./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label26.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --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 99ca606f39e8e89c81ae97710d3cffb62ce706661ab0895e651aaa8a954b23f1
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:23:21,182 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:23:21,184 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:23:21,245 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:23:21,246 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:23:21,251 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:23:21,253 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:23:21,257 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:23:21,260 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:23:21,268 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:23:21,269 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:23:21,271 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:23:21,272 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:23:21,277 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:23:21,280 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:23:21,289 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:23:21,291 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:23:21,293 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:23:21,295 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:23:21,303 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:23:21,305 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:23:21,307 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:23:21,311 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:23:21,312 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:23:21,324 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:23:21,325 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:23:21,325 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:23:21,327 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:23:21,328 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:23:21,330 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:23:21,330 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:23:21,331 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:23:21,332 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:23:21,333 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:23:21,334 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:23:21,334 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:23:21,335 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:23:21,335 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:23:21,335 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:23:21,336 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:23:21,336 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:23:21,338 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 18:23:21,394 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-13 18:23:21,395 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:23:21,396 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:23:21,396 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:23:21,403 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:23:21,404 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:23:21,405 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:23:21,405 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-11-13 18:23:21,405 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-11-13 18:23:21,406 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:23:21,407 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-11-13 18:23:21,407 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-13 18:23:21,407 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-11-13 18:23:21,408 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-13 18:23:21,408 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:23:21,408 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:23:21,408 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:23:21,409 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-11-13 18:23:21,409 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-13 18:23:21,409 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-13 18:23:21,409 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:23:21,410 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:23:21,410 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-11-13 18:23:21,410 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-13 18:23:21,410 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:23:21,411 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:23:21,411 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:23:21,411 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:23:21,411 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-11-13 18:23:21,413 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:23:21,413 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:23:21,413 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:23:21,414 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:23:21,414 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-11-13 18:23:21,414 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
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_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 -> 99ca606f39e8e89c81ae97710d3cffb62ce706661ab0895e651aaa8a954b23f1
[2021-11-13 18:23:21,743 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:23:21,771 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:23:21,774 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:23:21,775 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-13 18:23:21,776 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-13 18:23:21,778 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/eca-rers2012/Problem07_label26.c
[2021-11-13 18:23:21,863 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/data/d1b06eb2b/543a43f2df1f4471ad7a3969467aafa3/FLAG959d4cc84
[2021-11-13 18:23:24,825 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-13 18:23:24,826 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/sv-benchmarks/c/eca-rers2012/Problem07_label26.c
[2021-11-13 18:23:24,992 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/data/d1b06eb2b/543a43f2df1f4471ad7a3969467aafa3/FLAG959d4cc84
[2021-11-13 18:23:25,222 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/data/d1b06eb2b/543a43f2df1f4471ad7a3969467aafa3
[2021-11-13 18:23:25,224 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:23:25,225 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:23:25,227 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:23:25,227 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:23:25,231 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:23:25,232 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:23:25" (1/1) ...
[2021-11-13 18:23:25,234 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e46253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:25, skipping insertion in model container
[2021-11-13 18:23:25,234 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:23:25" (1/1) ...
[2021-11-13 18:23:25,242 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-13 18:23:26,563 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:23:38,788 WARN  L228   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_6fba9703-a412-4225-8ddb-836bbbff797f/sv-benchmarks/c/eca-rers2012/Problem07_label26.c[2775806,2775819]
[2021-11-13 18:23:38,849 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:23:38,858 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-13 18:23:46,252 WARN  L228   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_6fba9703-a412-4225-8ddb-836bbbff797f/sv-benchmarks/c/eca-rers2012/Problem07_label26.c[2775806,2775819]
[2021-11-13 18:23:46,256 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:23:47,431 INFO  L208         MainTranslator]: Completed translation
[2021-11-13 18:23:47,432 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47 WrapperNode
[2021-11-13 18:23:47,432 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:23:47,433 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:23:47,433 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:23:47,433 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:23:47,441 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:48,518 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:51,101 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:23:51,102 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:23:51,102 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:23:51,103 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:23:51,111 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:51,112 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:51,653 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:51,653 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:52,866 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:53,107 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:53,478 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:53,924 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:23:53,925 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:23:53,925 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:23:53,926 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:23:53,927 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (1/1) ...
[2021-11-13 18:23:53,941 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:23:53,953 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:23:53,969 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:23:53,972 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fba9703-a412-4225-8ddb-836bbbff797f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:23:54,011 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:23:54,011 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 18:23:54,011 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:23:54,012 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:24:34,948 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:24:34,948 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 18:24:34,961 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:24:34 BoogieIcfgContainer
[2021-11-13 18:24:34,961 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:24:34,963 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:24:34,963 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:24:34,967 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:24:34,968 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:23:25" (1/3) ...
[2021-11-13 18:24:34,968 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110f0dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:24:34, skipping insertion in model container
[2021-11-13 18:24:34,969 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:47" (2/3) ...
[2021-11-13 18:24:34,969 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110f0dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:24:34, skipping insertion in model container
[2021-11-13 18:24:34,969 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:24:34" (3/3) ...
[2021-11-13 18:24:34,971 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label26.c
[2021-11-13 18:24:34,977 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:24:34,977 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:24:35,083 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:24:35,091 INFO  L339      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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 18:24:35,092 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:24:35,265 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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)
[2021-11-13 18:24:36,258 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10140
[2021-11-13 18:24:36,258 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-13 18:24:36,268 INFO  L514         BasicCegarLoop]: 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-11-13 18:24:36,272 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:24:36,280 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:24:36,289 INFO  L85        PathProgramCache]: Analyzing trace with hash -1338313007, now seen corresponding path program 1 times
[2021-11-13 18:24:36,299 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:24:36,299 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198868230]
[2021-11-13 18:24:36,305 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:24:36,306 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:24:39,057 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:25:07,361 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:25:07,362 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:25:07,362 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198868230]
[2021-11-13 18:25:07,363 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198868230] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:25:07,363 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:25:07,366 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:25:07,368 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637842651]
[2021-11-13 18:25:07,369 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:25:07,391 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:25:07,391 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:25:07,421 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:25:07,422 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:25:07,464 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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 4 states, 4 states have (on average 2534.75) internal successors, (10139), 3 states have internal predecessors, (10139), 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)
[2021-11-13 18:26:12,590 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:26:12,590 INFO  L93              Difference]: Finished difference Result 40898 states and 81470 transitions.
[2021-11-13 18:26:12,591 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-11-13 18:26:12,595 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2534.75) internal successors, (10139), 3 states have internal predecessors, (10139), 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 10139
[2021-11-13 18:26:12,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:26:12,839 INFO  L225             Difference]: With dead ends: 40898
[2021-11-13 18:26:12,839 INFO  L226             Difference]: Without dead ends: 30574
[2021-11-13 18:26:12,861 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:26:12,865 INFO  L933         BasicCegarLoop]: 5139 mSDtfsCounter, 22276 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 51972 mSolverCounterSat, 19081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52132.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22276 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 71053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 224.07ms SdHoareTripleChecker+Time, 19081 IncrementalHoareTripleChecker+Valid, 51972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63465.64ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:26:12,866 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [22276 Valid, 5256 Invalid, 71053 Unknown, 0 Unchecked, 224.07ms Time], IncrementalHoareTripleChecker [19081 Valid, 51972 Invalid, 0 Unknown, 0 Unchecked, 63465.64ms Time]
[2021-11-13 18:26:12,931 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30574 states.
[2021-11-13 18:26:13,714 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30574 to 30574.
[2021-11-13 18:26:13,769 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30574 states, 30573 states have (on average 1.496549242795931) internal successors, (45754), 30573 states have internal predecessors, (45754), 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)
[2021-11-13 18:26:13,868 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30574 states to 30574 states and 45754 transitions.
[2021-11-13 18:26:13,870 INFO  L78                 Accepts]: Start accepts. Automaton has 30574 states and 45754 transitions. Word has length 10139
[2021-11-13 18:26:13,889 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:26:13,890 INFO  L470      AbstractCegarLoop]: Abstraction has 30574 states and 45754 transitions.
[2021-11-13 18:26:13,893 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2534.75) internal successors, (10139), 3 states have internal predecessors, (10139), 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)
[2021-11-13 18:26:13,893 INFO  L276                IsEmpty]: Start isEmpty. Operand 30574 states and 45754 transitions.
[2021-11-13 18:26:15,460 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13039
[2021-11-13 18:26:15,461 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-13 18:26:15,475 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-11-13 18:26:15,476 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:26:15,477 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:26:15,477 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:26:15,482 INFO  L85        PathProgramCache]: Analyzing trace with hash 377012792, now seen corresponding path program 1 times
[2021-11-13 18:26:15,483 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:26:15,483 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063200648]
[2021-11-13 18:26:15,486 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:26:15,486 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:26:17,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat