./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/max-3-n-u.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_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/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_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/max-3-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/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_c1262700-ba85-47d3-9968-2432590842c1/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 6c8d330fcf7e017e6b51632eb7a9f8f167fb4f3e932700b6ef82da7b1572a2f0
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 13:25:00,620 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 13:25:00,676 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-12-02 13:25:00,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 13:25:00,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 13:25:00,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 13:25:00,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 13:25:00,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 13:25:00,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 13:25:00,704 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 13:25:00,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 13:25:00,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 13:25:00,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 13:25:00,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 13:25:00,704 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 13:25:00,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 13:25:00,705 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 13:25:00,705 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 13:25:00,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 13:25:00,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 13:25:00,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 13:25:00,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:25:00,706 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 13:25:00,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 13:25:00,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 13:25:00,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 13:25:00,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:25:00,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 13:25:00,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 13:25:00,707 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 13:25:00,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 13:25:00,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 13:25:00,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 13:25:00,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 13:25:00,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 13:25:00,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 13:25:00,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 13:25:00,707 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_c1262700-ba85-47d3-9968-2432590842c1/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 -> 6c8d330fcf7e017e6b51632eb7a9f8f167fb4f3e932700b6ef82da7b1572a2f0
[2024-12-02 13:25:00,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 13:25:00,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 13:25:00,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 13:25:00,961 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 13:25:00,962 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 13:25:00,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-multidimensional/max-3-n-u.c
[2024-12-02 13:25:03,629 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data/741d19cb4/63ae11e3372c424c99aa5b5faf9be71a/FLAGeb4381dcc
[2024-12-02 13:25:03,809 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 13:25:03,809 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/sv-benchmarks/c/array-multidimensional/max-3-n-u.c
[2024-12-02 13:25:03,817 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data/741d19cb4/63ae11e3372c424c99aa5b5faf9be71a/FLAGeb4381dcc
[2024-12-02 13:25:04,177 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data/741d19cb4/63ae11e3372c424c99aa5b5faf9be71a
[2024-12-02 13:25:04,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 13:25:04,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 13:25:04,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 13:25:04,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 13:25:04,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 13:25:04,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d8e39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04, skipping insertion in model container
[2024-12-02 13:25:04,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,197 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 13:25:04,308 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_c1262700-ba85-47d3-9968-2432590842c1/sv-benchmarks/c/array-multidimensional/max-3-n-u.c[321,334]
[2024-12-02 13:25:04,329 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 13:25:04,336 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 13:25:04,343 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_c1262700-ba85-47d3-9968-2432590842c1/sv-benchmarks/c/array-multidimensional/max-3-n-u.c[321,334]
[2024-12-02 13:25:04,355 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 13:25:04,368 INFO L204 MainTranslator]: Completed translation
[2024-12-02 13:25:04,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04 WrapperNode
[2024-12-02 13:25:04,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 13:25:04,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 13:25:04,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 13:25:04,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 13:25:04,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,394 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100
[2024-12-02 13:25:04,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 13:25:04,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 13:25:04,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 13:25:04,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 13:25:04,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,405 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,416 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1].
[2024-12-02 13:25:04,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,420 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,426 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 13:25:04,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 13:25:04,428 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 13:25:04,429 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 13:25:04,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (1/1) ...
[2024-12-02 13:25:04,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:25:04,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:25:04,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 13:25:04,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 13:25:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 13:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 13:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-12-02 13:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-12-02 13:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-12-02 13:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-12-02 13:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 13:25:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 13:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-12-02 13:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-12-02 13:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-12-02 13:25:04,544 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 13:25:04,545 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 13:25:04,693 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live.
[2024-12-02 13:25:04,693 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 13:25:04,701 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 13:25:04,701 INFO L312 CfgBuilder]: Removed 9 assume(true) statements.
[2024-12-02 13:25:04,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:04 BoogieIcfgContainer
[2024-12-02 13:25:04,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 13:25:04,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 13:25:04,703 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 13:25:04,707 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 13:25:04,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:25:04" (1/3) ...
[2024-12-02 13:25:04,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2342930b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:25:04, skipping insertion in model container
[2024-12-02 13:25:04,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:04" (2/3) ...
[2024-12-02 13:25:04,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2342930b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:25:04, skipping insertion in model container
[2024-12-02 13:25:04,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:04" (3/3) ...
[2024-12-02 13:25:04,709 INFO L128 eAbstractionObserver]: Analyzing ICFG max-3-n-u.c
[2024-12-02 13:25:04,720 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 13:25:04,721 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG max-3-n-u.c that has 1 procedures, 38 locations, 1 initial locations, 9 loop locations, and 1 error locations.
[2024-12-02 13:25:04,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 13:25:04,777 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;@52384250, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 13:25:04,778 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 13:25:04,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:04,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-12-02 13:25:04,785 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:25:04,785 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:25:04,786 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:25:04,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:25:04,790 INFO L85 PathProgramCache]: Analyzing trace with hash -871451012, now seen corresponding path program 1 times
[2024-12-02 13:25:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:25:04,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153112978]
[2024-12-02 13:25:04,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:25:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:25:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:25:04,982 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 13:25:04,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:25:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153112978]
[2024-12-02 13:25:04,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153112978] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:25:04,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:25:04,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 13:25:04,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668529300]
[2024-12-02 13:25:04,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:25:04,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 13:25:04,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:25:05,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 13:25:05,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 13:25:05,006 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:25:05,064 INFO L93 Difference]: Finished difference Result 82 states and 126 transitions.
[2024-12-02 13:25:05,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 13:25:05,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-12-02 13:25:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:25:05,071 INFO L225 Difference]: With dead ends: 82
[2024-12-02 13:25:05,071 INFO L226 Difference]: Without dead ends: 42
[2024-12-02 13:25:05,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 13:25:05,076 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:25:05,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:25:05,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2024-12-02 13:25:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35.
[2024-12-02 13:25:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions.
[2024-12-02 13:25:05,101 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 14
[2024-12-02 13:25:05,101 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:25:05,101 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions.
[2024-12-02 13:25:05,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions.
[2024-12-02 13:25:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-12-02 13:25:05,102 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:25:05,103 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:25:05,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-12-02 13:25:05,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:25:05,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:25:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash 818940820, now seen corresponding path program 1 times
[2024-12-02 13:25:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:25:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182176235]
[2024-12-02 13:25:05,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:25:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:25:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:25:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:25:05,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:25:05,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182176235]
[2024-12-02 13:25:05,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182176235] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:25:05,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:25:05,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:25:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057802812]
[2024-12-02 13:25:05,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:25:05,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:25:05,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:25:05,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:25:05,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:25:05,214 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:25:05,275 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions.
[2024-12-02 13:25:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 13:25:05,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18
[2024-12-02 13:25:05,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:25:05,276 INFO L225 Difference]: With dead ends: 88
[2024-12-02 13:25:05,276 INFO L226 Difference]: Without dead ends: 56
[2024-12-02 13:25:05,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:25:05,278 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 86 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:25:05,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 56 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:25:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2024-12-02 13:25:05,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 38.
[2024-12-02 13:25:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions.
[2024-12-02 13:25:05,284 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 18
[2024-12-02 13:25:05,284 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:25:05,284 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions.
[2024-12-02 13:25:05,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions.
[2024-12-02 13:25:05,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-12-02 13:25:05,286 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:25:05,286 INFO L218 NwaCegarLoop]: trace histogram [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 13:25:05,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-12-02 13:25:05,286 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:25:05,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:25:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1774797922, now seen corresponding path program 1 times
[2024-12-02 13:25:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:25:05,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54496726]
[2024-12-02 13:25:05,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:25:05,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:25:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:25:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:25:05,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:25:05,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54496726]
[2024-12-02 13:25:05,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54496726] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:25:05,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:25:05,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:25:05,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204101755]
[2024-12-02 13:25:05,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:25:05,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:25:05,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:25:05,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:25:05,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:25:05,383 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:25:05,446 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions.
[2024-12-02 13:25:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 13:25:05,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2024-12-02 13:25:05,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:25:05,447 INFO L225 Difference]: With dead ends: 85
[2024-12-02 13:25:05,447 INFO L226 Difference]: Without dead ends: 50
[2024-12-02 13:25:05,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:25:05,448 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 48 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:25:05,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 59 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:25:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2024-12-02 13:25:05,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41.
[2024-12-02 13:25:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions.
[2024-12-02 13:25:05,456 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22
[2024-12-02 13:25:05,456 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:25:05,456 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions.
[2024-12-02 13:25:05,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,457 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions.
[2024-12-02 13:25:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-12-02 13:25:05,457 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:25:05,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:25:05,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-12-02 13:25:05,458 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:25:05,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:25:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1032290, now seen corresponding path program 1 times
[2024-12-02 13:25:05,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:25:05,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535339602]
[2024-12-02 13:25:05,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:25:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:25:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:25:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 13:25:05,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:25:05,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535339602]
[2024-12-02 13:25:05,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535339602] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:25:05,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:25:05,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:25:05,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554523217]
[2024-12-02 13:25:05,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:25:05,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:25:05,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:25:05,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:25:05,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:25:05,544 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:25:05,600 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions.
[2024-12-02 13:25:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 13:25:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2024-12-02 13:25:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:25:05,601 INFO L225 Difference]: With dead ends: 91
[2024-12-02 13:25:05,601 INFO L226 Difference]: Without dead ends: 76
[2024-12-02 13:25:05,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:25:05,602 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 90 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:25:05,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 59 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:25:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2024-12-02 13:25:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 42.
[2024-12-02 13:25:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2024-12-02 13:25:05,611 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 24
[2024-12-02 13:25:05,611 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:25:05,611 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2024-12-02 13:25:05,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:05,611 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2024-12-02 13:25:05,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-12-02 13:25:05,612 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:25:05,612 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:25:05,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-12-02 13:25:05,612 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:25:05,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:25:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash -28942918, now seen corresponding path program 1 times
[2024-12-02 13:25:05,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:25:05,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931233005]
[2024-12-02 13:25:05,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:25:05,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:25:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:25:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 13:25:05,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:25:05,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931233005]
[2024-12-02 13:25:05,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931233005] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:25:05,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658586231]
[2024-12-02 13:25:05,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:25:05,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:25:05,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:25:05,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:25:05,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 13:25:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:25:05,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 13:25:05,781 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:25:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 13:25:05,847 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 13:25:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 13:25:05,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658586231] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 13:25:05,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 13:25:05,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2024-12-02 13:25:05,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66853423]
[2024-12-02 13:25:05,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 13:25:05,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 13:25:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:25:05,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 13:25:05,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90
[2024-12-02 13:25:05,888 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:06,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:25:06,017 INFO L93 Difference]: Finished difference Result 117 states and 147 transitions.
[2024-12-02 13:25:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 13:25:06,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2024-12-02 13:25:06,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:25:06,019 INFO L225 Difference]: With dead ends: 117
[2024-12-02 13:25:06,019 INFO L226 Difference]: Without dead ends: 78
[2024-12-02 13:25:06,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:25:06,020 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 200 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 13:25:06,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 135 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 13:25:06,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2024-12-02 13:25:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72.
[2024-12-02 13:25:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions.
[2024-12-02 13:25:06,034 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 36
[2024-12-02 13:25:06,034 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:25:06,034 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions.
[2024-12-02 13:25:06,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions.
[2024-12-02 13:25:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2024-12-02 13:25:06,035 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:25:06,035 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:25:06,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 13:25:06,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:25:06,236 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:25:06,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:25:06,237 INFO L85 PathProgramCache]: Analyzing trace with hash 137623486, now seen corresponding path program 2 times
[2024-12-02 13:25:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:25:06,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176565441]
[2024-12-02 13:25:06,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 13:25:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:25:06,262 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 13:25:06,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 13:25:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked.
[2024-12-02 13:25:06,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:25:06,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176565441]
[2024-12-02 13:25:06,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176565441] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:25:06,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730398581]
[2024-12-02 13:25:06,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 13:25:06,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:25:06,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:25:06,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:25:06,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 13:25:06,420 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 13:25:06,420 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 13:25:06,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-12-02 13:25:06,423 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:25:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2024-12-02 13:25:06,537 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 13:25:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2024-12-02 13:25:06,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730398581] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 13:25:06,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 13:25:06,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16
[2024-12-02 13:25:06,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56140013]
[2024-12-02 13:25:06,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 13:25:06,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-12-02 13:25:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:25:06,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-12-02 13:25:06,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240
[2024-12-02 13:25:06,639 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:07,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:25:07,346 INFO L93 Difference]: Finished difference Result 274 states and 342 transitions.
[2024-12-02 13:25:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2024-12-02 13:25:07,347 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2024-12-02 13:25:07,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:25:07,348 INFO L225 Difference]: With dead ends: 274
[2024-12-02 13:25:07,348 INFO L226 Difference]: Without dead ends: 205
[2024-12-02 13:25:07,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=643, Invalid=1163, Unknown=0, NotChecked=0, Total=1806
[2024-12-02 13:25:07,350 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 437 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 13:25:07,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 211 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 13:25:07,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states.
[2024-12-02 13:25:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 160.
[2024-12-02 13:25:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.1886792452830188) internal successors, (189), 159 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions.
[2024-12-02 13:25:07,375 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 54
[2024-12-02 13:25:07,375 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:25:07,376 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions.
[2024-12-02 13:25:07,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:07,376 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions.
[2024-12-02 13:25:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2024-12-02 13:25:07,377 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:25:07,377 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 10, 10, 10, 10, 2, 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, 1, 1, 1]
[2024-12-02 13:25:07,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 13:25:07,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-12-02 13:25:07,578 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:25:07,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:25:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash 240550288, now seen corresponding path program 3 times
[2024-12-02 13:25:07,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:25:07,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606575190]
[2024-12-02 13:25:07,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 13:25:07,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:25:07,607 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 13:25:07,607 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 13:25:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked.
[2024-12-02 13:25:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:25:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606575190]
[2024-12-02 13:25:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606575190] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:25:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941139303]
[2024-12-02 13:25:07,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 13:25:07,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:25:07,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:25:07,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:25:07,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 13:25:07,727 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 13:25:07,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 13:25:07,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 13:25:07,732 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:25:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked.
[2024-12-02 13:25:07,995 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 13:25:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked.
[2024-12-02 13:25:08,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941139303] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 13:25:08,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 13:25:08,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2024-12-02 13:25:08,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037918722]
[2024-12-02 13:25:08,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 13:25:08,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 13:25:08,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:25:08,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 13:25:08,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90
[2024-12-02 13:25:08,166 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:25:08,304 INFO L93 Difference]: Finished difference Result 612 states and 743 transitions.
[2024-12-02 13:25:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 13:25:08,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118
[2024-12-02 13:25:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:25:08,308 INFO L225 Difference]: With dead ends: 612
[2024-12-02 13:25:08,308 INFO L226 Difference]: Without dead ends: 511
[2024-12-02 13:25:08,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:25:08,309 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 337 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 13:25:08,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 169 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 13:25:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states.
[2024-12-02 13:25:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 360.
[2024-12-02 13:25:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.1949860724233983) internal successors, (429), 359 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 429 transitions.
[2024-12-02 13:25:08,352 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 429 transitions. Word has length 118
[2024-12-02 13:25:08,352 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:25:08,353 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 429 transitions.
[2024-12-02 13:25:08,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:25:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 429 transitions.
[2024-12-02 13:25:08,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319
[2024-12-02 13:25:08,358 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:25:08,358 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:25:08,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-12-02 13:25:08,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:25:08,559 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:25:08,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:25:08,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1222378076, now seen corresponding path program 4 times
[2024-12-02 13:25:08,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:25:08,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134944950]
[2024-12-02 13:25:08,560 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 13:25:08,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:25:08,742 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 13:25:08,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 13:25:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5136 backedges. 688 proven. 1 refuted. 0 times theorem prover too weak. 4447 trivial. 0 not checked.
[2024-12-02 13:25:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:25:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134944950]
[2024-12-02 13:25:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134944950] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:25:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996540650]
[2024-12-02 13:25:08,970 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 13:25:08,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:25:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:25:08,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:25:08,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 13:25:09,166 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 13:25:09,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 13:25:09,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 131 conjuncts are in the unsatisfiable core
[2024-12-02 13:25:09,185 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:26:59,730 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/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 13:26:59,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101
[2024-12-02 13:26:59,731 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception
[2024-12-02 13:26:59,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 13:26:59,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:26:59,932 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_c1262700-ba85-47d3-9968-2432590842c1/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.parseCheckSatResult(Executor.java:281)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.<init>(PredicateUnifier.java:786)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555)
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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
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)
... 45 more
[2024-12-02 13:26:59,937 INFO L158 Benchmark]: Toolchain (without parser) took 115757.03ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 117.2MB in the beginning and 240.4MB in the end (delta: -123.2MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB.
[2024-12-02 13:26:59,937 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 13:26:59,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.40ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 105.7MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 13:26:59,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.94ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 13:26:59,938 INFO L158 Benchmark]: Boogie Preprocessor took 33.33ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 102.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 13:26:59,938 INFO L158 Benchmark]: RCFGBuilder took 273.37ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 89.7MB in the end (delta: 13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 13:26:59,939 INFO L158 Benchmark]: TraceAbstraction took 115232.44ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 88.9MB in the beginning and 240.4MB in the end (delta: -151.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB.
[2024-12-02 13:26:59,940 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 188.40ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 105.7MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 24.94ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 33.33ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 102.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 273.37ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 89.7MB in the end (delta: 13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 115232.44ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 88.9MB in the beginning and 240.4MB in the end (delta: -151.5MB). Peak memory consumption was 9.4MB. 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_c1262700-ba85-47d3-9968-2432590842c1/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_c1262700-ba85-47d3-9968-2432590842c1/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_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/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_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/max-3-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/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_c1262700-ba85-47d3-9968-2432590842c1/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 6c8d330fcf7e017e6b51632eb7a9f8f167fb4f3e932700b6ef82da7b1572a2f0
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 13:27:01,758 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 13:27:01,845 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-12-02 13:27:01,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 13:27:01,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 13:27:01,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 13:27:01,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 13:27:01,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 13:27:01,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 13:27:01,878 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 13:27:01,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 13:27:01,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 13:27:01,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 13:27:01,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 13:27:01,878 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 13:27:01,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-12-02 13:27:01,879 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 13:27:01,880 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:27:01,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 13:27:01,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 13:27:01,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:27:01,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 13:27:01,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 13:27:01,881 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 13:27:01,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 13:27:01,881 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-12-02 13:27:01,882 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-12-02 13:27:01,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 13:27:01,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 13:27:01,882 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 13:27:01,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 13:27:01,882 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_c1262700-ba85-47d3-9968-2432590842c1/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 -> 6c8d330fcf7e017e6b51632eb7a9f8f167fb4f3e932700b6ef82da7b1572a2f0
[2024-12-02 13:27:02,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 13:27:02,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 13:27:02,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 13:27:02,165 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 13:27:02,166 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 13:27:02,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-multidimensional/max-3-n-u.c
[2024-12-02 13:27:04,948 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data/44013941c/a3fb058232294a8993c0074f036dbcf9/FLAG1e69b061a
[2024-12-02 13:27:05,132 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 13:27:05,132 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/sv-benchmarks/c/array-multidimensional/max-3-n-u.c
[2024-12-02 13:27:05,140 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data/44013941c/a3fb058232294a8993c0074f036dbcf9/FLAG1e69b061a
[2024-12-02 13:27:05,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/data/44013941c/a3fb058232294a8993c0074f036dbcf9
[2024-12-02 13:27:05,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 13:27:05,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 13:27:05,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 13:27:05,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 13:27:05,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 13:27:05,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6edf73a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05, skipping insertion in model container
[2024-12-02 13:27:05,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,179 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 13:27:05,289 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_c1262700-ba85-47d3-9968-2432590842c1/sv-benchmarks/c/array-multidimensional/max-3-n-u.c[321,334]
[2024-12-02 13:27:05,312 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 13:27:05,320 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 13:27:05,329 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_c1262700-ba85-47d3-9968-2432590842c1/sv-benchmarks/c/array-multidimensional/max-3-n-u.c[321,334]
[2024-12-02 13:27:05,342 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 13:27:05,357 INFO L204 MainTranslator]: Completed translation
[2024-12-02 13:27:05,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05 WrapperNode
[2024-12-02 13:27:05,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 13:27:05,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 13:27:05,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 13:27:05,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 13:27:05,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,388 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99
[2024-12-02 13:27:05,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 13:27:05,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 13:27:05,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 13:27:05,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 13:27:05,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,412 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1].
[2024-12-02 13:27:05,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,420 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 13:27:05,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 13:27:05,432 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 13:27:05,432 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 13:27:05,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (1/1) ...
[2024-12-02 13:27:05,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:27:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:27:05,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 13:27:05,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 13:27:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 13:27:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-12-02 13:27:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-12-02 13:27:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-12-02 13:27:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0
[2024-12-02 13:27:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1
[2024-12-02 13:27:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 13:27:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 13:27:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-12-02 13:27:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0
[2024-12-02 13:27:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1
[2024-12-02 13:27:05,549 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 13:27:05,550 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 13:27:05,877 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live.
[2024-12-02 13:27:05,877 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 13:27:05,886 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 13:27:05,886 INFO L312 CfgBuilder]: Removed 9 assume(true) statements.
[2024-12-02 13:27:05,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:27:05 BoogieIcfgContainer
[2024-12-02 13:27:05,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 13:27:05,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 13:27:05,888 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 13:27:05,893 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 13:27:05,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:27:05" (1/3) ...
[2024-12-02 13:27:05,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de44cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:27:05, skipping insertion in model container
[2024-12-02 13:27:05,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:05" (2/3) ...
[2024-12-02 13:27:05,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de44cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:27:05, skipping insertion in model container
[2024-12-02 13:27:05,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:27:05" (3/3) ...
[2024-12-02 13:27:05,895 INFO L128 eAbstractionObserver]: Analyzing ICFG max-3-n-u.c
[2024-12-02 13:27:05,913 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 13:27:05,914 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG max-3-n-u.c that has 1 procedures, 38 locations, 1 initial locations, 9 loop locations, and 1 error locations.
[2024-12-02 13:27:05,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 13:27:05,961 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;@1cdd02d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 13:27:05,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 13:27:05,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:05,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-12-02 13:27:05,968 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:27:05,969 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:27:05,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:27:05,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:27:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash -871451012, now seen corresponding path program 1 times
[2024-12-02 13:27:05,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 13:27:05,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398538820]
[2024-12-02 13:27:05,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:27:05,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:05,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:27:05,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:27:05,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 13:27:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:27:06,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-12-02 13:27:06,090 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:27:06,141 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 13:27:06,141 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:27:06,142 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 13:27:06,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398538820]
[2024-12-02 13:27:06,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398538820] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:27:06,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:27:06,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 13:27:06,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708058426]
[2024-12-02 13:27:06,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:27:06,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 13:27:06,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 13:27:06,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 13:27:06,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 13:27:06,171 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:27:06,435 INFO L93 Difference]: Finished difference Result 82 states and 126 transitions.
[2024-12-02 13:27:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 13:27:06,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-12-02 13:27:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:27:06,446 INFO L225 Difference]: With dead ends: 82
[2024-12-02 13:27:06,446 INFO L226 Difference]: Without dead ends: 42
[2024-12-02 13:27:06,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 13:27:06,450 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 13:27:06,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 13:27:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2024-12-02 13:27:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35.
[2024-12-02 13:27:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions.
[2024-12-02 13:27:06,480 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 14
[2024-12-02 13:27:06,480 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:27:06,480 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions.
[2024-12-02 13:27:06,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions.
[2024-12-02 13:27:06,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-12-02 13:27:06,481 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:27:06,481 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:27:06,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 13:27:06,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:06,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:27:06,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:27:06,683 INFO L85 PathProgramCache]: Analyzing trace with hash 818940820, now seen corresponding path program 1 times
[2024-12-02 13:27:06,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 13:27:06,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543007791]
[2024-12-02 13:27:06,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:27:06,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:06,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:27:06,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:27:06,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 13:27:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:27:06,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-12-02 13:27:06,764 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:27:06,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:27:06,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:27:06,797 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 13:27:06,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543007791]
[2024-12-02 13:27:06,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543007791] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:27:06,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:27:06,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:27:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612484415]
[2024-12-02 13:27:06,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:27:06,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:27:06,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 13:27:06,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:27:06,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:27:06,799 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:27:07,096 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions.
[2024-12-02 13:27:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 13:27:07,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18
[2024-12-02 13:27:07,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:27:07,102 INFO L225 Difference]: With dead ends: 88
[2024-12-02 13:27:07,102 INFO L226 Difference]: Without dead ends: 56
[2024-12-02 13:27:07,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:27:07,103 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 62 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 13:27:07,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 57 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-12-02 13:27:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2024-12-02 13:27:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 38.
[2024-12-02 13:27:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions.
[2024-12-02 13:27:07,112 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 18
[2024-12-02 13:27:07,113 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:27:07,113 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions.
[2024-12-02 13:27:07,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions.
[2024-12-02 13:27:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-12-02 13:27:07,114 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:27:07,114 INFO L218 NwaCegarLoop]: trace histogram [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 13:27:07,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-12-02 13:27:07,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:07,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:27:07,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:27:07,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1774797922, now seen corresponding path program 1 times
[2024-12-02 13:27:07,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 13:27:07,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696036703]
[2024-12-02 13:27:07,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:27:07,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:07,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:27:07,317 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:27:07,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 13:27:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:27:07,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-12-02 13:27:07,412 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:27:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:27:07,450 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:27:07,451 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 13:27:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696036703]
[2024-12-02 13:27:07,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696036703] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:27:07,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:27:07,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:27:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701414885]
[2024-12-02 13:27:07,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:27:07,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:27:07,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 13:27:07,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:27:07,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:27:07,452 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:27:07,752 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions.
[2024-12-02 13:27:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 13:27:07,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2024-12-02 13:27:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:27:07,759 INFO L225 Difference]: With dead ends: 85
[2024-12-02 13:27:07,759 INFO L226 Difference]: Without dead ends: 50
[2024-12-02 13:27:07,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:27:07,760 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 60 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 13:27:07,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 58 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-12-02 13:27:07,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2024-12-02 13:27:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41.
[2024-12-02 13:27:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions.
[2024-12-02 13:27:07,771 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22
[2024-12-02 13:27:07,771 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:27:07,771 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions.
[2024-12-02 13:27:07,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions.
[2024-12-02 13:27:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-12-02 13:27:07,772 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:27:07,772 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:27:07,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-12-02 13:27:07,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:07,972 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:27:07,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:27:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1032290, now seen corresponding path program 1 times
[2024-12-02 13:27:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 13:27:07,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656590309]
[2024-12-02 13:27:07,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:27:07,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:07,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:27:07,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:27:07,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 13:27:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:27:08,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-12-02 13:27:08,079 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:27:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 13:27:08,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:27:08,151 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 13:27:08,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656590309]
[2024-12-02 13:27:08,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656590309] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:27:08,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:27:08,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:27:08,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995944942]
[2024-12-02 13:27:08,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:27:08,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:27:08,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 13:27:08,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:27:08,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:27:08,153 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:27:08,530 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions.
[2024-12-02 13:27:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 13:27:08,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2024-12-02 13:27:08,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:27:08,536 INFO L225 Difference]: With dead ends: 91
[2024-12-02 13:27:08,537 INFO L226 Difference]: Without dead ends: 76
[2024-12-02 13:27:08,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:27:08,538 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 64 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 13:27:08,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 60 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 13:27:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2024-12-02 13:27:08,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 42.
[2024-12-02 13:27:08,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2024-12-02 13:27:08,549 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 24
[2024-12-02 13:27:08,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:27:08,549 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2024-12-02 13:27:08,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2024-12-02 13:27:08,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-12-02 13:27:08,550 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:27:08,550 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:27:08,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 13:27:08,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:08,751 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:27:08,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:27:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash -28942918, now seen corresponding path program 1 times
[2024-12-02 13:27:08,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 13:27:08,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065018189]
[2024-12-02 13:27:08,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:27:08,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:08,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:27:08,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:27:08,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 13:27:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:27:08,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 13:27:08,905 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:27:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-12-02 13:27:09,026 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 13:27:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-12-02 13:27:09,100 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 13:27:09,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065018189]
[2024-12-02 13:27:09,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065018189] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 13:27:09,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 13:27:09,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2024-12-02 13:27:09,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316351409]
[2024-12-02 13:27:09,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 13:27:09,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:27:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 13:27:09,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:27:09,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2024-12-02 13:27:09,102 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:27:09,525 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions.
[2024-12-02 13:27:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 13:27:09,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2024-12-02 13:27:09,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:27:09,527 INFO L225 Difference]: With dead ends: 101
[2024-12-02 13:27:09,527 INFO L226 Difference]: Without dead ends: 72
[2024-12-02 13:27:09,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2024-12-02 13:27:09,528 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 59 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 13:27:09,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 125 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 13:27:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2024-12-02 13:27:09,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72.
[2024-12-02 13:27:09,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:09,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions.
[2024-12-02 13:27:09,545 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 36
[2024-12-02 13:27:09,545 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:27:09,546 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions.
[2024-12-02 13:27:09,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:09,546 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions.
[2024-12-02 13:27:09,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-12-02 13:27:09,547 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:27:09,547 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:27:09,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 13:27:09,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:09,748 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:27:09,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:27:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1336306836, now seen corresponding path program 2 times
[2024-12-02 13:27:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 13:27:09,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271305292]
[2024-12-02 13:27:09,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 13:27:09,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:09,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:27:09,750 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:27:09,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 13:27:09,964 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 13:27:09,964 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 13:27:09,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 13:27:09,993 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:27:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked.
[2024-12-02 13:27:10,228 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 13:27:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked.
[2024-12-02 13:27:10,429 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 13:27:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271305292]
[2024-12-02 13:27:10,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271305292] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 13:27:10,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 13:27:10,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2024-12-02 13:27:10,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265041367]
[2024-12-02 13:27:10,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 13:27:10,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-12-02 13:27:10,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 13:27:10,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-12-02 13:27:10,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2024-12-02 13:27:10,431 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:11,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:27:11,198 INFO L93 Difference]: Finished difference Result 259 states and 326 transitions.
[2024-12-02 13:27:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 13:27:11,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66
[2024-12-02 13:27:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:27:11,201 INFO L225 Difference]: With dead ends: 259
[2024-12-02 13:27:11,201 INFO L226 Difference]: Without dead ends: 198
[2024-12-02 13:27:11,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2024-12-02 13:27:11,202 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 196 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-12-02 13:27:11,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 124 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-12-02 13:27:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states.
[2024-12-02 13:27:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192.
[2024-12-02 13:27:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.2094240837696335) internal successors, (231), 191 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 231 transitions.
[2024-12-02 13:27:11,240 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 231 transitions. Word has length 66
[2024-12-02 13:27:11,240 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:27:11,240 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 231 transitions.
[2024-12-02 13:27:11,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 231 transitions.
[2024-12-02 13:27:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2024-12-02 13:27:11,243 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:27:11,244 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:27:11,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 13:27:11,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:11,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:27:11,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:27:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2053814401, now seen corresponding path program 3 times
[2024-12-02 13:27:11,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 13:27:11,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148196723]
[2024-12-02 13:27:11,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 13:27:11,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:11,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:27:11,447 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:27:11,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-12-02 13:27:11,573 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 13:27:11,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 13:27:11,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 13:27:11,584 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:27:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked.
[2024-12-02 13:27:12,076 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 13:27:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked.
[2024-12-02 13:27:12,442 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 13:27:12,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148196723]
[2024-12-02 13:27:12,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148196723] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 13:27:12,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 13:27:12,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2024-12-02 13:27:12,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873905525]
[2024-12-02 13:27:12,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 13:27:12,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-12-02 13:27:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 13:27:12,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-12-02 13:27:12,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2024-12-02 13:27:12,443 INFO L87 Difference]: Start difference. First operand 192 states and 231 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:27:12,994 INFO L93 Difference]: Finished difference Result 454 states and 555 transitions.
[2024-12-02 13:27:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 13:27:12,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162
[2024-12-02 13:27:12,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:27:12,997 INFO L225 Difference]: With dead ends: 454
[2024-12-02 13:27:12,997 INFO L226 Difference]: Without dead ends: 415
[2024-12-02 13:27:12,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2024-12-02 13:27:12,998 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 352 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-12-02 13:27:12,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 143 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-12-02 13:27:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states.
[2024-12-02 13:27:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 300.
[2024-12-02 13:27:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.2240802675585285) internal successors, (366), 299 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 366 transitions.
[2024-12-02 13:27:13,044 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 366 transitions. Word has length 162
[2024-12-02 13:27:13,044 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:27:13,044 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 366 transitions.
[2024-12-02 13:27:13,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 13:27:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 366 transitions.
[2024-12-02 13:27:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271
[2024-12-02 13:27:13,049 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:27:13,049 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:27:13,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-12-02 13:27:13,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:13,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:27:13,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:27:13,250 INFO L85 PathProgramCache]: Analyzing trace with hash 453810632, now seen corresponding path program 4 times
[2024-12-02 13:27:13,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 13:27:13,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167377551]
[2024-12-02 13:27:13,251 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 13:27:13,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:27:13,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:27:13,253 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:27:13,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1262700-ba85-47d3-9968-2432590842c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process