./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array9_pattern.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array9_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1 --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 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 08:29:32,930 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 08:29:32,984 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-12-02 08:29:32,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 08:29:32,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 08:29:33,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 08:29:33,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 08:29:33,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 08:29:33,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 08:29:33,009 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 08:29:33,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 08:29:33,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 08:29:33,010 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 08:29:33,010 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 08:29:33,010 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 08:29:33,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 08:29:33,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 08:29:33,010 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 08:29:33,011 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 08:29:33,012 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 08:29:33,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 08:29:33,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 08:29:33,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 08:29:33,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 08:29:33,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 08:29:33,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 08:29:33,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 08:29:33,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 08:29:33,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 08:29:33,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 08:29:33,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 08:29:33,013 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 08:29:33,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 08:29:33,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 08:29:33,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 08:29:33,013 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 08:29:33,013 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 08:29:33,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 08:29:33,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 08:29:33,014 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1
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 -> 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b
[2024-12-02 08:29:33,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 08:29:33,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 08:29:33,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 08:29:33,230 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 08:29:33,230 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 08:29:33,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-patterns/array9_pattern.c
[2024-12-02 08:29:35,845 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data/71a182672/ae95b9ae380d4c8dbfdcc8010469fa51/FLAGa524b96f1
[2024-12-02 08:29:36,055 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 08:29:36,055 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/sv-benchmarks/c/array-patterns/array9_pattern.c
[2024-12-02 08:29:36,062 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data/71a182672/ae95b9ae380d4c8dbfdcc8010469fa51/FLAGa524b96f1
[2024-12-02 08:29:36,427 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data/71a182672/ae95b9ae380d4c8dbfdcc8010469fa51
[2024-12-02 08:29:36,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 08:29:36,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 08:29:36,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 08:29:36,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 08:29:36,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 08:29:36,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51968495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36, skipping insertion in model container
[2024-12-02 08:29:36,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,450 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 08:29:36,578 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365]
[2024-12-02 08:29:36,599 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 08:29:36,607 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 08:29:36,617 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365]
[2024-12-02 08:29:36,627 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 08:29:36,641 INFO L204 MainTranslator]: Completed translation
[2024-12-02 08:29:36,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36 WrapperNode
[2024-12-02 08:29:36,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 08:29:36,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 08:29:36,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 08:29:36,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 08:29:36,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,671 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82
[2024-12-02 08:29:36,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 08:29:36,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 08:29:36,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 08:29:36,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 08:29:36,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,683 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,696 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 4, 3]. 44 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2].
[2024-12-02 08:29:36,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,701 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,702 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 08:29:36,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 08:29:36,710 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 08:29:36,710 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 08:29:36,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (1/1) ...
[2024-12-02 08:29:36,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 08:29:36,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:36,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 08:29:36,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 08:29:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 08:29:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-12-02 08:29:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-12-02 08:29:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 08:29:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-12-02 08:29:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-12-02 08:29:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-12-02 08:29:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-12-02 08:29:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-12-02 08:29:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-12-02 08:29:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 08:29:36,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 08:29:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-12-02 08:29:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-12-02 08:29:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-12-02 08:29:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-12-02 08:29:36,857 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 08:29:36,860 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 08:29:37,016 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live.
[2024-12-02 08:29:37,016 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 08:29:37,026 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 08:29:37,026 INFO L312 CfgBuilder]: Removed 4 assume(true) statements.
[2024-12-02 08:29:37,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:37 BoogieIcfgContainer
[2024-12-02 08:29:37,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 08:29:37,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 08:29:37,029 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 08:29:37,034 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 08:29:37,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:29:36" (1/3) ...
[2024-12-02 08:29:37,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447887e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:37, skipping insertion in model container
[2024-12-02 08:29:37,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:36" (2/3) ...
[2024-12-02 08:29:37,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447887e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:37, skipping insertion in model container
[2024-12-02 08:29:37,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:37" (3/3) ...
[2024-12-02 08:29:37,036 INFO L128 eAbstractionObserver]: Analyzing ICFG array9_pattern.c
[2024-12-02 08:29:37,051 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 08:29:37,052 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array9_pattern.c that has 2 procedures, 28 locations, 1 initial locations, 3 loop locations, and 1 error locations.
[2024-12-02 08:29:37,100 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 08:29:37,112 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;@830043f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 08:29:37,112 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 08:29:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:37,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-12-02 08:29:37,122 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:37,123 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:37,123 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:37,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:37,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1801183950, now seen corresponding path program 1 times
[2024-12-02 08:29:37,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:37,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263103985]
[2024-12-02 08:29:37,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:29:37,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:29:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:29:37,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:37,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263103985]
[2024-12-02 08:29:37,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263103985] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 08:29:37,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 08:29:37,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 08:29:37,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812953677]
[2024-12-02 08:29:37,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 08:29:37,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-12-02 08:29:37,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:37,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-12-02 08:29:37,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 08:29:37,302 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 08:29:37,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:37,321 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions.
[2024-12-02 08:29:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-12-02 08:29:37,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16
[2024-12-02 08:29:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:37,330 INFO L225 Difference]: With dead ends: 53
[2024-12-02 08:29:37,330 INFO L226 Difference]: Without dead ends: 24
[2024-12-02 08:29:37,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 08:29:37,337 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:37,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 08:29:37,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-12-02 08:29:37,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2024-12-02 08:29:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions.
[2024-12-02 08:29:37,374 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16
[2024-12-02 08:29:37,375 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:37,375 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions.
[2024-12-02 08:29:37,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 08:29:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions.
[2024-12-02 08:29:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-12-02 08:29:37,376 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:37,377 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:37,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-12-02 08:29:37,377 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:37,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:37,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1335951425, now seen corresponding path program 1 times
[2024-12-02 08:29:37,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:37,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245207590]
[2024-12-02 08:29:37,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:29:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:29:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 08:29:37,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:37,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245207590]
[2024-12-02 08:29:37,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245207590] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:29:37,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933490025]
[2024-12-02 08:29:37,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:29:37,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:37,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:37,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:29:37,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 08:29:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:29:37,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-12-02 08:29:37,911 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:29:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 08:29:38,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 08:29:38,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933490025] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 08:29:38,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 08:29:38,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10
[2024-12-02 08:29:38,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459790211]
[2024-12-02 08:29:38,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 08:29:38,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 08:29:38,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:38,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 08:29:38,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2024-12-02 08:29:38,118 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:38,199 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions.
[2024-12-02 08:29:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 08:29:38,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25
[2024-12-02 08:29:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:38,201 INFO L225 Difference]: With dead ends: 32
[2024-12-02 08:29:38,201 INFO L226 Difference]: Without dead ends: 28
[2024-12-02 08:29:38,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2024-12-02 08:29:38,203 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:38,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 93 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 08:29:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2024-12-02 08:29:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25.
[2024-12-02 08:29:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions.
[2024-12-02 08:29:38,209 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 25
[2024-12-02 08:29:38,209 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:38,209 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions.
[2024-12-02 08:29:38,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions.
[2024-12-02 08:29:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2024-12-02 08:29:38,210 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:38,210 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:38,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 08:29:38,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2024-12-02 08:29:38,411 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:38,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash -407125147, now seen corresponding path program 1 times
[2024-12-02 08:29:38,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:38,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914261268]
[2024-12-02 08:29:38,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:29:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:29:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:29:38,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:38,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914261268]
[2024-12-02 08:29:38,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914261268] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 08:29:38,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 08:29:38,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 08:29:38,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528777785]
[2024-12-02 08:29:38,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 08:29:38,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 08:29:38,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:38,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 08:29:38,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-12-02 08:29:38,519 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:38,583 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions.
[2024-12-02 08:29:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 08:29:38,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27
[2024-12-02 08:29:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:38,584 INFO L225 Difference]: With dead ends: 47
[2024-12-02 08:29:38,584 INFO L226 Difference]: Without dead ends: 28
[2024-12-02 08:29:38,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-12-02 08:29:38,585 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:38,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 08:29:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2024-12-02 08:29:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26.
[2024-12-02 08:29:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:38,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions.
[2024-12-02 08:29:38,591 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 27
[2024-12-02 08:29:38,591 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:38,591 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions.
[2024-12-02 08:29:38,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:38,592 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions.
[2024-12-02 08:29:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-12-02 08:29:38,592 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:38,593 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:38,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-12-02 08:29:38,593 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:38,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:38,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1832003105, now seen corresponding path program 1 times
[2024-12-02 08:29:38,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:38,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957267847]
[2024-12-02 08:29:38,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:29:38,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-12-02 08:29:38,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514604393]
[2024-12-02 08:29:38,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:29:38,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:38,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:38,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:29:38,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 08:29:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:29:38,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 41 conjuncts are in the unsatisfiable core
[2024-12-02 08:29:38,719 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:29:38,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 08:29:39,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 08:29:39,387 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size
[2024-12-02 08:29:39,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 33
[2024-12-02 08:29:39,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2024-12-02 08:29:39,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 08:29:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:29:39,600 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:29:39,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27
[2024-12-02 08:29:39,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46
[2024-12-02 08:29:40,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33
[2024-12-02 08:29:40,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 49
[2024-12-02 08:29:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 08:29:40,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:40,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957267847]
[2024-12-02 08:29:40,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-12-02 08:29:40,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514604393]
[2024-12-02 08:29:40,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514604393] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:29:40,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:29:40,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32
[2024-12-02 08:29:40,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221999969]
[2024-12-02 08:29:40,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:29:40,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2024-12-02 08:29:40,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:40,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2024-12-02 08:29:40,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992
[2024-12-02 08:29:40,398 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 32 states, 32 states have (on average 1.46875) internal successors, (47), 28 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 08:29:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:41,392 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions.
[2024-12-02 08:29:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2024-12-02 08:29:41,392 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.46875) internal successors, (47), 28 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29
[2024-12-02 08:29:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:41,394 INFO L225 Difference]: With dead ends: 82
[2024-12-02 08:29:41,394 INFO L226 Difference]: Without dead ends: 62
[2024-12-02 08:29:41,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=485, Invalid=2271, Unknown=0, NotChecked=0, Total=2756
[2024-12-02 08:29:41,395 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 93 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:41,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 253 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 08:29:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2024-12-02 08:29:41,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46.
[2024-12-02 08:29:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:29:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions.
[2024-12-02 08:29:41,404 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 29
[2024-12-02 08:29:41,405 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:41,405 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions.
[2024-12-02 08:29:41,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.46875) internal successors, (47), 28 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 08:29:41,405 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions.
[2024-12-02 08:29:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-12-02 08:29:41,406 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:41,406 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:41,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 08:29:41,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:41,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:41,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1855637981, now seen corresponding path program 2 times
[2024-12-02 08:29:41,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:41,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383529618]
[2024-12-02 08:29:41,607 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:29:41,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:41,628 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:29:41,628 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:29:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:29:41,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383529618]
[2024-12-02 08:29:41,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383529618] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:29:41,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207697860]
[2024-12-02 08:29:41,721 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:29:41,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:41,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:41,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:29:41,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 08:29:41,785 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:29:41,785 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:29:41,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-12-02 08:29:41,787 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:29:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:29:41,846 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:29:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:29:41,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207697860] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:29:41,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 08:29:41,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11
[2024-12-02 08:29:41,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516523175]
[2024-12-02 08:29:41,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:29:41,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-12-02 08:29:41,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:41,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-12-02 08:29:41,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2024-12-02 08:29:41,904 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:29:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:42,025 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions.
[2024-12-02 08:29:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-12-02 08:29:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31
[2024-12-02 08:29:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:42,026 INFO L225 Difference]: With dead ends: 54
[2024-12-02 08:29:42,026 INFO L226 Difference]: Without dead ends: 50
[2024-12-02 08:29:42,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210
[2024-12-02 08:29:42,027 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 40 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:42,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 100 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 08:29:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2024-12-02 08:29:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45.
[2024-12-02 08:29:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:29:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions.
[2024-12-02 08:29:42,036 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 31
[2024-12-02 08:29:42,036 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:42,036 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions.
[2024-12-02 08:29:42,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:29:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions.
[2024-12-02 08:29:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-12-02 08:29:42,037 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:42,037 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:42,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-12-02 08:29:42,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:42,237 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:42,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash -442830523, now seen corresponding path program 3 times
[2024-12-02 08:29:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:42,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952504519]
[2024-12-02 08:29:42,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:29:42,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:42,264 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-12-02 08:29:42,264 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:29:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:29:42,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952504519]
[2024-12-02 08:29:42,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952504519] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:29:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476341800]
[2024-12-02 08:29:42,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:29:42,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:42,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:42,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:29:42,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 08:29:42,396 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-12-02 08:29:42,396 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:29:42,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-12-02 08:29:42,398 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:29:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:29:42,449 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:29:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:29:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476341800] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:29:42,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 08:29:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11
[2024-12-02 08:29:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744811511]
[2024-12-02 08:29:42,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:29:42,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-12-02 08:29:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:42,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-12-02 08:29:42,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2024-12-02 08:29:42,492 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:29:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:42,564 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions.
[2024-12-02 08:29:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 08:29:42,565 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31
[2024-12-02 08:29:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:42,565 INFO L225 Difference]: With dead ends: 57
[2024-12-02 08:29:42,565 INFO L226 Difference]: Without dead ends: 36
[2024-12-02 08:29:42,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2024-12-02 08:29:42,566 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:42,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 101 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 08:29:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-12-02 08:29:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34.
[2024-12-02 08:29:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions.
[2024-12-02 08:29:42,573 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 31
[2024-12-02 08:29:42,573 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:42,573 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions.
[2024-12-02 08:29:42,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:29:42,573 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions.
[2024-12-02 08:29:42,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2024-12-02 08:29:42,574 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:42,574 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:42,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 08:29:42,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:42,775 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:42,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:42,775 INFO L85 PathProgramCache]: Analyzing trace with hash 795448833, now seen corresponding path program 4 times
[2024-12-02 08:29:42,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:42,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960640613]
[2024-12-02 08:29:42,776 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 08:29:42,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:42,810 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 08:29:42,810 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-12-02 08:29:42,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443938823]
[2024-12-02 08:29:42,812 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 08:29:42,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:42,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:42,814 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:29:42,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 08:29:42,879 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 08:29:42,880 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:29:42,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 58 conjuncts are in the unsatisfiable core
[2024-12-02 08:29:42,885 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:29:42,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:29:42,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 08:29:43,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:29:43,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 08:29:43,509 INFO L349 Elim1Store]: treesize reduction 104, result has 30.2 percent of original size
[2024-12-02 08:29:43,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 57
[2024-12-02 08:29:43,815 INFO L349 Elim1Store]: treesize reduction 104, result has 45.0 percent of original size
[2024-12-02 08:29:43,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 63 treesize of output 106
[2024-12-02 08:29:44,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:29:44,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22
[2024-12-02 08:29:44,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:29:44,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 21
[2024-12-02 08:29:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:29:44,293 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:29:44,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:44,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960640613]
[2024-12-02 08:29:44,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-12-02 08:29:44,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443938823]
[2024-12-02 08:29:44,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443938823] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:29:44,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-12-02 08:29:44,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2024-12-02 08:29:44,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137233983]
[2024-12-02 08:29:44,723 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:29:44,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-12-02 08:29:44,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:44,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-12-02 08:29:44,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056
[2024-12-02 08:29:44,724 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:45,230 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions.
[2024-12-02 08:29:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-12-02 08:29:45,231 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33
[2024-12-02 08:29:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:45,232 INFO L225 Difference]: With dead ends: 72
[2024-12-02 08:29:45,232 INFO L226 Difference]: Without dead ends: 68
[2024-12-02 08:29:45,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=243, Invalid=1239, Unknown=0, NotChecked=0, Total=1482
[2024-12-02 08:29:45,234 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 58 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:45,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 141 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 08:29:45,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2024-12-02 08:29:45,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50.
[2024-12-02 08:29:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:29:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions.
[2024-12-02 08:29:45,245 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 33
[2024-12-02 08:29:45,245 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:45,245 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions.
[2024-12-02 08:29:45,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions.
[2024-12-02 08:29:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2024-12-02 08:29:45,246 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:45,247 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:45,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 08:29:45,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-12-02 08:29:45,447 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:45,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1053614271, now seen corresponding path program 1 times
[2024-12-02 08:29:45,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:45,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736867902]
[2024-12-02 08:29:45,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:29:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-12-02 08:29:45,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936286470]
[2024-12-02 08:29:45,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:29:45,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:45,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:45,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:29:45,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 08:29:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:29:45,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 52 conjuncts are in the unsatisfiable core
[2024-12-02 08:29:45,544 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:29:45,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:29:45,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 08:29:45,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:29:45,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 08:29:46,080 INFO L349 Elim1Store]: treesize reduction 104, result has 30.2 percent of original size
[2024-12-02 08:29:46,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 57
[2024-12-02 08:29:46,378 INFO L349 Elim1Store]: treesize reduction 88, result has 40.9 percent of original size
[2024-12-02 08:29:46,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 73
[2024-12-02 08:29:48,008 INFO L349 Elim1Store]: treesize reduction 144, result has 45.7 percent of original size
[2024-12-02 08:29:48,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 266 treesize of output 304
[2024-12-02 08:29:48,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:29:48,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 184 treesize of output 202
[2024-12-02 08:29:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:29:56,906 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:29:57,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:57,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736867902]
[2024-12-02 08:29:57,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-12-02 08:29:57,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936286470]
[2024-12-02 08:29:57,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936286470] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:29:57,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-12-02 08:29:57,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21
[2024-12-02 08:29:57,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348978617]
[2024-12-02 08:29:57,372 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:29:57,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 08:29:57,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:57,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 08:29:57,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870
[2024-12-02 08:29:57,373 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 18 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:58,113 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions.
[2024-12-02 08:29:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-12-02 08:29:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 18 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33
[2024-12-02 08:29:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:58,114 INFO L225 Difference]: With dead ends: 77
[2024-12-02 08:29:58,114 INFO L226 Difference]: Without dead ends: 73
[2024-12-02 08:29:58,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260
[2024-12-02 08:29:58,115 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:58,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 168 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 08:29:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2024-12-02 08:29:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58.
[2024-12-02 08:29:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 08:29:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions.
[2024-12-02 08:29:58,123 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 33
[2024-12-02 08:29:58,123 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:58,124 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions.
[2024-12-02 08:29:58,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 18 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:29:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions.
[2024-12-02 08:29:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-12-02 08:29:58,125 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:58,125 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:58,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 08:29:58,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:58,325 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:58,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:58,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1075968957, now seen corresponding path program 5 times
[2024-12-02 08:29:58,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:58,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304951904]
[2024-12-02 08:29:58,326 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 08:29:58,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:58,341 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2024-12-02 08:29:58,341 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:29:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:29:58,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304951904]
[2024-12-02 08:29:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304951904] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:29:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195979079]
[2024-12-02 08:29:58,434 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 08:29:58,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:58,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:58,436 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:29:58,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-12-02 08:29:58,495 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2024-12-02 08:29:58,496 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:29:58,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-12-02 08:29:58,497 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:29:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:29:58,551 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:29:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:29:58,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195979079] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:29:58,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 08:29:58,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12
[2024-12-02 08:29:58,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996678706]
[2024-12-02 08:29:58,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:29:58,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-12-02 08:29:58,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:58,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-12-02 08:29:58,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2024-12-02 08:29:58,596 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:29:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:58,744 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions.
[2024-12-02 08:29:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-12-02 08:29:58,745 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35
[2024-12-02 08:29:58,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:58,745 INFO L225 Difference]: With dead ends: 96
[2024-12-02 08:29:58,745 INFO L226 Difference]: Without dead ends: 92
[2024-12-02 08:29:58,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342
[2024-12-02 08:29:58,746 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 31 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:58,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 132 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 08:29:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-12-02 08:29:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 60.
[2024-12-02 08:29:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 08:29:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions.
[2024-12-02 08:29:58,755 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 35
[2024-12-02 08:29:58,756 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:58,756 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions.
[2024-12-02 08:29:58,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:29:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions.
[2024-12-02 08:29:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-12-02 08:29:58,756 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:58,756 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:58,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-12-02 08:29:58,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2024-12-02 08:29:58,957 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:58,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:58,957 INFO L85 PathProgramCache]: Analyzing trace with hash -139073243, now seen corresponding path program 6 times
[2024-12-02 08:29:58,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:58,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229042118]
[2024-12-02 08:29:58,957 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 08:29:58,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:58,979 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2024-12-02 08:29:58,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:29:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:29:59,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:29:59,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229042118]
[2024-12-02 08:29:59,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229042118] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:29:59,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40261000]
[2024-12-02 08:29:59,078 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 08:29:59,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:59,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:59,080 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:29:59,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-12-02 08:29:59,164 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2024-12-02 08:29:59,165 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:29:59,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-12-02 08:29:59,167 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:29:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:29:59,218 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:29:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:29:59,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40261000] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:29:59,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 08:29:59,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13
[2024-12-02 08:29:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587768338]
[2024-12-02 08:29:59,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:29:59,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-12-02 08:29:59,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:29:59,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-12-02 08:29:59,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156
[2024-12-02 08:29:59,270 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:29:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:29:59,386 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions.
[2024-12-02 08:29:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-12-02 08:29:59,386 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35
[2024-12-02 08:29:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:29:59,387 INFO L225 Difference]: With dead ends: 83
[2024-12-02 08:29:59,387 INFO L226 Difference]: Without dead ends: 71
[2024-12-02 08:29:59,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2024-12-02 08:29:59,388 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 08:29:59,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 157 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 08:29:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2024-12-02 08:29:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65.
[2024-12-02 08:29:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 08:29:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions.
[2024-12-02 08:29:59,406 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 35
[2024-12-02 08:29:59,407 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:29:59,407 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions.
[2024-12-02 08:29:59,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:29:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions.
[2024-12-02 08:29:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-12-02 08:29:59,407 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:29:59,408 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:29:59,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-12-02 08:29:59,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-12-02 08:29:59,608 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:29:59,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:29:59,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1142173727, now seen corresponding path program 7 times
[2024-12-02 08:29:59,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:29:59,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154745176]
[2024-12-02 08:29:59,609 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 08:29:59,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:29:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-12-02 08:29:59,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210816927]
[2024-12-02 08:29:59,635 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 08:29:59,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:29:59,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:29:59,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:29:59,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-12-02 08:29:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:29:59,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 58 conjuncts are in the unsatisfiable core
[2024-12-02 08:29:59,697 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:29:59,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 08:29:59,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:29:59,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:29:59,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 08:29:59,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:29:59,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:29:59,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21
[2024-12-02 08:30:00,228 INFO L349 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size
[2024-12-02 08:30:00,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43
[2024-12-02 08:30:00,438 INFO L349 Elim1Store]: treesize reduction 54, result has 51.8 percent of original size
[2024-12-02 08:30:00,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 56 treesize of output 76
[2024-12-02 08:30:01,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:30:01,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 108
[2024-12-02 08:30:01,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:30:01,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 64
[2024-12-02 08:30:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:30:01,454 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:30:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:30:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154745176]
[2024-12-02 08:30:01,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-12-02 08:30:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210816927]
[2024-12-02 08:30:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210816927] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:30:01,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-12-02 08:30:01,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2024-12-02 08:30:01,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366194792]
[2024-12-02 08:30:01,930 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:30:01,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-12-02 08:30:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:30:01,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-12-02 08:30:01,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756
[2024-12-02 08:30:01,931 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:30:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:30:02,395 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions.
[2024-12-02 08:30:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-12-02 08:30:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37
[2024-12-02 08:30:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:30:02,396 INFO L225 Difference]: With dead ends: 93
[2024-12-02 08:30:02,396 INFO L226 Difference]: Without dead ends: 89
[2024-12-02 08:30:02,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056
[2024-12-02 08:30:02,397 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 43 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 08:30:02,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 186 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-12-02 08:30:02,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2024-12-02 08:30:02,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78.
[2024-12-02 08:30:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-12-02 08:30:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions.
[2024-12-02 08:30:02,412 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 37
[2024-12-02 08:30:02,412 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:30:02,412 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions.
[2024-12-02 08:30:02,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:30:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions.
[2024-12-02 08:30:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-12-02 08:30:02,412 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:30:02,413 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:30:02,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-12-02 08:30:02,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-12-02 08:30:02,613 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:30:02,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:30:02,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2141676319, now seen corresponding path program 2 times
[2024-12-02 08:30:02,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:30:02,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131050696]
[2024-12-02 08:30:02,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:30:02,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:30:02,638 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:30:02,638 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-12-02 08:30:02,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453888288]
[2024-12-02 08:30:02,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:30:02,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:30:02,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:30:02,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:30:02,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-12-02 08:30:02,718 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:30:02,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:30:02,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 51 conjuncts are in the unsatisfiable core
[2024-12-02 08:30:02,723 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:30:02,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:30:02,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 08:30:02,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:30:02,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 08:30:02,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:30:02,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:30:02,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21
[2024-12-02 08:30:03,264 INFO L349 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size
[2024-12-02 08:30:03,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43
[2024-12-02 08:30:03,472 INFO L349 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size
[2024-12-02 08:30:03,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43
[2024-12-02 08:30:04,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:30:04,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 174 treesize of output 156
[2024-12-02 08:30:04,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:30:04,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 123 treesize of output 93
[2024-12-02 08:30:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:30:05,285 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:30:07,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:30:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131050696]
[2024-12-02 08:30:07,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-12-02 08:30:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453888288]
[2024-12-02 08:30:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453888288] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:30:07,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-12-02 08:30:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2024-12-02 08:30:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007471892]
[2024-12-02 08:30:07,093 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:30:07,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-12-02 08:30:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:30:07,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-12-02 08:30:07,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702
[2024-12-02 08:30:07,094 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:30:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:30:08,563 INFO L93 Difference]: Finished difference Result 134 states and 155 transitions.
[2024-12-02 08:30:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2024-12-02 08:30:08,564 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37
[2024-12-02 08:30:08,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:30:08,565 INFO L225 Difference]: With dead ends: 134
[2024-12-02 08:30:08,565 INFO L226 Difference]: Without dead ends: 130
[2024-12-02 08:30:08,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806
[2024-12-02 08:30:08,566 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 62 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-12-02 08:30:08,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 304 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-12-02 08:30:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2024-12-02 08:30:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78.
[2024-12-02 08:30:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-12-02 08:30:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions.
[2024-12-02 08:30:08,580 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 37
[2024-12-02 08:30:08,580 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:30:08,580 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions.
[2024-12-02 08:30:08,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:30:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions.
[2024-12-02 08:30:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2024-12-02 08:30:08,581 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:30:08,581 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:30:08,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-12-02 08:30:08,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:30:08,782 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:30:08,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:30:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1821453061, now seen corresponding path program 8 times
[2024-12-02 08:30:08,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:30:08,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367283538]
[2024-12-02 08:30:08,782 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:30:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:30:08,796 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:30:08,796 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:30:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:30:08,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:30:08,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367283538]
[2024-12-02 08:30:08,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367283538] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:30:08,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414198986]
[2024-12-02 08:30:08,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:30:08,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:30:08,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:30:08,903 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:30:08,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-12-02 08:30:08,980 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:30:08,980 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:30:08,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 08:30:08,983 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:30:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:30:09,076 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:30:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:30:09,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414198986] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:30:09,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 08:30:09,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17
[2024-12-02 08:30:09,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199022324]
[2024-12-02 08:30:09,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:30:09,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-12-02 08:30:09,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:30:09,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-12-02 08:30:09,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272
[2024-12-02 08:30:09,149 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:30:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:30:09,313 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions.
[2024-12-02 08:30:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-12-02 08:30:09,314 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39
[2024-12-02 08:30:09,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:30:09,314 INFO L225 Difference]: With dead ends: 136
[2024-12-02 08:30:09,315 INFO L226 Difference]: Without dead ends: 122
[2024-12-02 08:30:09,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380
[2024-12-02 08:30:09,315 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 08:30:09,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 155 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 08:30:09,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2024-12-02 08:30:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104.
[2024-12-02 08:30:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 89 states have internal predecessors, (103), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-12-02 08:30:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions.
[2024-12-02 08:30:09,345 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 39
[2024-12-02 08:30:09,346 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:30:09,346 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions.
[2024-12-02 08:30:09,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:30:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions.
[2024-12-02 08:30:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-12-02 08:30:09,346 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:30:09,346 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:30:09,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-12-02 08:30:09,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:30:09,547 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:30:09,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:30:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1044556863, now seen corresponding path program 9 times
[2024-12-02 08:30:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:30:09,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848696845]
[2024-12-02 08:30:09,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:30:09,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:30:09,590 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-12-02 08:30:09,590 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-12-02 08:30:09,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493305215]
[2024-12-02 08:30:09,591 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:30:09,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:30:09,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:30:09,593 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:30:09,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-12-02 08:30:09,703 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-12-02 08:30:09,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:30:09,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 64 conjuncts are in the unsatisfiable core
[2024-12-02 08:30:09,708 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:30:09,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:30:09,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 08:30:09,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 08:30:09,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:30:09,863 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size
[2024-12-02 08:30:09,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29
[2024-12-02 08:30:09,891 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size
[2024-12-02 08:30:09,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32
[2024-12-02 08:30:10,014 INFO L349 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size
[2024-12-02 08:30:10,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44
[2024-12-02 08:30:10,047 INFO L349 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size
[2024-12-02 08:30:10,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 43
[2024-12-02 08:30:10,610 INFO L349 Elim1Store]: treesize reduction 116, result has 32.9 percent of original size
[2024-12-02 08:30:10,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 56 treesize of output 69
[2024-12-02 08:30:10,968 INFO L349 Elim1Store]: treesize reduction 116, result has 44.5 percent of original size
[2024-12-02 08:30:10,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 71 treesize of output 114
[2024-12-02 08:30:13,238 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,240 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,241 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,243 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,244 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:30:13,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 283 treesize of output 219
[2024-12-02 08:30:13,264 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,265 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,267 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,268 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,270 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:13,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:30:13,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 123
[2024-12-02 08:30:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:30:13,610 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:30:14,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:30:14,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848696845]
[2024-12-02 08:30:14,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-12-02 08:30:14,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493305215]
[2024-12-02 08:30:14,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493305215] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:30:14,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-12-02 08:30:14,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22
[2024-12-02 08:30:14,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987201725]
[2024-12-02 08:30:14,252 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:30:14,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-12-02 08:30:14,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:30:14,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-12-02 08:30:14,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992
[2024-12-02 08:30:14,253 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:30:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:30:15,163 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions.
[2024-12-02 08:30:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-12-02 08:30:15,163 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41
[2024-12-02 08:30:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:30:15,164 INFO L225 Difference]: With dead ends: 129
[2024-12-02 08:30:15,164 INFO L226 Difference]: Without dead ends: 125
[2024-12-02 08:30:15,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190
[2024-12-02 08:30:15,165 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-12-02 08:30:15,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 276 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-12-02 08:30:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2024-12-02 08:30:15,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109.
[2024-12-02 08:30:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 94 states have internal predecessors, (109), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-12-02 08:30:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions.
[2024-12-02 08:30:15,189 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 41
[2024-12-02 08:30:15,189 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:30:15,189 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions.
[2024-12-02 08:30:15,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:30:15,189 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions.
[2024-12-02 08:30:15,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-12-02 08:30:15,189 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:30:15,189 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:30:15,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-12-02 08:30:15,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:30:15,390 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:30:15,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:30:15,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2065625217, now seen corresponding path program 3 times
[2024-12-02 08:30:15,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:30:15,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217495717]
[2024-12-02 08:30:15,390 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:30:15,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:30:15,446 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-12-02 08:30:15,446 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-12-02 08:30:15,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299694485]
[2024-12-02 08:30:15,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:30:15,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:30:15,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:30:15,450 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:30:15,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-12-02 08:30:15,568 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-12-02 08:30:15,568 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:30:15,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 69 conjuncts are in the unsatisfiable core
[2024-12-02 08:30:15,574 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:30:15,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:30:15,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 08:30:15,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 08:30:15,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:30:15,727 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size
[2024-12-02 08:30:15,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32
[2024-12-02 08:30:15,761 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size
[2024-12-02 08:30:15,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29
[2024-12-02 08:30:15,886 INFO L349 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size
[2024-12-02 08:30:15,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44
[2024-12-02 08:30:15,915 INFO L349 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size
[2024-12-02 08:30:15,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 43
[2024-12-02 08:30:16,629 INFO L349 Elim1Store]: treesize reduction 396, result has 21.6 percent of original size
[2024-12-02 08:30:16,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 92 treesize of output 133
[2024-12-02 08:30:17,137 INFO L349 Elim1Store]: treesize reduction 332, result has 34.3 percent of original size
[2024-12-02 08:30:17,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 92 treesize of output 197
[2024-12-02 08:30:24,785 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:24,787 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:24,788 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:24,792 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:25,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:30:25,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 12 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 759 treesize of output 995
[2024-12-02 08:30:25,371 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:25,374 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:25,376 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:25,407 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:25,409 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:30:28,383 INFO L349 Elim1Store]: treesize reduction 696, result has 44.3 percent of original size
[2024-12-02 08:30:28,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 12 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 557 treesize of output 865
[2024-12-02 08:33:53,020 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory")
[2024-12-02 08:33:53,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101
[2024-12-02 08:33:53,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:33:53,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217495717]
[2024-12-02 08:33:53,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-12-02 08:33:53,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299694485]
[2024-12-02 08:33:53,020 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception
[2024-12-02 08:33:53,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-12-02 08:33:53,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:33:53,221 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver:
de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107)
at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.<init>(TraceCheckSpWp.java:160)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:140)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701)
at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258)
... 67 more
[2024-12-02 08:33:53,226 INFO L158 Benchmark]: Toolchain (without parser) took 256796.25ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 117.0MB in the beginning and 273.1MB in the end (delta: -156.1MB). Peak memory consumption was 200.2MB. Max. memory is 16.1GB.
[2024-12-02 08:33:53,227 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 08:33:53,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.00ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 105.3MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 08:33:53,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.37ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 104.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 08:33:53,227 INFO L158 Benchmark]: Boogie Preprocessor took 36.94ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 102.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 08:33:53,227 INFO L158 Benchmark]: RCFGBuilder took 317.10ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 90.2MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 08:33:53,228 INFO L158 Benchmark]: TraceAbstraction took 256196.94ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 89.6MB in the beginning and 273.1MB in the end (delta: -183.5MB). Peak memory consumption was 175.0MB. Max. memory is 16.1GB.
[2024-12-02 08:33:53,229 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 211.00ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 105.3MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 28.37ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 104.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 36.94ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 102.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 317.10ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 90.2MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 256196.94ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 89.6MB in the beginning and 273.1MB in the end (delta: -183.5MB). Peak memory consumption was 175.0MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array9_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1 --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 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 08:33:54,925 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 08:33:54,999 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-12-02 08:33:55,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 08:33:55,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 08:33:55,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 08:33:55,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 08:33:55,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 08:33:55,028 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 08:33:55,028 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 08:33:55,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 08:33:55,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 08:33:55,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 08:33:55,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 08:33:55,029 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 08:33:55,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 08:33:55,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 08:33:55,029 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 08:33:55,029 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 08:33:55,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 08:33:55,029 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 08:33:55,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 08:33:55,030 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 08:33:55,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 08:33:55,031 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 08:33:55,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 08:33:55,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 08:33:55,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 08:33:55,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 08:33:55,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 08:33:55,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 08:33:55,032 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 08:33:55,032 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 08:33:55,032 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-12-02 08:33:55,032 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-12-02 08:33:55,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 08:33:55,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 08:33:55,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 08:33:55,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 08:33:55,033 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1
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 -> 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b
[2024-12-02 08:33:55,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 08:33:55,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 08:33:55,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 08:33:55,266 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 08:33:55,266 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 08:33:55,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-patterns/array9_pattern.c
[2024-12-02 08:33:58,019 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data/99ed58d25/26771ae3ecd944ad9634f93be3e0cb07/FLAG7de6142a8
[2024-12-02 08:33:58,224 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 08:33:58,225 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/sv-benchmarks/c/array-patterns/array9_pattern.c
[2024-12-02 08:33:58,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data/99ed58d25/26771ae3ecd944ad9634f93be3e0cb07/FLAG7de6142a8
[2024-12-02 08:33:58,254 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/data/99ed58d25/26771ae3ecd944ad9634f93be3e0cb07
[2024-12-02 08:33:58,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 08:33:58,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 08:33:58,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 08:33:58,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 08:33:58,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 08:33:58,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6799050f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58, skipping insertion in model container
[2024-12-02 08:33:58,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,284 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 08:33:58,427 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365]
[2024-12-02 08:33:58,451 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 08:33:58,462 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 08:33:58,473 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365]
[2024-12-02 08:33:58,484 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 08:33:58,499 INFO L204 MainTranslator]: Completed translation
[2024-12-02 08:33:58,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58 WrapperNode
[2024-12-02 08:33:58,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 08:33:58,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 08:33:58,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 08:33:58,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 08:33:58,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,535 INFO L138 Inliner]: procedures = 18, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79
[2024-12-02 08:33:58,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 08:33:58,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 08:33:58,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 08:33:58,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 08:33:58,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,563 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 4, 3]. 44 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2].
[2024-12-02 08:33:58,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,571 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,578 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 08:33:58,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 08:33:58,582 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 08:33:58,582 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 08:33:58,583 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (1/1) ...
[2024-12-02 08:33:58,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 08:33:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:33:58,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 08:33:58,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 08:33:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-12-02 08:33:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 08:33:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-12-02 08:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0
[2024-12-02 08:33:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1
[2024-12-02 08:33:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2
[2024-12-02 08:33:58,713 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 08:33:58,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 08:33:58,948 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live.
[2024-12-02 08:33:58,949 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 08:33:58,957 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 08:33:58,957 INFO L312 CfgBuilder]: Removed 4 assume(true) statements.
[2024-12-02 08:33:58,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:33:58 BoogieIcfgContainer
[2024-12-02 08:33:58,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 08:33:58,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 08:33:58,960 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 08:33:58,965 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 08:33:58,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:33:58" (1/3) ...
[2024-12-02 08:33:58,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd5c229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:33:58, skipping insertion in model container
[2024-12-02 08:33:58,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:33:58" (2/3) ...
[2024-12-02 08:33:58,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd5c229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:33:58, skipping insertion in model container
[2024-12-02 08:33:58,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:33:58" (3/3) ...
[2024-12-02 08:33:58,967 INFO L128 eAbstractionObserver]: Analyzing ICFG array9_pattern.c
[2024-12-02 08:33:58,979 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 08:33:58,980 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array9_pattern.c that has 2 procedures, 28 locations, 1 initial locations, 3 loop locations, and 1 error locations.
[2024-12-02 08:33:59,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 08:33:59,035 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;@2698b721, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 08:33:59,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 08:33:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:33:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-12-02 08:33:59,043 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:33:59,043 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:33:59,044 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:33:59,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:33:59,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1801183950, now seen corresponding path program 1 times
[2024-12-02 08:33:59,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:33:59,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233801377]
[2024-12-02 08:33:59,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:33:59,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:33:59,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:33:59,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:33:59,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 08:33:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:33:59,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-12-02 08:33:59,142 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:33:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:33:59,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 08:33:59,159 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:33:59,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233801377]
[2024-12-02 08:33:59,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233801377] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 08:33:59,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 08:33:59,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 08:33:59,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14749905]
[2024-12-02 08:33:59,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 08:33:59,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-12-02 08:33:59,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:33:59,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-12-02 08:33:59,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 08:33:59,180 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 08:33:59,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:33:59,194 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions.
[2024-12-02 08:33:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-12-02 08:33:59,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16
[2024-12-02 08:33:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:33:59,201 INFO L225 Difference]: With dead ends: 53
[2024-12-02 08:33:59,201 INFO L226 Difference]: Without dead ends: 24
[2024-12-02 08:33:59,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 08:33:59,206 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 08:33:59,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 08:33:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-12-02 08:33:59,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2024-12-02 08:33:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:33:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions.
[2024-12-02 08:33:59,235 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16
[2024-12-02 08:33:59,235 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:33:59,236 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions.
[2024-12-02 08:33:59,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 08:33:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions.
[2024-12-02 08:33:59,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-12-02 08:33:59,237 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:33:59,237 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:33:59,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 08:33:59,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:33:59,438 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:33:59,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:33:59,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1335951425, now seen corresponding path program 1 times
[2024-12-02 08:33:59,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:33:59,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060453134]
[2024-12-02 08:33:59,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:33:59,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:33:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:33:59,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:33:59,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 08:33:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:33:59,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 08:33:59,554 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:33:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:33:59,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 08:33:59,658 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:33:59,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060453134]
[2024-12-02 08:33:59,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060453134] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 08:33:59,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 08:33:59,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-12-02 08:33:59,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46745445]
[2024-12-02 08:33:59,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 08:33:59,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 08:33:59,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:33:59,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 08:33:59,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-12-02 08:33:59,661 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:33:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:33:59,876 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions.
[2024-12-02 08:33:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 08:33:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25
[2024-12-02 08:33:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:33:59,878 INFO L225 Difference]: With dead ends: 50
[2024-12-02 08:33:59,878 INFO L226 Difference]: Without dead ends: 32
[2024-12-02 08:33:59,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-12-02 08:33:59,879 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 08:33:59,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 60 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 08:33:59,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2024-12-02 08:33:59,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2024-12-02 08:33:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:33:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions.
[2024-12-02 08:33:59,886 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25
[2024-12-02 08:33:59,886 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:33:59,886 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions.
[2024-12-02 08:33:59,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:33:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions.
[2024-12-02 08:33:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-12-02 08:33:59,888 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:33:59,888 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:33:59,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 08:34:00,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:34:00,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:34:00,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:34:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1832003105, now seen corresponding path program 1 times
[2024-12-02 08:34:00,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:34:00,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208482335]
[2024-12-02 08:34:00,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:34:00,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:34:00,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:34:00,091 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:34:00,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 08:34:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:34:00,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-12-02 08:34:00,183 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:34:00,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:34:01,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2024-12-02 08:34:01,627 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:34:01,665 INFO L349 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size
[2024-12-02 08:34:01,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 34
[2024-12-02 08:34:02,177 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:34:02,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:34:02,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14
[2024-12-02 08:34:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:34:02,346 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:34:03,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33
[2024-12-02 08:34:03,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59
[2024-12-02 08:34:06,838 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:34:06,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208482335]
[2024-12-02 08:34:06,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208482335] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:34:06,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [80475743]
[2024-12-02 08:34:06,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:34:06,839 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 08:34:06,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 08:34:06,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 08:34:06,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-12-02 08:34:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:34:07,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-12-02 08:34:07,095 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:34:07,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:34:08,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2024-12-02 08:34:08,389 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:34:08,416 INFO L349 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size
[2024-12-02 08:34:08,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 34
[2024-12-02 08:34:08,698 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:34:08,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:34:08,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14
[2024-12-02 08:34:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:34:08,768 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:34:09,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33
[2024-12-02 08:34:09,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59
[2024-12-02 08:34:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [80475743] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:34:10,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:34:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 23
[2024-12-02 08:34:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344037147]
[2024-12-02 08:34:10,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:34:10,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-12-02 08:34:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:34:10,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-12-02 08:34:10,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870
[2024-12-02 08:34:10,671 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:34:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:34:13,255 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions.
[2024-12-02 08:34:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-12-02 08:34:13,259 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29
[2024-12-02 08:34:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:34:13,260 INFO L225 Difference]: With dead ends: 78
[2024-12-02 08:34:13,260 INFO L226 Difference]: Without dead ends: 58
[2024-12-02 08:34:13,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640
[2024-12-02 08:34:13,261 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 72 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-12-02 08:34:13,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 193 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-12-02 08:34:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2024-12-02 08:34:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46.
[2024-12-02 08:34:13,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:34:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions.
[2024-12-02 08:34:13,272 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 29
[2024-12-02 08:34:13,272 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:34:13,273 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions.
[2024-12-02 08:34:13,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:34:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions.
[2024-12-02 08:34:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-12-02 08:34:13,273 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:34:13,274 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:34:13,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-12-02 08:34:13,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2024-12-02 08:34:13,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 08:34:13,674 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:34:13,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:34:13,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1855637981, now seen corresponding path program 2 times
[2024-12-02 08:34:13,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:34:13,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779065716]
[2024-12-02 08:34:13,675 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:34:13,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:34:13,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:34:13,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:34:13,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 08:34:13,761 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:34:13,761 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:34:13,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-12-02 08:34:13,768 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:34:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:34:13,878 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:34:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:34:14,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:34:14,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779065716]
[2024-12-02 08:34:14,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779065716] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:34:14,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:34:14,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13
[2024-12-02 08:34:14,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409916001]
[2024-12-02 08:34:14,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:34:14,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-12-02 08:34:14,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:34:14,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-12-02 08:34:14,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2024-12-02 08:34:14,126 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:34:14,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:34:14,754 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions.
[2024-12-02 08:34:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-12-02 08:34:14,754 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31
[2024-12-02 08:34:14,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:34:14,755 INFO L225 Difference]: With dead ends: 63
[2024-12-02 08:34:14,755 INFO L226 Difference]: Without dead ends: 59
[2024-12-02 08:34:14,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342
[2024-12-02 08:34:14,756 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 36 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 08:34:14,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 166 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 08:34:14,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2024-12-02 08:34:14,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45.
[2024-12-02 08:34:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:34:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions.
[2024-12-02 08:34:14,762 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 31
[2024-12-02 08:34:14,762 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:34:14,763 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions.
[2024-12-02 08:34:14,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:34:14,763 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions.
[2024-12-02 08:34:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-12-02 08:34:14,763 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:34:14,763 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:34:14,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 08:34:14,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:34:14,964 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:34:14,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:34:14,964 INFO L85 PathProgramCache]: Analyzing trace with hash -442830523, now seen corresponding path program 3 times
[2024-12-02 08:34:14,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:34:14,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069091470]
[2024-12-02 08:34:14,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:34:14,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:34:14,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:34:14,966 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:34:14,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 08:34:15,064 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-12-02 08:34:15,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:34:15,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-12-02 08:34:15,071 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:34:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:34:15,208 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:34:15,523 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:34:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069091470]
[2024-12-02 08:34:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069091470] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:34:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [44872345]
[2024-12-02 08:34:15,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:34:15,523 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 08:34:15,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 08:34:15,525 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 08:34:15,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process
[2024-12-02 08:34:16,278 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-12-02 08:34:16,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:34:16,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 08:34:16,281 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:34:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:34:16,617 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:34:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:34:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [44872345] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:34:17,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 08:34:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 21
[2024-12-02 08:34:17,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139037514]
[2024-12-02 08:34:17,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:34:17,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 08:34:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:34:17,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 08:34:17,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650
[2024-12-02 08:34:17,357 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-12-02 08:34:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:34:17,986 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions.
[2024-12-02 08:34:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-12-02 08:34:17,987 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 31
[2024-12-02 08:34:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:34:17,987 INFO L225 Difference]: With dead ends: 57
[2024-12-02 08:34:17,987 INFO L226 Difference]: Without dead ends: 36
[2024-12-02 08:34:17,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870
[2024-12-02 08:34:17,989 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-12-02 08:34:17,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 141 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-12-02 08:34:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-12-02 08:34:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34.
[2024-12-02 08:34:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 08:34:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions.
[2024-12-02 08:34:17,994 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 31
[2024-12-02 08:34:17,994 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:34:17,994 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions.
[2024-12-02 08:34:17,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-12-02 08:34:17,995 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions.
[2024-12-02 08:34:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2024-12-02 08:34:17,995 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:34:17,995 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:34:18,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 08:34:18,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0
[2024-12-02 08:34:18,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 08:34:18,396 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:34:18,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:34:18,396 INFO L85 PathProgramCache]: Analyzing trace with hash 795448833, now seen corresponding path program 4 times
[2024-12-02 08:34:18,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:34:18,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112886897]
[2024-12-02 08:34:18,397 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 08:34:18,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:34:18,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:34:18,398 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:34:18,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-12-02 08:34:18,479 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 08:34:18,479 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:34:18,485 WARN L254 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-12-02 08:34:18,490 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:34:18,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:34:18,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:34:18,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:34:20,026 INFO L349 Elim1Store]: treesize reduction 49, result has 34.7 percent of original size
[2024-12-02 08:34:20,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 42
[2024-12-02 08:34:20,811 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:34:20,813 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:34:20,845 INFO L349 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size
[2024-12-02 08:34:20,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 50 treesize of output 54
[2024-12-02 08:34:21,714 INFO L349 Elim1Store]: treesize reduction 12, result has 47.8 percent of original size
[2024-12-02 08:34:21,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 26
[2024-12-02 08:34:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:34:21,914 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:34:29,809 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:34:29,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112886897]
[2024-12-02 08:34:29,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112886897] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:34:29,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [381005774]
[2024-12-02 08:34:29,809 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 08:34:29,809 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 08:34:29,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 08:34:29,811 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 08:34:29,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process
[2024-12-02 08:34:30,206 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 08:34:30,206 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:34:30,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 37 conjuncts are in the unsatisfiable core
[2024-12-02 08:34:30,211 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:34:30,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:34:30,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:34:30,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:34:31,123 INFO L349 Elim1Store]: treesize reduction 49, result has 34.7 percent of original size
[2024-12-02 08:34:31,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 42
[2024-12-02 08:34:31,426 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:34:31,428 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:34:31,452 INFO L349 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size
[2024-12-02 08:34:31,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 50 treesize of output 54
[2024-12-02 08:34:32,122 INFO L349 Elim1Store]: treesize reduction 12, result has 47.8 percent of original size
[2024-12-02 08:34:32,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 26
[2024-12-02 08:34:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:34:32,244 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:34:33,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [381005774] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:34:33,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:34:33,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 24
[2024-12-02 08:34:33,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665270434]
[2024-12-02 08:34:33,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:34:33,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-12-02 08:34:33,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:34:33,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-12-02 08:34:33,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056
[2024-12-02 08:34:33,323 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:34:38,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:34:43,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:34:48,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:34:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:34:48,809 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions.
[2024-12-02 08:34:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2024-12-02 08:34:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33
[2024-12-02 08:34:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:34:48,813 INFO L225 Difference]: With dead ends: 69
[2024-12-02 08:34:48,813 INFO L226 Difference]: Without dead ends: 65
[2024-12-02 08:34:48,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722
[2024-12-02 08:34:48,814 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 75 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time
[2024-12-02 08:34:48,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 186 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 424 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time]
[2024-12-02 08:34:48,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-12-02 08:34:48,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50.
[2024-12-02 08:34:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 08:34:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions.
[2024-12-02 08:34:48,822 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 33
[2024-12-02 08:34:48,822 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:34:48,822 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions.
[2024-12-02 08:34:48,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:34:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions.
[2024-12-02 08:34:48,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2024-12-02 08:34:48,823 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:34:48,823 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:34:48,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-12-02 08:34:49,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0
[2024-12-02 08:34:49,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 08:34:49,223 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:34:49,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:34:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1053614271, now seen corresponding path program 1 times
[2024-12-02 08:34:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:34:49,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118554739]
[2024-12-02 08:34:49,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:34:49,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:34:49,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:34:49,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:34:49,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-12-02 08:34:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:34:49,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 41 conjuncts are in the unsatisfiable core
[2024-12-02 08:34:49,309 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:34:49,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:34:49,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:34:49,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 08:34:49,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:34:50,768 INFO L349 Elim1Store]: treesize reduction 49, result has 34.7 percent of original size
[2024-12-02 08:34:50,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 42
[2024-12-02 08:34:51,613 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:34:51,615 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:34:51,640 INFO L349 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size
[2024-12-02 08:34:51,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 59
[2024-12-02 08:34:52,493 INFO L349 Elim1Store]: treesize reduction 12, result has 47.8 percent of original size
[2024-12-02 08:34:52,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 28
[2024-12-02 08:34:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:34:52,740 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:35:04,066 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:35:04,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118554739]
[2024-12-02 08:35:04,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118554739] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:35:04,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [173261436]
[2024-12-02 08:35:04,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 08:35:04,066 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 08:35:04,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 08:35:04,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 08:35:04,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process
[2024-12-02 08:35:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:35:04,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 39 conjuncts are in the unsatisfiable core
[2024-12-02 08:35:04,557 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:35:04,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:35:04,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:35:04,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:35:04,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 08:35:05,537 INFO L349 Elim1Store]: treesize reduction 49, result has 34.7 percent of original size
[2024-12-02 08:35:05,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 42
[2024-12-02 08:35:05,808 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:35:05,811 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:35:05,838 INFO L349 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size
[2024-12-02 08:35:05,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 59
[2024-12-02 08:35:06,336 INFO L349 Elim1Store]: treesize reduction 12, result has 47.8 percent of original size
[2024-12-02 08:35:06,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 28
[2024-12-02 08:35:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:35:06,421 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:35:07,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [173261436] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:35:07,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:35:07,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 24
[2024-12-02 08:35:07,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841966204]
[2024-12-02 08:35:07,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:35:07,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-12-02 08:35:07,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:35:07,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-12-02 08:35:07,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056
[2024-12-02 08:35:07,642 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:35:13,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:35:17,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:35:21,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:35:26,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:35:30,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:35:35,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:35:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:35:35,062 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions.
[2024-12-02 08:35:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-12-02 08:35:35,065 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33
[2024-12-02 08:35:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:35:35,066 INFO L225 Difference]: With dead ends: 85
[2024-12-02 08:35:35,066 INFO L226 Difference]: Without dead ends: 81
[2024-12-02 08:35:35,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=227, Invalid=1255, Unknown=0, NotChecked=0, Total=1482
[2024-12-02 08:35:35,067 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 56 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 16 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time
[2024-12-02 08:35:35,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 202 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 481 Invalid, 6 Unknown, 0 Unchecked, 25.7s Time]
[2024-12-02 08:35:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2024-12-02 08:35:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60.
[2024-12-02 08:35:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 08:35:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions.
[2024-12-02 08:35:35,078 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 33
[2024-12-02 08:35:35,078 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:35:35,078 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions.
[2024-12-02 08:35:35,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:35:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions.
[2024-12-02 08:35:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-12-02 08:35:35,079 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:35:35,079 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:35:35,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0
[2024-12-02 08:35:35,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-12-02 08:35:35,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:35:35,480 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:35:35,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:35:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1075968957, now seen corresponding path program 5 times
[2024-12-02 08:35:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:35:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136155271]
[2024-12-02 08:35:35,481 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 08:35:35,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:35:35,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:35:35,483 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:35:35,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-12-02 08:35:35,626 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2024-12-02 08:35:35,626 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:35:35,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-12-02 08:35:35,633 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:35:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:35:36,139 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:35:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:35:36,877 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:35:36,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136155271]
[2024-12-02 08:35:36,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136155271] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:35:36,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:35:36,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23
[2024-12-02 08:35:36,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596738018]
[2024-12-02 08:35:36,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:35:36,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-12-02 08:35:36,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:35:36,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-12-02 08:35:36,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506
[2024-12-02 08:35:36,878 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 08:35:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:35:38,507 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions.
[2024-12-02 08:35:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-12-02 08:35:38,508 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35
[2024-12-02 08:35:38,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:35:38,509 INFO L225 Difference]: With dead ends: 120
[2024-12-02 08:35:38,509 INFO L226 Difference]: Without dead ends: 114
[2024-12-02 08:35:38,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=302, Invalid=820, Unknown=0, NotChecked=0, Total=1122
[2024-12-02 08:35:38,510 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 173 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-12-02 08:35:38,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 170 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-12-02 08:35:38,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2024-12-02 08:35:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91.
[2024-12-02 08:35:38,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 78 states have internal predecessors, (92), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 08:35:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions.
[2024-12-02 08:35:38,534 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 35
[2024-12-02 08:35:38,534 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:35:38,534 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions.
[2024-12-02 08:35:38,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 08:35:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions.
[2024-12-02 08:35:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-12-02 08:35:38,535 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:35:38,535 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:35:38,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-12-02 08:35:38,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:35:38,736 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:35:38,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:35:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash -139073243, now seen corresponding path program 6 times
[2024-12-02 08:35:38,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:35:38,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834114792]
[2024-12-02 08:35:38,737 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 08:35:38,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:35:38,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:35:38,738 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:35:38,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-12-02 08:35:38,885 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2024-12-02 08:35:38,885 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:35:38,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-12-02 08:35:38,893 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:35:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:35:39,365 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:35:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 08:35:40,173 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:35:40,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834114792]
[2024-12-02 08:35:40,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834114792] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:35:40,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:35:40,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22
[2024-12-02 08:35:40,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009722543]
[2024-12-02 08:35:40,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:35:40,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-12-02 08:35:40,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:35:40,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-12-02 08:35:40,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462
[2024-12-02 08:35:40,175 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 08:35:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:35:42,323 INFO L93 Difference]: Finished difference Result 147 states and 168 transitions.
[2024-12-02 08:35:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2024-12-02 08:35:42,324 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35
[2024-12-02 08:35:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:35:42,325 INFO L225 Difference]: With dead ends: 147
[2024-12-02 08:35:42,325 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 08:35:42,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=359, Invalid=1047, Unknown=0, NotChecked=0, Total=1406
[2024-12-02 08:35:42,325 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 130 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-12-02 08:35:42,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 242 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-12-02 08:35:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 08:35:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109.
[2024-12-02 08:35:42,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 94 states have internal predecessors, (110), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-12-02 08:35:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions.
[2024-12-02 08:35:42,350 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 35
[2024-12-02 08:35:42,350 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:35:42,350 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions.
[2024-12-02 08:35:42,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 08:35:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions.
[2024-12-02 08:35:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-12-02 08:35:42,351 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:35:42,351 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:35:42,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-12-02 08:35:42,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:35:42,552 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:35:42,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:35:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1142173727, now seen corresponding path program 7 times
[2024-12-02 08:35:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:35:42,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341235427]
[2024-12-02 08:35:42,552 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 08:35:42,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:35:42,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:35:42,554 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:35:42,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-12-02 08:35:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:35:42,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 48 conjuncts are in the unsatisfiable core
[2024-12-02 08:35:42,658 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:35:42,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:35:43,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:35:43,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:35:43,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:35:43,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:35:43,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:35:44,736 INFO L349 Elim1Store]: treesize reduction 98, result has 34.2 percent of original size
[2024-12-02 08:35:44,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 73
[2024-12-02 08:35:45,742 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:35:45,744 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:35:45,745 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:35:45,779 INFO L349 Elim1Store]: treesize reduction 48, result has 18.6 percent of original size
[2024-12-02 08:35:45,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 64 treesize of output 74
[2024-12-02 08:35:47,494 INFO L349 Elim1Store]: treesize reduction 16, result has 52.9 percent of original size
[2024-12-02 08:35:47,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 36
[2024-12-02 08:35:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:35:47,832 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:36:01,299 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:36:01,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341235427]
[2024-12-02 08:36:01,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341235427] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:36:01,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1371127940]
[2024-12-02 08:36:01,299 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 08:36:01,299 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 08:36:01,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 08:36:01,301 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 08:36:01,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process
[2024-12-02 08:36:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 08:36:01,964 WARN L254 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 49 conjuncts are in the unsatisfiable core
[2024-12-02 08:36:01,968 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:36:02,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:36:02,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:36:02,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:36:02,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:36:02,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:36:02,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:36:03,482 INFO L349 Elim1Store]: treesize reduction 98, result has 34.2 percent of original size
[2024-12-02 08:36:03,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 73
[2024-12-02 08:36:03,810 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:36:03,812 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:36:03,813 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 08:36:03,842 INFO L349 Elim1Store]: treesize reduction 48, result has 18.6 percent of original size
[2024-12-02 08:36:03,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 64 treesize of output 74
[2024-12-02 08:36:04,855 INFO L349 Elim1Store]: treesize reduction 16, result has 52.9 percent of original size
[2024-12-02 08:36:04,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 36
[2024-12-02 08:36:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:36:05,361 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:36:36,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1371127940] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:36:36,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:36:36,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 27
[2024-12-02 08:36:36,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762485433]
[2024-12-02 08:36:36,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:36:36,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2024-12-02 08:36:36,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:36:36,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2024-12-02 08:36:36,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1902, Unknown=1, NotChecked=0, Total=2162
[2024-12-02 08:36:36,416 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:36:43,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:36:49,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:36:56,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:36:56,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:36:56,892 INFO L93 Difference]: Finished difference Result 135 states and 152 transitions.
[2024-12-02 08:36:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2024-12-02 08:36:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37
[2024-12-02 08:36:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:36:56,897 INFO L225 Difference]: With dead ends: 135
[2024-12-02 08:36:56,897 INFO L226 Difference]: Without dead ends: 123
[2024-12-02 08:36:56,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=430, Invalid=2761, Unknown=1, NotChecked=0, Total=3192
[2024-12-02 08:36:56,898 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 46 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time
[2024-12-02 08:36:56,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 260 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 650 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time]
[2024-12-02 08:36:56,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2024-12-02 08:36:56,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119.
[2024-12-02 08:36:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 102 states have internal predecessors, (119), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-12-02 08:36:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 135 transitions.
[2024-12-02 08:36:56,928 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 135 transitions. Word has length 37
[2024-12-02 08:36:56,928 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:36:56,929 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 135 transitions.
[2024-12-02 08:36:56,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 08:36:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 135 transitions.
[2024-12-02 08:36:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-12-02 08:36:56,929 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:36:56,929 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:36:56,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0
[2024-12-02 08:36:57,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-12-02 08:36:57,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:36:57,330 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:36:57,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:36:57,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2141676319, now seen corresponding path program 2 times
[2024-12-02 08:36:57,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:36:57,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046046499]
[2024-12-02 08:36:57,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:36:57,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:36:57,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:36:57,332 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:36:57,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-12-02 08:36:57,447 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:36:57,447 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:36:57,453 WARN L254 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 51 conjuncts are in the unsatisfiable core
[2024-12-02 08:36:57,457 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:36:57,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:36:57,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:36:57,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:36:57,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:36:58,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:36:58,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:36:58,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:36:58,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:36:59,939 INFO L349 Elim1Store]: treesize reduction 147, result has 34.1 percent of original size
[2024-12-02 08:36:59,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 57 treesize of output 104
[2024-12-02 08:37:01,099 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:37:01,229 INFO L349 Elim1Store]: treesize reduction 114, result has 30.9 percent of original size
[2024-12-02 08:37:01,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 57 treesize of output 95
[2024-12-02 08:37:03,660 INFO L349 Elim1Store]: treesize reduction 22, result has 72.8 percent of original size
[2024-12-02 08:37:03,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 156
[2024-12-02 08:37:03,900 INFO L349 Elim1Store]: treesize reduction 14, result has 82.7 percent of original size
[2024-12-02 08:37:03,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 134
[2024-12-02 08:37:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:37:06,610 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:37:28,487 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:37:28,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046046499]
[2024-12-02 08:37:28,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046046499] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:37:28,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1243287670]
[2024-12-02 08:37:28,487 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:37:28,487 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 08:37:28,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 08:37:28,489 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 08:37:28,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process
[2024-12-02 08:37:29,341 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:37:29,341 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:37:29,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 45 conjuncts are in the unsatisfiable core
[2024-12-02 08:37:29,347 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:37:29,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:37:29,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:37:29,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:37:30,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:37:30,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:37:30,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:37:30,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:37:30,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:37:33,415 INFO L349 Elim1Store]: treesize reduction 45, result has 48.9 percent of original size
[2024-12-02 08:37:33,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 62
[2024-12-02 08:37:35,173 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:37:35,258 INFO L349 Elim1Store]: treesize reduction 34, result has 46.0 percent of original size
[2024-12-02 08:37:35,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 57
[2024-12-02 08:37:41,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:37:41,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 268
[2024-12-02 08:37:42,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:37:42,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 131 treesize of output 227
[2024-12-02 08:38:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:38:54,308 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:39:20,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1243287670] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:39:20,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:39:20,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21] total 38
[2024-12-02 08:39:20,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800676332]
[2024-12-02 08:39:20,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:39:20,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2024-12-02 08:39:20,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:39:20,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2024-12-02 08:39:20,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=2751, Unknown=0, NotChecked=0, Total=3192
[2024-12-02 08:39:20,999 INFO L87 Difference]: Start difference. First operand 119 states and 135 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 35 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 08:39:29,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:39:34,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:39:38,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:39:43,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:39:47,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:39:52,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:39:56,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:40:00,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:40:04,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:40:11,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:40:15,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:40:19,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:40:23,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:40:29,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:40:33,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:40:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:40:33,903 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions.
[2024-12-02 08:40:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2024-12-02 08:40:33,904 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 35 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37
[2024-12-02 08:40:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:40:33,905 INFO L225 Difference]: With dead ends: 147
[2024-12-02 08:40:33,905 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 08:40:33,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 65.3s TimeCoverageRelationStatistics Valid=638, Invalid=4054, Unknown=0, NotChecked=0, Total=4692
[2024-12-02 08:40:33,906 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 85 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 19 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.9s IncrementalHoareTripleChecker+Time
[2024-12-02 08:40:33,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 356 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 890 Invalid, 15 Unknown, 0 Unchecked, 64.9s Time]
[2024-12-02 08:40:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 08:40:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129.
[2024-12-02 08:40:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 110 states have internal predecessors, (128), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-12-02 08:40:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 146 transitions.
[2024-12-02 08:40:33,938 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 146 transitions. Word has length 37
[2024-12-02 08:40:33,938 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:40:33,938 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 146 transitions.
[2024-12-02 08:40:33,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 35 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 08:40:33,938 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 146 transitions.
[2024-12-02 08:40:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-12-02 08:40:33,939 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:40:33,939 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:40:33,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-12-02 08:40:34,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0
[2024-12-02 08:40:34,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 08:40:34,339 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:40:34,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:40:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1044556863, now seen corresponding path program 8 times
[2024-12-02 08:40:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:40:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118328093]
[2024-12-02 08:40:34,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:40:34,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:40:34,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:40:34,341 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:40:34,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-12-02 08:40:34,526 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:40:34,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:40:34,535 WARN L254 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 61 conjuncts are in the unsatisfiable core
[2024-12-02 08:40:34,539 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:40:34,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:40:34,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:40:34,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:40:35,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:40:35,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:40:35,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:40:35,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:40:35,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:40:35,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:40:35,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38
[2024-12-02 08:40:35,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:40:35,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38
[2024-12-02 08:40:38,137 INFO L349 Elim1Store]: treesize reduction 196, result has 34.0 percent of original size
[2024-12-02 08:40:38,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 71 treesize of output 135
[2024-12-02 08:40:39,666 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:40:39,669 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:40:39,821 INFO L349 Elim1Store]: treesize reduction 188, result has 13.4 percent of original size
[2024-12-02 08:40:39,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 8 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 40 case distinctions, treesize of input 78 treesize of output 91
[2024-12-02 08:40:43,444 INFO L349 Elim1Store]: treesize reduction 14, result has 86.4 percent of original size
[2024-12-02 08:40:43,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 133
[2024-12-02 08:40:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:40:44,128 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:41:14,788 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:41:14,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118328093]
[2024-12-02 08:41:14,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118328093] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:41:14,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [698704340]
[2024-12-02 08:41:14,788 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 08:41:14,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 08:41:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 08:41:14,789 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 08:41:14,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process
[2024-12-02 08:41:15,857 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:41:15,858 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:41:15,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 53 conjuncts are in the unsatisfiable core
[2024-12-02 08:41:15,865 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:41:16,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:41:16,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:41:16,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:41:16,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:41:16,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:41:16,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:41:16,950 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:41:16,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:41:17,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:41:17,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38
[2024-12-02 08:41:17,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:41:17,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38
[2024-12-02 08:41:18,405 INFO L349 Elim1Store]: treesize reduction 60, result has 48.7 percent of original size
[2024-12-02 08:41:18,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 79
[2024-12-02 08:41:21,304 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:41:21,320 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:41:21,473 INFO L349 Elim1Store]: treesize reduction 66, result has 18.5 percent of original size
[2024-12-02 08:41:21,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 50 treesize of output 51
[2024-12-02 08:41:30,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:41:30,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 234
[2024-12-02 08:41:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:41:47,290 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:42:33,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [698704340] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:42:33,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 08:42:33,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22] total 37
[2024-12-02 08:42:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838052825]
[2024-12-02 08:42:33,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:42:33,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2024-12-02 08:42:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 08:42:33,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2024-12-02 08:42:33,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=2866, Unknown=0, NotChecked=0, Total=3306
[2024-12-02 08:42:33,768 INFO L87 Difference]: Start difference. First operand 129 states and 146 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 35 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 08:42:42,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:42:46,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:42:51,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:42:57,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:43:01,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:43:05,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 08:43:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 08:43:05,974 INFO L93 Difference]: Finished difference Result 171 states and 195 transitions.
[2024-12-02 08:43:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2024-12-02 08:43:05,982 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 35 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41
[2024-12-02 08:43:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 08:43:05,983 INFO L225 Difference]: With dead ends: 171
[2024-12-02 08:43:05,983 INFO L226 Difference]: Without dead ends: 153
[2024-12-02 08:43:05,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 88.9s TimeCoverageRelationStatistics Valid=458, Invalid=3202, Unknown=0, NotChecked=0, Total=3660
[2024-12-02 08:43:05,984 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 49 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time
[2024-12-02 08:43:05,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 301 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 884 Invalid, 6 Unknown, 0 Unchecked, 29.3s Time]
[2024-12-02 08:43:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2024-12-02 08:43:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140.
[2024-12-02 08:43:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 119 states have (on average 1.1596638655462186) internal successors, (138), 119 states have internal predecessors, (138), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-12-02 08:43:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions.
[2024-12-02 08:43:06,021 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 41
[2024-12-02 08:43:06,021 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 08:43:06,021 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions.
[2024-12-02 08:43:06,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 35 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 08:43:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions.
[2024-12-02 08:43:06,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-12-02 08:43:06,022 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 08:43:06,022 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:43:06,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2024-12-02 08:43:06,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0
[2024-12-02 08:43:06,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 08:43:06,423 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 08:43:06,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:43:06,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2065625217, now seen corresponding path program 3 times
[2024-12-02 08:43:06,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 08:43:06,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888654653]
[2024-12-02 08:43:06,423 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:43:06,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:43:06,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:43:06,425 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:43:06,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-12-02 08:43:06,814 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-12-02 08:43:06,814 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:43:06,822 WARN L254 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 59 conjuncts are in the unsatisfiable core
[2024-12-02 08:43:06,826 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:43:07,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:43:07,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:43:07,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:43:07,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:43:07,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:43:07,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:43:07,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:43:07,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2024-12-02 08:43:08,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:43:08,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38
[2024-12-02 08:43:08,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 08:43:08,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38
[2024-12-02 08:43:10,734 INFO L349 Elim1Store]: treesize reduction 196, result has 34.0 percent of original size
[2024-12-02 08:43:10,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 71 treesize of output 135
[2024-12-02 08:43:12,478 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:43:12,482 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 08:43:12,651 INFO L349 Elim1Store]: treesize reduction 122, result has 29.5 percent of original size
[2024-12-02 08:43:12,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 71 treesize of output 115
[2024-12-02 08:43:17,955 INFO L349 Elim1Store]: treesize reduction 22, result has 78.6 percent of original size
[2024-12-02 08:43:17,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 133 treesize of output 175
[2024-12-02 08:43:18,272 INFO L349 Elim1Store]: treesize reduction 22, result has 78.6 percent of original size
[2024-12-02 08:43:18,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 103 treesize of output 145
[2024-12-02 08:43:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:43:19,620 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:44:16,022 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 08:44:16,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888654653]
[2024-12-02 08:44:16,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888654653] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:44:16,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [664754645]
[2024-12-02 08:44:16,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 08:44:16,023 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 08:44:16,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 08:44:16,025 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 08:44:16,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c40806-7d9d-446e-9f60-43c15da88819/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process
[2024-12-02 08:44:20,105 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-12-02 08:44:20,105 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:44:20,110 WARN L254 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 59 conjuncts are in the unsatisfiable core
[2024-12-02 08:44:20,114 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:44:20,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:44:20,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 08:44:21,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-12-02 08:44:21,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18