./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --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/weaver/popl20-more-mts.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\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', 'cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e']
Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-4f9af40
[2024-11-07 19:36:18,306 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-07 19:36:18,363 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-11-07 19:36:18,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-07 19:36:18,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-07 19:36:18,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-07 19:36:18,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-07 19:36:18,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-07 19:36:18,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-07 19:36:18,391 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-07 19:36:18,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-07 19:36:18,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-07 19:36:18,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-07 19:36:18,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-07 19:36:18,392 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-07 19:36:18,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-07 19:36:18,392 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-07 19:36:18,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-07 19:36:18,393 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-07 19:36:18,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-07 19:36:18,393 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-11-07 19:36:18,395 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-11-07 19:36:18,395 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-11-07 19:36:18,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-07 19:36:18,395 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-07 19:36:18,395 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-07 19:36:18,395 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-07 19:36:18,395 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-07 19:36:18,395 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-07 19:36:18,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-07 19:36:18,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-07 19:36:18,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-07 19:36:18,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-07 19:36:18,396 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 -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e
[2024-11-07 19:36:18,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-07 19:36:18,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-07 19:36:18,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-07 19:36:18,612 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-07 19:36:18,612 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-07 19:36:18,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c
[2024-11-07 19:36:19,794 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-07 19:36:19,981 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-07 19:36:19,982 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c
[2024-11-07 19:36:19,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f2ab7c473/fd1440049dca4e2db85980863e1e2856/FLAGa8b0790d2
[2024-11-07 19:36:20,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f2ab7c473/fd1440049dca4e2db85980863e1e2856
[2024-11-07 19:36:20,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-07 19:36:20,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-07 19:36:20,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-07 19:36:20,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-07 19:36:20,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-07 19:36:20,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c7830a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20, skipping insertion in model container
[2024-11-07 19:36:20,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,041 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-07 19:36:20,194 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model
[2024-11-07 19:36:20,202 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-07 19:36:20,209 INFO L200 MainTranslator]: Completed pre-run
[2024-11-07 19:36:20,234 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-07 19:36:20,245 INFO L204 MainTranslator]: Completed translation
[2024-11-07 19:36:20,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20 WrapperNode
[2024-11-07 19:36:20,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-07 19:36:20,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-07 19:36:20,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-07 19:36:20,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-07 19:36:20,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,286 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 14, calls inlined = 20, statements flattened = 218
[2024-11-07 19:36:20,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-07 19:36:20,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-07 19:36:20,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-07 19:36:20,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-07 19:36:20,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,317 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1].
[2024-11-07 19:36:20,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-07 19:36:20,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-07 19:36:20,342 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-07 19:36:20,342 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-07 19:36:20,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (1/1) ...
[2024-11-07 19:36:20,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-07 19:36:20,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:20,371 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 19:36:20,373 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 19:36:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-07 19:36:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-11-07 19:36:20,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-11-07 19:36:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-11-07 19:36:20,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2024-11-07 19:36:20,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-07 19:36:20,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-07 19:36:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-07 19:36:20,392 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 19:36:20,477 INFO L238 CfgBuilder]: Building ICFG
[2024-11-07 19:36:20,478 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-07 19:36:20,826 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-07 19:36:20,826 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-07 19:36:21,087 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-07 19:36:21,087 INFO L316 CfgBuilder]: Removed 4 assume(true) statements.
[2024-11-07 19:36:21,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:36:21 BoogieIcfgContainer
[2024-11-07 19:36:21,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-07 19:36:21,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-07 19:36:21,090 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-07 19:36:21,093 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-07 19:36:21,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:36:20" (1/3) ...
[2024-11-07 19:36:21,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fe8ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:36:21, skipping insertion in model container
[2024-11-07 19:36:21,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:20" (2/3) ...
[2024-11-07 19:36:21,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fe8ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:36:21, skipping insertion in model container
[2024-11-07 19:36:21,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:36:21" (3/3) ...
[2024-11-07 19:36:21,095 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c
[2024-11-07 19:36:21,107 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-07 19:36:21,107 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations.
[2024-11-07 19:36:21,108 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-07 19:36:21,189 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2024-11-07 19:36:21,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 137 flow
[2024-11-07 19:36:21,248 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events.
[2024-11-07 19:36:21,250 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2024-11-07 19:36:21,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 6/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 144 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place.
[2024-11-07 19:36:21,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 58 transitions, 137 flow
[2024-11-07 19:36:21,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 126 flow
[2024-11-07 19:36:21,268 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-07 19:36:21,281 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;@71be0a74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-07 19:36:21,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations.
[2024-11-07 19:36:21,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-07 19:36:21,284 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events.
[2024-11-07 19:36:21,284 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-07 19:36:21,284 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:21,285 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2024-11-07 19:36:21,286 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:21,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:21,291 INFO L85 PathProgramCache]: Analyzing trace with hash 725632, now seen corresponding path program 1 times
[2024-11-07 19:36:21,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:21,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657893537]
[2024-11-07 19:36:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:21,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:21,448 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 19:36:21,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:21,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657893537]
[2024-11-07 19:36:21,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657893537] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 19:36:21,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 19:36:21,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-11-07 19:36:21,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827204582]
[2024-11-07 19:36:21,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 19:36:21,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-07 19:36:21,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:21,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-07 19:36:21,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-07 19:36:21,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:21,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:36:21,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:21,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:21,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:21,788 INFO L124 PetriNetUnfolderBase]: 1076/1573 cut-off events.
[2024-11-07 19:36:21,789 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES.
[2024-11-07 19:36:21,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1573 events. 1076/1573 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6768 event pairs, 723 based on Foata normal form. 1/1429 useless extension candidates. Maximal degree in co-relation 2878. Up to 1475 conditions per place.
[2024-11-07 19:36:21,808 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 30 selfloop transitions, 2 changer transitions 0/47 dead transitions.
[2024-11-07 19:36:21,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 176 flow
[2024-11-07 19:36:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-07 19:36:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-07 19:36:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions.
[2024-11-07 19:36:21,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529
[2024-11-07 19:36:21,822 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 126 flow. Second operand 3 states and 95 transitions.
[2024-11-07 19:36:21,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 176 flow
[2024-11-07 19:36:21,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 164 flow, removed 0 selfloop flow, removed 6 redundant places.
[2024-11-07 19:36:21,832 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 104 flow
[2024-11-07 19:36:21,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=47}
[2024-11-07 19:36:21,837 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -11 predicate places.
[2024-11-07 19:36:21,837 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 104 flow
[2024-11-07 19:36:21,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:36:21,838 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:21,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2024-11-07 19:36:21,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-07 19:36:21,838 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:21,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash 725633, now seen corresponding path program 1 times
[2024-11-07 19:36:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:21,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571592541]
[2024-11-07 19:36:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:21,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:22,097 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 19:36:22,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:22,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571592541]
[2024-11-07 19:36:22,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571592541] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 19:36:22,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 19:36:22,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-07 19:36:22,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365038373]
[2024-11-07 19:36:22,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 19:36:22,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-07 19:36:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-07 19:36:22,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-07 19:36:22,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:22,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 19:36:22,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:22,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:22,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:22,375 INFO L124 PetriNetUnfolderBase]: 1077/1576 cut-off events.
[2024-11-07 19:36:22,375 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES.
[2024-11-07 19:36:22,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3094 conditions, 1576 events. 1077/1576 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6764 event pairs, 723 based on Foata normal form. 0/1431 useless extension candidates. Maximal degree in co-relation 3072. Up to 1480 conditions per place.
[2024-11-07 19:36:22,385 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 32 selfloop transitions, 4 changer transitions 0/50 dead transitions.
[2024-11-07 19:36:22,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 184 flow
[2024-11-07 19:36:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-07 19:36:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-07 19:36:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions.
[2024-11-07 19:36:22,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4870689655172414
[2024-11-07 19:36:22,388 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 104 flow. Second operand 4 states and 113 transitions.
[2024-11-07 19:36:22,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 184 flow
[2024-11-07 19:36:22,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-07 19:36:22,390 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 127 flow
[2024-11-07 19:36:22,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=50, PETRI_TRANSITIONS=50}
[2024-11-07 19:36:22,391 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places.
[2024-11-07 19:36:22,392 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 127 flow
[2024-11-07 19:36:22,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 19:36:22,392 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:22,392 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1]
[2024-11-07 19:36:22,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-07 19:36:22,392 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:22,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash 697356455, now seen corresponding path program 1 times
[2024-11-07 19:36:22,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:22,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031157239]
[2024-11-07 19:36:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:22,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:22,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031157239]
[2024-11-07 19:36:22,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031157239] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:22,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526617172]
[2024-11-07 19:36:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:22,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:22,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:22,616 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 19:36:22,617 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 19:36:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:22,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:22,693 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:22,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9
[2024-11-07 19:36:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:22,949 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:23,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526617172] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:23,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:23,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9
[2024-11-07 19:36:23,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005278275]
[2024-11-07 19:36:23,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:23,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-07 19:36:23,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-07 19:36:23,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2024-11-07 19:36:23,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:23,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 127 flow. Second operand has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 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 19:36:23,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:23,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:23,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:23,450 INFO L124 PetriNetUnfolderBase]: 1078/1578 cut-off events.
[2024-11-07 19:36:23,451 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES.
[2024-11-07 19:36:23,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3110 conditions, 1578 events. 1078/1578 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6767 event pairs, 723 based on Foata normal form. 0/1432 useless extension candidates. Maximal degree in co-relation 3079. Up to 1477 conditions per place.
[2024-11-07 19:36:23,458 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 28 selfloop transitions, 10 changer transitions 0/52 dead transitions.
[2024-11-07 19:36:23,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 211 flow
[2024-11-07 19:36:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-07 19:36:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-07 19:36:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions.
[2024-11-07 19:36:23,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586
[2024-11-07 19:36:23,462 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 127 flow. Second operand 8 states and 192 transitions.
[2024-11-07 19:36:23,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 211 flow
[2024-11-07 19:36:23,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-07 19:36:23,463 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 152 flow
[2024-11-07 19:36:23,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=152, PETRI_PLACES=55, PETRI_TRANSITIONS=52}
[2024-11-07 19:36:23,464 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places.
[2024-11-07 19:36:23,464 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 152 flow
[2024-11-07 19:36:23,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 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 19:36:23,466 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:23,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:23,483 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 19:36:23,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:23,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:23,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:23,671 INFO L85 PathProgramCache]: Analyzing trace with hash 146355160, now seen corresponding path program 1 times
[2024-11-07 19:36:23,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:23,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729810045]
[2024-11-07 19:36:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:23,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:23,719 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 19:36:23,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729810045]
[2024-11-07 19:36:23,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729810045] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 19:36:23,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 19:36:23,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-07 19:36:23,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284473645]
[2024-11-07 19:36:23,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 19:36:23,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-07 19:36:23,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-07 19:36:23,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-07 19:36:23,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58
[2024-11-07 19:36:23,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-07 19:36:23,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:23,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58
[2024-11-07 19:36:23,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:23,865 INFO L124 PetriNetUnfolderBase]: 921/1347 cut-off events.
[2024-11-07 19:36:23,866 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES.
[2024-11-07 19:36:23,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 1347 events. 921/1347 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5498 event pairs, 608 based on Foata normal form. 0/1275 useless extension candidates. Maximal degree in co-relation 2636. Up to 1263 conditions per place.
[2024-11-07 19:36:23,873 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 33 selfloop transitions, 4 changer transitions 0/47 dead transitions.
[2024-11-07 19:36:23,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 216 flow
[2024-11-07 19:36:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-07 19:36:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-07 19:36:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions.
[2024-11-07 19:36:23,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586
[2024-11-07 19:36:23,874 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 152 flow. Second operand 4 states and 96 transitions.
[2024-11-07 19:36:23,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 216 flow
[2024-11-07 19:36:23,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 174 flow, removed 6 selfloop flow, removed 7 redundant places.
[2024-11-07 19:36:23,877 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 108 flow
[2024-11-07 19:36:23,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=47}
[2024-11-07 19:36:23,877 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -12 predicate places.
[2024-11-07 19:36:23,878 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 108 flow
[2024-11-07 19:36:23,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-07 19:36:23,878 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:23,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:23,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-07 19:36:23,879 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:23,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash 146355161, now seen corresponding path program 1 times
[2024-11-07 19:36:23,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:23,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385434802]
[2024-11-07 19:36:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:23,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:23,946 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 19:36:23,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:23,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385434802]
[2024-11-07 19:36:23,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385434802] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 19:36:23,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 19:36:23,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-07 19:36:23,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533788762]
[2024-11-07 19:36:23,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 19:36:23,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-07 19:36:23,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-07 19:36:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-07 19:36:23,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58
[2024-11-07 19:36:23,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 19:36:23,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:23,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58
[2024-11-07 19:36:23,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:24,091 INFO L124 PetriNetUnfolderBase]: 920/1346 cut-off events.
[2024-11-07 19:36:24,091 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES.
[2024-11-07 19:36:24,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 1346 events. 920/1346 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5513 event pairs, 608 based on Foata normal form. 1/1277 useless extension candidates. Maximal degree in co-relation 2628. Up to 1268 conditions per place.
[2024-11-07 19:36:24,099 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 34 selfloop transitions, 2 changer transitions 0/46 dead transitions.
[2024-11-07 19:36:24,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 176 flow
[2024-11-07 19:36:24,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-07 19:36:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-07 19:36:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions.
[2024-11-07 19:36:24,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713
[2024-11-07 19:36:24,101 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 108 flow. Second operand 3 states and 94 transitions.
[2024-11-07 19:36:24,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 176 flow
[2024-11-07 19:36:24,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-07 19:36:24,102 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 104 flow
[2024-11-07 19:36:24,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=46}
[2024-11-07 19:36:24,103 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -12 predicate places.
[2024-11-07 19:36:24,103 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 104 flow
[2024-11-07 19:36:24,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 19:36:24,103 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:24,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:24,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-07 19:36:24,103 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:24,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:24,104 INFO L85 PathProgramCache]: Analyzing trace with hash 193199091, now seen corresponding path program 1 times
[2024-11-07 19:36:24,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:24,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186185519]
[2024-11-07 19:36:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:24,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:24,241 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 19:36:24,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:24,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186185519]
[2024-11-07 19:36:24,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186185519] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:24,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318724917]
[2024-11-07 19:36:24,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:24,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:24,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:24,245 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 19:36:24,246 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 19:36:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:24,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:24,307 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:24,357 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 19:36:24,357 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:24,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18
[2024-11-07 19:36:24,409 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 19:36:24,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318724917] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:24,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:24,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2024-11-07 19:36:24,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495753115]
[2024-11-07 19:36:24,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:24,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-07 19:36:24,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:24,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-07 19:36:24,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2024-11-07 19:36:24,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58
[2024-11-07 19:36:24,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 104 flow. Second operand has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 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 19:36:24,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:24,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58
[2024-11-07 19:36:24,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:24,828 INFO L124 PetriNetUnfolderBase]: 1680/2529 cut-off events.
[2024-11-07 19:36:24,829 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES.
[2024-11-07 19:36:24,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4868 conditions, 2529 events. 1680/2529 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12419 event pairs, 483 based on Foata normal form. 0/2360 useless extension candidates. Maximal degree in co-relation 4857. Up to 1041 conditions per place.
[2024-11-07 19:36:24,841 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 65 selfloop transitions, 9 changer transitions 0/82 dead transitions.
[2024-11-07 19:36:24,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 82 transitions, 328 flow
[2024-11-07 19:36:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-07 19:36:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-07 19:36:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions.
[2024-11-07 19:36:24,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49261083743842365
[2024-11-07 19:36:24,843 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 104 flow. Second operand 7 states and 200 transitions.
[2024-11-07 19:36:24,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 82 transitions, 328 flow
[2024-11-07 19:36:24,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 82 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-07 19:36:24,844 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 138 flow
[2024-11-07 19:36:24,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=51, PETRI_TRANSITIONS=48}
[2024-11-07 19:36:24,844 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places.
[2024-11-07 19:36:24,844 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 138 flow
[2024-11-07 19:36:24,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 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 19:36:24,845 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:24,845 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:24,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-07 19:36:25,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:25,045 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:25,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash 974478481, now seen corresponding path program 1 times
[2024-11-07 19:36:25,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:25,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587196833]
[2024-11-07 19:36:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:25,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:25,124 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 19:36:25,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:25,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587196833]
[2024-11-07 19:36:25,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587196833] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:25,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692156874]
[2024-11-07 19:36:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:25,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:25,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:25,126 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 19:36:25,127 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 19:36:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:25,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:25,186 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:25,233 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 19:36:25,234 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:25,282 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 19:36:25,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692156874] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:25,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:25,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12
[2024-11-07 19:36:25,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757093992]
[2024-11-07 19:36:25,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:25,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-07 19:36:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-07 19:36:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2024-11-07 19:36:25,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:25,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 138 flow. Second operand has 13 states, 13 states have (on average 20.846153846153847) internal successors, (271), 13 states have internal predecessors, (271), 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 19:36:25,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:25,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:25,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:25,747 INFO L124 PetriNetUnfolderBase]: 2559/3899 cut-off events.
[2024-11-07 19:36:25,747 INFO L125 PetriNetUnfolderBase]: For 1568/1623 co-relation queries the response was YES.
[2024-11-07 19:36:25,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8790 conditions, 3899 events. 2559/3899 cut-off events. For 1568/1623 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20169 event pairs, 1504 based on Foata normal form. 0/3620 useless extension candidates. Maximal degree in co-relation 6023. Up to 2430 conditions per place.
[2024-11-07 19:36:25,765 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 76 selfloop transitions, 8 changer transitions 0/92 dead transitions.
[2024-11-07 19:36:25,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 92 transitions, 446 flow
[2024-11-07 19:36:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-07 19:36:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-07 19:36:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions.
[2024-11-07 19:36:25,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5147783251231527
[2024-11-07 19:36:25,767 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 138 flow. Second operand 7 states and 209 transitions.
[2024-11-07 19:36:25,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 92 transitions, 446 flow
[2024-11-07 19:36:25,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 92 transitions, 440 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-07 19:36:25,769 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 163 flow
[2024-11-07 19:36:25,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=163, PETRI_PLACES=56, PETRI_TRANSITIONS=50}
[2024-11-07 19:36:25,770 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places.
[2024-11-07 19:36:25,770 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 163 flow
[2024-11-07 19:36:25,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.846153846153847) internal successors, (271), 13 states have internal predecessors, (271), 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 19:36:25,770 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:25,770 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:25,783 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 19:36:25,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:25,975 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:25,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash -878016597, now seen corresponding path program 2 times
[2024-11-07 19:36:25,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:25,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140597114]
[2024-11-07 19:36:25,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:25,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:26,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140597114]
[2024-11-07 19:36:26,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140597114] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687687328]
[2024-11-07 19:36:26,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-07 19:36:26,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:26,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:26,129 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 19:36:26,130 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 19:36:26,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-07 19:36:26,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 19:36:26,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:26,190 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:26,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-07 19:36:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-07 19:36:26,344 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-07 19:36:26,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687687328] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 19:36:26,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-07 19:36:26,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9
[2024-11-07 19:36:26,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99103579]
[2024-11-07 19:36:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 19:36:26,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-07 19:36:26,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:26,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-07 19:36:26,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2024-11-07 19:36:26,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58
[2024-11-07 19:36:26,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 19:36:26,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:26,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58
[2024-11-07 19:36:26,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:26,893 INFO L124 PetriNetUnfolderBase]: 4429/6342 cut-off events.
[2024-11-07 19:36:26,893 INFO L125 PetriNetUnfolderBase]: For 3105/3229 co-relation queries the response was YES.
[2024-11-07 19:36:26,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15462 conditions, 6342 events. 4429/6342 cut-off events. For 3105/3229 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 31580 event pairs, 1966 based on Foata normal form. 0/5671 useless extension candidates. Maximal degree in co-relation 12289. Up to 3995 conditions per place.
[2024-11-07 19:36:26,924 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 77 selfloop transitions, 9 changer transitions 0/92 dead transitions.
[2024-11-07 19:36:26,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 471 flow
[2024-11-07 19:36:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-07 19:36:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-07 19:36:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions.
[2024-11-07 19:36:26,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5
[2024-11-07 19:36:26,926 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 163 flow. Second operand 6 states and 174 transitions.
[2024-11-07 19:36:26,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 471 flow
[2024-11-07 19:36:26,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 460 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-07 19:36:26,930 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 197 flow
[2024-11-07 19:36:26,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=59, PETRI_TRANSITIONS=53}
[2024-11-07 19:36:26,931 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places.
[2024-11-07 19:36:26,931 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 197 flow
[2024-11-07 19:36:26,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 19:36:26,931 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:26,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:26,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-07 19:36:27,132 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,SelfDestructingSolverStorable7
[2024-11-07 19:36:27,132 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:27,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash 140386399, now seen corresponding path program 1 times
[2024-11-07 19:36:27,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:27,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594922327]
[2024-11-07 19:36:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:27,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:27,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594922327]
[2024-11-07 19:36:27,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594922327] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 19:36:27,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 19:36:27,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-07 19:36:27,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688946697]
[2024-11-07 19:36:27,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 19:36:27,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-07 19:36:27,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:27,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-07 19:36:27,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-07 19:36:27,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58
[2024-11-07 19:36:27,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 19:36:27,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:27,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58
[2024-11-07 19:36:27,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:27,832 INFO L124 PetriNetUnfolderBase]: 4070/6291 cut-off events.
[2024-11-07 19:36:27,832 INFO L125 PetriNetUnfolderBase]: For 5358/5571 co-relation queries the response was YES.
[2024-11-07 19:36:27,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16202 conditions, 6291 events. 4070/6291 cut-off events. For 5358/5571 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 34773 event pairs, 1771 based on Foata normal form. 22/6098 useless extension candidates. Maximal degree in co-relation 11971. Up to 3722 conditions per place.
[2024-11-07 19:36:27,864 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 60 selfloop transitions, 7 changer transitions 0/77 dead transitions.
[2024-11-07 19:36:27,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 436 flow
[2024-11-07 19:36:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-07 19:36:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-07 19:36:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions.
[2024-11-07 19:36:27,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5137931034482759
[2024-11-07 19:36:27,865 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 197 flow. Second operand 5 states and 149 transitions.
[2024-11-07 19:36:27,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 436 flow
[2024-11-07 19:36:27,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 414 flow, removed 3 selfloop flow, removed 3 redundant places.
[2024-11-07 19:36:27,872 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 216 flow
[2024-11-07 19:36:27,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=62, PETRI_TRANSITIONS=55}
[2024-11-07 19:36:27,872 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places.
[2024-11-07 19:36:27,872 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 216 flow
[2024-11-07 19:36:27,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 19:36:27,873 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:27,873 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:27,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-07 19:36:27,873 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:27,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1910108667, now seen corresponding path program 1 times
[2024-11-07 19:36:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:27,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553657194]
[2024-11-07 19:36:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553657194]
[2024-11-07 19:36:27,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553657194] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072113319]
[2024-11-07 19:36:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:27,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:27,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:27,950 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 19:36:27,951 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 19:36:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:28,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:28,036 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:28,091 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:28,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072113319] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:28,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:28,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13
[2024-11-07 19:36:28,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325314066]
[2024-11-07 19:36:28,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:28,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-07 19:36:28,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:28,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-07 19:36:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182
[2024-11-07 19:36:28,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:28,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 216 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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 19:36:28,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:28,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:28,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:28,832 INFO L124 PetriNetUnfolderBase]: 4550/6843 cut-off events.
[2024-11-07 19:36:28,832 INFO L125 PetriNetUnfolderBase]: For 6628/6928 co-relation queries the response was YES.
[2024-11-07 19:36:28,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18985 conditions, 6843 events. 4550/6843 cut-off events. For 6628/6928 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 36198 event pairs, 2603 based on Foata normal form. 176/6977 useless extension candidates. Maximal degree in co-relation 15177. Up to 4992 conditions per place.
[2024-11-07 19:36:28,879 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 89 selfloop transitions, 10 changer transitions 0/108 dead transitions.
[2024-11-07 19:36:28,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 636 flow
[2024-11-07 19:36:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-07 19:36:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-07 19:36:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 239 transitions.
[2024-11-07 19:36:28,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5150862068965517
[2024-11-07 19:36:28,881 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 216 flow. Second operand 8 states and 239 transitions.
[2024-11-07 19:36:28,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 636 flow
[2024-11-07 19:36:28,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 632 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-07 19:36:28,888 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 273 flow
[2024-11-07 19:36:28,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=273, PETRI_PLACES=70, PETRI_TRANSITIONS=59}
[2024-11-07 19:36:28,890 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places.
[2024-11-07 19:36:28,890 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 273 flow
[2024-11-07 19:36:28,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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 19:36:28,890 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:28,891 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:28,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-07 19:36:29,094 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 19:36:29,095 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:29,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash -221200747, now seen corresponding path program 2 times
[2024-11-07 19:36:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:29,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490253271]
[2024-11-07 19:36:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:29,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:29,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:29,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490253271]
[2024-11-07 19:36:29,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490253271] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:29,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021081977]
[2024-11-07 19:36:29,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-07 19:36:29,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:29,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:29,276 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 19:36:29,278 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 19:36:29,339 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-07 19:36:29,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 19:36:29,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:29,341 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:29,416 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:29,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20
[2024-11-07 19:36:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:29,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021081977] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:29,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:29,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14
[2024-11-07 19:36:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108521989]
[2024-11-07 19:36:29,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:29,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-07 19:36:29,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:29,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-07 19:36:29,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240
[2024-11-07 19:36:29,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58
[2024-11-07 19:36:29,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 273 flow. Second operand has 16 states, 16 states have (on average 19.8125) internal successors, (317), 16 states have internal predecessors, (317), 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 19:36:29,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:29,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58
[2024-11-07 19:36:29,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:30,636 INFO L124 PetriNetUnfolderBase]: 5346/8019 cut-off events.
[2024-11-07 19:36:30,636 INFO L125 PetriNetUnfolderBase]: For 9230/9774 co-relation queries the response was YES.
[2024-11-07 19:36:30,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23131 conditions, 8019 events. 5346/8019 cut-off events. For 9230/9774 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 43464 event pairs, 1275 based on Foata normal form. 274/8272 useless extension candidates. Maximal degree in co-relation 19380. Up to 2199 conditions per place.
[2024-11-07 19:36:30,677 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 137 selfloop transitions, 14 changer transitions 0/160 dead transitions.
[2024-11-07 19:36:30,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 160 transitions, 967 flow
[2024-11-07 19:36:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-07 19:36:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-11-07 19:36:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions.
[2024-11-07 19:36:30,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5362068965517242
[2024-11-07 19:36:30,679 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 273 flow. Second operand 10 states and 311 transitions.
[2024-11-07 19:36:30,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 160 transitions, 967 flow
[2024-11-07 19:36:30,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 160 transitions, 954 flow, removed 1 selfloop flow, removed 4 redundant places.
[2024-11-07 19:36:30,694 INFO L231 Difference]: Finished difference. Result has 78 places, 63 transitions, 330 flow
[2024-11-07 19:36:30,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=78, PETRI_TRANSITIONS=63}
[2024-11-07 19:36:30,695 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places.
[2024-11-07 19:36:30,695 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 63 transitions, 330 flow
[2024-11-07 19:36:30,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.8125) internal successors, (317), 16 states have internal predecessors, (317), 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 19:36:30,696 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:30,696 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:30,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-07 19:36:30,899 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,SelfDestructingSolverStorable10
[2024-11-07 19:36:30,899 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:30,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:30,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1046020415, now seen corresponding path program 1 times
[2024-11-07 19:36:30,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:30,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818805185]
[2024-11-07 19:36:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:30,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:30,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818805185]
[2024-11-07 19:36:30,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818805185] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:30,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859997598]
[2024-11-07 19:36:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:30,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:30,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:31,002 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 19:36:31,003 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 19:36:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:31,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:31,063 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:31,143 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859997598] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:31,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:31,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13
[2024-11-07 19:36:31,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727391818]
[2024-11-07 19:36:31,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:31,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-07 19:36:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-07 19:36:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182
[2024-11-07 19:36:31,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:31,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 330 flow. Second operand has 14 states, 14 states have (on average 21.357142857142858) internal successors, (299), 14 states have internal predecessors, (299), 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 19:36:31,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:31,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:31,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:31,894 INFO L124 PetriNetUnfolderBase]: 6186/8992 cut-off events.
[2024-11-07 19:36:31,894 INFO L125 PetriNetUnfolderBase]: For 17815/18436 co-relation queries the response was YES.
[2024-11-07 19:36:31,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28124 conditions, 8992 events. 6186/8992 cut-off events. For 17815/18436 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 45868 event pairs, 3675 based on Foata normal form. 232/9188 useless extension candidates. Maximal degree in co-relation 24570. Up to 7248 conditions per place.
[2024-11-07 19:36:32,058 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 86 selfloop transitions, 10 changer transitions 0/105 dead transitions.
[2024-11-07 19:36:32,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 105 transitions, 728 flow
[2024-11-07 19:36:32,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-07 19:36:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-07 19:36:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions.
[2024-11-07 19:36:32,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724
[2024-11-07 19:36:32,061 INFO L175 Difference]: Start difference. First operand has 78 places, 63 transitions, 330 flow. Second operand 8 states and 236 transitions.
[2024-11-07 19:36:32,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 105 transitions, 728 flow
[2024-11-07 19:36:32,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 682 flow, removed 4 selfloop flow, removed 6 redundant places.
[2024-11-07 19:36:32,077 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 363 flow
[2024-11-07 19:36:32,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=363, PETRI_PLACES=82, PETRI_TRANSITIONS=67}
[2024-11-07 19:36:32,079 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places.
[2024-11-07 19:36:32,080 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 363 flow
[2024-11-07 19:36:32,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.357142857142858) internal successors, (299), 14 states have internal predecessors, (299), 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 19:36:32,080 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:32,080 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:32,095 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 19:36:32,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:32,282 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:32,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:32,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1609139379, now seen corresponding path program 1 times
[2024-11-07 19:36:32,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:32,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017029547]
[2024-11-07 19:36:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:32,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:32,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017029547]
[2024-11-07 19:36:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017029547] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693959589]
[2024-11-07 19:36:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:32,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:32,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:32,390 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 19:36:32,395 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 19:36:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:32,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:32,463 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:32,560 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:32,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693959589] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:32,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:32,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17
[2024-11-07 19:36:32,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189122412]
[2024-11-07 19:36:32,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:32,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-07 19:36:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-07 19:36:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2024-11-07 19:36:32,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:32,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 363 flow. Second operand has 18 states, 18 states have (on average 21.27777777777778) internal successors, (383), 18 states have internal predecessors, (383), 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 19:36:32,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:32,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:32,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:33,885 INFO L124 PetriNetUnfolderBase]: 9395/13906 cut-off events.
[2024-11-07 19:36:33,885 INFO L125 PetriNetUnfolderBase]: For 27659/28273 co-relation queries the response was YES.
[2024-11-07 19:36:33,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45497 conditions, 13906 events. 9395/13906 cut-off events. For 27659/28273 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 78530 event pairs, 4286 based on Foata normal form. 0/13731 useless extension candidates. Maximal degree in co-relation 25272. Up to 6944 conditions per place.
[2024-11-07 19:36:33,982 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 140 selfloop transitions, 14 changer transitions 0/162 dead transitions.
[2024-11-07 19:36:33,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 162 transitions, 1221 flow
[2024-11-07 19:36:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-07 19:36:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-11-07 19:36:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 271 transitions.
[2024-11-07 19:36:33,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5191570881226054
[2024-11-07 19:36:33,983 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 363 flow. Second operand 9 states and 271 transitions.
[2024-11-07 19:36:33,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 162 transitions, 1221 flow
[2024-11-07 19:36:34,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 162 transitions, 1202 flow, removed 2 selfloop flow, removed 4 redundant places.
[2024-11-07 19:36:34,029 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 446 flow
[2024-11-07 19:36:34,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=446, PETRI_PLACES=91, PETRI_TRANSITIONS=74}
[2024-11-07 19:36:34,029 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places.
[2024-11-07 19:36:34,029 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 446 flow
[2024-11-07 19:36:34,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.27777777777778) internal successors, (383), 18 states have internal predecessors, (383), 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 19:36:34,030 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:34,030 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:34,042 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 19:36:34,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:34,230 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:34,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1911731175, now seen corresponding path program 2 times
[2024-11-07 19:36:34,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:34,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269802359]
[2024-11-07 19:36:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:34,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 19:36:34,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269802359]
[2024-11-07 19:36:34,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269802359] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060816396]
[2024-11-07 19:36:34,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-07 19:36:34,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:34,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:34,388 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 19:36:34,389 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 19:36:34,448 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-07 19:36:34,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 19:36:34,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:34,450 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 19:36:34,593 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:34,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31
[2024-11-07 19:36:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 19:36:34,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060816396] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:34,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:34,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18
[2024-11-07 19:36:34,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659542561]
[2024-11-07 19:36:34,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:34,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-11-07 19:36:34,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:34,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-11-07 19:36:34,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380
[2024-11-07 19:36:35,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:35,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 446 flow. Second operand has 20 states, 20 states have (on average 21.4) internal successors, (428), 20 states have internal predecessors, (428), 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 19:36:35,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:35,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:35,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:36,234 INFO L124 PetriNetUnfolderBase]: 10112/14006 cut-off events.
[2024-11-07 19:36:36,234 INFO L125 PetriNetUnfolderBase]: For 32497/34438 co-relation queries the response was YES.
[2024-11-07 19:36:36,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49131 conditions, 14006 events. 10112/14006 cut-off events. For 32497/34438 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 71278 event pairs, 1895 based on Foata normal form. 696/14675 useless extension candidates. Maximal degree in co-relation 37275. Up to 4458 conditions per place.
[2024-11-07 19:36:36,327 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 147 selfloop transitions, 14 changer transitions 0/170 dead transitions.
[2024-11-07 19:36:36,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 170 transitions, 1390 flow
[2024-11-07 19:36:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-07 19:36:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-07 19:36:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions.
[2024-11-07 19:36:36,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133
[2024-11-07 19:36:36,331 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 446 flow. Second operand 7 states and 214 transitions.
[2024-11-07 19:36:36,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 170 transitions, 1390 flow
[2024-11-07 19:36:36,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 170 transitions, 1369 flow, removed 8 selfloop flow, removed 2 redundant places.
[2024-11-07 19:36:36,369 INFO L231 Difference]: Finished difference. Result has 95 places, 75 transitions, 481 flow
[2024-11-07 19:36:36,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=95, PETRI_TRANSITIONS=75}
[2024-11-07 19:36:36,370 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 37 predicate places.
[2024-11-07 19:36:36,370 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 75 transitions, 481 flow
[2024-11-07 19:36:36,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 21.4) internal successors, (428), 20 states have internal predecessors, (428), 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 19:36:36,370 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:36,370 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:36,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-07 19:36:36,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:36,571 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:36,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1189841843, now seen corresponding path program 2 times
[2024-11-07 19:36:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:36,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185154774]
[2024-11-07 19:36:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:36,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-07 19:36:36,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:36,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185154774]
[2024-11-07 19:36:36,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185154774] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:36,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805280186]
[2024-11-07 19:36:36,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-07 19:36:36,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:36,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:36,736 INFO L229 MonitoredProcess]: Starting monitored process 11 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 19:36:36,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-07 19:36:36,798 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-07 19:36:36,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 19:36:36,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:36,800 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:36,916 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:37,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20
[2024-11-07 19:36:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:37,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805280186] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:37,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:37,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20
[2024-11-07 19:36:37,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250422993]
[2024-11-07 19:36:37,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:37,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-07 19:36:37,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-07 19:36:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462
[2024-11-07 19:36:37,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58
[2024-11-07 19:36:37,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 75 transitions, 481 flow. Second operand has 22 states, 22 states have (on average 19.318181818181817) internal successors, (425), 22 states have internal predecessors, (425), 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 19:36:37,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:37,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58
[2024-11-07 19:36:37,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:39,342 INFO L124 PetriNetUnfolderBase]: 11631/16299 cut-off events.
[2024-11-07 19:36:39,343 INFO L125 PetriNetUnfolderBase]: For 51606/53061 co-relation queries the response was YES.
[2024-11-07 19:36:39,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60392 conditions, 16299 events. 11631/16299 cut-off events. For 51606/53061 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 84799 event pairs, 1539 based on Foata normal form. 640/16609 useless extension candidates. Maximal degree in co-relation 39359. Up to 2716 conditions per place.
[2024-11-07 19:36:39,459 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 254 selfloop transitions, 21 changer transitions 0/282 dead transitions.
[2024-11-07 19:36:39,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 282 transitions, 2287 flow
[2024-11-07 19:36:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-11-07 19:36:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2024-11-07 19:36:39,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 475 transitions.
[2024-11-07 19:36:39,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5118534482758621
[2024-11-07 19:36:39,465 INFO L175 Difference]: Start difference. First operand has 95 places, 75 transitions, 481 flow. Second operand 16 states and 475 transitions.
[2024-11-07 19:36:39,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 282 transitions, 2287 flow
[2024-11-07 19:36:39,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 282 transitions, 2169 flow, removed 17 selfloop flow, removed 4 redundant places.
[2024-11-07 19:36:39,528 INFO L231 Difference]: Finished difference. Result has 105 places, 76 transitions, 509 flow
[2024-11-07 19:36:39,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=509, PETRI_PLACES=105, PETRI_TRANSITIONS=76}
[2024-11-07 19:36:39,528 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places.
[2024-11-07 19:36:39,528 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 76 transitions, 509 flow
[2024-11-07 19:36:39,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 19.318181818181817) internal successors, (425), 22 states have internal predecessors, (425), 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 19:36:39,528 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:39,528 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1]
[2024-11-07 19:36:39,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-07 19:36:39,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-11-07 19:36:39,729 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:39,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1981770851, now seen corresponding path program 3 times
[2024-11-07 19:36:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707470229]
[2024-11-07 19:36:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:39,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:39,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:39,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707470229]
[2024-11-07 19:36:39,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707470229] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:39,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875959728]
[2024-11-07 19:36:39,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-07 19:36:39,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:39,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:39,818 INFO L229 MonitoredProcess]: Starting monitored process 12 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 19:36:39,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-07 19:36:39,877 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-07 19:36:39,877 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 19:36:39,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:39,879 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-07 19:36:39,966 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:40,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11
[2024-11-07 19:36:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-07 19:36:40,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875959728] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:40,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:40,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19
[2024-11-07 19:36:40,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269856341]
[2024-11-07 19:36:40,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:40,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-11-07 19:36:40,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-11-07 19:36:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380
[2024-11-07 19:36:40,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58
[2024-11-07 19:36:40,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 76 transitions, 509 flow. Second operand has 20 states, 20 states have (on average 19.35) internal successors, (387), 20 states have internal predecessors, (387), 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 19:36:40,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:40,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58
[2024-11-07 19:36:40,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:41,964 INFO L124 PetriNetUnfolderBase]: 11024/15644 cut-off events.
[2024-11-07 19:36:41,965 INFO L125 PetriNetUnfolderBase]: For 43848/45316 co-relation queries the response was YES.
[2024-11-07 19:36:42,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55654 conditions, 15644 events. 11024/15644 cut-off events. For 43848/45316 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 83106 event pairs, 1796 based on Foata normal form. 242/15862 useless extension candidates. Maximal degree in co-relation 43631. Up to 4056 conditions per place.
[2024-11-07 19:36:42,090 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 256 selfloop transitions, 27 changer transitions 0/291 dead transitions.
[2024-11-07 19:36:42,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 291 transitions, 2357 flow
[2024-11-07 19:36:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-11-07 19:36:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2024-11-07 19:36:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 473 transitions.
[2024-11-07 19:36:42,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509698275862069
[2024-11-07 19:36:42,092 INFO L175 Difference]: Start difference. First operand has 105 places, 76 transitions, 509 flow. Second operand 16 states and 473 transitions.
[2024-11-07 19:36:42,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 291 transitions, 2357 flow
[2024-11-07 19:36:42,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 291 transitions, 2052 flow, removed 37 selfloop flow, removed 15 redundant places.
[2024-11-07 19:36:42,156 INFO L231 Difference]: Finished difference. Result has 109 places, 84 transitions, 579 flow
[2024-11-07 19:36:42,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=579, PETRI_PLACES=109, PETRI_TRANSITIONS=84}
[2024-11-07 19:36:42,157 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 51 predicate places.
[2024-11-07 19:36:42,157 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 84 transitions, 579 flow
[2024-11-07 19:36:42,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.35) internal successors, (387), 20 states have internal predecessors, (387), 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 19:36:42,157 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:42,157 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:42,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-07 19:36:42,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-11-07 19:36:42,358 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:42,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:42,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1952924736, now seen corresponding path program 1 times
[2024-11-07 19:36:42,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:42,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458041386]
[2024-11-07 19:36:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:42,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:42,426 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 19:36:42,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:42,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458041386]
[2024-11-07 19:36:42,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458041386] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382858408]
[2024-11-07 19:36:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:42,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:42,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:42,428 INFO L229 MonitoredProcess]: Starting monitored process 13 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 19:36:42,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-07 19:36:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:42,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:42,502 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:42,526 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 19:36:42,526 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:42,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382858408] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:42,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-07 19:36:42,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 10
[2024-11-07 19:36:42,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358466747]
[2024-11-07 19:36:42,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 19:36:42,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-07 19:36:42,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:42,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-07 19:36:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110
[2024-11-07 19:36:42,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:42,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 84 transitions, 579 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 19:36:42,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:42,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:42,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:43,650 INFO L124 PetriNetUnfolderBase]: 10744/15356 cut-off events.
[2024-11-07 19:36:43,650 INFO L125 PetriNetUnfolderBase]: For 43230/44187 co-relation queries the response was YES.
[2024-11-07 19:36:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53085 conditions, 15356 events. 10744/15356 cut-off events. For 43230/44187 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 84312 event pairs, 2227 based on Foata normal form. 280/15612 useless extension candidates. Maximal degree in co-relation 41834. Up to 9604 conditions per place.
[2024-11-07 19:36:43,744 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 92 selfloop transitions, 13 changer transitions 0/113 dead transitions.
[2024-11-07 19:36:43,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 936 flow
[2024-11-07 19:36:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-07 19:36:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-07 19:36:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions.
[2024-11-07 19:36:43,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.496551724137931
[2024-11-07 19:36:43,745 INFO L175 Difference]: Start difference. First operand has 109 places, 84 transitions, 579 flow. Second operand 5 states and 144 transitions.
[2024-11-07 19:36:43,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 936 flow
[2024-11-07 19:36:43,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 113 transitions, 893 flow, removed 10 selfloop flow, removed 8 redundant places.
[2024-11-07 19:36:43,795 INFO L231 Difference]: Finished difference. Result has 105 places, 81 transitions, 529 flow
[2024-11-07 19:36:43,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=529, PETRI_PLACES=105, PETRI_TRANSITIONS=81}
[2024-11-07 19:36:43,795 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places.
[2024-11-07 19:36:43,795 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 81 transitions, 529 flow
[2024-11-07 19:36:43,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 19:36:43,796 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:43,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:43,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2024-11-07 19:36:43,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-07 19:36:43,996 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:43,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:43,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1015398688, now seen corresponding path program 1 times
[2024-11-07 19:36:43,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:43,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137401085]
[2024-11-07 19:36:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:43,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:44,029 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 19:36:44,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:44,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137401085]
[2024-11-07 19:36:44,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137401085] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 19:36:44,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 19:36:44,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-07 19:36:44,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194050863]
[2024-11-07 19:36:44,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 19:36:44,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-07 19:36:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:44,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-07 19:36:44,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-07 19:36:44,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:36:44,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 81 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 19:36:44,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:44,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:36:44,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:45,077 INFO L124 PetriNetUnfolderBase]: 10788/15040 cut-off events.
[2024-11-07 19:36:45,077 INFO L125 PetriNetUnfolderBase]: For 42545/43289 co-relation queries the response was YES.
[2024-11-07 19:36:45,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51984 conditions, 15040 events. 10788/15040 cut-off events. For 42545/43289 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 77664 event pairs, 3059 based on Foata normal form. 409/15044 useless extension candidates. Maximal degree in co-relation 36988. Up to 8002 conditions per place.
[2024-11-07 19:36:45,189 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 101 selfloop transitions, 9 changer transitions 0/119 dead transitions.
[2024-11-07 19:36:45,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 119 transitions, 1021 flow
[2024-11-07 19:36:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-07 19:36:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-07 19:36:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions.
[2024-11-07 19:36:45,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896
[2024-11-07 19:36:45,190 INFO L175 Difference]: Start difference. First operand has 105 places, 81 transitions, 529 flow. Second operand 4 states and 124 transitions.
[2024-11-07 19:36:45,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 119 transitions, 1021 flow
[2024-11-07 19:36:45,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 119 transitions, 975 flow, removed 1 selfloop flow, removed 4 redundant places.
[2024-11-07 19:36:45,262 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 503 flow
[2024-11-07 19:36:45,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=104, PETRI_TRANSITIONS=79}
[2024-11-07 19:36:45,262 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places.
[2024-11-07 19:36:45,262 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 503 flow
[2024-11-07 19:36:45,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 19:36:45,263 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:45,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:45,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2024-11-07 19:36:45,263 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:45,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2133621176, now seen corresponding path program 1 times
[2024-11-07 19:36:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152296107]
[2024-11-07 19:36:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:45,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-07 19:36:45,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:45,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152296107]
[2024-11-07 19:36:45,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152296107] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:45,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400663135]
[2024-11-07 19:36:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:45,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:45,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:45,678 INFO L229 MonitoredProcess]: Starting monitored process 14 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 19:36:45,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-07 19:36:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:45,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 42 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:45,743 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:45,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-07 19:36:46,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-11-07 19:36:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:46,086 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:46,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77
[2024-11-07 19:36:46,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75
[2024-11-07 19:36:46,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 157
[2024-11-07 19:36:46,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-07 19:36:46,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 218
[2024-11-07 19:36:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:51,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400663135] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:36:51,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:36:51,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28
[2024-11-07 19:36:51,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692001339]
[2024-11-07 19:36:51,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:36:51,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-11-07 19:36:51,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:36:51,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-11-07 19:36:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812
[2024-11-07 19:36:52,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58
[2024-11-07 19:36:52,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 503 flow. Second operand has 29 states, 29 states have (on average 20.689655172413794) internal successors, (600), 29 states have internal predecessors, (600), 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 19:36:52,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:36:52,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58
[2024-11-07 19:36:52,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:36:56,839 INFO L124 PetriNetUnfolderBase]: 21804/30986 cut-off events.
[2024-11-07 19:36:56,839 INFO L125 PetriNetUnfolderBase]: For 90273/91472 co-relation queries the response was YES.
[2024-11-07 19:36:56,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105960 conditions, 30986 events. 21804/30986 cut-off events. For 90273/91472 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 179148 event pairs, 1979 based on Foata normal form. 4/29878 useless extension candidates. Maximal degree in co-relation 84275. Up to 17500 conditions per place.
[2024-11-07 19:36:57,050 INFO L140 encePairwiseOnDemand]: 42/58 looper letters, 314 selfloop transitions, 106 changer transitions 47/475 dead transitions.
[2024-11-07 19:36:57,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 475 transitions, 3613 flow
[2024-11-07 19:36:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2024-11-07 19:36:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2024-11-07 19:36:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 975 transitions.
[2024-11-07 19:36:57,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49442190669371194
[2024-11-07 19:36:57,052 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 503 flow. Second operand 34 states and 975 transitions.
[2024-11-07 19:36:57,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 475 transitions, 3613 flow
[2024-11-07 19:36:57,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 475 transitions, 3531 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-07 19:36:57,277 INFO L231 Difference]: Finished difference. Result has 149 places, 176 transitions, 1502 flow
[2024-11-07 19:36:57,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1502, PETRI_PLACES=149, PETRI_TRANSITIONS=176}
[2024-11-07 19:36:57,278 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 91 predicate places.
[2024-11-07 19:36:57,278 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 176 transitions, 1502 flow
[2024-11-07 19:36:57,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 20.689655172413794) internal successors, (600), 29 states have internal predecessors, (600), 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 19:36:57,278 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:36:57,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:36:57,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-11-07 19:36:57,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:57,479 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:36:57,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:36:57,479 INFO L85 PathProgramCache]: Analyzing trace with hash -639374484, now seen corresponding path program 2 times
[2024-11-07 19:36:57,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:36:57,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283933698]
[2024-11-07 19:36:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:36:57,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:36:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:36:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-07 19:36:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:36:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283933698]
[2024-11-07 19:36:58,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283933698] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:36:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014655820]
[2024-11-07 19:36:58,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-07 19:36:58,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:36:58,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:36:58,050 INFO L229 MonitoredProcess]: Starting monitored process 15 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 19:36:58,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-07 19:36:58,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-07 19:36:58,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 19:36:58,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 39 conjuncts are in the unsatisfiable core
[2024-11-07 19:36:58,121 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:36:58,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-07 19:36:58,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47
[2024-11-07 19:36:58,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36
[2024-11-07 19:36:58,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34
[2024-11-07 19:36:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:36:58,503 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:36:58,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77
[2024-11-07 19:36:58,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75
[2024-11-07 19:36:59,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 169
[2024-11-07 19:36:59,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-07 19:36:59,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 222 treesize of output 232
[2024-11-07 19:37:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:37:05,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014655820] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:37:05,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:37:05,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28
[2024-11-07 19:37:05,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938237223]
[2024-11-07 19:37:05,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:37:05,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-11-07 19:37:05,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:37:05,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-11-07 19:37:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812
[2024-11-07 19:37:07,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58
[2024-11-07 19:37:07,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 176 transitions, 1502 flow. Second operand has 29 states, 29 states have (on average 20.689655172413794) internal successors, (600), 29 states have internal predecessors, (600), 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 19:37:07,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:37:07,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58
[2024-11-07 19:37:07,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:37:12,845 INFO L124 PetriNetUnfolderBase]: 27937/39216 cut-off events.
[2024-11-07 19:37:12,846 INFO L125 PetriNetUnfolderBase]: For 145400/147454 co-relation queries the response was YES.
[2024-11-07 19:37:13,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149960 conditions, 39216 events. 27937/39216 cut-off events. For 145400/147454 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 230153 event pairs, 2888 based on Foata normal form. 3/37917 useless extension candidates. Maximal degree in co-relation 149905. Up to 27149 conditions per place.
[2024-11-07 19:37:13,403 INFO L140 encePairwiseOnDemand]: 41/58 looper letters, 361 selfloop transitions, 200 changer transitions 25/594 dead transitions.
[2024-11-07 19:37:13,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 594 transitions, 5454 flow
[2024-11-07 19:37:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2024-11-07 19:37:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2024-11-07 19:37:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1068 transitions.
[2024-11-07 19:37:13,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47214854111405835
[2024-11-07 19:37:13,405 INFO L175 Difference]: Start difference. First operand has 149 places, 176 transitions, 1502 flow. Second operand 39 states and 1068 transitions.
[2024-11-07 19:37:13,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 594 transitions, 5454 flow
[2024-11-07 19:37:14,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 594 transitions, 5374 flow, removed 32 selfloop flow, removed 9 redundant places.
[2024-11-07 19:37:14,056 INFO L231 Difference]: Finished difference. Result has 188 places, 330 transitions, 3603 flow
[2024-11-07 19:37:14,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3603, PETRI_PLACES=188, PETRI_TRANSITIONS=330}
[2024-11-07 19:37:14,057 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 130 predicate places.
[2024-11-07 19:37:14,057 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 330 transitions, 3603 flow
[2024-11-07 19:37:14,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 20.689655172413794) internal successors, (600), 29 states have internal predecessors, (600), 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 19:37:14,057 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:37:14,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:37:14,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-11-07 19:37:14,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:37:14,258 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:37:14,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:37:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1900677416, now seen corresponding path program 3 times
[2024-11-07 19:37:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:37:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544063374]
[2024-11-07 19:37:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:37:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:37:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:37:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:37:14,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:37:14,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544063374]
[2024-11-07 19:37:14,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544063374] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:37:14,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90032739]
[2024-11-07 19:37:14,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-07 19:37:14,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:37:14,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:37:14,618 INFO L229 MonitoredProcess]: Starting monitored process 16 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 19:37:14,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-07 19:37:14,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-07 19:37:14,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 19:37:14,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 37 conjuncts are in the unsatisfiable core
[2024-11-07 19:37:14,702 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:37:14,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-07 19:37:15,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47
[2024-11-07 19:37:15,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36
[2024-11-07 19:37:15,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34
[2024-11-07 19:37:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:37:15,194 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:37:15,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77
[2024-11-07 19:37:15,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75
[2024-11-07 19:37:15,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 96
[2024-11-07 19:37:15,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 132
[2024-11-07 19:37:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:37:15,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90032739] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:37:15,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:37:15,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30
[2024-11-07 19:37:15,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910545909]
[2024-11-07 19:37:15,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:37:15,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2024-11-07 19:37:15,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:37:15,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2024-11-07 19:37:15,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930
[2024-11-07 19:37:17,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58
[2024-11-07 19:37:17,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 330 transitions, 3603 flow. Second operand has 31 states, 31 states have (on average 20.516129032258064) internal successors, (636), 31 states have internal predecessors, (636), 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 19:37:17,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:37:17,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58
[2024-11-07 19:37:17,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:37:24,964 INFO L124 PetriNetUnfolderBase]: 34371/49311 cut-off events.
[2024-11-07 19:37:24,964 INFO L125 PetriNetUnfolderBase]: For 230951/234560 co-relation queries the response was YES.
[2024-11-07 19:37:25,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211141 conditions, 49311 events. 34371/49311 cut-off events. For 230951/234560 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 314506 event pairs, 1917 based on Foata normal form. 47/49292 useless extension candidates. Maximal degree in co-relation 210839. Up to 20003 conditions per place.
[2024-11-07 19:37:25,791 INFO L140 encePairwiseOnDemand]: 43/58 looper letters, 450 selfloop transitions, 316 changer transitions 49/824 dead transitions.
[2024-11-07 19:37:25,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 824 transitions, 8430 flow
[2024-11-07 19:37:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2024-11-07 19:37:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2024-11-07 19:37:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1074 transitions.
[2024-11-07 19:37:25,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.514367816091954
[2024-11-07 19:37:25,794 INFO L175 Difference]: Start difference. First operand has 188 places, 330 transitions, 3603 flow. Second operand 36 states and 1074 transitions.
[2024-11-07 19:37:25,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 824 transitions, 8430 flow
[2024-11-07 19:37:28,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 824 transitions, 8302 flow, removed 55 selfloop flow, removed 6 redundant places.
[2024-11-07 19:37:28,131 INFO L231 Difference]: Finished difference. Result has 230 places, 442 transitions, 5757 flow
[2024-11-07 19:37:28,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=3497, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5757, PETRI_PLACES=230, PETRI_TRANSITIONS=442}
[2024-11-07 19:37:28,132 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 172 predicate places.
[2024-11-07 19:37:28,132 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 442 transitions, 5757 flow
[2024-11-07 19:37:28,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 20.516129032258064) internal successors, (636), 31 states have internal predecessors, (636), 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 19:37:28,132 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:37:28,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:37:28,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-11-07 19:37:28,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:37:28,333 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:37:28,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:37:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1292058138, now seen corresponding path program 4 times
[2024-11-07 19:37:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:37:28,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131988962]
[2024-11-07 19:37:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:37:28,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:37:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:37:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:37:28,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:37:28,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131988962]
[2024-11-07 19:37:28,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131988962] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:37:28,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313385830]
[2024-11-07 19:37:28,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-07 19:37:28,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:37:28,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:37:28,787 INFO L229 MonitoredProcess]: Starting monitored process 17 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 19:37:28,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-07 19:37:28,861 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-07 19:37:28,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 19:37:28,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-11-07 19:37:28,864 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:37:28,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-07 19:37:29,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-11-07 19:37:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:37:29,270 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 19:37:29,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77
[2024-11-07 19:37:29,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75
[2024-11-07 19:37:29,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 169
[2024-11-07 19:37:29,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-07 19:37:29,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 222 treesize of output 232
[2024-11-07 19:37:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:37:36,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313385830] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 19:37:36,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 19:37:36,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28
[2024-11-07 19:37:36,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138362646]
[2024-11-07 19:37:36,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 19:37:36,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-11-07 19:37:36,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 19:37:36,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-11-07 19:37:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812
[2024-11-07 19:37:37,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58
[2024-11-07 19:37:37,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 442 transitions, 5757 flow. Second operand has 29 states, 29 states have (on average 21.586206896551722) internal successors, (626), 29 states have internal predecessors, (626), 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 19:37:37,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 19:37:37,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58
[2024-11-07 19:37:37,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 19:37:45,364 INFO L124 PetriNetUnfolderBase]: 34046/49577 cut-off events.
[2024-11-07 19:37:45,364 INFO L125 PetriNetUnfolderBase]: For 364844/368664 co-relation queries the response was YES.
[2024-11-07 19:37:46,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234530 conditions, 49577 events. 34046/49577 cut-off events. For 364844/368664 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 327030 event pairs, 3374 based on Foata normal form. 226/49606 useless extension candidates. Maximal degree in co-relation 233362. Up to 35964 conditions per place.
[2024-11-07 19:37:46,265 INFO L140 encePairwiseOnDemand]: 41/58 looper letters, 368 selfloop transitions, 200 changer transitions 34/618 dead transitions.
[2024-11-07 19:37:46,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 618 transitions, 8127 flow
[2024-11-07 19:37:46,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2024-11-07 19:37:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2024-11-07 19:37:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 749 transitions.
[2024-11-07 19:37:46,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782886334610473
[2024-11-07 19:37:46,268 INFO L175 Difference]: Start difference. First operand has 230 places, 442 transitions, 5757 flow. Second operand 27 states and 749 transitions.
[2024-11-07 19:37:46,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 618 transitions, 8127 flow
[2024-11-07 19:37:49,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 618 transitions, 7861 flow, removed 57 selfloop flow, removed 15 redundant places.
[2024-11-07 19:37:49,326 INFO L231 Difference]: Finished difference. Result has 247 places, 468 transitions, 6437 flow
[2024-11-07 19:37:49,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=5530, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6437, PETRI_PLACES=247, PETRI_TRANSITIONS=468}
[2024-11-07 19:37:49,328 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 189 predicate places.
[2024-11-07 19:37:49,328 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 468 transitions, 6437 flow
[2024-11-07 19:37:49,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 21.586206896551722) internal successors, (626), 29 states have internal predecessors, (626), 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 19:37:49,328 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 19:37:49,328 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 19:37:49,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-11-07 19:37:49,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:37:49,529 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-07 19:37:49,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 19:37:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1013339096, now seen corresponding path program 5 times
[2024-11-07 19:37:49,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 19:37:49,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573838114]
[2024-11-07 19:37:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 19:37:49,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 19:37:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 19:37:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-07 19:37:50,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 19:37:50,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573838114]
[2024-11-07 19:37:50,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573838114] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 19:37:50,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10278432]
[2024-11-07 19:37:50,043 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-07 19:37:50,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 19:37:50,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 19:37:50,045 INFO L229 MonitoredProcess]: Starting monitored process 18 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 19:37:50,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-07 19:37:50,115 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-07 19:37:50,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 19:37:50,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 44 conjuncts are in the unsatisfiable core
[2024-11-07 19:37:50,118 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 19:37:50,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-07 19:37:50,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-11-07 19:37:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 19:37:50,546 INFO L311 TraceCheckSpWp]: Computing backward predicates...