./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/exponential-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/pthread-theta/exponential-nondet.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'f87ddde6d61a5d434f69c49dc65eaf95f54327ebb0ef5acca382e4d4744605ae'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/exponential-nondet.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f87ddde6d61a5d434f69c49dc65eaf95f54327ebb0ef5acca382e4d4744605ae --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:41:58,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:41:58,932 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:41:58,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:41:58,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:41:58,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:41:58,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:41:58,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:41:58,974 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:41:58,974 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:41:58,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:41:58,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:41:58,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:41:58,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:41:58,975 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:41:58,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:41:58,975 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:41:58,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:41:58,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:41:58,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:41:58,975 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:41:58,975 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:41:58,975 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:41:58,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:41:58,976 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:41:58,976 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:41:58,976 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:41:58,976 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:41:58,976 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:41:58,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:41:58,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:41:58,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:41:58,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:41:58,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:41:58,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:41:58,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:41:58,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:41:58,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:41:58,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:41:58,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:41:58,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:41:58,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:41:58,981 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 -> f87ddde6d61a5d434f69c49dc65eaf95f54327ebb0ef5acca382e4d4744605ae [2024-11-07 19:41:59,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:41:59,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:41:59,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:41:59,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:41:59,296 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:41:59,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-nondet.i [2024-11-07 19:42:00,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:42:00,942 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:42:00,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-nondet.i [2024-11-07 19:42:00,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d098435c4/ce2e118b8fa74d219f597c706a8e7a4a/FLAG9d29c02c3 [2024-11-07 19:42:00,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d098435c4/ce2e118b8fa74d219f597c706a8e7a4a [2024-11-07 19:42:00,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:42:00,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:42:00,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:42:00,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:42:01,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:42:01,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:42:00" (1/1) ... [2024-11-07 19:42:01,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4ae57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01, skipping insertion in model container [2024-11-07 19:42:01,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:42:00" (1/1) ... [2024-11-07 19:42:01,043 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:42:01,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:42:01,345 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:42:01,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:42:01,429 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:42:01,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01 WrapperNode [2024-11-07 19:42:01,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:42:01,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:42:01,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:42:01,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:42:01,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,480 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-11-07 19:42:01,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:42:01,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:42:01,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:42:01,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:42:01,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,494 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,515 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]. [2024-11-07 19:42:01,515 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:42:01,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:42:01,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:42:01,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:42:01,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (1/1) ... [2024-11-07 19:42:01,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:42:01,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:01,580 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) [2024-11-07 19:42:01,585 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 [2024-11-07 19:42:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:42:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-07 19:42:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-07 19:42:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-07 19:42:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-07 19:42:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:42:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:42:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:42:01,610 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 19:42:01,756 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:42:01,758 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:42:01,967 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:42:01,967 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:42:02,054 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:42:02,055 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 19:42:02,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:42:02 BoogieIcfgContainer [2024-11-07 19:42:02,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:42:02,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:42:02,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:42:02,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:42:02,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:42:00" (1/3) ... [2024-11-07 19:42:02,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206070df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:42:02, skipping insertion in model container [2024-11-07 19:42:02,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:01" (2/3) ... [2024-11-07 19:42:02,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206070df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:42:02, skipping insertion in model container [2024-11-07 19:42:02,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:42:02" (3/3) ... [2024-11-07 19:42:02,066 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-nondet.i [2024-11-07 19:42:02,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:42:02,094 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 19:42:02,094 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:42:02,138 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:02,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2024-11-07 19:42:02,216 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-07 19:42:02,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:02,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 40 events. 6/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2024-11-07 19:42:02,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2024-11-07 19:42:02,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 25 transitions, 57 flow [2024-11-07 19:42:02,243 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:02,256 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;@6446b7d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:02,256 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:02,268 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:02,268 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:02,268 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:02,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:02,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:02,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:02,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:02,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1636255911, now seen corresponding path program 1 times [2024-11-07 19:42:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:02,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123157793] [2024-11-07 19:42:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:02,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:02,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:02,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123157793] [2024-11-07 19:42:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123157793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:02,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:02,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:42:02,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899011389] [2024-11-07 19:42:02,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:02,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:02,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:02,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:02,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:02,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-07 19:42:02,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-11-07 19:42:02,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:02,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-07 19:42:02,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:02,648 INFO L124 PetriNetUnfolderBase]: 32/95 cut-off events. [2024-11-07 19:42:02,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:02,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 95 events. 32/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 393 event pairs, 27 based on Foata normal form. 15/92 useless extension candidates. Maximal degree in co-relation 146. Up to 70 conditions per place. [2024-11-07 19:42:02,653 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 11 selfloop transitions, 1 changer transitions 1/21 dead transitions. [2024-11-07 19:42:02,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 75 flow [2024-11-07 19:42:02,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-11-07 19:42:02,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-11-07 19:42:02,668 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 57 flow. Second operand 3 states and 43 transitions. [2024-11-07 19:42:02,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 75 flow [2024-11-07 19:42:02,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:02,677 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 48 flow [2024-11-07 19:42:02,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2024-11-07 19:42:02,684 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2024-11-07 19:42:02,685 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 48 flow [2024-11-07 19:42:02,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-11-07 19:42:02,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:02,685 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:02,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:42:02,686 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:02,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1636255272, now seen corresponding path program 1 times [2024-11-07 19:42:02,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:02,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849478367] [2024-11-07 19:42:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:02,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:42:02,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510991871] [2024-11-07 19:42:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:02,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:02,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:02,732 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) [2024-11-07 19:42:02,734 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 [2024-11-07 19:42:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:02,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 19:42:02,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:02,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849478367] [2024-11-07 19:42:02,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:42:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510991871] [2024-11-07 19:42:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510991871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:02,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:02,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:42:02,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613639530] [2024-11-07 19:42:02,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:02,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:42:02,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:02,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:42:02,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:42:02,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-07 19:42:02,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-07 19:42:02,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:02,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-07 19:42:02,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:03,015 INFO L124 PetriNetUnfolderBase]: 45/113 cut-off events. [2024-11-07 19:42:03,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:03,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 113 events. 45/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 423 event pairs, 7 based on Foata normal form. 7/102 useless extension candidates. Maximal degree in co-relation 212. Up to 65 conditions per place. [2024-11-07 19:42:03,016 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 18 selfloop transitions, 2 changer transitions 5/32 dead transitions. [2024-11-07 19:42:03,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 124 flow [2024-11-07 19:42:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:42:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:42:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-07 19:42:03,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-07 19:42:03,020 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 48 flow. Second operand 5 states and 72 transitions. [2024-11-07 19:42:03,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 124 flow [2024-11-07 19:42:03,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 123 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:03,023 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 59 flow [2024-11-07 19:42:03,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2024-11-07 19:42:03,025 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-11-07 19:42:03,025 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 59 flow [2024-11-07 19:42:03,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-07 19:42:03,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:03,025 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:03,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 19:42:03,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:03,226 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:03,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:03,227 INFO L85 PathProgramCache]: Analyzing trace with hash -635828590, now seen corresponding path program 1 times [2024-11-07 19:42:03,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:03,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725737803] [2024-11-07 19:42:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:03,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:03,255 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:03,291 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:03,292 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:03,293 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:42:03,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:42:03,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:42:03,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:42:03,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:42:03,295 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-07 19:42:03,298 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:42:03,299 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 19:42:03,323 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:03,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 90 flow [2024-11-07 19:42:03,336 INFO L124 PetriNetUnfolderBase]: 9/64 cut-off events. [2024-11-07 19:42:03,337 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 19:42:03,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 64 events. 9/64 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2024-11-07 19:42:03,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 90 flow [2024-11-07 19:42:03,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 33 transitions, 84 flow [2024-11-07 19:42:03,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:03,342 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;@6446b7d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:03,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:03,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:03,352 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:03,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:03,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:03,352 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:03,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:03,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash -600834951, now seen corresponding path program 1 times [2024-11-07 19:42:03,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:03,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524087961] [2024-11-07 19:42:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:03,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:03,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524087961] [2024-11-07 19:42:03,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524087961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:03,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:03,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:42:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401367777] [2024-11-07 19:42:03,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:03,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:03,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:03,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-11-07 19:42:03,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:03,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:03,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-11-07 19:42:03,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:03,585 INFO L124 PetriNetUnfolderBase]: 284/559 cut-off events. [2024-11-07 19:42:03,585 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-07 19:42:03,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 559 events. 284/559 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3203 event pairs, 263 based on Foata normal form. 63/540 useless extension candidates. Maximal degree in co-relation 434. Up to 450 conditions per place. [2024-11-07 19:42:03,593 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 15 selfloop transitions, 1 changer transitions 1/29 dead transitions. [2024-11-07 19:42:03,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 29 transitions, 110 flow [2024-11-07 19:42:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-07 19:42:03,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-11-07 19:42:03,597 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 84 flow. Second operand 3 states and 59 transitions. [2024-11-07 19:42:03,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 29 transitions, 110 flow [2024-11-07 19:42:03,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 29 transitions, 109 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:03,601 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 75 flow [2024-11-07 19:42:03,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-11-07 19:42:03,603 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2024-11-07 19:42:03,603 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 75 flow [2024-11-07 19:42:03,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:03,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:03,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:03,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:42:03,604 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:03,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash -600834312, now seen corresponding path program 1 times [2024-11-07 19:42:03,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:03,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751202144] [2024-11-07 19:42:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:03,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:42:03,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766986980] [2024-11-07 19:42:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:03,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:03,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:03,632 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) [2024-11-07 19:42:03,634 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 [2024-11-07 19:42:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:03,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 19:42:03,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:03,720 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:03,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:03,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751202144] [2024-11-07 19:42:03,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:42:03,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766986980] [2024-11-07 19:42:03,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766986980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:03,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:03,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:42:03,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50285025] [2024-11-07 19:42:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:03,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:42:03,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:03,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:42:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:42:03,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-07 19:42:03,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-07 19:42:03,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:03,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-07 19:42:03,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:03,973 INFO L124 PetriNetUnfolderBase]: 649/1085 cut-off events. [2024-11-07 19:42:03,973 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-07 19:42:03,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 1085 events. 649/1085 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5827 event pairs, 135 based on Foata normal form. 43/1028 useless extension candidates. Maximal degree in co-relation 2140. Up to 821 conditions per place. [2024-11-07 19:42:03,985 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 27 selfloop transitions, 3 changer transitions 11/51 dead transitions. [2024-11-07 19:42:03,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 215 flow [2024-11-07 19:42:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:42:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:42:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-07 19:42:03,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2024-11-07 19:42:03,989 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 75 flow. Second operand 5 states and 103 transitions. [2024-11-07 19:42:03,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 215 flow [2024-11-07 19:42:03,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:03,990 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 101 flow [2024-11-07 19:42:03,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2024-11-07 19:42:03,993 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-11-07 19:42:03,993 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 101 flow [2024-11-07 19:42:03,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-07 19:42:03,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:03,994 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:04,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 19:42:04,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:04,199 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:04,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1640172159, now seen corresponding path program 1 times [2024-11-07 19:42:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:04,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806485001] [2024-11-07 19:42:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:04,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:04,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:04,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:04,247 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:04,247 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:42:04,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:42:04,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:42:04,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:42:04,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 19:42:04,248 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-07 19:42:04,248 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:42:04,248 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 19:42:04,280 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:04,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 43 transitions, 122 flow [2024-11-07 19:42:04,292 INFO L124 PetriNetUnfolderBase]: 12/88 cut-off events. [2024-11-07 19:42:04,292 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-07 19:42:04,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 88 events. 12/88 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 208 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 85. Up to 8 conditions per place. [2024-11-07 19:42:04,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 43 transitions, 122 flow [2024-11-07 19:42:04,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 41 transitions, 115 flow [2024-11-07 19:42:04,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:04,295 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;@6446b7d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:04,295 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:04,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:04,299 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:04,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:04,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:04,299 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:04,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:04,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:04,300 INFO L85 PathProgramCache]: Analyzing trace with hash 671253657, now seen corresponding path program 1 times [2024-11-07 19:42:04,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:04,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666066205] [2024-11-07 19:42:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:04,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:04,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666066205] [2024-11-07 19:42:04,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666066205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:04,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:04,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:42:04,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996759319] [2024-11-07 19:42:04,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:04,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:04,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:04,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:04,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-07 19:42:04,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-07 19:42:04,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:04,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-07 19:42:04,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:04,667 INFO L124 PetriNetUnfolderBase]: 1804/2927 cut-off events. [2024-11-07 19:42:04,667 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-07 19:42:04,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5651 conditions, 2927 events. 1804/2927 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18321 event pairs, 1719 based on Foata normal form. 255/2845 useless extension candidates. Maximal degree in co-relation 2474. Up to 2482 conditions per place. [2024-11-07 19:42:04,691 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 19 selfloop transitions, 1 changer transitions 1/37 dead transitions. [2024-11-07 19:42:04,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 37 transitions, 149 flow [2024-11-07 19:42:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:04,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-07 19:42:04,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-07 19:42:04,693 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 115 flow. Second operand 3 states and 75 transitions. [2024-11-07 19:42:04,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 37 transitions, 149 flow [2024-11-07 19:42:04,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 37 transitions, 144 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:04,699 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 102 flow [2024-11-07 19:42:04,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2024-11-07 19:42:04,700 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-07 19:42:04,702 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 102 flow [2024-11-07 19:42:04,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-07 19:42:04,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:04,702 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:04,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:42:04,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:04,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash 671254296, now seen corresponding path program 1 times [2024-11-07 19:42:04,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:04,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328158474] [2024-11-07 19:42:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:04,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:42:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605465303] [2024-11-07 19:42:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:04,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:04,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:04,728 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) [2024-11-07 19:42:04,731 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 [2024-11-07 19:42:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:04,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 19:42:04,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:04,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:04,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:04,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328158474] [2024-11-07 19:42:04,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:42:04,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605465303] [2024-11-07 19:42:04,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605465303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:04,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:04,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:42:04,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018720284] [2024-11-07 19:42:04,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:04,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:42:04,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:04,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:42:04,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:42:04,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-07 19:42:04,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-07 19:42:04,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:04,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-07 19:42:04,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:05,642 INFO L124 PetriNetUnfolderBase]: 6345/8523 cut-off events. [2024-11-07 19:42:05,642 INFO L125 PetriNetUnfolderBase]: For 294/294 co-relation queries the response was YES. [2024-11-07 19:42:05,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17429 conditions, 8523 events. 6345/8523 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 42833 event pairs, 3873 based on Foata normal form. 259/8234 useless extension candidates. Maximal degree in co-relation 17418. Up to 7365 conditions per place. [2024-11-07 19:42:05,721 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 35 selfloop transitions, 4 changer transitions 16/68 dead transitions. [2024-11-07 19:42:05,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 298 flow [2024-11-07 19:42:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:42:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:42:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-07 19:42:05,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-11-07 19:42:05,727 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 102 flow. Second operand 5 states and 132 transitions. [2024-11-07 19:42:05,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 298 flow [2024-11-07 19:42:05,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:05,729 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 137 flow [2024-11-07 19:42:05,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2024-11-07 19:42:05,730 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-07 19:42:05,730 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 137 flow [2024-11-07 19:42:05,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-07 19:42:05,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:05,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:05,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 19:42:05,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:05,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:05,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1328448685, now seen corresponding path program 1 times [2024-11-07 19:42:05,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:05,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308843593] [2024-11-07 19:42:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:05,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:06,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308843593] [2024-11-07 19:42:06,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308843593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:06,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378763935] [2024-11-07 19:42:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:06,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:06,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:06,106 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) [2024-11-07 19:42:06,108 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 [2024-11-07 19:42:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:06,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:42:06,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:06,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:06,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378763935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:06,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:06,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-07 19:42:06,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077928307] [2024-11-07 19:42:06,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:06,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:42:06,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:42:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:42:06,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2024-11-07 19:42:06,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2024-11-07 19:42:06,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:06,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2024-11-07 19:42:06,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:06,841 INFO L124 PetriNetUnfolderBase]: 3536/5651 cut-off events. [2024-11-07 19:42:06,842 INFO L125 PetriNetUnfolderBase]: For 1228/1368 co-relation queries the response was YES. [2024-11-07 19:42:06,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12051 conditions, 5651 events. 3536/5651 cut-off events. For 1228/1368 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 39359 event pairs, 2825 based on Foata normal form. 156/5105 useless extension candidates. Maximal degree in co-relation 12036. Up to 3866 conditions per place. [2024-11-07 19:42:06,904 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 24 selfloop transitions, 4 changer transitions 2/49 dead transitions. [2024-11-07 19:42:06,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 217 flow [2024-11-07 19:42:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:42:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:42:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-07 19:42:06,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5627906976744186 [2024-11-07 19:42:06,906 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 137 flow. Second operand 5 states and 121 transitions. [2024-11-07 19:42:06,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 217 flow [2024-11-07 19:42:06,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 211 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:06,925 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 153 flow [2024-11-07 19:42:06,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2024-11-07 19:42:06,926 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2024-11-07 19:42:06,926 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 153 flow [2024-11-07 19:42:06,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2024-11-07 19:42:06,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:06,926 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:06,944 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 [2024-11-07 19:42:07,130 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 [2024-11-07 19:42:07,131 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:07,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2050149900, now seen corresponding path program 1 times [2024-11-07 19:42:07,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:07,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421518720] [2024-11-07 19:42:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:07,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:42:07,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153926833] [2024-11-07 19:42:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:07,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:07,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:07,202 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) [2024-11-07 19:42:07,212 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 [2024-11-07 19:42:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:07,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 19:42:07,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:07,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:07,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421518720] [2024-11-07 19:42:07,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:42:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153926833] [2024-11-07 19:42:07,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153926833] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:07,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:42:07,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-07 19:42:07,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927508361] [2024-11-07 19:42:07,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:07,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:42:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:42:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:42:07,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2024-11-07 19:42:07,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-11-07 19:42:07,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:07,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2024-11-07 19:42:07,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:08,104 INFO L124 PetriNetUnfolderBase]: 2883/4393 cut-off events. [2024-11-07 19:42:08,104 INFO L125 PetriNetUnfolderBase]: For 916/1104 co-relation queries the response was YES. [2024-11-07 19:42:08,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10136 conditions, 4393 events. 2883/4393 cut-off events. For 916/1104 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 28636 event pairs, 1513 based on Foata normal form. 264/4092 useless extension candidates. Maximal degree in co-relation 10119. Up to 1892 conditions per place. [2024-11-07 19:42:08,161 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 25 selfloop transitions, 1 changer transitions 8/50 dead transitions. [2024-11-07 19:42:08,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 235 flow [2024-11-07 19:42:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:42:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:42:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-07 19:42:08,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-11-07 19:42:08,163 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 153 flow. Second operand 4 states and 104 transitions. [2024-11-07 19:42:08,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 235 flow [2024-11-07 19:42:08,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 226 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:08,181 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 130 flow [2024-11-07 19:42:08,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2024-11-07 19:42:08,181 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-07 19:42:08,182 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 130 flow [2024-11-07 19:42:08,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-11-07 19:42:08,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:08,182 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:08,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 19:42:08,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-07 19:42:08,390 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:08,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1627166722, now seen corresponding path program 1 times [2024-11-07 19:42:08,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:08,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2463264] [2024-11-07 19:42:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:08,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:08,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:08,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:08,427 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:08,427 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:42:08,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:42:08,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:42:08,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:42:08,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 19:42:08,428 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 19:42:08,429 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:42:08,429 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-07 19:42:08,460 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:08,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 51 transitions, 158 flow [2024-11-07 19:42:08,475 INFO L124 PetriNetUnfolderBase]: 15/112 cut-off events. [2024-11-07 19:42:08,475 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-07 19:42:08,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 112 events. 15/112 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 295 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 119. Up to 10 conditions per place. [2024-11-07 19:42:08,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 51 transitions, 158 flow [2024-11-07 19:42:08,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 49 transitions, 150 flow [2024-11-07 19:42:08,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:08,477 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;@6446b7d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:08,477 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:08,480 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:08,481 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:08,481 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:08,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:08,481 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:08,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:08,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:08,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2114957383, now seen corresponding path program 1 times [2024-11-07 19:42:08,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:08,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581114093] [2024-11-07 19:42:08,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:08,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:08,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:08,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581114093] [2024-11-07 19:42:08,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581114093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:08,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:08,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:42:08,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628159700] [2024-11-07 19:42:08,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:08,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:08,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:08,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:08,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-11-07 19:42:08,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-07 19:42:08,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:08,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-11-07 19:42:08,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:09,845 INFO L124 PetriNetUnfolderBase]: 9932/14447 cut-off events. [2024-11-07 19:42:09,845 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-07 19:42:09,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28309 conditions, 14447 events. 9932/14447 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 94154 event pairs, 9591 based on Foata normal form. 1023/14108 useless extension candidates. Maximal degree in co-relation 12778. Up to 12658 conditions per place. [2024-11-07 19:42:09,972 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 23 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2024-11-07 19:42:09,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 45 transitions, 192 flow [2024-11-07 19:42:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-07 19:42:09,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2024-11-07 19:42:09,974 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 150 flow. Second operand 3 states and 91 transitions. [2024-11-07 19:42:09,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 45 transitions, 192 flow [2024-11-07 19:42:09,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 45 transitions, 179 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:09,985 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 129 flow [2024-11-07 19:42:09,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2024-11-07 19:42:09,986 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2024-11-07 19:42:09,987 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 129 flow [2024-11-07 19:42:09,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-07 19:42:09,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:09,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:09,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 19:42:09,988 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:09,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:09,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2114956744, now seen corresponding path program 1 times [2024-11-07 19:42:09,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:09,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654698107] [2024-11-07 19:42:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:09,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:42:10,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531670951] [2024-11-07 19:42:10,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:10,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:10,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:10,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:42:10,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 19:42:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:10,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 19:42:10,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:10,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654698107] [2024-11-07 19:42:10,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:42:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531670951] [2024-11-07 19:42:10,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531670951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:10,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:10,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:42:10,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236440113] [2024-11-07 19:42:10,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:10,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:42:10,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:10,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:42:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:42:10,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-11-07 19:42:10,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-07 19:42:10,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:10,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-11-07 19:42:10,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:13,966 INFO L124 PetriNetUnfolderBase]: 52825/65437 cut-off events. [2024-11-07 19:42:13,966 INFO L125 PetriNetUnfolderBase]: For 1850/1850 co-relation queries the response was YES. [2024-11-07 19:42:14,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133753 conditions, 65437 events. 52825/65437 cut-off events. For 1850/1850 co-relation queries the response was YES. Maximal size of possible extension queue 2931. Compared 331481 event pairs, 36233 based on Foata normal form. 1555/63816 useless extension candidates. Maximal degree in co-relation 133740. Up to 57877 conditions per place. [2024-11-07 19:42:14,527 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 43 selfloop transitions, 5 changer transitions 21/85 dead transitions. [2024-11-07 19:42:14,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 381 flow [2024-11-07 19:42:14,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:42:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:42:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-07 19:42:14,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6313725490196078 [2024-11-07 19:42:14,529 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 129 flow. Second operand 5 states and 161 transitions. [2024-11-07 19:42:14,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 381 flow [2024-11-07 19:42:14,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:14,532 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 173 flow [2024-11-07 19:42:14,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-11-07 19:42:14,534 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2024-11-07 19:42:14,534 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 173 flow [2024-11-07 19:42:14,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-07 19:42:14,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:14,535 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:14,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 19:42:14,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-07 19:42:14,736 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:14,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1076071401, now seen corresponding path program 1 times [2024-11-07 19:42:14,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:14,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868016650] [2024-11-07 19:42:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:14,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:14,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:14,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868016650] [2024-11-07 19:42:14,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868016650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:14,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105737590] [2024-11-07 19:42:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:14,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:14,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:14,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:42:14,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 19:42:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:15,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:42:15,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:15,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:15,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105737590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:15,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:15,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-07 19:42:15,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046074594] [2024-11-07 19:42:15,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:15,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:42:15,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:42:15,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:42:15,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-07 19:42:15,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2024-11-07 19:42:15,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:15,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-07 19:42:15,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:17,984 INFO L124 PetriNetUnfolderBase]: 27624/39291 cut-off events. [2024-11-07 19:42:17,984 INFO L125 PetriNetUnfolderBase]: For 10206/12488 co-relation queries the response was YES. [2024-11-07 19:42:18,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85517 conditions, 39291 events. 27624/39291 cut-off events. For 10206/12488 co-relation queries the response was YES. Maximal size of possible extension queue 2394. Compared 290263 event pairs, 22409 based on Foata normal form. 1024/35116 useless extension candidates. Maximal degree in co-relation 85500. Up to 27474 conditions per place. [2024-11-07 19:42:18,417 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 30 selfloop transitions, 4 changer transitions 2/60 dead transitions. [2024-11-07 19:42:18,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 269 flow [2024-11-07 19:42:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:42:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:42:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-11-07 19:42:18,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2024-11-07 19:42:18,419 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 173 flow. Second operand 5 states and 147 transitions. [2024-11-07 19:42:18,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 269 flow [2024-11-07 19:42:18,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 262 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:18,565 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 188 flow [2024-11-07 19:42:18,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2024-11-07 19:42:18,566 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 6 predicate places. [2024-11-07 19:42:18,566 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 188 flow [2024-11-07 19:42:18,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2024-11-07 19:42:18,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:18,566 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:18,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 19:42:18,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:18,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:18,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:18,767 INFO L85 PathProgramCache]: Analyzing trace with hash -695222809, now seen corresponding path program 1 times [2024-11-07 19:42:18,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:18,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557426264] [2024-11-07 19:42:18,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:18,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:42:18,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454412835] [2024-11-07 19:42:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:18,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:18,796 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:42:18,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 19:42:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:18,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 19:42:18,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:18,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:18,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557426264] [2024-11-07 19:42:18,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:42:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454412835] [2024-11-07 19:42:18,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454412835] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:18,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:42:18,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-07 19:42:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347216124] [2024-11-07 19:42:18,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:18,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:42:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:42:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:42:18,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-07 19:42:18,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-11-07 19:42:18,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:18,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-07 19:42:18,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:21,306 INFO L124 PetriNetUnfolderBase]: 23051/31665 cut-off events. [2024-11-07 19:42:21,306 INFO L125 PetriNetUnfolderBase]: For 8458/11502 co-relation queries the response was YES. [2024-11-07 19:42:21,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72682 conditions, 31665 events. 23051/31665 cut-off events. For 8458/11502 co-relation queries the response was YES. Maximal size of possible extension queue 2091. Compared 219360 event pairs, 13017 based on Foata normal form. 1756/29015 useless extension candidates. Maximal degree in co-relation 72663. Up to 14300 conditions per place. [2024-11-07 19:42:21,541 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 31 selfloop transitions, 1 changer transitions 10/63 dead transitions. [2024-11-07 19:42:21,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 63 transitions, 294 flow [2024-11-07 19:42:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:42:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:42:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-07 19:42:21,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-11-07 19:42:21,542 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 188 flow. Second operand 4 states and 128 transitions. [2024-11-07 19:42:21,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 63 transitions, 294 flow [2024-11-07 19:42:21,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 283 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:21,673 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 163 flow [2024-11-07 19:42:21,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2024-11-07 19:42:21,674 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2024-11-07 19:42:21,674 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 163 flow [2024-11-07 19:42:21,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-11-07 19:42:21,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:21,674 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:21,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 19:42:21,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 19:42:21,875 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:21,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:21,875 INFO L85 PathProgramCache]: Analyzing trace with hash 355549737, now seen corresponding path program 1 times [2024-11-07 19:42:21,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:21,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965937534] [2024-11-07 19:42:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:21,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:21,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:21,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:21,910 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:21,910 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:42:21,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:42:21,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:42:21,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:42:21,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 19:42:21,911 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 19:42:21,912 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:42:21,912 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-07 19:42:21,939 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:21,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 59 transitions, 198 flow [2024-11-07 19:42:21,948 INFO L124 PetriNetUnfolderBase]: 18/136 cut-off events. [2024-11-07 19:42:21,948 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-07 19:42:21,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 136 events. 18/136 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 350 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 155. Up to 12 conditions per place. [2024-11-07 19:42:21,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 59 transitions, 198 flow [2024-11-07 19:42:21,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 57 transitions, 189 flow [2024-11-07 19:42:21,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:21,952 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;@6446b7d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:21,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:21,954 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:21,955 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:21,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:21,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:21,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:21,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:21,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:21,955 INFO L85 PathProgramCache]: Analyzing trace with hash -369533479, now seen corresponding path program 1 times [2024-11-07 19:42:21,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:21,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961367709] [2024-11-07 19:42:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:21,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:21,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961367709] [2024-11-07 19:42:21,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961367709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:21,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:21,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:42:21,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098261324] [2024-11-07 19:42:21,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:21,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:21,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:21,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:21,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:21,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-07 19:42:21,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-07 19:42:21,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:21,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-07 19:42:21,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:26,366 INFO L124 PetriNetUnfolderBase]: 50636/68719 cut-off events. [2024-11-07 19:42:26,367 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-11-07 19:42:26,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136087 conditions, 68719 events. 50636/68719 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 456401 event pairs, 49271 based on Foata normal form. 4095/67357 useless extension candidates. Maximal degree in co-relation 62570. Up to 61554 conditions per place. [2024-11-07 19:42:26,917 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 27 selfloop transitions, 1 changer transitions 1/53 dead transitions. [2024-11-07 19:42:26,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 53 transitions, 239 flow [2024-11-07 19:42:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-07 19:42:26,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045197740112994 [2024-11-07 19:42:26,918 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 189 flow. Second operand 3 states and 107 transitions. [2024-11-07 19:42:26,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 53 transitions, 239 flow [2024-11-07 19:42:26,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 53 transitions, 214 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:26,985 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 156 flow [2024-11-07 19:42:26,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2024-11-07 19:42:26,986 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-07 19:42:26,986 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 156 flow [2024-11-07 19:42:26,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-07 19:42:26,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:26,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:26,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 19:42:26,986 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:26,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash -369532840, now seen corresponding path program 1 times [2024-11-07 19:42:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:26,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168549752] [2024-11-07 19:42:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:26,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 19:42:26,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018203681] [2024-11-07 19:42:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:26,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:26,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:26,997 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:42:26,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 19:42:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:27,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 19:42:27,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:27,285 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:42:27,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:27,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168549752] [2024-11-07 19:42:27,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 19:42:27,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018203681] [2024-11-07 19:42:27,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018203681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:27,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:27,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:42:27,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558414408] [2024-11-07 19:42:27,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:27,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:42:27,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:27,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:42:27,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:42:27,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2024-11-07 19:42:27,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:27,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:27,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2024-11-07 19:42:27,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand