./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 01849734
Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52eeb5cce5645e9dacc261319eae3d665b5cc432ff3ddd2ef39502a44996e68d
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-0184973-m
[2025-04-24 16:50:17,103 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-24 16:50:17,179 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf
[2025-04-24 16:50:17,183 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-24 16:50:17,183 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-24 16:50:17,199 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-24 16:50:17,200 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-24 16:50:17,200 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-24 16:50:17,200 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-24 16:50:17,200 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-24 16:50:17,200 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-24 16:50:17,200 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-24 16:50:17,200 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-24 16:50:17,201 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * sizeof long=4
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * sizeof long double=12
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2025-04-24 16:50:17,201 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-04-24 16:50:17,201 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-24 16:50:17,201 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-04-24 16:50:17,202 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * DFS Order used in POR=LOOP_LOCKSTEP
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER
[2025-04-24 16:50:17,202 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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/releaseScripts/default/UGemCutter-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 -> GemCutter
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 -> 52eeb5cce5645e9dacc261319eae3d665b5cc432ff3ddd2ef39502a44996e68d
[2025-04-24 16:50:17,435 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-24 16:50:17,441 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-24 16:50:17,443 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-24 16:50:17,443 INFO  L270        PluginConnector]: Initializing CDTParser...
[2025-04-24 16:50:17,444 INFO  L274        PluginConnector]: CDTParser initialized
[2025-04-24 16:50:17,445 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c
[2025-04-24 16:50:18,677 INFO  L538              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/2a11e487f/789ff0b0b14e47ebb052c93e3a0e3e0c/FLAGc2bba9409
[2025-04-24 16:50:18,838 INFO  L389              CDTParser]: Found 1 translation units.
[2025-04-24 16:50:18,838 INFO  L178              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c
[2025-04-24 16:50:18,845 INFO  L432              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/2a11e487f/789ff0b0b14e47ebb052c93e3a0e3e0c/FLAGc2bba9409
[2025-04-24 16:50:19,677 INFO  L440              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/2a11e487f/789ff0b0b14e47ebb052c93e3a0e3e0c
[2025-04-24 16:50:19,679 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-24 16:50:19,680 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2025-04-24 16:50:19,681 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2025-04-24 16:50:19,681 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2025-04-24 16:50:19,683 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2025-04-24 16:50:19,684 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,685 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e7c00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19, skipping insertion in model container
[2025-04-24 16:50:19,685 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,694 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2025-04-24 16:50:19,813 WARN  L116    LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c[1875,1888]
[2025-04-24 16:50:19,816 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-04-24 16:50:19,821 INFO  L200         MainTranslator]: Completed pre-run
[2025-04-24 16:50:19,837 WARN  L116    LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c[1875,1888]
[2025-04-24 16:50:19,838 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-04-24 16:50:19,846 INFO  L204         MainTranslator]: Completed translation
[2025-04-24 16:50:19,847 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19 WrapperNode
[2025-04-24 16:50:19,847 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2025-04-24 16:50:19,848 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2025-04-24 16:50:19,848 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2025-04-24 16:50:19,848 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2025-04-24 16:50:19,852 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,857 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,867 INFO  L138                Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47
[2025-04-24 16:50:19,867 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2025-04-24 16:50:19,869 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-24 16:50:19,869 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-24 16:50:19,869 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-24 16:50:19,873 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,873 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,875 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,879 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,881 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,881 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,883 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,887 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,887 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,889 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-24 16:50:19,890 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-24 16:50:19,891 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-24 16:50:19,891 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-24 16:50:19,892 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (1/1) ...
[2025-04-24 16:50:19,896 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-04-24 16:50:19,904 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2025-04-24 16:50:19,915 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2025-04-24 16:50:19,918 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2025-04-24 16:50:19,938 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2025-04-24 16:50:19,938 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2025-04-24 16:50:19,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2025-04-24 16:50:19,938 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2025-04-24 16:50:19,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2025-04-24 16:50:19,938 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2025-04-24 16:50:19,939 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2025-04-24 16:50:19,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2025-04-24 16:50:19,940 WARN  L203             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2025-04-24 16:50:19,999 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-24 16:50:20,000 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-24 16:50:20,099 INFO  L279             CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2025-04-24 16:50:20,100 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-24 16:50:20,176 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2025-04-24 16:50:20,177 INFO  L312             CfgBuilder]: Removed 0 assume(true) statements.
[2025-04-24 16:50:20,177 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:50:20 BoogieIcfgContainer
[2025-04-24 16:50:20,177 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-24 16:50:20,179 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-24 16:50:20,179 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-24 16:50:20,182 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-24 16:50:20,182 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 04:50:19" (1/3) ...
[2025-04-24 16:50:20,183 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc4a7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:50:20, skipping insertion in model container
[2025-04-24 16:50:20,183 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:50:19" (2/3) ...
[2025-04-24 16:50:20,183 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc4a7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:50:20, skipping insertion in model container
[2025-04-24 16:50:20,183 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:50:20" (3/3) ...
[2025-04-24 16:50:20,185 INFO  L128   eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c
[2025-04-24 16:50:20,194 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-24 16:50:20,195 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp1x3.wvr.c that has 3 procedures, 17 locations, 16 edges, 1 initial locations, 2 loop locations, and 1 error locations.
[2025-04-24 16:50:20,196 INFO  L490   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2025-04-24 16:50:20,228 INFO  L143    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2025-04-24 16:50:20,256 INFO  L125   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-24 16:50:20,256 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2025-04-24 16:50:20,256 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2025-04-24 16:50:20,259 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2025-04-24 16:50:20,260 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2025-04-24 16:50:20,306 INFO  L177   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2025-04-24 16:50:20,318 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ========
[2025-04-24 16:50:20,322 INFO  L340      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=PARTIAL_ORDER_FA, 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;@1d14c1b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-24 16:50:20,323 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2025-04-24 16:50:20,367 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2025-04-24 16:50:20,367 INFO  L305   artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2025-04-24 16:50:20,368 INFO  L139   ounterexampleChecker]: Examining path program with hash -1808547007, occurence #1
[2025-04-24 16:50:20,368 INFO  L141   ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping...
[2025-04-24 16:50:20,368 INFO  L316   artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2025-04-24 16:50:20,371 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-24 16:50:20,372 INFO  L85        PathProgramCache]: Analyzing trace with hash 978771431, now seen corresponding path program 1 times
[2025-04-24 16:50:20,376 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-24 16:50:20,376 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104798498]
[2025-04-24 16:50:20,376 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-24 16:50:20,377 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-24 16:50:20,432 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes.
[2025-04-24 16:50:20,452 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements.
[2025-04-24 16:50:20,452 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-24 16:50:20,452 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-24 16:50:20,598 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:50:20,598 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-24 16:50:20,598 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104798498]
[2025-04-24 16:50:20,599 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104798498] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-24 16:50:20,599 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-24 16:50:20,599 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2025-04-24 16:50:20,600 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440580874]
[2025-04-24 16:50:20,600 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-24 16:50:20,602 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2025-04-24 16:50:20,602 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-24 16:50:20,615 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2025-04-24 16:50:20,615 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2025-04-24 16:50:20,615 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-04-24 16:50:20,632 INFO  L485      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2025-04-24 16:50:20,633 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-04-24 16:50:20,634 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2025-04-24 16:50:20,676 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2025-04-24 16:50:20,677 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2025-04-24 16:50:20,677 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2025-04-24 16:50:20,677 INFO  L305   artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2025-04-24 16:50:20,677 INFO  L139   ounterexampleChecker]: Examining path program with hash -1808547007, occurence #2
[2025-04-24 16:50:20,677 INFO  L145   ounterexampleChecker]: Trying to synthesize and prove commutativity condition.
[2025-04-24 16:50:20,677 INFO  L166   ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1
[2025-04-24 16:50:20,680 WARN  L190   ounterexampleChecker]: Statements were already independent.
[2025-04-24 16:50:20,680 INFO  L166   ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4
[2025-04-24 16:50:20,681 WARN  L190   ounterexampleChecker]: Statements were already independent.
[2025-04-24 16:50:20,681 INFO  L166   ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11
[2025-04-24 16:50:20,681 WARN  L190   ounterexampleChecker]: Statements were already independent.
[2025-04-24 16:50:20,681 WARN  L214   ounterexampleChecker]: Failed to synthesize and prove commutativity condition.
[2025-04-24 16:50:20,681 INFO  L316   artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2025-04-24 16:50:20,682 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-24 16:50:20,682 INFO  L85        PathProgramCache]: Analyzing trace with hash 276063901, now seen corresponding path program 1 times
[2025-04-24 16:50:20,682 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-24 16:50:20,682 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815388847]
[2025-04-24 16:50:20,682 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-24 16:50:20,682 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-24 16:50:20,690 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes.
[2025-04-24 16:50:20,703 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements.
[2025-04-24 16:50:20,705 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-24 16:50:20,705 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-24 16:50:20,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:50:20,778 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-24 16:50:20,778 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815388847]
[2025-04-24 16:50:20,778 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815388847] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-24 16:50:20,778 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-24 16:50:20,778 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2025-04-24 16:50:20,779 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538186297]
[2025-04-24 16:50:20,779 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-24 16:50:20,779 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-04-24 16:50:20,779 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-24 16:50:20,780 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-04-24 16:50:20,781 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-24 16:50:20,781 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-04-24 16:50:20,781 INFO  L485      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2025-04-24 16:50:20,781 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-04-24 16:50:20,781 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2025-04-24 16:50:20,781 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2025-04-24 16:50:20,848 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2025-04-24 16:50:20,850 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-04-24 16:50:20,850 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-24 16:50:20,850 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2025-04-24 16:50:20,850 INFO  L305   artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2025-04-24 16:50:20,850 INFO  L139   ounterexampleChecker]: Examining path program with hash 796327545, occurence #1
[2025-04-24 16:50:20,850 INFO  L141   ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping...
[2025-04-24 16:50:20,850 INFO  L316   artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2025-04-24 16:50:20,851 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-24 16:50:20,851 INFO  L85        PathProgramCache]: Analyzing trace with hash 599376169, now seen corresponding path program 1 times
[2025-04-24 16:50:20,851 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-24 16:50:20,851 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028797097]
[2025-04-24 16:50:20,851 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-24 16:50:20,851 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-24 16:50:20,857 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes.
[2025-04-24 16:50:20,885 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements.
[2025-04-24 16:50:20,885 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-24 16:50:20,885 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-24 16:50:21,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:50:21,268 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-24 16:50:21,268 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028797097]
[2025-04-24 16:50:21,268 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028797097] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-24 16:50:21,268 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032670899]
[2025-04-24 16:50:21,269 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-24 16:50:21,269 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-24 16:50:21,269 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2025-04-24 16:50:21,271 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-24 16:50:21,273 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2025-04-24 16:50:21,306 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes.
[2025-04-24 16:50:21,332 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements.
[2025-04-24 16:50:21,332 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-24 16:50:21,332 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-24 16:50:21,337 INFO  L256         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core
[2025-04-24 16:50:21,340 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-24 16:51:52,142 WARN  L286               SmtUtils]: Spent 9.63s on a formula simplification. DAG size of input: 39 DAG size of output: 27 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2025-04-24 16:52:04,927 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:52:04,928 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-24 16:52:46,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:52:46,845 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032670899] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-24 16:52:46,845 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-24 16:52:46,846 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14
[2025-04-24 16:52:46,846 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233357436]
[2025-04-24 16:52:46,846 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-24 16:52:46,846 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2025-04-24 16:52:46,846 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-24 16:52:46,847 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2025-04-24 16:52:46,847 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=139, Unknown=23, NotChecked=0, Total=210
[2025-04-24 16:52:46,848 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-04-24 16:52:46,848 INFO  L485      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2025-04-24 16:52:46,848 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-04-24 16:52:46,848 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2025-04-24 16:52:46,848 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2025-04-24 16:52:46,849 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2025-04-24 16:53:04,045 WARN  L532   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2025-04-24 16:53:05,904 WARN  L532   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2025-04-24 16:53:22,078 WARN  L286               SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 41 DAG size of output: 39 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2025-04-24 16:53:25,414 WARN  L532   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2025-04-24 16:53:44,849 WARN  L286               SmtUtils]: Spent 14.87s on a formula simplification. DAG size of input: 45 DAG size of output: 44 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2025-04-24 16:53:54,969 WARN  L286               SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 53 DAG size of output: 28 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2025-04-24 16:53:59,043 WARN  L532   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2025-04-24 16:53:59,546 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2025-04-24 16:53:59,546 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-04-24 16:53:59,547 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2025-04-24 16:53:59,553 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2025-04-24 16:53:59,747 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2025-04-24 16:53:59,747 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2025-04-24 16:53:59,747 INFO  L305   artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2025-04-24 16:53:59,747 INFO  L139   ounterexampleChecker]: Examining path program with hash 796327545, occurence #2
[2025-04-24 16:53:59,747 INFO  L145   ounterexampleChecker]: Trying to synthesize and prove commutativity condition.
[2025-04-24 16:53:59,747 INFO  L166   ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1
[2025-04-24 16:53:59,748 WARN  L190   ounterexampleChecker]: Statements were already independent.
[2025-04-24 16:53:59,748 INFO  L166   ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4
[2025-04-24 16:53:59,748 WARN  L190   ounterexampleChecker]: Statements were already independent.
[2025-04-24 16:53:59,748 INFO  L166   ounterexampleChecker]: Performing commutativity condition check at non-minimality point 15
[2025-04-24 16:53:59,748 WARN  L190   ounterexampleChecker]: Statements were already independent.
[2025-04-24 16:53:59,748 WARN  L214   ounterexampleChecker]: Failed to synthesize and prove commutativity condition.
[2025-04-24 16:53:59,748 INFO  L316   artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2025-04-24 16:53:59,748 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-24 16:53:59,748 INFO  L85        PathProgramCache]: Analyzing trace with hash -1105581799, now seen corresponding path program 2 times
[2025-04-24 16:53:59,748 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-24 16:53:59,748 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146580947]
[2025-04-24 16:53:59,748 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-04-24 16:53:59,748 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-24 16:53:59,753 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes.
[2025-04-24 16:53:59,761 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements.
[2025-04-24 16:53:59,764 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-04-24 16:53:59,764 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-24 16:53:59,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:53:59,889 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-24 16:53:59,889 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146580947]
[2025-04-24 16:53:59,889 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146580947] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-24 16:53:59,889 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512732005]
[2025-04-24 16:53:59,889 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-04-24 16:53:59,889 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-24 16:53:59,889 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2025-04-24 16:53:59,891 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-24 16:53:59,892 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2025-04-24 16:53:59,915 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes.
[2025-04-24 16:54:00,038 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements.
[2025-04-24 16:54:00,038 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-04-24 16:54:00,038 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-24 16:54:00,039 INFO  L256         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjuncts are in the unsatisfiable core
[2025-04-24 16:54:00,040 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-24 16:54:08,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:54:08,044 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-24 16:54:11,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:54:11,184 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [512732005] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-24 16:54:11,184 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-24 16:54:11,184 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 20
[2025-04-24 16:54:11,184 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387726672]
[2025-04-24 16:54:11,184 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-24 16:54:11,184 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2025-04-24 16:54:11,184 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-24 16:54:11,185 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2025-04-24 16:54:11,185 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420
[2025-04-24 16:54:11,185 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-04-24 16:54:11,185 INFO  L485      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2025-04-24 16:54:11,185 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-04-24 16:54:11,185 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2025-04-24 16:54:11,185 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2025-04-24 16:54:11,185 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2025-04-24 16:54:11,185 INFO  L153   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2025-04-24 16:54:18,128 WARN  L532   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2025-04-24 16:54:27,246 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2025-04-24 16:54:27,246 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-04-24 16:54:27,246 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2025-04-24 16:54:27,246 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2025-04-24 16:54:27,252 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2025-04-24 16:54:27,446 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-24 16:54:27,446 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2025-04-24 16:54:27,446 INFO  L305   artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2025-04-24 16:54:27,447 INFO  L139   ounterexampleChecker]: Examining path program with hash 796327545, occurence #3
[2025-04-24 16:54:27,447 INFO  L145   ounterexampleChecker]: Trying to synthesize and prove commutativity condition.
[2025-04-24 16:54:27,447 INFO  L166   ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1
[2025-04-24 16:54:27,447 WARN  L190   ounterexampleChecker]: Statements were already independent.
[2025-04-24 16:54:27,447 INFO  L166   ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4
[2025-04-24 16:54:27,447 WARN  L190   ounterexampleChecker]: Statements were already independent.
[2025-04-24 16:54:27,447 INFO  L166   ounterexampleChecker]: Performing commutativity condition check at non-minimality point 16
[2025-04-24 16:54:27,447 WARN  L190   ounterexampleChecker]: Statements were already independent.
[2025-04-24 16:54:27,447 WARN  L214   ounterexampleChecker]: Failed to synthesize and prove commutativity condition.
[2025-04-24 16:54:27,447 INFO  L316   artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2025-04-24 16:54:27,447 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-24 16:54:27,447 INFO  L85        PathProgramCache]: Analyzing trace with hash 718032429, now seen corresponding path program 3 times
[2025-04-24 16:54:27,447 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-24 16:54:27,447 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727970982]
[2025-04-24 16:54:27,447 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2025-04-24 16:54:27,447 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-24 16:54:27,453 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 4 equivalence classes.
[2025-04-24 16:54:27,492 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 19 of 19 statements.
[2025-04-24 16:54:27,492 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2025-04-24 16:54:27,492 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-24 16:54:27,858 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:54:27,859 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-24 16:54:27,859 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727970982]
[2025-04-24 16:54:27,859 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727970982] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-24 16:54:27,859 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232755963]
[2025-04-24 16:54:27,859 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2025-04-24 16:54:27,859 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-24 16:54:27,859 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2025-04-24 16:54:27,861 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-24 16:54:27,862 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2025-04-24 16:54:27,887 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 4 equivalence classes.
[2025-04-24 16:54:28,042 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 19 of 19 statements.
[2025-04-24 16:54:28,042 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2025-04-24 16:54:28,042 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-24 16:54:28,043 INFO  L256         TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjuncts are in the unsatisfiable core
[2025-04-24 16:54:28,043 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-24 16:58:42,981 WARN  L286               SmtUtils]: Spent 39.11s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2025-04-24 16:58:49,882 WARN  L286               SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2025-04-24 16:59:36,050 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-24 16:59:36,050 INFO  L312         TraceCheckSpWp]: Computing backward predicates...