./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/count_up_down-2.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_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/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_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/count_up_down-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/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_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/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 39220193a6f0ba3a591d213916c0080f2ed370d08893716849d141f50c2ee13d
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 13:25:03,640 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 13:25:03,697 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-12-02 13:25:03,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 13:25:03,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 13:25:03,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 13:25:03,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 13:25:03,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 13:25:03,724 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 13:25:03,724 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 13:25:03,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 13:25:03,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 13:25:03,725 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 13:25:03,725 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 13:25:03,725 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 13:25:03,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 13:25:03,726 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 13:25:03,726 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 13:25:03,726 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 13:25:03,726 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 13:25:03,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 13:25:03,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 13:25:03,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 13:25:03,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 13:25:03,726 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 13:25:03,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 13:25:03,727 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 13:25:03,727 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 13:25:03,727 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 13:25:03,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 13:25:03,727 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 13:25:03,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 13:25:03,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:25:03,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 13:25:03,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 13:25:03,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 13:25:03,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 13:25:03,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:25:03,728 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 13:25:03,728 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 13:25:03,728 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 13:25:03,728 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 13:25:03,728 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 13:25:03,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 13:25:03,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 13:25:03,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 13:25:03,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 13:25:03,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 13:25:03,729 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_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/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 -> 39220193a6f0ba3a591d213916c0080f2ed370d08893716849d141f50c2ee13d
[2024-12-02 13:25:03,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 13:25:03,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 13:25:03,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 13:25:03,954 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 13:25:03,954 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 13:25:03,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/loops/count_up_down-2.c
[2024-12-02 13:25:06,558 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/data/8e4b5449e/d289414d82fe4e169002c81b889ea16c/FLAGf2adda2dc
[2024-12-02 13:25:06,742 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 13:25:06,742 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/sv-benchmarks/c/loops/count_up_down-2.c
[2024-12-02 13:25:06,749 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/data/8e4b5449e/d289414d82fe4e169002c81b889ea16c/FLAGf2adda2dc
[2024-12-02 13:25:07,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/data/8e4b5449e/d289414d82fe4e169002c81b889ea16c
[2024-12-02 13:25:07,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 13:25:07,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 13:25:07,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 13:25:07,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 13:25:07,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 13:25:07,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ef0782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07, skipping insertion in model container
[2024-12-02 13:25:07,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,125 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 13:25:07,214 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_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/sv-benchmarks/c/loops/count_up_down-2.c[327,340]
[2024-12-02 13:25:07,227 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 13:25:07,234 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 13:25:07,245 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_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/sv-benchmarks/c/loops/count_up_down-2.c[327,340]
[2024-12-02 13:25:07,247 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 13:25:07,258 INFO L204 MainTranslator]: Completed translation
[2024-12-02 13:25:07,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07 WrapperNode
[2024-12-02 13:25:07,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 13:25:07,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 13:25:07,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 13:25:07,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 13:25:07,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,281 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30
[2024-12-02 13:25:07,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 13:25:07,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 13:25:07,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 13:25:07,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 13:25:07,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,299 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-12-02 13:25:07,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,301 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 13:25:07,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 13:25:07,308 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 13:25:07,308 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 13:25:07,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (1/1) ...
[2024-12-02 13:25:07,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:25:07,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:25:07,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 13:25:07,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 13:25:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 13:25:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 13:25:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 13:25:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 13:25:07,432 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 13:25:07,434 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 13:25:07,502 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live.
[2024-12-02 13:25:07,502 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 13:25:07,508 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 13:25:07,509 INFO L312 CfgBuilder]: Removed 1 assume(true) statements.
[2024-12-02 13:25:07,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:07 BoogieIcfgContainer
[2024-12-02 13:25:07,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 13:25:07,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 13:25:07,511 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 13:25:07,514 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 13:25:07,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:25:07" (1/3) ...
[2024-12-02 13:25:07,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86b92f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:25:07, skipping insertion in model container
[2024-12-02 13:25:07,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:07" (2/3) ...
[2024-12-02 13:25:07,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86b92f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:25:07, skipping insertion in model container
[2024-12-02 13:25:07,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:07" (3/3) ...
[2024-12-02 13:25:07,516 INFO L128 eAbstractionObserver]: Analyzing ICFG count_up_down-2.c
[2024-12-02 13:25:07,528 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 13:25:07,530 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG count_up_down-2.c that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-12-02 13:25:07,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 13:25:07,592 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;@65f1df8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 13:25:07,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 13:25:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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 13:25:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-12-02 13:25:07,600 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 13:25:07,600 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-12-02 13:25:07,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:25:07,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:25:07,606 INFO L85 PathProgramCache]: Analyzing trace with hash 889664619, now seen corresponding path program 1 times
[2024-12-02 13:25:07,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:25:07,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389854449]
[2024-12-02 13:25:07,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:25:07,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:25:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-12-02 13:25:07,683 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-12-02 13:25:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-12-02 13:25:07,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-12-02 13:25:07,713 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-12-02 13:25:07,714 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-12-02 13:25:07,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-12-02 13:25:07,720 INFO L422 BasicCegarLoop]: Path program histogram: [1]
[2024-12-02 13:25:07,734 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-12-02 13:25:07,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:25:07 BoogieIcfgContainer
[2024-12-02 13:25:07,736 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-12-02 13:25:07,737 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-12-02 13:25:07,737 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-12-02 13:25:07,737 INFO L274 PluginConnector]: Witness Printer initialized
[2024-12-02 13:25:07,737 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:07" (3/4) ...
[2024-12-02 13:25:07,738 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample
[2024-12-02 13:25:07,763 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 4.
[2024-12-02 13:25:07,793 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml
[2024-12-02 13:25:07,793 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/witness.yml
[2024-12-02 13:25:07,793 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-12-02 13:25:07,794 INFO L158 Benchmark]: Toolchain (without parser) took 684.34ms. Allocated memory is still 142.6MB. Free memory was 118.8MB in the beginning and 79.6MB in the end (delta: 39.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB.
[2024-12-02 13:25:07,795 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 13:25:07,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.02ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 107.9MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 13:25:07,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.09ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 106.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 13:25:07,796 INFO L158 Benchmark]: Boogie Preprocessor took 25.05ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 13:25:07,796 INFO L158 Benchmark]: RCFGBuilder took 201.69ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 96.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 13:25:07,796 INFO L158 Benchmark]: TraceAbstraction took 225.65ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 83.5MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 13:25:07,797 INFO L158 Benchmark]: Witness Printer took 56.87ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 79.6MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 13:25:07,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 148.02ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 107.9MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 22.09ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 106.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 25.05ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 201.69ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 96.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 225.65ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 83.5MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Witness Printer took 56.87ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 79.6MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: 7]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L15] unsigned int n = __VERIFIER_nondet_uint();
[L16] unsigned int x=n, y=0;
VAL [n=0, x=0, y=0]
[L17] COND FALSE !(x>0)
VAL [n=0, y=0]
[L22] CALL __VERIFIER_assert(y!=n)
[L6] COND TRUE !(cond)
[L7] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2024-12-02 13:25:07,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb0336c-ac8c-4d3b-8f5a-3f0ad36c57b2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE