash 346582957, now seen corresponding path program 4 times [2025-02-08 08:39:00,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:00,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226869422] [2025-02-08 08:39:00,205 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:39:00,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:00,210 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-08 08:39:00,224 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 08:39:00,224 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:39:00,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:39:00,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:00,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226869422] [2025-02-08 08:39:00,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226869422] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:39:00,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:39:00,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:39:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053720541] [2025-02-08 08:39:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:39:00,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:39:00,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:00,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:39:00,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:39:00,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-08 08:39:00,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 378 transitions, 4229 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2025-02-08 08:39:00,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:00,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-08 08:39:00,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:01,488 INFO L124 PetriNetUnfolderBase]: 3009/5317 cut-off events. [2025-02-08 08:39:01,489 INFO L125 PetriNetUnfolderBase]: For 46646/46910 co-relation queries the response was YES. [2025-02-08 08:39:01,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28922 conditions, 5317 events. 3009/5317 cut-off events. For 46646/46910 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 34347 event pairs, 54 based on Foata normal form. 148/5434 useless extension candidates. Maximal degree in co-relation 26420. Up to 1377 conditions per place. [2025-02-08 08:39:01,557 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 473 selfloop transitions, 232 changer transitions 0/729 dead transitions. [2025-02-08 08:39:01,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 729 transitions, 9407 flow [2025-02-08 08:39:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:39:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:39:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2025-02-08 08:39:01,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2025-02-08 08:39:01,560 INFO L175 Difference]: Start difference. First operand has 134 places, 378 transitions, 4229 flow. Second operand 9 states and 120 transitions. [2025-02-08 08:39:01,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 729 transitions, 9407 flow [2025-02-08 08:39:01,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 729 transitions, 9323 flow, removed 42 selfloop flow, removed 0 redundant places. [2025-02-08 08:39:01,734 INFO L231 Difference]: Finished difference. Result has 145 places, 504 transitions, 6897 flow [2025-02-08 08:39:01,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4143, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6897, PETRI_PLACES=145, PETRI_TRANSITIONS=504} [2025-02-08 08:39:01,735 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2025-02-08 08:39:01,736 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 504 transitions, 6897 flow [2025-02-08 08:39:01,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2025-02-08 08:39:01,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:01,736 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:01,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 08:39:01,736 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:39:01,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:01,737 INFO L85 PathProgramCache]: Analyzing trace with hash -576182116, now seen corresponding path program 3 times [2025-02-08 08:39:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:01,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081915819] [2025-02-08 08:39:01,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:39:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:01,742 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-02-08 08:39:01,762 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:39:01,762 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:39:01,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:39:02,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:02,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081915819] [2025-02-08 08:39:02,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081915819] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:39:02,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009243303] [2025-02-08 08:39:02,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:39:02,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:02,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:39:02,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:39:02,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:39:02,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-02-08 08:39:02,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:39:02,499 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:39:02,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:02,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 08:39:02,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:39:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:39:02,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:39:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:39:03,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009243303] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:39:03,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:39:03,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2025-02-08 08:39:03,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484948489] [2025-02-08 08:39:03,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:39:03,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:39:03,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:03,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:39:03,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:39:03,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 08:39:03,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 504 transitions, 6897 flow. Second operand has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 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) [2025-02-08 08:39:03,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:03,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 08:39:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:18,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:39:22,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:39:23,882 INFO L124 PetriNetUnfolderBase]: 6052/10317 cut-off events. [2025-02-08 08:39:23,882 INFO L125 PetriNetUnfolderBase]: For 114460/114460 co-relation queries the response was YES. [2025-02-08 08:39:23,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63776 conditions, 10317 events. 6052/10317 cut-off events. For 114460/114460 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 70142 event pairs, 125 based on Foata normal form. 14/10330 useless extension candidates. Maximal degree in co-relation 56831. Up to 3562 conditions per place. [2025-02-08 08:39:23,984 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 782 selfloop transitions, 530 changer transitions 81/1396 dead transitions. [2025-02-08 08:39:23,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 1396 transitions, 19912 flow [2025-02-08 08:39:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-02-08 08:39:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2025-02-08 08:39:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 745 transitions. [2025-02-08 08:39:23,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44504181600955794 [2025-02-08 08:39:23,992 INFO L175 Difference]: Start difference. First operand has 145 places, 504 transitions, 6897 flow. Second operand 62 states and 745 transitions. [2025-02-08 08:39:23,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 1396 transitions, 19912 flow [2025-02-08 08:39:24,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1396 transitions, 19832 flow, removed 37 selfloop flow, removed 2 redundant places. [2025-02-08 08:39:24,470 INFO L231 Difference]: Finished difference. Result has 246 places, 927 transitions, 14206 flow [2025-02-08 08:39:24,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6879, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=14206, PETRI_PLACES=246, PETRI_TRANSITIONS=927} [2025-02-08 08:39:24,472 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2025-02-08 08:39:24,472 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 927 transitions, 14206 flow [2025-02-08 08:39:24,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 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) [2025-02-08 08:39:24,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:24,473 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:24,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 08:39:24,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:24,674 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:39:24,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2102905082, now seen corresponding path program 4 times [2025-02-08 08:39:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903275220] [2025-02-08 08:39:24,674 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:39:24,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:24,679 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-02-08 08:39:24,707 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:39:24,707 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:39:24,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:39:25,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903275220] [2025-02-08 08:39:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903275220] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:39:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071566136] [2025-02-08 08:39:25,629 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:39:25,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:25,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:39:25,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:39:25,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:39:25,663 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-02-08 08:39:25,753 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:39:25,753 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:39:25,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:25,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 08:39:25,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:39:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:39:26,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:39:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:39:32,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071566136] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:39:32,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:39:32,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2025-02-08 08:39:32,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224685300] [2025-02-08 08:39:32,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:39:32,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 08:39:32,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:32,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 08:39:32,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=434, Unknown=1, NotChecked=0, Total=552 [2025-02-08 08:39:32,333 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-08 08:39:32,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 927 transitions, 14206 flow. Second operand has 24 states, 24 states have (on average 9.458333333333334) internal successors, (227), 24 states have internal predecessors, (227), 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) [2025-02-08 08:39:32,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:32,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-08 08:39:32,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:43,010 INFO L124 PetriNetUnfolderBase]: 6240/11112 cut-off events. [2025-02-08 08:39:43,010 INFO L125 PetriNetUnfolderBase]: For 188341/188389 co-relation queries the response was YES. [2025-02-08 08:39:43,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81018 conditions, 11112 events. 6240/11112 cut-off events. For 188341/188389 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 81553 event pairs, 63 based on Foata normal form. 60/11170 useless extension candidates. Maximal degree in co-relation 80839. Up to 4838 conditions per place. [2025-02-08 08:39:43,129 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 947 selfloop transitions, 491 changer transitions 76/1520 dead transitions. [2025-02-08 08:39:43,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1520 transitions, 25510 flow [2025-02-08 08:39:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-08 08:39:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2025-02-08 08:39:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 531 transitions. [2025-02-08 08:39:43,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2025-02-08 08:39:43,131 INFO L175 Difference]: Start difference. First operand has 246 places, 927 transitions, 14206 flow. Second operand 42 states and 531 transitions. [2025-02-08 08:39:43,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1520 transitions, 25510 flow [2025-02-08 08:39:44,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 1520 transitions, 24926 flow, removed 275 selfloop flow, removed 10 redundant places. [2025-02-08 08:39:44,529 INFO L231 Difference]: Finished difference. Result has 287 places, 1143 transitions, 18839 flow [2025-02-08 08:39:44,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=13755, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=18839, PETRI_PLACES=287, PETRI_TRANSITIONS=1143} [2025-02-08 08:39:44,531 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 258 predicate places. [2025-02-08 08:39:44,531 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 1143 transitions, 18839 flow [2025-02-08 08:39:44,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.458333333333334) internal successors, (227), 24 states have internal predecessors, (227), 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) [2025-02-08 08:39:44,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:44,531 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:44,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 08:39:44,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 08:39:44,732 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:39:44,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash -700273826, now seen corresponding path program 5 times [2025-02-08 08:39:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914130707] [2025-02-08 08:39:44,733 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:39:44,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:44,738 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-02-08 08:39:44,752 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 08:39:44,752 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 08:39:44,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 08:39:45,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914130707] [2025-02-08 08:39:45,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914130707] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:39:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162109864] [2025-02-08 08:39:45,354 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:39:45,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:45,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:39:45,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:39:45,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:39:45,392 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-02-08 08:39:45,485 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 08:39:45,486 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 08:39:45,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:45,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 08:39:45,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:39:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:39:46,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:39:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:39:46,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162109864] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:39:46,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:39:46,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2025-02-08 08:39:46,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920217471] [2025-02-08 08:39:46,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:39:46,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-08 08:39:46,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:46,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-08 08:39:46,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2025-02-08 08:39:46,663 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 08:39:46,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 1143 transitions, 18839 flow. Second operand has 29 states, 29 states have (on average 8.275862068965518) internal successors, (240), 29 states have internal predecessors, (240), 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) [2025-02-08 08:39:46,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:46,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 08:39:46,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:40:00,320 INFO L124 PetriNetUnfolderBase]: 11089/18759 cut-off events. [2025-02-08 08:40:00,320 INFO L125 PetriNetUnfolderBase]: For 360756/360756 co-relation queries the response was YES. [2025-02-08 08:40:00,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144012 conditions, 18759 events. 11089/18759 cut-off events. For 360756/360756 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 136620 event pairs, 160 based on Foata normal form. 22/18780 useless extension candidates. Maximal degree in co-relation 143794. Up to 3978 conditions per place. [2025-02-08 08:40:00,524 INFO L140 encePairwiseOnDemand]: 14/27 looper letters, 924 selfloop transitions, 1593 changer transitions 99/2619 dead transitions. [2025-02-08 08:40:00,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 2619 transitions, 47432 flow [2025-02-08 08:40:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2025-02-08 08:40:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2025-02-08 08:40:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 1301 transitions. [2025-02-08 08:40:00,528 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3949605343047966 [2025-02-08 08:40:00,530 INFO L175 Difference]: Start difference. First operand has 287 places, 1143 transitions, 18839 flow. Second operand 122 states and 1301 transitions. [2025-02-08 08:40:00,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 2619 transitions, 47432 flow [2025-02-08 08:40:03,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 2619 transitions, 46606 flow, removed 355 selfloop flow, removed 17 redundant places. [2025-02-08 08:40:03,669 INFO L231 Difference]: Finished difference. Result has 452 places, 2034 transitions, 39398 flow [2025-02-08 08:40:03,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=18483, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=801, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=122, PETRI_FLOW=39398, PETRI_PLACES=452, PETRI_TRANSITIONS=2034} [2025-02-08 08:40:03,670 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 423 predicate places. [2025-02-08 08:40:03,670 INFO L471 AbstractCegarLoop]: Abstraction has has 452 places, 2034 transitions, 39398 flow [2025-02-08 08:40:03,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.275862068965518) internal successors, (240), 29 states have internal predecessors, (240), 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) [2025-02-08 08:40:03,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:40:03,671 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:40:03,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:40:03,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-08 08:40:03,871 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:40:03,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:40:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash -512883803, now seen corresponding path program 5 times [2025-02-08 08:40:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:40:03,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781035531] [2025-02-08 08:40:03,872 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:40:03,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:40:03,881 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-02-08 08:40:03,903 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:40:03,903 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 08:40:03,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:40:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:40:04,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:40:04,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781035531] [2025-02-08 08:40:04,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781035531] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:40:04,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933809354] [2025-02-08 08:40:04,646 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:40:04,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:40:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:40:04,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:40:04,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:40:04,685 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-02-08 08:40:04,718 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:40:04,718 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 08:40:04,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:40:04,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:40:04,722 INFO L279 TraceCheckSpWp]: Computing forward predicates...