./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/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 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:48:49,355 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:48:49,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:48:49,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:48:49,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:48:49,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:48:49,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:48:49,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:48:49,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:48:49,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:48:49,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:48:49,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:48:49,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:48:49,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:48:49,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:48:49,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:48:49,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:48:49,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:48:49,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:48:49,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:48:49,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:48:49,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:48:49,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:48:49,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:48:49,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:48:49,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:48:49,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:48:49,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:48:49,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:48:49,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:48:49,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:48:49,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:48:49,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:48:49,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:48:49,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:48:49,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:48:49,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:48:49,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:48:49,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:48:49,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:48:49,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:48:49,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 17:48:49,490 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:48:49,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:48:49,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:48:49,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:48:49,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:48:49,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:48:49,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:48:49,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:48:49,494 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:48:49,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:48:49,495 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 17:48:49,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 17:48:49,495 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 17:48:49,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:48:49,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:48:49,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:48:49,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:48:49,497 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 17:48:49,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:48:49,497 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:48:49,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:48:49,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:48:49,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:48:49,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:48:49,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:48:49,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:48:49,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:48:49,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:48:49,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 17:48:49,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 17:48:49,500 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:48:49,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:48:49,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:48:49,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:48:49,501 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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c
[2021-11-13 17:48:49,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:48:49,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:48:49,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:48:49,776 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:48:49,777 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:48:49,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c
[2021-11-13 17:48:49,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data/6deb9d409/ace32dfae87e4c3fbbcaf1338891ae63/FLAG850242f16
[2021-11-13 17:48:50,345 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:48:50,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c
[2021-11-13 17:48:50,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data/6deb9d409/ace32dfae87e4c3fbbcaf1338891ae63/FLAG850242f16
[2021-11-13 17:48:50,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data/6deb9d409/ace32dfae87e4c3fbbcaf1338891ae63
[2021-11-13 17:48:50,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:48:50,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:48:50,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:48:50,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:48:50,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:48:50,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:48:50" (1/1) ...
[2021-11-13 17:48:50,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139782dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:50, skipping insertion in model container
[2021-11-13 17:48:50,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:48:50" (1/1) ...
[2021-11-13 17:48:50,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:48:50,782 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:48:50,985 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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722]
[2021-11-13 17:48:51,012 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:48:51,022 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:48:51,036 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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722]
[2021-11-13 17:48:51,048 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:48:51,063 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:48:51,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51 WrapperNode
[2021-11-13 17:48:51,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:48:51,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:48:51,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:48:51,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:48:51,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:48:51,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:48:51,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:48:51,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:48:51,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:48:51,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:48:51,146 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:48:51,146 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:48:51,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (1/1) ...
[2021-11-13 17:48:51,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:48:51,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:48:51,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:48:51,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:48:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 17:48:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:48:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:48:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:48:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-13 17:48:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-13 17:48:51,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:48:51,537 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 17:48:51,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:48:51 BoogieIcfgContainer
[2021-11-13 17:48:51,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:48:51,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:48:51,542 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:48:51,551 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:48:51,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:48:50" (1/3) ...
[2021-11-13 17:48:51,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e71d3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:48:51, skipping insertion in model container
[2021-11-13 17:48:51,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:51" (2/3) ...
[2021-11-13 17:48:51,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e71d3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:48:51, skipping insertion in model container
[2021-11-13 17:48:51,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:48:51" (3/3) ...
[2021-11-13 17:48:51,555 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c
[2021-11-13 17:48:51,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:48:51,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:48:51,616 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:48:51,623 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 17:48:51,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:48:51,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-11-13 17:48:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:48:51,649 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:48:51,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:48:51,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:48:51,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:48:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times
[2021-11-13 17:48:51,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:48:51,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837991893]
[2021-11-13 17:48:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:51,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:48:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:51,837 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 17:48:51,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:48:51,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837991893]
[2021-11-13 17:48:51,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837991893] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:48:51,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:48:51,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 17:48:51,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339955587]
[2021-11-13 17:48:51,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:48:51,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 17:48:51,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:48:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 17:48:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:48:51,877 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:48:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:48:51,900 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions.
[2021-11-13 17:48:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 17:48:51,902 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2021-11-13 17:48:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:48:51,911 INFO L225 Difference]: With dead ends: 40
[2021-11-13 17:48:51,919 INFO L226 Difference]: Without dead ends: 17
[2021-11-13 17:48:51,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:48:51,928 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:48:51,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 17:48:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2021-11-13 17:48:51,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2021-11-13 17:48:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 17:48:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions.
[2021-11-13 17:48:51,977 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7
[2021-11-13 17:48:51,977 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:48:51,978 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions.
[2021-11-13 17:48:51,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:48:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions.
[2021-11-13 17:48:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-11-13 17:48:51,979 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:48:51,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:48:51,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 17:48:51,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:48:51,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:48:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times
[2021-11-13 17:48:51,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:48:51,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377994997]
[2021-11-13 17:48:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:51,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:48:52,005 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 17:48:52,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213175057]
[2021-11-13 17:48:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:52,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:48:52,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:48:52,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:48:52,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 17:48:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:52,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-13 17:48:52,091 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:48:52,202 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 17:48:52,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 17:48:52,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:48:52,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377994997]
[2021-11-13 17:48:52,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 17:48:52,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213175057]
[2021-11-13 17:48:52,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213175057] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:48:52,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:48:52,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 17:48:52,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462009060]
[2021-11-13 17:48:52,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:48:52,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 17:48:52,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:48:52,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 17:48:52,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:48:52,207 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:48:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:48:52,228 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions.
[2021-11-13 17:48:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 17:48:52,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2021-11-13 17:48:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:48:52,229 INFO L225 Difference]: With dead ends: 28
[2021-11-13 17:48:52,230 INFO L226 Difference]: Without dead ends: 19
[2021-11-13 17:48:52,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:48:52,232 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.76ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:48:52,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 9.76ms Time]
[2021-11-13 17:48:52,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2021-11-13 17:48:52,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2021-11-13 17:48:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 17:48:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions.
[2021-11-13 17:48:52,242 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8
[2021-11-13 17:48:52,242 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:48:52,242 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions.
[2021-11-13 17:48:52,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:48:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions.
[2021-11-13 17:48:52,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-11-13 17:48:52,244 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:48:52,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:48:52,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:48:52,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:48:52,470 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:48:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:48:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times
[2021-11-13 17:48:52,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:48:52,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029807439]
[2021-11-13 17:48:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:52,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:48:52,488 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 17:48:52,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509239126]
[2021-11-13 17:48:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:52,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:48:52,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:48:52,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:48:52,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 17:48:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:48:52,555 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 17:48:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:48:52,591 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-11-13 17:48:52,591 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 17:48:52,592 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 17:48:52,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:48:52,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:48:52,832 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2021-11-13 17:48:52,838 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 17:48:52,847 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.NullPointerException
at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230)
at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206)
at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132)
at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:155)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
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)
[2021-11-13 17:48:52,849 INFO L158 Benchmark]: Toolchain (without parser) took 2112.26ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 56.5MB in the beginning and 81.0MB in the end (delta: -24.5MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB.
[2021-11-13 17:48:52,850 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 63.1MB in the beginning and 63.1MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:48:52,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.72ms. Allocated memory is still 92.3MB. Free memory was 56.3MB in the beginning and 66.0MB in the end (delta: -9.7MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB.
[2021-11-13 17:48:52,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.34ms. Allocated memory is still 92.3MB. Free memory was 66.0MB in the beginning and 64.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:48:52,851 INFO L158 Benchmark]: Boogie Preprocessor took 37.99ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 63.4MB in the end (delta: 909.4kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:48:52,852 INFO L158 Benchmark]: RCFGBuilder took 394.24ms. Allocated memory is still 92.3MB. Free memory was 63.4MB in the beginning and 53.8MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 17:48:52,853 INFO L158 Benchmark]: TraceAbstraction took 1306.69ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 53.1MB in the beginning and 81.0MB in the end (delta: -27.9MB). Peak memory consumption was 550.8kB. Max. memory is 16.1GB.
[2021-11-13 17:48:52,856 INFO L339 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 92.3MB. Free memory was 63.1MB in the beginning and 63.1MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 326.72ms. Allocated memory is still 92.3MB. Free memory was 56.3MB in the beginning and 66.0MB in the end (delta: -9.7MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 40.34ms. Allocated memory is still 92.3MB. Free memory was 66.0MB in the beginning and 64.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 37.99ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 63.4MB in the end (delta: 909.4kB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 394.24ms. Allocated memory is still 92.3MB. Free memory was 63.4MB in the beginning and 53.8MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 1306.69ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 53.1MB in the beginning and 81.0MB in the end (delta: -27.9MB). Peak memory consumption was 550.8kB. 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
- ExceptionOrErrorResult: NullPointerException: null
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
[2021-11-13 17:48:52,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/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 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:48:55,510 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:48:55,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:48:55,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:48:55,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:48:55,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:48:55,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:48:55,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:48:55,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:48:55,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:48:55,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:48:55,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:48:55,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:48:55,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:48:55,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:48:55,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:48:55,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:48:55,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:48:55,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:48:55,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:48:55,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:48:55,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:48:55,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:48:55,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:48:55,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:48:55,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:48:55,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:48:55,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:48:55,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:48:55,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:48:55,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:48:55,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:48:55,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:48:55,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:48:55,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:48:55,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:48:55,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:48:55,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:48:55,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:48:55,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:48:55,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:48:55,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2021-11-13 17:48:55,712 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:48:55,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:48:55,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:48:55,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:48:55,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:48:55,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:48:55,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:48:55,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:48:55,718 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:48:55,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:48:55,720 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 17:48:55,720 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 17:48:55,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:48:55,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:48:55,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:48:55,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:48:55,722 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2021-11-13 17:48:55,722 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2021-11-13 17:48:55,723 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 17:48:55,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:48:55,723 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:48:55,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:48:55,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:48:55,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:48:55,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:48:55,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:48:55,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:48:55,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:48:55,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:48:55,726 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2021-11-13 17:48:55,727 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2021-11-13 17:48:55,727 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:48:55,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:48:55,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:48:55,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:48:55,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2021-11-13 17:48:55,729 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c
[2021-11-13 17:48:56,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:48:56,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:48:56,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:48:56,188 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:48:56,189 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:48:56,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c
[2021-11-13 17:48:56,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data/5ef73a79e/43f43bc8d78e438fb2c4e5fb1a7c66b7/FLAGbf2d6c665
[2021-11-13 17:48:56,856 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:48:56,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c
[2021-11-13 17:48:56,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data/5ef73a79e/43f43bc8d78e438fb2c4e5fb1a7c66b7/FLAGbf2d6c665
[2021-11-13 17:48:57,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/data/5ef73a79e/43f43bc8d78e438fb2c4e5fb1a7c66b7
[2021-11-13 17:48:57,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:48:57,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:48:57,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:48:57,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:48:57,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:48:57,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f55a77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57, skipping insertion in model container
[2021-11-13 17:48:57,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:48:57,296 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:48:57,492 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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722]
[2021-11-13 17:48:57,518 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:48:57,532 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:48:57,559 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_f96f09cf-3002-4528-b7a4-0cd597ec09a7/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722]
[2021-11-13 17:48:57,572 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:48:57,604 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:48:57,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57 WrapperNode
[2021-11-13 17:48:57,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:48:57,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:48:57,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:48:57,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:48:57,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:48:57,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:48:57,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:48:57,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:48:57,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:48:57,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:48:57,708 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:48:57,708 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:48:57,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (1/1) ...
[2021-11-13 17:48:57,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:48:57,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:48:57,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:48:57,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:48:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2021-11-13 17:48:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:48:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:48:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:48:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-13 17:48:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-13 17:49:00,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:49:00,469 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 17:49:00,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:49:00 BoogieIcfgContainer
[2021-11-13 17:49:00,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:49:00,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:49:00,474 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:49:00,478 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:49:00,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:48:57" (1/3) ...
[2021-11-13 17:49:00,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dee02e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:49:00, skipping insertion in model container
[2021-11-13 17:49:00,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:57" (2/3) ...
[2021-11-13 17:49:00,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dee02e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:49:00, skipping insertion in model container
[2021-11-13 17:49:00,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:49:00" (3/3) ...
[2021-11-13 17:49:00,482 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c
[2021-11-13 17:49:00,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:49:00,488 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:49:00,539 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:49:00,548 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 17:49:00,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:49:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-11-13 17:49:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:49:00,572 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:49:00,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:49:00,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:49:00,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:49:00,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times
[2021-11-13 17:49:00,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:49:00,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248095966]
[2021-11-13 17:49:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:49:00,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:49:00,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:49:00,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:49:00,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2021-11-13 17:49:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:49:00,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core
[2021-11-13 17:49:00,808 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:49:00,885 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 17:49:00,885 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:49:00,928 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 17:49:00,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:49:00,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248095966]
[2021-11-13 17:49:00,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248095966] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:49:00,931 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:49:00,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2021-11-13 17:49:00,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496424266]
[2021-11-13 17:49:00,935 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 17:49:00,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 17:49:00,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:49:00,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 17:49:00,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:49:00,979 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:49:01,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:49:01,008 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions.
[2021-11-13 17:49:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 17:49:01,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2021-11-13 17:49:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:49:01,020 INFO L225 Difference]: With dead ends: 40
[2021-11-13 17:49:01,021 INFO L226 Difference]: Without dead ends: 17
[2021-11-13 17:49:01,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:49:01,030 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:49:01,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 17:49:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2021-11-13 17:49:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2021-11-13 17:49:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 17:49:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions.
[2021-11-13 17:49:01,081 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7
[2021-11-13 17:49:01,081 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:49:01,081 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions.
[2021-11-13 17:49:01,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:49:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions.
[2021-11-13 17:49:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-11-13 17:49:01,083 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:49:01,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:49:01,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:49:01,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:49:01,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:49:01,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:49:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times
[2021-11-13 17:49:01,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:49:01,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194457215]
[2021-11-13 17:49:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:49:01,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:49:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:49:01,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:49:01,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2021-11-13 17:49:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:49:01,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-13 17:49:01,548 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:49:01,662 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 17:49:01,662 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:49:01,758 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 17:49:01,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:49:01,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194457215]
[2021-11-13 17:49:01,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194457215] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:49:01,759 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:49:01,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5
[2021-11-13 17:49:01,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738244573]
[2021-11-13 17:49:01,760 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 17:49:01,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:49:01,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:49:01,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:49:01,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:49:01,763 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:49:05,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:07,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:09,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:12,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:13,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:15,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:18,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:20,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:49:20,586 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions.
[2021-11-13 17:49:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:49:20,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2021-11-13 17:49:20,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:49:20,588 INFO L225 Difference]: With dead ends: 43
[2021-11-13 17:49:20,588 INFO L226 Difference]: Without dead ends: 34
[2021-11-13 17:49:20,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:49:20,591 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18215.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18771.41ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:49:20,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 76 Invalid, 24 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 7 Unknown, 0 Unchecked, 18771.41ms Time]
[2021-11-13 17:49:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2021-11-13 17:49:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32.
[2021-11-13 17:49:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2021-11-13 17:49:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions.
[2021-11-13 17:49:20,611 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 8
[2021-11-13 17:49:20,611 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:49:20,612 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions.
[2021-11-13 17:49:20,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:49:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions.
[2021-11-13 17:49:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-11-13 17:49:20,613 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:49:20,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:49:20,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:49:20,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:49:20,830 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:49:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:49:20,831 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times
[2021-11-13 17:49:20,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:49:20,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052630540]
[2021-11-13 17:49:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:49:20,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:49:20,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:49:20,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:49:20,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2021-11-13 17:49:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:49:21,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 17:49:21,030 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:49:21,466 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 17:49:21,467 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:49:33,569 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 17:49:33,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:49:33,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052630540]
[2021-11-13 17:49:33,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052630540] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:49:33,570 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:49:33,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9
[2021-11-13 17:49:33,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113479679]
[2021-11-13 17:49:33,571 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 17:49:33,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-11-13 17:49:33,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:49:33,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-11-13 17:49:33,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2021-11-13 17:49:33,573 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:49:34,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:36,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:39,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:43,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:45,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:47,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:50,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:52,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:55,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:57,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:49:59,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:50:02,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:50:04,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:50:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:50:04,977 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions.
[2021-11-13 17:50:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-13 17:50:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2021-11-13 17:50:05,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:50:05,092 INFO L225 Difference]: With dead ends: 44
[2021-11-13 17:50:05,092 INFO L226 Difference]: Without dead ends: 42
[2021-11-13 17:50:05,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-11-13 17:50:05,095 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28291.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28767.14ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:50:05,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 123 Invalid, 43 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 10 Unknown, 0 Unchecked, 28767.14ms Time]
[2021-11-13 17:50:05,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2021-11-13 17:50:05,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40.
[2021-11-13 17:50:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2021-11-13 17:50:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions.
[2021-11-13 17:50:05,109 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 8
[2021-11-13 17:50:05,109 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:50:05,109 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions.
[2021-11-13 17:50:05,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:50:05,110 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions.
[2021-11-13 17:50:05,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 17:50:05,110 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:50:05,110 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:50:05,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2021-11-13 17:50:05,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:50:05,326 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:50:05,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:50:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1242689983, now seen corresponding path program 1 times
[2021-11-13 17:50:05,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:50:05,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779379243]
[2021-11-13 17:50:05,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:50:05,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:50:05,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:50:05,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:50:05,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2021-11-13 17:50:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:50:06,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 17:50:06,396 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:50:08,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:50:08,920 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:50:16,351 WARN L860 $PredicateComparison]: unable to prove that (= (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvneg (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (_ bv6 32)) |c_ULTIMATE.start_main_~r~0#1|)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from true
[2021-11-13 17:50:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:50:41,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:50:41,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779379243]
[2021-11-13 17:50:41,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779379243] provided 1 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:50:41,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 17:50:41,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10
[2021-11-13 17:50:41,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949596083]
[2021-11-13 17:50:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:50:41,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:50:41,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:50:41,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:50:41,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=57, Unknown=1, NotChecked=14, Total=90
[2021-11-13 17:50:41,802 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:50:45,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:50:46,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:50:49,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:50:51,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:50:53,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:50:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:50:53,602 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions.
[2021-11-13 17:50:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 17:50:53,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2021-11-13 17:50:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:50:53,731 INFO L225 Difference]: With dead ends: 42
[2021-11-13 17:50:53,731 INFO L226 Difference]: Without dead ends: 40
[2021-11-13 17:50:53,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=22, Invalid=71, Unknown=1, NotChecked=16, Total=110
[2021-11-13 17:50:53,733 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10582.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 10857.75ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:50:53,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 79 Invalid, 55 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 4 Unknown, 43 Unchecked, 10857.75ms Time]
[2021-11-13 17:50:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2021-11-13 17:50:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2021-11-13 17:50:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2021-11-13 17:50:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions.
[2021-11-13 17:50:53,754 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 13
[2021-11-13 17:50:53,755 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:50:53,755 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions.
[2021-11-13 17:50:53,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:50:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions.
[2021-11-13 17:50:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-11-13 17:50:53,757 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:50:53,757 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:50:53,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2021-11-13 17:50:53,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:50:53,960 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:50:53,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:50:53,960 INFO L85 PathProgramCache]: Analyzing trace with hash 892115231, now seen corresponding path program 1 times
[2021-11-13 17:50:53,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:50:53,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832781712]
[2021-11-13 17:50:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:50:53,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:50:53,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:50:53,962 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:50:53,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2021-11-13 17:50:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:50:55,653 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 17:50:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:50:57,452 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2021-11-13 17:50:57,453 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 17:50:57,454 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 17:50:57,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0
[2021-11-13 17:50:57,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:50:57,660 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2021-11-13 17:50:57,681 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 17:50:57,714 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.NullPointerException
at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230)
at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206)
at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155)
at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:155)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
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)
[2021-11-13 17:50:57,719 INFO L158 Benchmark]: Toolchain (without parser) took 120462.15ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 49.6MB in the beginning and 46.8MB in the end (delta: 2.7MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB.
[2021-11-13 17:50:57,719 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 48.8MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:50:57,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.06ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 50.3MB in the end (delta: -835.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-11-13 17:50:57,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.86ms. Allocated memory is still 67.1MB. Free memory was 50.3MB in the beginning and 48.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:50:57,725 INFO L158 Benchmark]: Boogie Preprocessor took 47.45ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 47.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:50:57,726 INFO L158 Benchmark]: RCFGBuilder took 2768.61ms. Allocated memory is still 67.1MB. Free memory was 47.1MB in the beginning and 36.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 17:50:57,726 INFO L158 Benchmark]: TraceAbstraction took 117243.96ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 35.9MB in the beginning and 46.8MB in the end (delta: -10.9MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB.
[2021-11-13 17:50:57,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.34ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 48.8MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 345.06ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 50.3MB in the end (delta: -835.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 47.86ms. Allocated memory is still 67.1MB. Free memory was 50.3MB in the beginning and 48.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 47.45ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 47.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 2768.61ms. Allocated memory is still 67.1MB. Free memory was 47.1MB in the beginning and 36.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 117243.96ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 35.9MB in the beginning and 46.8MB in the end (delta: -10.9MB). Peak memory consumption was 6.8MB. 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
- ExceptionOrErrorResult: NullPointerException: null
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
[2021-11-13 17:50:57,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96f09cf-3002-4528-b7a4-0cd597ec09a7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
ERROR: ExceptionOrErrorResult: NullPointerException: null