./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/bench-exp2x9.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/bench-exp2x9.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 af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:33:08,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:33:08,824 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:33:08,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:33:08,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:33:08,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:33:08,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:33:08,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:33:08,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:33:08,847 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:33:08,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:33:08,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:33:08,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:33:08,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:33:08,849 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:33:08,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:33:08,849 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:33:08,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:33:08,849 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:33:08,849 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:33:08,850 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:33:08,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:33:08,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:33:08,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:33:08,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:33:08,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:33:08,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:33:08,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:33:08,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:33:08,852 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:33:08,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:33:08,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:33:08,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:33:08,852 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 -> af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 [2025-02-08 08:33:09,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:33:09,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:33:09,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:33:09,091 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:33:09,091 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:33:09,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2025-02-08 08:33:10,262 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff2c2f715/aa761a1b429644f98cf3952027d649c7/FLAGdba9f93ca [2025-02-08 08:33:10,486 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:33:10,486 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2025-02-08 08:33:10,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff2c2f715/aa761a1b429644f98cf3952027d649c7/FLAGdba9f93ca [2025-02-08 08:33:10,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff2c2f715/aa761a1b429644f98cf3952027d649c7 [2025-02-08 08:33:10,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:33:10,846 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:33:10,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:33:10,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:33:10,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:33:10,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:33:10" (1/1) ... [2025-02-08 08:33:10,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e55661d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:10, skipping insertion in model container [2025-02-08 08:33:10,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:33:10" (1/1) ... [2025-02-08 08:33:10,871 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:33:10,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:33:11,008 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:33:11,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:33:11,048 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:33:11,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11 WrapperNode [2025-02-08 08:33:11,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:33:11,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:33:11,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:33:11,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:33:11,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,079 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2025-02-08 08:33:11,081 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:33:11,082 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:33:11,082 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:33:11,082 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:33:11,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,107 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 08:33:11,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,109 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,113 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:33:11,126 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:33:11,126 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:33:11,126 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:33:11,127 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (1/1) ... [2025-02-08 08:33:11,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:33:11,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:33:11,153 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 08:33:11,155 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 08:33:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:33:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:33:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:33:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:33:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:33:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:33:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:33:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 08:33:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 08:33:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:33:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:33:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:33:11,176 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 08:33:11,239 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:33:11,240 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:33:11,415 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:33:11,415 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:33:11,549 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:33:11,549 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:33:11,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:33:11 BoogieIcfgContainer [2025-02-08 08:33:11,550 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:33:11,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:33:11,551 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:33:11,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:33:11,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:33:10" (1/3) ... [2025-02-08 08:33:11,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af08ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:33:11, skipping insertion in model container [2025-02-08 08:33:11,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:33:11" (2/3) ... [2025-02-08 08:33:11,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af08ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:33:11, skipping insertion in model container [2025-02-08 08:33:11,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:33:11" (3/3) ... [2025-02-08 08:33:11,560 INFO L128 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2025-02-08 08:33:11,571 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:33:11,572 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp2x9.wvr.c that has 5 procedures, 31 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-02-08 08:33:11,572 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:33:11,618 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 08:33:11,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 96 flow [2025-02-08 08:33:11,667 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2025-02-08 08:33:11,669 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:33:11,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-02-08 08:33:11,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 96 flow [2025-02-08 08:33:11,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 29 transitions, 82 flow [2025-02-08 08:33:11,682 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:33:11,691 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;@360da9f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:33:11,693 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 08:33:11,702 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:33:11,703 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-02-08 08:33:11,703 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:33:11,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:11,703 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:11,704 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:11,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 345285391, now seen corresponding path program 1 times [2025-02-08 08:33:11,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:11,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081534359] [2025-02-08 08:33:11,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:33:11,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:11,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 08:33:11,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 08:33:11,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:33:11,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:12,081 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 08:33:12,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:12,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081534359] [2025-02-08 08:33:12,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081534359] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:33:12,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:33:12,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:33:12,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493051390] [2025-02-08 08:33:12,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:33:12,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:33:12,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:33:12,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:33:12,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:33:12,110 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 08:33:12,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 08:33:12,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:33:12,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 08:33:12,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:33:12,329 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2025-02-08 08:33:12,329 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2025-02-08 08:33:12,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5592 event pairs, 123 based on Foata normal form. 2/997 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2025-02-08 08:33:12,343 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2025-02-08 08:33:12,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2025-02-08 08:33:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:33:12,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:33:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-02-08 08:33:12,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2025-02-08 08:33:12,355 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 73 transitions. [2025-02-08 08:33:12,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2025-02-08 08:33:12,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-08 08:33:12,365 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2025-02-08 08:33:12,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2025-02-08 08:33:12,370 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2025-02-08 08:33:12,372 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2025-02-08 08:33:12,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 08:33:12,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:12,372 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:12,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:33:12,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:12,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:12,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1561218853, now seen corresponding path program 1 times [2025-02-08 08:33:12,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:12,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624121357] [2025-02-08 08:33:12,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:33:12,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:12,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 08:33:12,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:12,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:33:12,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:12,496 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 08:33:12,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:12,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624121357] [2025-02-08 08:33:12,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624121357] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:33:12,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:33:12,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:33:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000805359] [2025-02-08 08:33:12,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:33:12,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:33:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:33:12,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:33:12,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:33:12,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 08:33:12,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 08:33:12,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:33:12,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 08:33:12,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:33:12,714 INFO L124 PetriNetUnfolderBase]: 1581/2026 cut-off events. [2025-02-08 08:33:12,714 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2025-02-08 08:33:12,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 2026 events. 1581/2026 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7020 event pairs, 95 based on Foata normal form. 46/2066 useless extension candidates. Maximal degree in co-relation 1272. Up to 830 conditions per place. [2025-02-08 08:33:12,728 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 65 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2025-02-08 08:33:12,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 80 transitions, 387 flow [2025-02-08 08:33:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:33:12,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:33:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2025-02-08 08:33:12,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-02-08 08:33:12,732 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 119 transitions. [2025-02-08 08:33:12,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 80 transitions, 387 flow [2025-02-08 08:33:12,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 80 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:33:12,734 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2025-02-08 08:33:12,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2025-02-08 08:33:12,736 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2025-02-08 08:33:12,736 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2025-02-08 08:33:12,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 08:33:12,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:12,737 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:12,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:33:12,737 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:12,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash -34980579, now seen corresponding path program 1 times [2025-02-08 08:33:12,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:12,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140109148] [2025-02-08 08:33:12,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:33:12,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:12,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 08:33:12,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:12,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:33:12,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:12,832 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 08:33:12,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:12,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140109148] [2025-02-08 08:33:12,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140109148] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:33:12,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707627892] [2025-02-08 08:33:12,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:33:12,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:33:12,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:33:12,834 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 08:33:12,837 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 08:33:12,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 08:33:12,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:12,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:33:12,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:12,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:33:12,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:33:13,033 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 08:33:13,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:33:13,092 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 08:33:13,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707627892] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:33:13,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:33:13,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-08 08:33:13,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656325234] [2025-02-08 08:33:13,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:33:13,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:33:13,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:33:13,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:33:13,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:33:13,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 08:33:13,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 08:33:13,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:33:13,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 08:33:13,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:33:13,337 INFO L124 PetriNetUnfolderBase]: 1907/2535 cut-off events. [2025-02-08 08:33:13,337 INFO L125 PetriNetUnfolderBase]: For 3287/3290 co-relation queries the response was YES. [2025-02-08 08:33:13,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7850 conditions, 2535 events. 1907/2535 cut-off events. For 3287/3290 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10097 event pairs, 284 based on Foata normal form. 64/2572 useless extension candidates. Maximal degree in co-relation 3599. Up to 1049 conditions per place. [2025-02-08 08:33:13,348 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 79 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2025-02-08 08:33:13,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 92 transitions, 571 flow [2025-02-08 08:33:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:33:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:33:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2025-02-08 08:33:13,349 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6647058823529411 [2025-02-08 08:33:13,349 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 113 transitions. [2025-02-08 08:33:13,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 92 transitions, 571 flow [2025-02-08 08:33:13,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 92 transitions, 571 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:33:13,352 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 210 flow [2025-02-08 08:33:13,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2025-02-08 08:33:13,352 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2025-02-08 08:33:13,354 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 210 flow [2025-02-08 08:33:13,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 08:33:13,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:13,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:13,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:33:13,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:33:13,559 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:13,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1638069477, now seen corresponding path program 1 times [2025-02-08 08:33:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:13,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553592119] [2025-02-08 08:33:13,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:33:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:13,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 08:33:13,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:13,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:33:13,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:13,647 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 08:33:13,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:13,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553592119] [2025-02-08 08:33:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553592119] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:33:13,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031507202] [2025-02-08 08:33:13,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:33:13,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:33:13,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:33:13,650 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 08:33:13,651 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 08:33:13,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 08:33:13,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:13,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:33:13,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:13,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:33:13,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:33:13,774 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 08:33:13,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:33:13,813 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 08:33:13,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031507202] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:33:13,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:33:13,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-08 08:33:13,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871742837] [2025-02-08 08:33:13,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:33:13,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:33:13,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:33:13,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:33:13,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:33:13,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 08:33:13,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 08:33:13,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:33:13,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 08:33:13,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:33:14,104 INFO L124 PetriNetUnfolderBase]: 2058/2787 cut-off events. [2025-02-08 08:33:14,104 INFO L125 PetriNetUnfolderBase]: For 4788/4788 co-relation queries the response was YES. [2025-02-08 08:33:14,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 2787 events. 2058/2787 cut-off events. For 4788/4788 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12109 event pairs, 434 based on Foata normal form. 90/2866 useless extension candidates. Maximal degree in co-relation 5289. Up to 1360 conditions per place. [2025-02-08 08:33:14,120 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 87 selfloop transitions, 10 changer transitions 0/102 dead transitions. [2025-02-08 08:33:14,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 102 transitions, 670 flow [2025-02-08 08:33:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:33:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:33:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2025-02-08 08:33:14,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7235294117647059 [2025-02-08 08:33:14,121 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 210 flow. Second operand 5 states and 123 transitions. [2025-02-08 08:33:14,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 102 transitions, 670 flow [2025-02-08 08:33:14,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 102 transitions, 670 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:33:14,130 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 266 flow [2025-02-08 08:33:14,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2025-02-08 08:33:14,131 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2025-02-08 08:33:14,131 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 266 flow [2025-02-08 08:33:14,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 08:33:14,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:14,131 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:14,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:33:14,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:33:14,332 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:14,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1444599349, now seen corresponding path program 2 times [2025-02-08 08:33:14,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:14,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243411726] [2025-02-08 08:33:14,332 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:33:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:14,337 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 08:33:14,346 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:14,349 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:33:14,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:14,408 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 08:33:14,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:14,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243411726] [2025-02-08 08:33:14,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243411726] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:33:14,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:33:14,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:33:14,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047920005] [2025-02-08 08:33:14,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:33:14,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:33:14,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:33:14,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:33:14,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:33:14,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 08:33:14,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 08:33:14,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:33:14,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 08:33:14,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:33:14,623 INFO L124 PetriNetUnfolderBase]: 1859/2509 cut-off events. [2025-02-08 08:33:14,623 INFO L125 PetriNetUnfolderBase]: For 6839/6849 co-relation queries the response was YES. [2025-02-08 08:33:14,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10125 conditions, 2509 events. 1859/2509 cut-off events. For 6839/6849 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9968 event pairs, 108 based on Foata normal form. 38/2527 useless extension candidates. Maximal degree in co-relation 6149. Up to 1056 conditions per place. [2025-02-08 08:33:14,638 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 92 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2025-02-08 08:33:14,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 108 transitions, 859 flow [2025-02-08 08:33:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:33:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:33:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2025-02-08 08:33:14,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2025-02-08 08:33:14,639 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 266 flow. Second operand 5 states and 112 transitions. [2025-02-08 08:33:14,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 108 transitions, 859 flow [2025-02-08 08:33:14,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 108 transitions, 830 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-02-08 08:33:14,646 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 316 flow [2025-02-08 08:33:14,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-02-08 08:33:14,647 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2025-02-08 08:33:14,647 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 316 flow [2025-02-08 08:33:14,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 08:33:14,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:14,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:14,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:33:14,648 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:14,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1763061211, now seen corresponding path program 1 times [2025-02-08 08:33:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361229223] [2025-02-08 08:33:14,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:33:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:14,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 08:33:14,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:14,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:33:14,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:14,713 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 08:33:14,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:14,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361229223] [2025-02-08 08:33:14,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361229223] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:33:14,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:33:14,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:33:14,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509075269] [2025-02-08 08:33:14,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:33:14,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:33:14,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:33:14,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:33:14,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:33:14,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 08:33:14,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 08:33:14,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:33:14,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 08:33:14,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:33:14,916 INFO L124 PetriNetUnfolderBase]: 1819/2469 cut-off events. [2025-02-08 08:33:14,916 INFO L125 PetriNetUnfolderBase]: For 7211/7220 co-relation queries the response was YES. [2025-02-08 08:33:14,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10647 conditions, 2469 events. 1819/2469 cut-off events. For 7211/7220 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9945 event pairs, 82 based on Foata normal form. 41/2490 useless extension candidates. Maximal degree in co-relation 6522. Up to 1147 conditions per place. [2025-02-08 08:33:14,937 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 90 selfloop transitions, 8 changer transitions 2/105 dead transitions. [2025-02-08 08:33:14,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 105 transitions, 839 flow [2025-02-08 08:33:14,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:33:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:33:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-02-08 08:33:14,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2025-02-08 08:33:14,938 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 316 flow. Second operand 5 states and 110 transitions. [2025-02-08 08:33:14,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 105 transitions, 839 flow [2025-02-08 08:33:14,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 105 transitions, 828 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-08 08:33:14,946 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 319 flow [2025-02-08 08:33:14,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2025-02-08 08:33:14,947 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2025-02-08 08:33:14,948 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 319 flow [2025-02-08 08:33:14,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 08:33:14,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:14,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:14,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 08:33:14,949 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:14,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:14,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1094375929, now seen corresponding path program 2 times [2025-02-08 08:33:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:14,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455144983] [2025-02-08 08:33:14,949 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:33:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:14,954 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 08:33:14,958 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:14,959 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:33:14,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:15,019 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 08:33:15,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:15,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455144983] [2025-02-08 08:33:15,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455144983] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:33:15,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527170151] [2025-02-08 08:33:15,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:33:15,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:33:15,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:33:15,022 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 08:33:15,024 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 08:33:15,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 08:33:15,073 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:15,074 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:33:15,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:15,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:33:15,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:33:15,199 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 08:33:15,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:33:15,248 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 08:33:15,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527170151] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:33:15,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:33:15,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-08 08:33:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711056268] [2025-02-08 08:33:15,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:33:15,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:33:15,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:33:15,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:33:15,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:33:15,250 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 08:33:15,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 08:33:15,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:33:15,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 08:33:15,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:33:15,487 INFO L124 PetriNetUnfolderBase]: 1745/2409 cut-off events. [2025-02-08 08:33:15,487 INFO L125 PetriNetUnfolderBase]: For 7550/7559 co-relation queries the response was YES. [2025-02-08 08:33:15,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10700 conditions, 2409 events. 1745/2409 cut-off events. For 7550/7559 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10212 event pairs, 303 based on Foata normal form. 75/2464 useless extension candidates. Maximal degree in co-relation 6553. Up to 1314 conditions per place. [2025-02-08 08:33:15,499 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2025-02-08 08:33:15,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 859 flow [2025-02-08 08:33:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:33:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:33:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-02-08 08:33:15,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2025-02-08 08:33:15,501 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 319 flow. Second operand 5 states and 108 transitions. [2025-02-08 08:33:15,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 859 flow [2025-02-08 08:33:15,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 846 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-08 08:33:15,509 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 359 flow [2025-02-08 08:33:15,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2025-02-08 08:33:15,510 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2025-02-08 08:33:15,510 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 359 flow [2025-02-08 08:33:15,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 08:33:15,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:15,511 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:15,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:33:15,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:33:15,716 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:15,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:15,716 INFO L85 PathProgramCache]: Analyzing trace with hash 442118651, now seen corresponding path program 2 times [2025-02-08 08:33:15,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:15,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805235074] [2025-02-08 08:33:15,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:33:15,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:15,727 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 08:33:15,734 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:15,736 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:33:15,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:15,774 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 08:33:15,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:15,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805235074] [2025-02-08 08:33:15,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805235074] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:33:15,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:33:15,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:33:15,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632048365] [2025-02-08 08:33:15,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:33:15,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:33:15,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:33:15,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:33:15,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:33:15,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 08:33:15,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 08:33:15,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:33:15,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 08:33:15,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:33:15,964 INFO L124 PetriNetUnfolderBase]: 1515/2042 cut-off events. [2025-02-08 08:33:15,964 INFO L125 PetriNetUnfolderBase]: For 7244/7244 co-relation queries the response was YES. [2025-02-08 08:33:15,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9624 conditions, 2042 events. 1515/2042 cut-off events. For 7244/7244 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8055 event pairs, 89 based on Foata normal form. 34/2072 useless extension candidates. Maximal degree in co-relation 8506. Up to 864 conditions per place. [2025-02-08 08:33:15,974 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 108 selfloop transitions, 9 changer transitions 4/126 dead transitions. [2025-02-08 08:33:15,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 126 transitions, 1072 flow [2025-02-08 08:33:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:33:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:33:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2025-02-08 08:33:15,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-02-08 08:33:15,976 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 359 flow. Second operand 5 states and 119 transitions. [2025-02-08 08:33:15,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 126 transitions, 1072 flow [2025-02-08 08:33:15,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 126 transitions, 1014 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-02-08 08:33:15,987 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 354 flow [2025-02-08 08:33:15,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2025-02-08 08:33:15,987 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2025-02-08 08:33:15,987 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 354 flow [2025-02-08 08:33:15,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 08:33:15,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:15,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:15,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 08:33:15,988 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:15,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:15,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1519069569, now seen corresponding path program 2 times [2025-02-08 08:33:15,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:15,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889834340] [2025-02-08 08:33:15,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:33:15,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:15,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 08:33:15,999 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:16,000 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:33:16,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:16,052 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 08:33:16,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:16,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889834340] [2025-02-08 08:33:16,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889834340] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:33:16,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160530509] [2025-02-08 08:33:16,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:33:16,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:33:16,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:33:16,055 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 08:33:16,062 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 08:33:16,099 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 08:33:16,114 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:33:16,114 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:33:16,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:16,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:33:16,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:33:16,217 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 08:33:16,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:33:16,271 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 08:33:16,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160530509] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:33:16,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:33:16,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-08 08:33:16,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54666450] [2025-02-08 08:33:16,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:33:16,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:33:16,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:33:16,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:33:16,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:33:16,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 08:33:16,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 08:33:16,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:33:16,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 08:33:16,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:33:16,503 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2025-02-08 08:33:16,503 INFO L125 PetriNetUnfolderBase]: For 6858/6858 co-relation queries the response was YES. [2025-02-08 08:33:16,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 1987 events. 1447/1987 cut-off events. For 6858/6858 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8175 event pairs, 375 based on Foata normal form. 68/2044 useless extension candidates. Maximal degree in co-relation 8390. Up to 1150 conditions per place. [2025-02-08 08:33:16,515 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2025-02-08 08:33:16,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 1043 flow [2025-02-08 08:33:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:33:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:33:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-02-08 08:33:16,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2025-02-08 08:33:16,517 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 354 flow. Second operand 5 states and 116 transitions. [2025-02-08 08:33:16,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 1043 flow [2025-02-08 08:33:16,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1036 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:33:16,525 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 401 flow [2025-02-08 08:33:16,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2025-02-08 08:33:16,525 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2025-02-08 08:33:16,526 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 401 flow [2025-02-08 08:33:16,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 08:33:16,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:33:16,527 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:33:16,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 08:33:16,731 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,SelfDestructingSolverStorable8 [2025-02-08 08:33:16,731 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:33:16,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:33:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1766636015, now seen corresponding path program 1 times [2025-02-08 08:33:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:33:16,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832774253] [2025-02-08 08:33:16,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:33:16,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:33:16,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 08:33:16,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:33:16,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:33:16,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:17,127 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 08:33:17,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:33:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832774253] [2025-02-08 08:33:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832774253] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:33:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90651700] [2025-02-08 08:33:17,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:33:17,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:33:17,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:33:17,130 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 08:33:17,131 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 08:33:17,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 08:33:17,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:33:17,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:33:17,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:33:17,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 08:33:17,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:34:38,140 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 34 DAG size of output: 33 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)