./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
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/AutomizerReach.xml', '-i', '../sv-benchmarks/c/pthread-ext/09_fmaxsym.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1']
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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/09_fmaxsym.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-4f9af40
[2024-11-07 11:07:31,735 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-07 11:07:31,821 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-07 11:07:31,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-07 11:07:31,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-07 11:07:31,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-07 11:07:31,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-07 11:07:31,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-07 11:07:31,853 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-07 11:07:31,853 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-07 11:07:31,853 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-07 11:07:31,853 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-07 11:07:31,854 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-07 11:07:31,854 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-07 11:07:31,854 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-07 11:07:31,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-07 11:07:31,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-07 11:07:31,855 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-07 11:07:31,855 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-07 11:07:31,855 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-07 11:07:31,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-07 11:07:31,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-07 11:07:31,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-07 11:07:31,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-07 11:07:31,856 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-07 11:07:31,856 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-07 11:07:31,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-07 11:07:31,856 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-07 11:07:31,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-07 11:07:31,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-07 11:07:31,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-07 11:07:31,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-07 11:07:31,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-07 11:07:31,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-07 11:07:31,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-07 11:07:31,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-07 11:07:31,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-07 11:07:31,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-07 11:07:31,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-07 11:07:31,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-07 11:07:31,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-07 11:07:31,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-07 11:07:31,858 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 ! call(reach_error())) )
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 -> 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1
[2024-11-07 11:07:32,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-07 11:07:32,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-07 11:07:32,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-07 11:07:32,113 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-07 11:07:32,113 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-07 11:07:32,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym.i
[2024-11-07 11:07:33,599 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-07 11:07:33,844 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-07 11:07:33,845 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i
[2024-11-07 11:07:33,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/abd8f3595/5d893590b35d443dab8ecfdad65198cb/FLAG57a0545b0
[2024-11-07 11:07:33,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/abd8f3595/5d893590b35d443dab8ecfdad65198cb
[2024-11-07 11:07:33,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-07 11:07:33,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-07 11:07:33,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-07 11:07:33,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-07 11:07:33,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-07 11:07:33,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:07:33" (1/1) ...
[2024-11-07 11:07:33,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f0e8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:33, skipping insertion in model container
[2024-11-07 11:07:33,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:07:33" (1/1) ...
[2024-11-07 11:07:33,898 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-07 11:07:34,113 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i[30746,30759]
[2024-11-07 11:07:34,125 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-07 11:07:34,137 INFO L200 MainTranslator]: Completed pre-run
[2024-11-07 11:07:34,172 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i[30746,30759]
[2024-11-07 11:07:34,175 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-07 11:07:34,204 INFO L204 MainTranslator]: Completed translation
[2024-11-07 11:07:34,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34 WrapperNode
[2024-11-07 11:07:34,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-07 11:07:34,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-07 11:07:34,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-07 11:07:34,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-07 11:07:34,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,239 INFO L138 Inliner]: procedures = 164, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91
[2024-11-07 11:07:34,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-07 11:07:34,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-07 11:07:34,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-07 11:07:34,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-07 11:07:34,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,258 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 5, 8]. 53 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 1 writes are split as follows [0, 0, 1].
[2024-11-07 11:07:34,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-07 11:07:34,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-07 11:07:34,268 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-07 11:07:34,268 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-07 11:07:34,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (1/1) ...
[2024-11-07 11:07:34,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-07 11:07:34,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:07:34,297 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 11:07:34,303 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 11:07:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure thr1
[2024-11-07 11:07:34,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-07 11:07:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-07 11:07:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock
[2024-11-07 11:07:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-07 11:07:34,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-07 11:07:34,322 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 11:07:34,444 INFO L238 CfgBuilder]: Building ICFG
[2024-11-07 11:07:34,446 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-07 11:07:34,621 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-07 11:07:34,623 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-07 11:07:34,794 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-07 11:07:34,796 INFO L316 CfgBuilder]: Removed 3 assume(true) statements.
[2024-11-07 11:07:34,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:07:34 BoogieIcfgContainer
[2024-11-07 11:07:34,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-07 11:07:34,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-07 11:07:34,800 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-07 11:07:34,803 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-07 11:07:34,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:07:33" (1/3) ...
[2024-11-07 11:07:34,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76433328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:07:34, skipping insertion in model container
[2024-11-07 11:07:34,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:07:34" (2/3) ...
[2024-11-07 11:07:34,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76433328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:07:34, skipping insertion in model container
[2024-11-07 11:07:34,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:07:34" (3/3) ...
[2024-11-07 11:07:34,805 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i
[2024-11-07 11:07:34,816 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-07 11:07:34,816 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-07 11:07:34,816 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-07 11:07:34,845 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-11-07 11:07:34,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 23 transitions, 50 flow
[2024-11-07 11:07:34,923 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events.
[2024-11-07 11:07:34,925 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-07 11:07:34,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place.
[2024-11-07 11:07:34,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 23 transitions, 50 flow
[2024-11-07 11:07:34,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 23 transitions, 50 flow
[2024-11-07 11:07:34,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-07 11:07:34,950 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=LoopHeads, 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;@186abcc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-07 11:07:34,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-11-07 11:07:34,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-07 11:07:34,956 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events.
[2024-11-07 11:07:34,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-07 11:07:34,956 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:34,957 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1]
[2024-11-07 11:07:34,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 11:07:34,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash -531527673, now seen corresponding path program 1 times
[2024-11-07 11:07:34,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:34,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495122582]
[2024-11-07 11:07:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:34,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 11:07:35,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:35,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495122582]
[2024-11-07 11:07:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495122582] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 11:07:35,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 11:07:35,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-07 11:07:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052962350]
[2024-11-07 11:07:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 11:07:35,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-07 11:07:35,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-07 11:07:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-07 11:07:35,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23
[2024-11-07 11:07:35,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 23 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 11:07:35,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:35,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23
[2024-11-07 11:07:35,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:35,299 INFO L124 PetriNetUnfolderBase]: 20/67 cut-off events.
[2024-11-07 11:07:35,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-07 11:07:35,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 67 events. 20/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 16 based on Foata normal form. 3/63 useless extension candidates. Maximal degree in co-relation 105. Up to 51 conditions per place.
[2024-11-07 11:07:35,301 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 14 selfloop transitions, 2 changer transitions 0/22 dead transitions.
[2024-11-07 11:07:35,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 22 transitions, 80 flow
[2024-11-07 11:07:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-07 11:07:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-07 11:07:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions.
[2024-11-07 11:07:35,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711
[2024-11-07 11:07:35,311 INFO L175 Difference]: Start difference. First operand has 23 places, 23 transitions, 50 flow. Second operand 3 states and 37 transitions.
[2024-11-07 11:07:35,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 22 transitions, 80 flow
[2024-11-07 11:07:35,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-11-07 11:07:35,315 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 58 flow
[2024-11-07 11:07:35,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=25, PETRI_TRANSITIONS=22}
[2024-11-07 11:07:35,319 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places.
[2024-11-07 11:07:35,319 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 58 flow
[2024-11-07 11:07:35,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 11:07:35,320 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:35,320 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:07:35,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-07 11:07:35,320 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 11:07:35,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash 211174233, now seen corresponding path program 1 times
[2024-11-07 11:07:35,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251636613]
[2024-11-07 11:07:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:35,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 11:07:35,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:35,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251636613]
[2024-11-07 11:07:35,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251636613] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 11:07:35,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896926950]
[2024-11-07 11:07:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:35,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:35,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:07:35,410 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 11:07:35,412 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 11:07:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:35,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-07 11:07:35,479 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 11:07:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 11:07:35,509 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 11:07:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 11:07:35,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896926950] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 11:07:35,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 11:07:35,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6
[2024-11-07 11:07:35,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638307604]
[2024-11-07 11:07:35,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 11:07:35,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-07 11:07:35,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:35,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-07 11:07:35,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-07 11:07:35,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23
[2024-11-07 11:07:35,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 58 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 11:07:35,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:35,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23
[2024-11-07 11:07:35,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:35,612 INFO L124 PetriNetUnfolderBase]: 20/70 cut-off events.
[2024-11-07 11:07:35,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-07 11:07:35,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 70 events. 20/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 16 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 127. Up to 51 conditions per place.
[2024-11-07 11:07:35,615 INFO L140 encePairwiseOnDemand]: 20/23 looper letters, 14 selfloop transitions, 5 changer transitions 0/25 dead transitions.
[2024-11-07 11:07:35,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 108 flow
[2024-11-07 11:07:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-07 11:07:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-07 11:07:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 58 transitions.
[2024-11-07 11:07:35,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375
[2024-11-07 11:07:35,617 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 58 flow. Second operand 6 states and 58 transitions.
[2024-11-07 11:07:35,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 108 flow
[2024-11-07 11:07:35,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 104 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-11-07 11:07:35,619 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 90 flow
[2024-11-07 11:07:35,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=25}
[2024-11-07 11:07:35,620 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places.
[2024-11-07 11:07:35,621 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 90 flow
[2024-11-07 11:07:35,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 11:07:35,622 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:35,622 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1]
[2024-11-07 11:07:35,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-07 11:07:35,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:35,830 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 11:07:35,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:35,830 INFO L85 PathProgramCache]: Analyzing trace with hash 693030023, now seen corresponding path program 2 times
[2024-11-07 11:07:35,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:35,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214274778]
[2024-11-07 11:07:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:35,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 11:07:35,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214274778]
[2024-11-07 11:07:35,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214274778] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 11:07:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916241532]
[2024-11-07 11:07:35,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-07 11:07:35,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:35,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:07:35,933 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 11:07:35,941 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 11:07:35,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-07 11:07:35,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 11:07:35,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-07 11:07:35,998 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 11:07:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 11:07:36,012 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 11:07:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-07 11:07:36,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916241532] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 11:07:36,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 11:07:36,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8
[2024-11-07 11:07:36,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918400762]
[2024-11-07 11:07:36,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 11:07:36,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-07 11:07:36,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:36,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-07 11:07:36,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2024-11-07 11:07:36,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23
[2024-11-07 11:07:36,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 90 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-07 11:07:36,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:36,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23
[2024-11-07 11:07:36,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:36,098 INFO L124 PetriNetUnfolderBase]: 20/72 cut-off events.
[2024-11-07 11:07:36,099 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES.
[2024-11-07 11:07:36,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 72 events. 20/72 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 16 based on Foata normal form. 2/68 useless extension candidates. Maximal degree in co-relation 118. Up to 51 conditions per place.
[2024-11-07 11:07:36,100 INFO L140 encePairwiseOnDemand]: 20/23 looper letters, 14 selfloop transitions, 7 changer transitions 0/27 dead transitions.
[2024-11-07 11:07:36,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 144 flow
[2024-11-07 11:07:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-07 11:07:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-07 11:07:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 71 transitions.
[2024-11-07 11:07:36,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3858695652173913
[2024-11-07 11:07:36,101 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 90 flow. Second operand 8 states and 71 transitions.
[2024-11-07 11:07:36,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 144 flow
[2024-11-07 11:07:36,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 130 flow, removed 6 selfloop flow, removed 1 redundant places.
[2024-11-07 11:07:36,102 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 112 flow
[2024-11-07 11:07:36,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=27}
[2024-11-07 11:07:36,103 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 17 predicate places.
[2024-11-07 11:07:36,103 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 112 flow
[2024-11-07 11:07:36,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-07 11:07:36,104 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:36,104 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1, 1, 1]
[2024-11-07 11:07:36,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-07 11:07:36,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:36,305 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 11:07:36,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1739003591, now seen corresponding path program 3 times
[2024-11-07 11:07:36,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:36,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016202411]
[2024-11-07 11:07:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:36,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-07 11:07:36,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-07 11:07:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-07 11:07:36,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-07 11:07:36,396 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-07 11:07:36,397 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining)
[2024-11-07 11:07:36,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining)
[2024-11-07 11:07:36,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining)
[2024-11-07 11:07:36,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-07 11:07:36,399 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1]
[2024-11-07 11:07:36,401 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-11-07 11:07:36,401 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2024-11-07 11:07:36,446 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-11-07 11:07:36,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 39 transitions, 88 flow
[2024-11-07 11:07:36,456 INFO L124 PetriNetUnfolderBase]: 5/44 cut-off events.
[2024-11-07 11:07:36,456 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-07 11:07:36,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 44 events. 5/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place.
[2024-11-07 11:07:36,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 39 transitions, 88 flow
[2024-11-07 11:07:36,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 39 transitions, 88 flow
[2024-11-07 11:07:36,458 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-07 11:07:36,458 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=LoopHeads, 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;@186abcc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-07 11:07:36,459 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2024-11-07 11:07:36,463 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-07 11:07:36,463 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events.
[2024-11-07 11:07:36,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-07 11:07:36,463 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:36,463 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1]
[2024-11-07 11:07:36,463 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2024-11-07 11:07:36,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1043353845, now seen corresponding path program 1 times
[2024-11-07 11:07:36,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:36,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091087345]
[2024-11-07 11:07:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-07 11:07:36,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:36,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091087345]
[2024-11-07 11:07:36,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091087345] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 11:07:36,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 11:07:36,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-07 11:07:36,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680701532]
[2024-11-07 11:07:36,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 11:07:36,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-07 11:07:36,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:36,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-07 11:07:36,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-07 11:07:36,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39
[2024-11-07 11:07:36,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 11:07:36,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:36,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39
[2024-11-07 11:07:36,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:36,637 INFO L124 PetriNetUnfolderBase]: 434/922 cut-off events.
[2024-11-07 11:07:36,639 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES.
[2024-11-07 11:07:36,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 922 events. 434/922 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4770 event pairs, 376 based on Foata normal form. 51/864 useless extension candidates. Maximal degree in co-relation 1014. Up to 708 conditions per place.
[2024-11-07 11:07:36,650 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 24 selfloop transitions, 2 changer transitions 0/37 dead transitions.
[2024-11-07 11:07:36,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 136 flow
[2024-11-07 11:07:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-07 11:07:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-07 11:07:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions.
[2024-11-07 11:07:36,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384
[2024-11-07 11:07:36,652 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 88 flow. Second operand 3 states and 63 transitions.
[2024-11-07 11:07:36,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 136 flow
[2024-11-07 11:07:36,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-11-07 11:07:36,654 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 94 flow
[2024-11-07 11:07:36,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=37}
[2024-11-07 11:07:36,657 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places.
[2024-11-07 11:07:36,657 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 94 flow
[2024-11-07 11:07:36,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 11:07:36,657 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:36,657 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:07:36,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-07 11:07:36,658 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2024-11-07 11:07:36,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:36,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2137667530, now seen corresponding path program 1 times
[2024-11-07 11:07:36,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:36,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338436952]
[2024-11-07 11:07:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:36,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-07 11:07:36,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:36,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338436952]
[2024-11-07 11:07:36,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338436952] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 11:07:36,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432771858]
[2024-11-07 11:07:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:36,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:36,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:07:36,720 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 11:07:36,721 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 11:07:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:36,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-07 11:07:36,799 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 11:07:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-07 11:07:36,812 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 11:07:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-07 11:07:36,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432771858] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 11:07:36,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 11:07:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6
[2024-11-07 11:07:36,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835058072]
[2024-11-07 11:07:36,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 11:07:36,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-07 11:07:36,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-07 11:07:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-07 11:07:36,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39
[2024-11-07 11:07:36,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-07 11:07:36,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:36,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39
[2024-11-07 11:07:36,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:36,996 INFO L124 PetriNetUnfolderBase]: 434/925 cut-off events.
[2024-11-07 11:07:36,996 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES.
[2024-11-07 11:07:36,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 925 events. 434/925 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4770 event pairs, 376 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 1666. Up to 708 conditions per place.
[2024-11-07 11:07:37,006 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 24 selfloop transitions, 5 changer transitions 0/40 dead transitions.
[2024-11-07 11:07:37,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 164 flow
[2024-11-07 11:07:37,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-07 11:07:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-07 11:07:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions.
[2024-11-07 11:07:37,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188
[2024-11-07 11:07:37,012 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 94 flow. Second operand 6 states and 98 transitions.
[2024-11-07 11:07:37,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 164 flow
[2024-11-07 11:07:37,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 160 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-11-07 11:07:37,013 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 126 flow
[2024-11-07 11:07:37,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=48, PETRI_TRANSITIONS=40}
[2024-11-07 11:07:37,014 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places.
[2024-11-07 11:07:37,014 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 126 flow
[2024-11-07 11:07:37,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-07 11:07:37,014 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:37,014 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1]
[2024-11-07 11:07:37,034 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 11:07:37,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:37,219 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2024-11-07 11:07:37,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1327636939, now seen corresponding path program 2 times
[2024-11-07 11:07:37,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:37,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057946760]
[2024-11-07 11:07:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-07 11:07:37,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057946760]
[2024-11-07 11:07:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057946760] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 11:07:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459023241]
[2024-11-07 11:07:37,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-07 11:07:37,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:37,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:07:37,306 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 11:07:37,309 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 11:07:37,370 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-07 11:07:37,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 11:07:37,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-07 11:07:37,372 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 11:07:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-07 11:07:37,386 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 11:07:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-07 11:07:37,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459023241] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 11:07:37,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 11:07:37,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8
[2024-11-07 11:07:37,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279505763]
[2024-11-07 11:07:37,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 11:07:37,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-07 11:07:37,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:37,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-07 11:07:37,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2024-11-07 11:07:37,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39
[2024-11-07 11:07:37,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 126 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 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 11:07:37,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:37,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39
[2024-11-07 11:07:37,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:37,620 INFO L124 PetriNetUnfolderBase]: 434/927 cut-off events.
[2024-11-07 11:07:37,620 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES.
[2024-11-07 11:07:37,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700 conditions, 927 events. 434/927 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4768 event pairs, 376 based on Foata normal form. 2/821 useless extension candidates. Maximal degree in co-relation 1657. Up to 708 conditions per place.
[2024-11-07 11:07:37,624 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 24 selfloop transitions, 7 changer transitions 0/42 dead transitions.
[2024-11-07 11:07:37,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 42 transitions, 200 flow
[2024-11-07 11:07:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-07 11:07:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-07 11:07:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions.
[2024-11-07 11:07:37,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38782051282051283
[2024-11-07 11:07:37,627 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 126 flow. Second operand 8 states and 121 transitions.
[2024-11-07 11:07:37,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 42 transitions, 200 flow
[2024-11-07 11:07:37,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 186 flow, removed 6 selfloop flow, removed 1 redundant places.
[2024-11-07 11:07:37,630 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 148 flow
[2024-11-07 11:07:37,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=148, PETRI_PLACES=56, PETRI_TRANSITIONS=42}
[2024-11-07 11:07:37,630 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places.
[2024-11-07 11:07:37,630 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 148 flow
[2024-11-07 11:07:37,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 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 11:07:37,631 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:37,631 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1]
[2024-11-07 11:07:37,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-07 11:07:37,835 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,SelfDestructingSolverStorable6
[2024-11-07 11:07:37,837 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2024-11-07 11:07:37,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash -487823147, now seen corresponding path program 3 times
[2024-11-07 11:07:37,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334546278]
[2024-11-07 11:07:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-07 11:07:37,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-07 11:07:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-07 11:07:37,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-07 11:07:37,873 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-07 11:07:37,873 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining)
[2024-11-07 11:07:37,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining)
[2024-11-07 11:07:37,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining)
[2024-11-07 11:07:37,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining)
[2024-11-07 11:07:37,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-07 11:07:37,873 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1]
[2024-11-07 11:07:37,874 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-11-07 11:07:37,874 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2024-11-07 11:07:37,903 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-11-07 11:07:37,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 55 transitions, 128 flow
[2024-11-07 11:07:37,911 INFO L124 PetriNetUnfolderBase]: 7/63 cut-off events.
[2024-11-07 11:07:37,911 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES.
[2024-11-07 11:07:37,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 7/63 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place.
[2024-11-07 11:07:37,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 55 transitions, 128 flow
[2024-11-07 11:07:37,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 55 transitions, 128 flow
[2024-11-07 11:07:37,913 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-07 11:07:37,914 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=LoopHeads, 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;@186abcc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-07 11:07:37,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2024-11-07 11:07:37,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-07 11:07:37,917 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events.
[2024-11-07 11:07:37,918 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES.
[2024-11-07 11:07:37,918 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:37,918 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:07:37,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2024-11-07 11:07:37,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:37,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1422539676, now seen corresponding path program 1 times
[2024-11-07 11:07:37,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:37,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593093084]
[2024-11-07 11:07:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:37,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-07 11:07:37,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:37,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593093084]
[2024-11-07 11:07:37,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593093084] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 11:07:37,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 11:07:37,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-07 11:07:37,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727165489]
[2024-11-07 11:07:37,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 11:07:37,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-07 11:07:37,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:37,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-07 11:07:37,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-07 11:07:37,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55
[2024-11-07 11:07:37,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 11:07:37,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:37,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55
[2024-11-07 11:07:37,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:38,897 INFO L124 PetriNetUnfolderBase]: 6347/10809 cut-off events.
[2024-11-07 11:07:38,897 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES.
[2024-11-07 11:07:38,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19975 conditions, 10809 events. 6347/10809 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 74953 event pairs, 5560 based on Foata normal form. 713/10235 useless extension candidates. Maximal degree in co-relation 1663. Up to 8808 conditions per place.
[2024-11-07 11:07:38,989 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 34 selfloop transitions, 2 changer transitions 0/52 dead transitions.
[2024-11-07 11:07:38,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 194 flow
[2024-11-07 11:07:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-07 11:07:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-07 11:07:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions.
[2024-11-07 11:07:38,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394
[2024-11-07 11:07:38,991 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 128 flow. Second operand 3 states and 89 transitions.
[2024-11-07 11:07:38,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 194 flow
[2024-11-07 11:07:38,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 192 flow, removed 1 selfloop flow, removed 0 redundant places.
[2024-11-07 11:07:38,993 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 130 flow
[2024-11-07 11:07:38,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=52}
[2024-11-07 11:07:38,993 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places.
[2024-11-07 11:07:38,993 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 130 flow
[2024-11-07 11:07:38,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 11:07:38,994 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:38,994 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:07:38,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-07 11:07:38,994 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2024-11-07 11:07:38,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:38,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1561247080, now seen corresponding path program 1 times
[2024-11-07 11:07:38,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:38,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494096571]
[2024-11-07 11:07:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:38,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-07 11:07:39,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:39,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494096571]
[2024-11-07 11:07:39,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494096571] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 11:07:39,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342819118]
[2024-11-07 11:07:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:39,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:07:39,028 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 11:07:39,042 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 11:07:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:39,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-07 11:07:39,133 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 11:07:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-07 11:07:39,144 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 11:07:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-07 11:07:39,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342819118] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 11:07:39,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 11:07:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6
[2024-11-07 11:07:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819142191]
[2024-11-07 11:07:39,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 11:07:39,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-07 11:07:39,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-07 11:07:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-07 11:07:39,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55
[2024-11-07 11:07:39,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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 11:07:39,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:39,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55
[2024-11-07 11:07:39,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:40,097 INFO L124 PetriNetUnfolderBase]: 6347/10812 cut-off events.
[2024-11-07 11:07:40,098 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES.
[2024-11-07 11:07:40,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19910 conditions, 10812 events. 6347/10812 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 74912 event pairs, 5560 based on Foata normal form. 0/9525 useless extension candidates. Maximal degree in co-relation 19896. Up to 8808 conditions per place.
[2024-11-07 11:07:40,145 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 34 selfloop transitions, 5 changer transitions 0/55 dead transitions.
[2024-11-07 11:07:40,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 220 flow
[2024-11-07 11:07:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-07 11:07:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-07 11:07:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions.
[2024-11-07 11:07:40,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815
[2024-11-07 11:07:40,147 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 130 flow. Second operand 6 states and 138 transitions.
[2024-11-07 11:07:40,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 220 flow
[2024-11-07 11:07:40,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-11-07 11:07:40,148 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 162 flow
[2024-11-07 11:07:40,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=64, PETRI_TRANSITIONS=55}
[2024-11-07 11:07:40,149 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places.
[2024-11-07 11:07:40,149 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 162 flow
[2024-11-07 11:07:40,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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 11:07:40,149 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:40,149 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:07:40,163 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 11:07:40,355 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 11:07:40,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2024-11-07 11:07:40,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:40,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2101195108, now seen corresponding path program 2 times
[2024-11-07 11:07:40,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:40,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265333784]
[2024-11-07 11:07:40,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:40,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-07 11:07:40,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:40,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265333784]
[2024-11-07 11:07:40,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265333784] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 11:07:40,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517057312]
[2024-11-07 11:07:40,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-07 11:07:40,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:40,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:07:40,430 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 11:07:40,436 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 11:07:40,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-07 11:07:40,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 11:07:40,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-07 11:07:40,510 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 11:07:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-07 11:07:40,523 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 11:07:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-07 11:07:40,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517057312] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 11:07:40,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 11:07:40,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8
[2024-11-07 11:07:40,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149904173]
[2024-11-07 11:07:40,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 11:07:40,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-07 11:07:40,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:40,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-07 11:07:40,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2024-11-07 11:07:40,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55
[2024-11-07 11:07:40,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 162 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 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 11:07:40,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:40,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55
[2024-11-07 11:07:40,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:41,134 INFO L124 PetriNetUnfolderBase]: 6347/10814 cut-off events.
[2024-11-07 11:07:41,134 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES.
[2024-11-07 11:07:41,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19931 conditions, 10814 events. 6347/10814 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 74893 event pairs, 5560 based on Foata normal form. 2/9530 useless extension candidates. Maximal degree in co-relation 19887. Up to 8808 conditions per place.
[2024-11-07 11:07:41,176 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 34 selfloop transitions, 7 changer transitions 0/57 dead transitions.
[2024-11-07 11:07:41,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 256 flow
[2024-11-07 11:07:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-07 11:07:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-07 11:07:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions.
[2024-11-07 11:07:41,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3886363636363636
[2024-11-07 11:07:41,177 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 162 flow. Second operand 8 states and 171 transitions.
[2024-11-07 11:07:41,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 256 flow
[2024-11-07 11:07:41,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 57 transitions, 242 flow, removed 6 selfloop flow, removed 1 redundant places.
[2024-11-07 11:07:41,179 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 184 flow
[2024-11-07 11:07:41,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=184, PETRI_PLACES=72, PETRI_TRANSITIONS=57}
[2024-11-07 11:07:41,180 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places.
[2024-11-07 11:07:41,180 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 184 flow
[2024-11-07 11:07:41,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 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 11:07:41,180 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:41,180 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:07:41,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-07 11:07:41,380 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 11:07:41,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2024-11-07 11:07:41,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash 308688868, now seen corresponding path program 3 times
[2024-11-07 11:07:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540270337]
[2024-11-07 11:07:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-07 11:07:41,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-07 11:07:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-07 11:07:41,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-07 11:07:41,403 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-07 11:07:41,403 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining)
[2024-11-07 11:07:41,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining)
[2024-11-07 11:07:41,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining)
[2024-11-07 11:07:41,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining)
[2024-11-07 11:07:41,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining)
[2024-11-07 11:07:41,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-07 11:07:41,403 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1]
[2024-11-07 11:07:41,403 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-11-07 11:07:41,403 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2024-11-07 11:07:41,430 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-11-07 11:07:41,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 71 transitions, 170 flow
[2024-11-07 11:07:41,436 INFO L124 PetriNetUnfolderBase]: 9/82 cut-off events.
[2024-11-07 11:07:41,436 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES.
[2024-11-07 11:07:41,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 82 events. 9/82 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 211 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 73. Up to 5 conditions per place.
[2024-11-07 11:07:41,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 71 transitions, 170 flow
[2024-11-07 11:07:41,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 71 transitions, 170 flow
[2024-11-07 11:07:41,437 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-07 11:07:41,438 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=LoopHeads, 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;@186abcc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-07 11:07:41,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2024-11-07 11:07:41,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-07 11:07:41,441 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events.
[2024-11-07 11:07:41,441 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES.
[2024-11-07 11:07:41,441 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:41,441 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:07:41,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2024-11-07 11:07:41,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:41,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1001218811, now seen corresponding path program 1 times
[2024-11-07 11:07:41,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:41,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592582170]
[2024-11-07 11:07:41,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:41,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:41,462 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 11:07:41,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592582170]
[2024-11-07 11:07:41,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592582170] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 11:07:41,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 11:07:41,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-07 11:07:41,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308630187]
[2024-11-07 11:07:41,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 11:07:41,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-07 11:07:41,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:41,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-07 11:07:41,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-07 11:07:41,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 71
[2024-11-07 11:07:41,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 11:07:41,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:41,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 71
[2024-11-07 11:07:41,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:48,039 INFO L124 PetriNetUnfolderBase]: 79247/119475 cut-off events.
[2024-11-07 11:07:48,039 INFO L125 PetriNetUnfolderBase]: For 9589/9589 co-relation queries the response was YES.
[2024-11-07 11:07:48,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224870 conditions, 119475 events. 79247/119475 cut-off events. For 9589/9589 co-relation queries the response was YES. Maximal size of possible extension queue 3779. Compared 957964 event pairs, 69712 based on Foata normal form. 8858/114257 useless extension candidates. Maximal degree in co-relation 20055. Up to 101391 conditions per place.
[2024-11-07 11:07:48,699 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 44 selfloop transitions, 2 changer transitions 0/67 dead transitions.
[2024-11-07 11:07:48,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 254 flow
[2024-11-07 11:07:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-07 11:07:48,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-07 11:07:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions.
[2024-11-07 11:07:48,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.539906103286385
[2024-11-07 11:07:48,700 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 170 flow. Second operand 3 states and 115 transitions.
[2024-11-07 11:07:48,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 254 flow
[2024-11-07 11:07:48,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 67 transitions, 248 flow, removed 3 selfloop flow, removed 0 redundant places.
[2024-11-07 11:07:48,706 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 166 flow
[2024-11-07 11:07:48,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=67}
[2024-11-07 11:07:48,707 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places.
[2024-11-07 11:07:48,707 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 166 flow
[2024-11-07 11:07:48,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 11:07:48,707 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:48,707 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:07:48,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-11-07 11:07:48,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2024-11-07 11:07:48,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash 658252622, now seen corresponding path program 1 times
[2024-11-07 11:07:48,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:48,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709279232]
[2024-11-07 11:07:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:48,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:48,744 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 11:07:48,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:48,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709279232]
[2024-11-07 11:07:48,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709279232] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 11:07:48,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120541710]
[2024-11-07 11:07:48,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:48,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:48,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:07:48,748 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 11:07:48,750 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 11:07:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:48,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-07 11:07:48,823 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 11:07:48,831 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 11:07:48,831 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 11:07:48,843 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 11:07:48,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120541710] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 11:07:48,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 11:07:48,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6
[2024-11-07 11:07:48,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60637104]
[2024-11-07 11:07:48,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 11:07:48,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-07 11:07:48,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:48,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-07 11:07:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-07 11:07:48,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 71
[2024-11-07 11:07:48,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 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 11:07:48,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:48,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 71
[2024-11-07 11:07:48,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:07:56,619 INFO L124 PetriNetUnfolderBase]: 79247/119478 cut-off events.
[2024-11-07 11:07:56,619 INFO L125 PetriNetUnfolderBase]: For 4319/4319 co-relation queries the response was YES.
[2024-11-07 11:07:56,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223347 conditions, 119478 events. 79247/119478 cut-off events. For 4319/4319 co-relation queries the response was YES. Maximal size of possible extension queue 3779. Compared 957923 event pairs, 69712 based on Foata normal form. 0/105402 useless extension candidates. Maximal degree in co-relation 223332. Up to 101391 conditions per place.
[2024-11-07 11:07:57,377 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 44 selfloop transitions, 5 changer transitions 0/70 dead transitions.
[2024-11-07 11:07:57,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 276 flow
[2024-11-07 11:07:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-07 11:07:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-07 11:07:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions.
[2024-11-07 11:07:57,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41784037558685444
[2024-11-07 11:07:57,382 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 166 flow. Second operand 6 states and 178 transitions.
[2024-11-07 11:07:57,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 276 flow
[2024-11-07 11:07:57,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 272 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-11-07 11:07:57,401 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 198 flow
[2024-11-07 11:07:57,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=80, PETRI_TRANSITIONS=70}
[2024-11-07 11:07:57,403 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places.
[2024-11-07 11:07:57,403 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 198 flow
[2024-11-07 11:07:57,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 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 11:07:57,403 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:07:57,403 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:07:57,420 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 11:07:57,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:57,609 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2024-11-07 11:07:57,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:07:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash 159670203, now seen corresponding path program 2 times
[2024-11-07 11:07:57,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:07:57,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673356551]
[2024-11-07 11:07:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:07:57,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:07:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:07:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 11:07:57,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:07:57,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673356551]
[2024-11-07 11:07:57,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673356551] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 11:07:57,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414890811]
[2024-11-07 11:07:57,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-07 11:07:57,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:07:57,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:07:57,699 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 11:07:57,882 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 11:07:57,960 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-07 11:07:57,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-07 11:07:57,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-07 11:07:57,961 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 11:07:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-11-07 11:07:57,978 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-07 11:07:57,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414890811] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 11:07:57,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-07 11:07:57,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2024-11-07 11:07:57,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335555066]
[2024-11-07 11:07:57,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 11:07:57,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-07 11:07:57,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:07:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-07 11:07:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2024-11-07 11:07:57,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 71
[2024-11-07 11:07:57,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 11:07:57,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:07:57,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 71
[2024-11-07 11:07:57,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-07 11:08:06,506 INFO L124 PetriNetUnfolderBase]: 99317/141309 cut-off events.
[2024-11-07 11:08:06,506 INFO L125 PetriNetUnfolderBase]: For 4035/4035 co-relation queries the response was YES.
[2024-11-07 11:08:07,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270727 conditions, 141309 events. 99317/141309 cut-off events. For 4035/4035 co-relation queries the response was YES. Maximal size of possible extension queue 3804. Compared 1042822 event pairs, 37636 based on Foata normal form. 0/124816 useless extension candidates. Maximal degree in co-relation 270690. Up to 67590 conditions per place.
[2024-11-07 11:08:07,902 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 81 selfloop transitions, 3 changer transitions 0/102 dead transitions.
[2024-11-07 11:08:07,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 445 flow
[2024-11-07 11:08:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-07 11:08:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-07 11:08:07,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions.
[2024-11-07 11:08:07,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.647887323943662
[2024-11-07 11:08:07,903 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 198 flow. Second operand 3 states and 138 transitions.
[2024-11-07 11:08:07,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 445 flow
[2024-11-07 11:08:07,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 431 flow, removed 6 selfloop flow, removed 1 redundant places.
[2024-11-07 11:08:07,911 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 197 flow
[2024-11-07 11:08:07,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=80, PETRI_TRANSITIONS=70}
[2024-11-07 11:08:07,911 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places.
[2024-11-07 11:08:07,911 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 197 flow
[2024-11-07 11:08:07,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 11:08:07,912 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-07 11:08:07,912 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 11:08:07,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-07 11:08:08,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-11-07 11:08:08,116 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2024-11-07 11:08:08,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 11:08:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1992933710, now seen corresponding path program 1 times
[2024-11-07 11:08:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 11:08:08,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880442971]
[2024-11-07 11:08:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:08:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 11:08:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:08:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-11-07 11:08:08,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 11:08:08,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880442971]
[2024-11-07 11:08:08,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880442971] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-07 11:08:08,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141295117]
[2024-11-07 11:08:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 11:08:08,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-07 11:08:08,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 11:08:08,181 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 11:08:08,183 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 11:08:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 11:08:08,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-07 11:08:08,265 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-07 11:08:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-11-07 11:08:08,281 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-07 11:08:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-11-07 11:08:08,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141295117] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-07 11:08:08,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-07 11:08:08,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8
[2024-11-07 11:08:08,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666111579]
[2024-11-07 11:08:08,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-07 11:08:08,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-07 11:08:08,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 11:08:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-07 11:08:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2024-11-07 11:08:08,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 71
[2024-11-07 11:08:08,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 197 flow. Second operand has 9 states, 9 states have (on average 22.88888888888889) internal successors, (206), 9 states have internal predecessors, (206), 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 11:08:08,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-07 11:08:08,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 71
[2024-11-07 11:08:08,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand