./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.02.cil.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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.02.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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 2cbfaf31aa56f767af01fea9a12ccb47d60ab19076d72b85e8ca46d6ff778e4c
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:55:29,363 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:55:29,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:55:29,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:55:29,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:55:29,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:55:29,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:55:29,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:55:29,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:55:29,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:55:29,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:55:29,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:55:29,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:55:29,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:55:29,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:55:29,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:55:29,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:55:29,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:55:29,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:55:29,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:55:29,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:55:29,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:55:29,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:55:29,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:55:29,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:55:29,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:55:29,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:55:29,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:55:29,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:55:29,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:55:29,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:55:29,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:55:29,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:55:29,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:55:29,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:55:29,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:55:29,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:55:29,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:55:29,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:55:29,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:55:29,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:55:29,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 18:55:29,551 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:55:29,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:55:29,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:55:29,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:55:29,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:55:29,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:55:29,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:55:29,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:55:29,561 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:55:29,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:55:29,562 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:55:29,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:55:29,563 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:55:29,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:55:29,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:55:29,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:55:29,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:55:29,564 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:55:29,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:55:29,564 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:55:29,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:55:29,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:55:29,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:55:29,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:55:29,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:55:29,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:55:29,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:55:29,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:55:29,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:55:29,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:55:29,569 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:55:29,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:55:29,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:55:29,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:55:29,570 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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cbfaf31aa56f767af01fea9a12ccb47d60ab19076d72b85e8ca46d6ff778e4c
[2021-11-13 18:55:29,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:55:29,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:55:29,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:55:29,939 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:55:29,941 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:55:29,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/systemc/transmitter.02.cil.c
[2021-11-13 18:55:30,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data/31e59fc27/6c9579387d8c49ce83b645df2b04f102/FLAG1cb0ea0c9
[2021-11-13 18:55:30,586 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:55:30,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/sv-benchmarks/c/systemc/transmitter.02.cil.c
[2021-11-13 18:55:30,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data/31e59fc27/6c9579387d8c49ce83b645df2b04f102/FLAG1cb0ea0c9
[2021-11-13 18:55:30,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data/31e59fc27/6c9579387d8c49ce83b645df2b04f102
[2021-11-13 18:55:30,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:55:30,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:55:30,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:55:30,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:55:30,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:55:30,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:55:30" (1/1) ...
[2021-11-13 18:55:30,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5fba27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:30, skipping insertion in model container
[2021-11-13 18:55:30,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:55:30" (1/1) ...
[2021-11-13 18:55:30,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:55:31,005 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:55:31,167 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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/sv-benchmarks/c/systemc/transmitter.02.cil.c[706,719]
[2021-11-13 18:55:31,216 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:55:31,225 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:55:31,235 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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/sv-benchmarks/c/systemc/transmitter.02.cil.c[706,719]
[2021-11-13 18:55:31,264 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:55:31,280 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:55:31,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31 WrapperNode
[2021-11-13 18:55:31,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:55:31,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:55:31,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:55:31,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:55:31,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:55:31,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:55:31,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:55:31,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:55:31,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:55:31,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:55:31,406 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:55:31,406 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:55:31,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (1/1) ...
[2021-11-13 18:55:31,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:55:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:55:31,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:55:31,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:55:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:55:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events
[2021-11-13 18:55:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events
[2021-11-13 18:55:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads
[2021-11-13 18:55:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads
[2021-11-13 18:55:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify
[2021-11-13 18:55:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify
[2021-11-13 18:55:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread
[2021-11-13 18:55:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread
[2021-11-13 18:55:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events
[2021-11-13 18:55:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events
[2021-11-13 18:55:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 18:55:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels
[2021-11-13 18:55:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels
[2021-11-13 18:55:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:55:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:55:32,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:55:32,004 INFO L299 CfgBuilder]: Removed 6 assume(true) statements.
[2021-11-13 18:55:32,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:55:32 BoogieIcfgContainer
[2021-11-13 18:55:32,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:55:32,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:55:32,009 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:55:32,013 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:55:32,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:55:30" (1/3) ...
[2021-11-13 18:55:32,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533ed61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:55:32, skipping insertion in model container
[2021-11-13 18:55:32,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:55:31" (2/3) ...
[2021-11-13 18:55:32,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533ed61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:55:32, skipping insertion in model container
[2021-11-13 18:55:32,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:55:32" (3/3) ...
[2021-11-13 18:55:32,016 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c
[2021-11-13 18:55:32,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:55:32,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:55:32,074 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:55:32,082 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 18:55:32,082 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:55:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 105 states have (on average 1.561904761904762) internal successors, (164), 107 states have internal predecessors, (164), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2021-11-13 18:55:32,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:55:32,114 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:32,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:32,115 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2055872345, now seen corresponding path program 1 times
[2021-11-13 18:55:32,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:32,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939357587]
[2021-11-13 18:55:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:32,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:32,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:32,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:32,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:32,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:32,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939357587]
[2021-11-13 18:55:32,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939357587] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:32,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:32,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:55:32,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786022898]
[2021-11-13 18:55:32,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:32,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:55:32,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:32,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:55:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:55:32,446 INFO L87 Difference]: Start difference. First operand has 128 states, 105 states have (on average 1.561904761904762) internal successors, (164), 107 states have internal predecessors, (164), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:33,035 INFO L93 Difference]: Finished difference Result 277 states and 425 transitions.
[2021-11-13 18:55:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:55:33,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67
[2021-11-13 18:55:33,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:33,051 INFO L225 Difference]: With dead ends: 277
[2021-11-13 18:55:33,052 INFO L226 Difference]: Without dead ends: 153
[2021-11-13 18:55:33,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:55:33,060 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 268 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.78ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 352.39ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:33,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 334 Invalid, 204 Unknown, 0 Unchecked, 25.78ms Time], IncrementalHoareTripleChecker [38 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 352.39ms Time]
[2021-11-13 18:55:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2021-11-13 18:55:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123.
[2021-11-13 18:55:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.4356435643564356) internal successors, (145), 102 states have internal predecessors, (145), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2021-11-13 18:55:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 175 transitions.
[2021-11-13 18:55:33,161 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 175 transitions. Word has length 67
[2021-11-13 18:55:33,161 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:33,162 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 175 transitions.
[2021-11-13 18:55:33,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:33,162 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 175 transitions.
[2021-11-13 18:55:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:55:33,170 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:33,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:33,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:55:33,172 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:33,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:33,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1622143259, now seen corresponding path program 1 times
[2021-11-13 18:55:33,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:33,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103362843]
[2021-11-13 18:55:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:33,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:33,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:33,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103362843]
[2021-11-13 18:55:33,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103362843] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:33,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:33,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 18:55:33,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409613712]
[2021-11-13 18:55:33,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:33,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 18:55:33,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 18:55:33,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:33,456 INFO L87 Difference]: Start difference. First operand 123 states and 175 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:33,919 INFO L93 Difference]: Finished difference Result 265 states and 386 transitions.
[2021-11-13 18:55:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:55:33,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67
[2021-11-13 18:55:33,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:33,928 INFO L225 Difference]: With dead ends: 265
[2021-11-13 18:55:33,928 INFO L226 Difference]: Without dead ends: 152
[2021-11-13 18:55:33,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72
[2021-11-13 18:55:33,932 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 258 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 282.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.08ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 351.13ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:33,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 373 Invalid, 374 Unknown, 0 Unchecked, 11.08ms Time], IncrementalHoareTripleChecker [44 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 351.13ms Time]
[2021-11-13 18:55:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2021-11-13 18:55:33,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 123.
[2021-11-13 18:55:33,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 102 states have internal predecessors, (144), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2021-11-13 18:55:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 174 transitions.
[2021-11-13 18:55:33,961 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 174 transitions. Word has length 67
[2021-11-13 18:55:33,962 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:33,962 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 174 transitions.
[2021-11-13 18:55:33,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:33,963 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 174 transitions.
[2021-11-13 18:55:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:55:33,964 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:33,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:33,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 18:55:33,965 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:33,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1286038627, now seen corresponding path program 1 times
[2021-11-13 18:55:33,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:33,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138492929]
[2021-11-13 18:55:33,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:33,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:34,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:34,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138492929]
[2021-11-13 18:55:34,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138492929] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:34,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:34,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:34,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339191318]
[2021-11-13 18:55:34,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:34,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:34,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:34,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:34,182 INFO L87 Difference]: Start difference. First operand 123 states and 174 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:34,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:34,597 INFO L93 Difference]: Finished difference Result 269 states and 391 transitions.
[2021-11-13 18:55:34,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 18:55:34,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67
[2021-11-13 18:55:34,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:34,606 INFO L225 Difference]: With dead ends: 269
[2021-11-13 18:55:34,606 INFO L226 Difference]: Without dead ends: 156
[2021-11-13 18:55:34,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2021-11-13 18:55:34,617 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 313 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 260.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.82ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 311.72ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:34,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 385 Invalid, 401 Unknown, 0 Unchecked, 9.82ms Time], IncrementalHoareTripleChecker [63 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 311.72ms Time]
[2021-11-13 18:55:34,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states.
[2021-11-13 18:55:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 123.
[2021-11-13 18:55:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.4158415841584158) internal successors, (143), 102 states have internal predecessors, (143), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2021-11-13 18:55:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 173 transitions.
[2021-11-13 18:55:34,648 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 173 transitions. Word has length 67
[2021-11-13 18:55:34,649 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:34,649 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 173 transitions.
[2021-11-13 18:55:34,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:34,649 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 173 transitions.
[2021-11-13 18:55:34,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:55:34,658 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:34,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:34,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-13 18:55:34,659 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:34,660 INFO L85 PathProgramCache]: Analyzing trace with hash -410019621, now seen corresponding path program 1 times
[2021-11-13 18:55:34,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:34,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364574316]
[2021-11-13 18:55:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:34,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:34,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:34,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364574316]
[2021-11-13 18:55:34,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364574316] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:34,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:34,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:34,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431692367]
[2021-11-13 18:55:34,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:34,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:34,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:34,772 INFO L87 Difference]: Start difference. First operand 123 states and 173 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:35,185 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions.
[2021-11-13 18:55:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 18:55:35,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67
[2021-11-13 18:55:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:35,188 INFO L225 Difference]: With dead ends: 267
[2021-11-13 18:55:35,188 INFO L226 Difference]: Without dead ends: 154
[2021-11-13 18:55:35,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2021-11-13 18:55:35,191 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 266 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.50ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 308.24ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:35,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 444 Invalid, 423 Unknown, 0 Unchecked, 10.50ms Time], IncrementalHoareTripleChecker [51 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 308.24ms Time]
[2021-11-13 18:55:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states.
[2021-11-13 18:55:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 123.
[2021-11-13 18:55:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 102 states have internal predecessors, (142), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2021-11-13 18:55:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 172 transitions.
[2021-11-13 18:55:35,210 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 172 transitions. Word has length 67
[2021-11-13 18:55:35,211 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:35,211 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 172 transitions.
[2021-11-13 18:55:35,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 172 transitions.
[2021-11-13 18:55:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:55:35,213 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:35,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:35,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-13 18:55:35,214 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash 33881053, now seen corresponding path program 1 times
[2021-11-13 18:55:35,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:35,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252344212]
[2021-11-13 18:55:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:35,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:35,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:35,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252344212]
[2021-11-13 18:55:35,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252344212] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:35,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:35,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:35,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998429847]
[2021-11-13 18:55:35,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:35,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:35,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:35,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:35,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:35,304 INFO L87 Difference]: Start difference. First operand 123 states and 172 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:35,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:35,647 INFO L93 Difference]: Finished difference Result 265 states and 379 transitions.
[2021-11-13 18:55:35,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 18:55:35,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67
[2021-11-13 18:55:35,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:35,650 INFO L225 Difference]: With dead ends: 265
[2021-11-13 18:55:35,650 INFO L226 Difference]: Without dead ends: 152
[2021-11-13 18:55:35,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2021-11-13 18:55:35,658 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 308 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.72ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 260.57ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:35,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 372 Invalid, 374 Unknown, 0 Unchecked, 6.72ms Time], IncrementalHoareTripleChecker [68 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 260.57ms Time]
[2021-11-13 18:55:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2021-11-13 18:55:35,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 123.
[2021-11-13 18:55:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.396039603960396) internal successors, (141), 102 states have internal predecessors, (141), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2021-11-13 18:55:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 171 transitions.
[2021-11-13 18:55:35,682 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 171 transitions. Word has length 67
[2021-11-13 18:55:35,683 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:35,683 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 171 transitions.
[2021-11-13 18:55:35,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 171 transitions.
[2021-11-13 18:55:35,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:55:35,684 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:35,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:35,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-13 18:55:35,685 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1994705057, now seen corresponding path program 1 times
[2021-11-13 18:55:35,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:35,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145079267]
[2021-11-13 18:55:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:35,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:35,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:35,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145079267]
[2021-11-13 18:55:35,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145079267] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:35,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:35,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 18:55:35,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589281467]
[2021-11-13 18:55:35,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:35,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 18:55:35,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:35,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 18:55:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:35,774 INFO L87 Difference]: Start difference. First operand 123 states and 171 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:36,443 INFO L93 Difference]: Finished difference Result 397 states and 563 transitions.
[2021-11-13 18:55:36,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 18:55:36,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67
[2021-11-13 18:55:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:36,447 INFO L225 Difference]: With dead ends: 397
[2021-11-13 18:55:36,447 INFO L226 Difference]: Without dead ends: 285
[2021-11-13 18:55:36,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2021-11-13 18:55:36,449 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 476 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 432.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.93ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 530.15ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:36,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 696 Invalid, 611 Unknown, 0 Unchecked, 10.93ms Time], IncrementalHoareTripleChecker [71 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 530.15ms Time]
[2021-11-13 18:55:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states.
[2021-11-13 18:55:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 225.
[2021-11-13 18:55:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 186 states have (on average 1.39247311827957) internal successors, (259), 188 states have internal predecessors, (259), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2021-11-13 18:55:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 311 transitions.
[2021-11-13 18:55:36,478 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 311 transitions. Word has length 67
[2021-11-13 18:55:36,478 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:36,478 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 311 transitions.
[2021-11-13 18:55:36,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 311 transitions.
[2021-11-13 18:55:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:55:36,484 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:36,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:36,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-13 18:55:36,484 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash 992257470, now seen corresponding path program 1 times
[2021-11-13 18:55:36,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:36,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051276071]
[2021-11-13 18:55:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:36,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:36,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:36,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:36,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:36,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051276071]
[2021-11-13 18:55:36,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051276071] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:36,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:36,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:36,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787931893]
[2021-11-13 18:55:36,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:36,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:36,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:36,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:36,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:36,634 INFO L87 Difference]: Start difference. First operand 225 states and 311 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:37,192 INFO L93 Difference]: Finished difference Result 523 states and 746 transitions.
[2021-11-13 18:55:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-11-13 18:55:37,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67
[2021-11-13 18:55:37,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:37,196 INFO L225 Difference]: With dead ends: 523
[2021-11-13 18:55:37,196 INFO L226 Difference]: Without dead ends: 309
[2021-11-13 18:55:37,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182
[2021-11-13 18:55:37,198 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 247 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 307.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.82ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 365.57ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:37,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 651 Invalid, 462 Unknown, 0 Unchecked, 7.82ms Time], IncrementalHoareTripleChecker [34 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 365.57ms Time]
[2021-11-13 18:55:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states.
[2021-11-13 18:55:37,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 228.
[2021-11-13 18:55:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 189 states have (on average 1.380952380952381) internal successors, (261), 191 states have internal predecessors, (261), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2021-11-13 18:55:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 313 transitions.
[2021-11-13 18:55:37,225 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 313 transitions. Word has length 67
[2021-11-13 18:55:37,225 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:37,225 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 313 transitions.
[2021-11-13 18:55:37,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 313 transitions.
[2021-11-13 18:55:37,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:55:37,227 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:37,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:37,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-11-13 18:55:37,227 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1240403964, now seen corresponding path program 1 times
[2021-11-13 18:55:37,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:37,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664400293]
[2021-11-13 18:55:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:37,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:37,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:37,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664400293]
[2021-11-13 18:55:37,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664400293] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:37,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:37,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:37,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443437620]
[2021-11-13 18:55:37,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:37,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:37,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:37,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:37,324 INFO L87 Difference]: Start difference. First operand 228 states and 313 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:37,873 INFO L93 Difference]: Finished difference Result 541 states and 773 transitions.
[2021-11-13 18:55:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-11-13 18:55:37,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67
[2021-11-13 18:55:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:37,878 INFO L225 Difference]: With dead ends: 541
[2021-11-13 18:55:37,878 INFO L226 Difference]: Without dead ends: 324
[2021-11-13 18:55:37,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240
[2021-11-13 18:55:37,880 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 247 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 272.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.71ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 329.59ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:37,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 643 Invalid, 426 Unknown, 0 Unchecked, 7.71ms Time], IncrementalHoareTripleChecker [36 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 329.59ms Time]
[2021-11-13 18:55:37,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states.
[2021-11-13 18:55:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 234.
[2021-11-13 18:55:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 195 states have (on average 1.3692307692307693) internal successors, (267), 197 states have internal predecessors, (267), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2021-11-13 18:55:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 319 transitions.
[2021-11-13 18:55:37,935 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 319 transitions. Word has length 67
[2021-11-13 18:55:37,936 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:37,937 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 319 transitions.
[2021-11-13 18:55:37,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 319 transitions.
[2021-11-13 18:55:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:55:37,942 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:37,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:37,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-13 18:55:37,943 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:37,943 INFO L85 PathProgramCache]: Analyzing trace with hash 846037178, now seen corresponding path program 1 times
[2021-11-13 18:55:37,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:37,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124527170]
[2021-11-13 18:55:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:37,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:37,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:38,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:38,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124527170]
[2021-11-13 18:55:38,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124527170] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:38,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:38,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:38,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128956983]
[2021-11-13 18:55:38,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:38,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:38,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:38,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:38,074 INFO L87 Difference]: Start difference. First operand 234 states and 319 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:39,267 INFO L93 Difference]: Finished difference Result 886 states and 1260 transitions.
[2021-11-13 18:55:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-11-13 18:55:39,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67
[2021-11-13 18:55:39,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:39,276 INFO L225 Difference]: With dead ends: 886
[2021-11-13 18:55:39,276 INFO L226 Difference]: Without dead ends: 663
[2021-11-13 18:55:39,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306
[2021-11-13 18:55:39,282 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 919 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 744.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.32ms SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 898.06ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:39,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 793 Invalid, 926 Unknown, 0 Unchecked, 15.32ms Time], IncrementalHoareTripleChecker [198 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 898.06ms Time]
[2021-11-13 18:55:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states.
[2021-11-13 18:55:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 438.
[2021-11-13 18:55:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 366 states have (on average 1.3688524590163935) internal successors, (501), 369 states have internal predecessors, (501), 47 states have call successors, (47), 24 states have call predecessors, (47), 24 states have return successors, (51), 45 states have call predecessors, (51), 47 states have call successors, (51)
[2021-11-13 18:55:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 599 transitions.
[2021-11-13 18:55:39,349 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 599 transitions. Word has length 67
[2021-11-13 18:55:39,349 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:39,349 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 599 transitions.
[2021-11-13 18:55:39,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 599 transitions.
[2021-11-13 18:55:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2021-11-13 18:55:39,351 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:39,351 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:39,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-13 18:55:39,352 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:39,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:39,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1815470317, now seen corresponding path program 1 times
[2021-11-13 18:55:39,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:39,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323082480]
[2021-11-13 18:55:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:39,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:39,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:39,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:39,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2021-11-13 18:55:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-11-13 18:55:39,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:39,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323082480]
[2021-11-13 18:55:39,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323082480] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:39,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:39,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:39,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838154583]
[2021-11-13 18:55:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:39,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:39,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:39,467 INFO L87 Difference]: Start difference. First operand 438 states and 599 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:39,999 INFO L93 Difference]: Finished difference Result 990 states and 1411 transitions.
[2021-11-13 18:55:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-11-13 18:55:40,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 84
[2021-11-13 18:55:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:40,005 INFO L225 Difference]: With dead ends: 990
[2021-11-13 18:55:40,005 INFO L226 Difference]: Without dead ends: 563
[2021-11-13 18:55:40,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240
[2021-11-13 18:55:40,008 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 163 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 252.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.29ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 306.91ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:40,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 645 Invalid, 402 Unknown, 0 Unchecked, 5.29ms Time], IncrementalHoareTripleChecker [34 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 306.91ms Time]
[2021-11-13 18:55:40,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states.
[2021-11-13 18:55:40,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 447.
[2021-11-13 18:55:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 375 states have (on average 1.3573333333333333) internal successors, (509), 378 states have internal predecessors, (509), 47 states have call successors, (47), 24 states have call predecessors, (47), 24 states have return successors, (51), 45 states have call predecessors, (51), 47 states have call successors, (51)
[2021-11-13 18:55:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 607 transitions.
[2021-11-13 18:55:40,071 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 607 transitions. Word has length 84
[2021-11-13 18:55:40,071 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:40,071 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 607 transitions.
[2021-11-13 18:55:40,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 607 transitions.
[2021-11-13 18:55:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2021-11-13 18:55:40,073 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:40,073 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:40,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-11-13 18:55:40,074 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:40,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1462381935, now seen corresponding path program 1 times
[2021-11-13 18:55:40,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:40,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602395404]
[2021-11-13 18:55:40,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:40,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2021-11-13 18:55:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-11-13 18:55:40,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:40,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602395404]
[2021-11-13 18:55:40,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602395404] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:40,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:40,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:40,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117466411]
[2021-11-13 18:55:40,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:40,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:40,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:40,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:40,154 INFO L87 Difference]: Start difference. First operand 447 states and 607 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:40,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:40,617 INFO L93 Difference]: Finished difference Result 1127 states and 1518 transitions.
[2021-11-13 18:55:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 18:55:40,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 84
[2021-11-13 18:55:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:40,623 INFO L225 Difference]: With dead ends: 1127
[2021-11-13 18:55:40,623 INFO L226 Difference]: Without dead ends: 692
[2021-11-13 18:55:40,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2021-11-13 18:55:40,626 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 483 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.19ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 292.08ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:40,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 416 Invalid, 424 Unknown, 0 Unchecked, 5.19ms Time], IncrementalHoareTripleChecker [65 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 292.08ms Time]
[2021-11-13 18:55:40,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states.
[2021-11-13 18:55:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 554.
[2021-11-13 18:55:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 478 states have (on average 1.3179916317991631) internal successors, (630), 480 states have internal predecessors, (630), 47 states have call successors, (47), 28 states have call predecessors, (47), 28 states have return successors, (52), 46 states have call predecessors, (52), 47 states have call successors, (52)
[2021-11-13 18:55:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 729 transitions.
[2021-11-13 18:55:40,715 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 729 transitions. Word has length 84
[2021-11-13 18:55:40,716 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:40,716 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 729 transitions.
[2021-11-13 18:55:40,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 729 transitions.
[2021-11-13 18:55:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2021-11-13 18:55:40,717 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:40,718 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:40,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2021-11-13 18:55:40,718 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:40,719 INFO L85 PathProgramCache]: Analyzing trace with hash 564988657, now seen corresponding path program 1 times
[2021-11-13 18:55:40,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:40,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876414189]
[2021-11-13 18:55:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:40,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2021-11-13 18:55:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-11-13 18:55:40,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:40,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876414189]
[2021-11-13 18:55:40,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876414189] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:40,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:40,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:40,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584186180]
[2021-11-13 18:55:40,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:40,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:40,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:40,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:40,852 INFO L87 Difference]: Start difference. First operand 554 states and 729 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:41,219 INFO L93 Difference]: Finished difference Result 1230 states and 1623 transitions.
[2021-11-13 18:55:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:55:41,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 84
[2021-11-13 18:55:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:41,224 INFO L225 Difference]: With dead ends: 1230
[2021-11-13 18:55:41,225 INFO L226 Difference]: Without dead ends: 688
[2021-11-13 18:55:41,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:55:41,229 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 300 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 197.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.62ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:41,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 415 Invalid, 327 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [45 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 238.62ms Time]
[2021-11-13 18:55:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states.
[2021-11-13 18:55:41,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 554.
[2021-11-13 18:55:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 478 states have (on average 1.301255230125523) internal successors, (622), 480 states have internal predecessors, (622), 47 states have call successors, (47), 28 states have call predecessors, (47), 28 states have return successors, (52), 46 states have call predecessors, (52), 47 states have call successors, (52)
[2021-11-13 18:55:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 721 transitions.
[2021-11-13 18:55:41,298 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 721 transitions. Word has length 84
[2021-11-13 18:55:41,298 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:41,298 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 721 transitions.
[2021-11-13 18:55:41,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 721 transitions.
[2021-11-13 18:55:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2021-11-13 18:55:41,300 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:41,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:41,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2021-11-13 18:55:41,301 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash 813135151, now seen corresponding path program 1 times
[2021-11-13 18:55:41,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:41,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621211781]
[2021-11-13 18:55:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:41,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2021-11-13 18:55:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-11-13 18:55:41,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:41,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621211781]
[2021-11-13 18:55:41,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621211781] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:41,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:41,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:41,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861955722]
[2021-11-13 18:55:41,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:41,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:41,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:41,420 INFO L87 Difference]: Start difference. First operand 554 states and 721 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:41,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:41,803 INFO L93 Difference]: Finished difference Result 1226 states and 1599 transitions.
[2021-11-13 18:55:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:55:41,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 84
[2021-11-13 18:55:41,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:41,809 INFO L225 Difference]: With dead ends: 1226
[2021-11-13 18:55:41,809 INFO L226 Difference]: Without dead ends: 684
[2021-11-13 18:55:41,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:55:41,812 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 297 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 208.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.40ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.44ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:41,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 407 Invalid, 319 Unknown, 0 Unchecked, 4.40ms Time], IncrementalHoareTripleChecker [48 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 249.44ms Time]
[2021-11-13 18:55:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states.
[2021-11-13 18:55:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 554.
[2021-11-13 18:55:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 478 states have (on average 1.284518828451883) internal successors, (614), 480 states have internal predecessors, (614), 47 states have call successors, (47), 28 states have call predecessors, (47), 28 states have return successors, (52), 46 states have call predecessors, (52), 47 states have call successors, (52)
[2021-11-13 18:55:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 713 transitions.
[2021-11-13 18:55:41,881 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 713 transitions. Word has length 84
[2021-11-13 18:55:41,882 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:41,882 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 713 transitions.
[2021-11-13 18:55:41,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 713 transitions.
[2021-11-13 18:55:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2021-11-13 18:55:41,884 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:41,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:41,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2021-11-13 18:55:41,885 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:41,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1236781873, now seen corresponding path program 1 times
[2021-11-13 18:55:41,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:41,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59726639]
[2021-11-13 18:55:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:41,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2021-11-13 18:55:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-11-13 18:55:41,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:41,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59726639]
[2021-11-13 18:55:41,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59726639] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:41,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:41,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:41,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579669281]
[2021-11-13 18:55:41,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:41,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:41,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:41,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:41,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:41,975 INFO L87 Difference]: Start difference. First operand 554 states and 713 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:42,498 INFO L93 Difference]: Finished difference Result 1389 states and 1788 transitions.
[2021-11-13 18:55:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 18:55:42,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 84
[2021-11-13 18:55:42,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:42,506 INFO L225 Difference]: With dead ends: 1389
[2021-11-13 18:55:42,506 INFO L226 Difference]: Without dead ends: 847
[2021-11-13 18:55:42,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2021-11-13 18:55:42,509 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 358 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 275.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.95ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 325.19ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:42,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 421 Invalid, 376 Unknown, 0 Unchecked, 4.95ms Time], IncrementalHoareTripleChecker [67 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 325.19ms Time]
[2021-11-13 18:55:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states.
[2021-11-13 18:55:42,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 654.
[2021-11-13 18:55:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 568 states have (on average 1.2429577464788732) internal successors, (706), 570 states have internal predecessors, (706), 50 states have call successors, (50), 35 states have call predecessors, (50), 35 states have return successors, (62), 49 states have call predecessors, (62), 50 states have call successors, (62)
[2021-11-13 18:55:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 818 transitions.
[2021-11-13 18:55:42,589 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 818 transitions. Word has length 84
[2021-11-13 18:55:42,590 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:42,590 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 818 transitions.
[2021-11-13 18:55:42,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:55:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 818 transitions.
[2021-11-13 18:55:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2021-11-13 18:55:42,592 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:42,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:42,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2021-11-13 18:55:42,593 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:42,593 INFO L85 PathProgramCache]: Analyzing trace with hash -608585293, now seen corresponding path program 1 times
[2021-11-13 18:55:42,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:42,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825523478]
[2021-11-13 18:55:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:42,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:42,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:42,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2021-11-13 18:55:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:55:42,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:42,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825523478]
[2021-11-13 18:55:42,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825523478] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:55:42,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259671291]
[2021-11-13 18:55:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:42,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:55:42,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:55:42,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:55:42,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 18:55:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:42,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:55:42,793 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:55:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:43,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:55:43,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259671291] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:43,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:55:43,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2021-11-13 18:55:43,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040981349]
[2021-11-13 18:55:43,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:43,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:55:43,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:43,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:55:43,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:43,053 INFO L87 Difference]: Start difference. First operand 654 states and 818 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2021-11-13 18:55:43,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:43,212 INFO L93 Difference]: Finished difference Result 1613 states and 2040 transitions.
[2021-11-13 18:55:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:55:43,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 84
[2021-11-13 18:55:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:43,221 INFO L225 Difference]: With dead ends: 1613
[2021-11-13 18:55:43,221 INFO L226 Difference]: Without dead ends: 1123
[2021-11-13 18:55:43,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:43,224 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 121 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.49ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:43,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 410 Invalid, 11 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 13.49ms Time]
[2021-11-13 18:55:43,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states.
[2021-11-13 18:55:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123.
[2021-11-13 18:55:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 977 states have (on average 1.2364380757420677) internal successors, (1208), 979 states have internal predecessors, (1208), 84 states have call successors, (84), 61 states have call predecessors, (84), 61 states have return successors, (116), 83 states have call predecessors, (116), 84 states have call successors, (116)
[2021-11-13 18:55:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1408 transitions.
[2021-11-13 18:55:43,363 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1408 transitions. Word has length 84
[2021-11-13 18:55:43,363 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:43,364 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1408 transitions.
[2021-11-13 18:55:43,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2021-11-13 18:55:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1408 transitions.
[2021-11-13 18:55:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2021-11-13 18:55:43,366 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:43,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:43,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2021-11-13 18:55:43,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2021-11-13 18:55:43,582 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:43,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:43,583 INFO L85 PathProgramCache]: Analyzing trace with hash -55730782, now seen corresponding path program 1 times
[2021-11-13 18:55:43,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:43,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743171801]
[2021-11-13 18:55:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:43,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:43,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2021-11-13 18:55:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:43,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-11-13 18:55:43,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:43,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743171801]
[2021-11-13 18:55:43,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743171801] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:43,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:43,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:55:43,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581356385]
[2021-11-13 18:55:43,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:43,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:55:43,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:55:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:43,755 INFO L87 Difference]: Start difference. First operand 1123 states and 1408 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2021-11-13 18:55:44,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:44,447 INFO L93 Difference]: Finished difference Result 3486 states and 4372 transitions.
[2021-11-13 18:55:44,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 18:55:44,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 99
[2021-11-13 18:55:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:44,462 INFO L225 Difference]: With dead ends: 3486
[2021-11-13 18:55:44,463 INFO L226 Difference]: Without dead ends: 2375
[2021-11-13 18:55:44,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156
[2021-11-13 18:55:44,467 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 595 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 275.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.09ms SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 325.82ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:44,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 461 Invalid, 441 Unknown, 0 Unchecked, 6.09ms Time], IncrementalHoareTripleChecker [149 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 325.82ms Time]
[2021-11-13 18:55:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states.
[2021-11-13 18:55:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2136.
[2021-11-13 18:55:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 1849 states have (on average 1.2201189832341806) internal successors, (2256), 1870 states have internal predecessors, (2256), 153 states have call successors, (153), 108 states have call predecessors, (153), 133 states have return successors, (265), 159 states have call predecessors, (265), 153 states have call successors, (265)
[2021-11-13 18:55:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 2674 transitions.
[2021-11-13 18:55:44,773 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 2674 transitions. Word has length 99
[2021-11-13 18:55:44,773 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:44,773 INFO L470 AbstractCegarLoop]: Abstraction has 2136 states and 2674 transitions.
[2021-11-13 18:55:44,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2021-11-13 18:55:44,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 2674 transitions.
[2021-11-13 18:55:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2021-11-13 18:55:44,777 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:44,777 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:44,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2021-11-13 18:55:44,778 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:44,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:44,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1996312796, now seen corresponding path program 1 times
[2021-11-13 18:55:44,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:44,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104835035]
[2021-11-13 18:55:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:44,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:44,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:44,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2021-11-13 18:55:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-11-13 18:55:44,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:44,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104835035]
[2021-11-13 18:55:44,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104835035] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:44,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:44,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:55:44,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462904363]
[2021-11-13 18:55:44,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:44,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:55:44,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:44,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:55:44,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:55:44,859 INFO L87 Difference]: Start difference. First operand 2136 states and 2674 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2021-11-13 18:55:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:45,371 INFO L93 Difference]: Finished difference Result 4575 states and 5687 transitions.
[2021-11-13 18:55:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:55:45,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 99
[2021-11-13 18:55:45,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:45,391 INFO L225 Difference]: With dead ends: 4575
[2021-11-13 18:55:45,391 INFO L226 Difference]: Without dead ends: 2450
[2021-11-13 18:55:45,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:55:45,398 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 297 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 159.08ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:45,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 262 Invalid, 156 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [39 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 159.08ms Time]
[2021-11-13 18:55:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states.
[2021-11-13 18:55:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2131.
[2021-11-13 18:55:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2131 states, 1847 states have (on average 1.2198159177043855) internal successors, (2253), 1867 states have internal predecessors, (2253), 150 states have call successors, (150), 108 states have call predecessors, (150), 133 states have return successors, (261), 156 states have call predecessors, (261), 150 states have call successors, (261)
[2021-11-13 18:55:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 2664 transitions.
[2021-11-13 18:55:45,641 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 2664 transitions. Word has length 99
[2021-11-13 18:55:45,641 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:45,641 INFO L470 AbstractCegarLoop]: Abstraction has 2131 states and 2664 transitions.
[2021-11-13 18:55:45,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2021-11-13 18:55:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 2664 transitions.
[2021-11-13 18:55:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2021-11-13 18:55:45,645 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:45,645 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:45,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2021-11-13 18:55:45,646 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:45,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:45,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1243137275, now seen corresponding path program 1 times
[2021-11-13 18:55:45,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:45,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942362637]
[2021-11-13 18:55:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:45,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:45,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:45,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2021-11-13 18:55:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-11-13 18:55:45,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:45,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942362637]
[2021-11-13 18:55:45,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942362637] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:45,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:45,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:55:45,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106224948]
[2021-11-13 18:55:45,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:45,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:55:45,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:45,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:55:45,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:55:45,767 INFO L87 Difference]: Start difference. First operand 2131 states and 2664 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:55:46,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:46,521 INFO L93 Difference]: Finished difference Result 4973 states and 6237 transitions.
[2021-11-13 18:55:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:55:46,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 100
[2021-11-13 18:55:46,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:46,542 INFO L225 Difference]: With dead ends: 4973
[2021-11-13 18:55:46,542 INFO L226 Difference]: Without dead ends: 3137
[2021-11-13 18:55:46,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2021-11-13 18:55:46,549 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 381 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 227.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.90ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 300.63ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:46,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 360 Invalid, 267 Unknown, 0 Unchecked, 4.90ms Time], IncrementalHoareTripleChecker [64 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 300.63ms Time]
[2021-11-13 18:55:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states.
[2021-11-13 18:55:46,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 2700.
[2021-11-13 18:55:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2341 states have (on average 1.215719777872704) internal successors, (2846), 2363 states have internal predecessors, (2846), 190 states have call successors, (190), 138 states have call predecessors, (190), 168 states have return successors, (324), 199 states have call predecessors, (324), 190 states have call successors, (324)
[2021-11-13 18:55:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3360 transitions.
[2021-11-13 18:55:46,871 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3360 transitions. Word has length 100
[2021-11-13 18:55:46,871 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:46,871 INFO L470 AbstractCegarLoop]: Abstraction has 2700 states and 3360 transitions.
[2021-11-13 18:55:46,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:55:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3360 transitions.
[2021-11-13 18:55:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118
[2021-11-13 18:55:46,876 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:46,876 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:46,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2021-11-13 18:55:46,877 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:46,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1869458483, now seen corresponding path program 1 times
[2021-11-13 18:55:46,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:46,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543502455]
[2021-11-13 18:55:46,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:46,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:46,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:46,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2021-11-13 18:55:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2021-11-13 18:55:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-11-13 18:55:47,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:47,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543502455]
[2021-11-13 18:55:47,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543502455] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:55:47,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361236897]
[2021-11-13 18:55:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:47,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:55:47,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:55:47,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:55:47,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 18:55:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:47,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:55:47,102 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:55:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:55:47,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:55:47,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361236897] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:47,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:55:47,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7
[2021-11-13 18:55:47,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507041571]
[2021-11-13 18:55:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:47,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:55:47,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:55:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:47,397 INFO L87 Difference]: Start difference. First operand 2700 states and 3360 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:55:47,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:47,756 INFO L93 Difference]: Finished difference Result 6076 states and 7553 transitions.
[2021-11-13 18:55:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:55:47,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 117
[2021-11-13 18:55:47,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:47,779 INFO L225 Difference]: With dead ends: 6076
[2021-11-13 18:55:47,780 INFO L226 Difference]: Without dead ends: 3387
[2021-11-13 18:55:47,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:47,789 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 71 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.26ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:47,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 341 Invalid, 12 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 9.26ms Time]
[2021-11-13 18:55:47,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states.
[2021-11-13 18:55:48,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 3369.
[2021-11-13 18:55:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 2914 states have (on average 1.2055593685655457) internal successors, (3513), 2936 states have internal predecessors, (3513), 246 states have call successors, (246), 178 states have call predecessors, (246), 208 states have return successors, (386), 255 states have call predecessors, (386), 246 states have call successors, (386)
[2021-11-13 18:55:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4145 transitions.
[2021-11-13 18:55:48,175 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4145 transitions. Word has length 117
[2021-11-13 18:55:48,176 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:48,176 INFO L470 AbstractCegarLoop]: Abstraction has 3369 states and 4145 transitions.
[2021-11-13 18:55:48,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:55:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4145 transitions.
[2021-11-13 18:55:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2021-11-13 18:55:48,182 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:48,183 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:48,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:55:48,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:55:48,411 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:48,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:48,411 INFO L85 PathProgramCache]: Analyzing trace with hash -36607372, now seen corresponding path program 1 times
[2021-11-13 18:55:48,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:48,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583481711]
[2021-11-13 18:55:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:48,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2021-11-13 18:55:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2021-11-13 18:55:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:55:48,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:48,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583481711]
[2021-11-13 18:55:48,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583481711] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:55:48,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396041498]
[2021-11-13 18:55:48,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:48,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:55:48,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:55:48,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:55:48,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 18:55:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:48,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:55:48,593 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:55:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:55:48,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:55:48,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396041498] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:48,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:55:48,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2021-11-13 18:55:48,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433636347]
[2021-11-13 18:55:48,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:48,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:55:48,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:48,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:55:48,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:48,865 INFO L87 Difference]: Start difference. First operand 3369 states and 4145 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)
[2021-11-13 18:55:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:49,210 INFO L93 Difference]: Finished difference Result 6104 states and 7524 transitions.
[2021-11-13 18:55:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:55:49,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 121
[2021-11-13 18:55:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:49,242 INFO L225 Difference]: With dead ends: 6104
[2021-11-13 18:55:49,242 INFO L226 Difference]: Without dead ends: 3416
[2021-11-13 18:55:49,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:55:49,252 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 112 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.58ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:49,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 401 Invalid, 9 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 9.58ms Time]
[2021-11-13 18:55:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states.
[2021-11-13 18:55:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 3369.
[2021-11-13 18:55:49,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 2914 states have (on average 1.199382292381606) internal successors, (3495), 2936 states have internal predecessors, (3495), 246 states have call successors, (246), 178 states have call predecessors, (246), 208 states have return successors, (345), 255 states have call predecessors, (345), 246 states have call successors, (345)
[2021-11-13 18:55:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4086 transitions.
[2021-11-13 18:55:49,649 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4086 transitions. Word has length 121
[2021-11-13 18:55:49,650 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:49,650 INFO L470 AbstractCegarLoop]: Abstraction has 3369 states and 4086 transitions.
[2021-11-13 18:55:49,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)
[2021-11-13 18:55:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4086 transitions.
[2021-11-13 18:55:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2021-11-13 18:55:49,658 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:49,659 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:49,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:55:49,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:55:49,875 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1792814822, now seen corresponding path program 1 times
[2021-11-13 18:55:49,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:49,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451737501]
[2021-11-13 18:55:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:49,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2021-11-13 18:55:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2021-11-13 18:55:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2021-11-13 18:55:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 5 proven. 39 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2021-11-13 18:55:49,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:49,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451737501]
[2021-11-13 18:55:49,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451737501] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:55:49,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293305572]
[2021-11-13 18:55:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:49,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:55:49,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:55:49,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:55:50,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 18:55:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:50,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-13 18:55:50,080 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:55:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2021-11-13 18:55:50,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:55:50,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293305572] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:50,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:55:50,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6
[2021-11-13 18:55:50,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756907903]
[2021-11-13 18:55:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:50,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:55:50,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:55:50,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:50,343 INFO L87 Difference]: Start difference. First operand 3369 states and 4086 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 18:55:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:50,957 INFO L93 Difference]: Finished difference Result 9860 states and 12095 transitions.
[2021-11-13 18:55:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:55:50,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 153
[2021-11-13 18:55:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:51,003 INFO L225 Difference]: With dead ends: 9860
[2021-11-13 18:55:51,004 INFO L226 Difference]: Without dead ends: 6503
[2021-11-13 18:55:51,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:51,019 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 137 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.88ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:51,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 346 Invalid, 13 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 14.88ms Time]
[2021-11-13 18:55:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states.
[2021-11-13 18:55:51,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 6492.
[2021-11-13 18:55:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6492 states, 5638 states have (on average 1.1906704505143668) internal successors, (6713), 5674 states have internal predecessors, (6713), 459 states have call successors, (459), 340 states have call predecessors, (459), 394 states have return successors, (722), 479 states have call predecessors, (722), 459 states have call successors, (722)
[2021-11-13 18:55:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 7894 transitions.
[2021-11-13 18:55:51,706 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 7894 transitions. Word has length 153
[2021-11-13 18:55:51,707 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:51,707 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 7894 transitions.
[2021-11-13 18:55:51,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 18:55:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 7894 transitions.
[2021-11-13 18:55:51,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2021-11-13 18:55:51,719 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:51,719 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:51,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 18:55:51,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2021-11-13 18:55:51,934 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:51,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:51,935 INFO L85 PathProgramCache]: Analyzing trace with hash -970215938, now seen corresponding path program 1 times
[2021-11-13 18:55:51,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:51,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064440909]
[2021-11-13 18:55:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:51,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:51,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2021-11-13 18:55:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2021-11-13 18:55:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2021-11-13 18:55:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2021-11-13 18:55:52,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:52,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064440909]
[2021-11-13 18:55:52,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064440909] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:55:52,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285022608]
[2021-11-13 18:55:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:52,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:55:52,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:55:52,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:55:52,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 18:55:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:52,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-13 18:55:52,173 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:55:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-11-13 18:55:52,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:55:52,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285022608] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:52,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:55:52,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6
[2021-11-13 18:55:52,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914294717]
[2021-11-13 18:55:52,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:52,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:55:52,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:52,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:55:52,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:52,488 INFO L87 Difference]: Start difference. First operand 6492 states and 7894 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:55:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:53,110 INFO L93 Difference]: Finished difference Result 10644 states and 13205 transitions.
[2021-11-13 18:55:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:55:53,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 154
[2021-11-13 18:55:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:53,139 INFO L225 Difference]: With dead ends: 10644
[2021-11-13 18:55:53,139 INFO L226 Difference]: Without dead ends: 6468
[2021-11-13 18:55:53,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:53,152 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 111 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.97ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:53,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 438 Invalid, 8 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 7.97ms Time]
[2021-11-13 18:55:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states.
[2021-11-13 18:55:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 6446.
[2021-11-13 18:55:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6446 states, 5592 states have (on average 1.1686337625178826) internal successors, (6535), 5628 states have internal predecessors, (6535), 459 states have call successors, (459), 340 states have call predecessors, (459), 394 states have return successors, (722), 479 states have call predecessors, (722), 459 states have call successors, (722)
[2021-11-13 18:55:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6446 states to 6446 states and 7716 transitions.
[2021-11-13 18:55:53,848 INFO L78 Accepts]: Start accepts. Automaton has 6446 states and 7716 transitions. Word has length 154
[2021-11-13 18:55:53,849 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:53,849 INFO L470 AbstractCegarLoop]: Abstraction has 6446 states and 7716 transitions.
[2021-11-13 18:55:53,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:55:53,849 INFO L276 IsEmpty]: Start isEmpty. Operand 6446 states and 7716 transitions.
[2021-11-13 18:55:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2021-11-13 18:55:53,862 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:53,862 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:53,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-13 18:55:54,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:55:54,087 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:54,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1358937995, now seen corresponding path program 1 times
[2021-11-13 18:55:54,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:54,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531233769]
[2021-11-13 18:55:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:54,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2021-11-13 18:55:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2021-11-13 18:55:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2021-11-13 18:55:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2021-11-13 18:55:54,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:54,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531233769]
[2021-11-13 18:55:54,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531233769] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:54,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:54,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 18:55:54,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812563332]
[2021-11-13 18:55:54,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:54,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 18:55:54,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:54,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 18:55:54,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:54,199 INFO L87 Difference]: Start difference. First operand 6446 states and 7716 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2021-11-13 18:55:55,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:55,102 INFO L93 Difference]: Finished difference Result 9228 states and 11064 transitions.
[2021-11-13 18:55:55,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 18:55:55,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 155
[2021-11-13 18:55:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:55,120 INFO L225 Difference]: With dead ends: 9228
[2021-11-13 18:55:55,120 INFO L226 Difference]: Without dead ends: 4925
[2021-11-13 18:55:55,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2021-11-13 18:55:55,132 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 509 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.52ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 397.41ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:55,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 578 Invalid, 436 Unknown, 0 Unchecked, 5.52ms Time], IncrementalHoareTripleChecker [64 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 397.41ms Time]
[2021-11-13 18:55:55,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states.
[2021-11-13 18:55:55,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4454.
[2021-11-13 18:55:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 3883 states have (on average 1.161473087818697) internal successors, (4510), 3905 states have internal predecessors, (4510), 303 states have call successors, (303), 224 states have call predecessors, (303), 267 states have return successors, (448), 326 states have call predecessors, (448), 303 states have call successors, (448)
[2021-11-13 18:55:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 5261 transitions.
[2021-11-13 18:55:55,524 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 5261 transitions. Word has length 155
[2021-11-13 18:55:55,525 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:55,525 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 5261 transitions.
[2021-11-13 18:55:55,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2021-11-13 18:55:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 5261 transitions.
[2021-11-13 18:55:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2021-11-13 18:55:55,534 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:55,534 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:55,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2021-11-13 18:55:55,534 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash 217702764, now seen corresponding path program 1 times
[2021-11-13 18:55:55,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:55,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549225922]
[2021-11-13 18:55:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:55,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2021-11-13 18:55:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2021-11-13 18:55:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2021-11-13 18:55:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 37 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2021-11-13 18:55:55,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:55,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549225922]
[2021-11-13 18:55:55,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549225922] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:55:55,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173238693]
[2021-11-13 18:55:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:55,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:55:55,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:55:55,638 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:55:55,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-13 18:55:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:55,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-13 18:55:55,739 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:55:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-11-13 18:55:56,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:55:56,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173238693] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:56,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:55:56,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6
[2021-11-13 18:55:56,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165991595]
[2021-11-13 18:55:56,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:56,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:55:56,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:55:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:56,049 INFO L87 Difference]: Start difference. First operand 4454 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10)
[2021-11-13 18:55:56,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:56,398 INFO L93 Difference]: Finished difference Result 8019 states and 9613 transitions.
[2021-11-13 18:55:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:55:56,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 156
[2021-11-13 18:55:56,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:56,410 INFO L225 Difference]: With dead ends: 8019
[2021-11-13 18:55:56,410 INFO L226 Difference]: Without dead ends: 4470
[2021-11-13 18:55:56,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:56,420 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 82 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.86ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:56,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 378 Invalid, 10 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 17.86ms Time]
[2021-11-13 18:55:56,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states.
[2021-11-13 18:55:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4454.
[2021-11-13 18:55:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 3883 states have (on average 1.1382951326294102) internal successors, (4420), 3905 states have internal predecessors, (4420), 303 states have call successors, (303), 224 states have call predecessors, (303), 267 states have return successors, (448), 326 states have call predecessors, (448), 303 states have call successors, (448)
[2021-11-13 18:55:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 5171 transitions.
[2021-11-13 18:55:56,835 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 5171 transitions. Word has length 156
[2021-11-13 18:55:56,835 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:56,835 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 5171 transitions.
[2021-11-13 18:55:56,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10)
[2021-11-13 18:55:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 5171 transitions.
[2021-11-13 18:55:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2021-11-13 18:55:56,842 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:56,842 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:56,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-13 18:55:57,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2021-11-13 18:55:57,070 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:57,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:57,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1852604969, now seen corresponding path program 2 times
[2021-11-13 18:55:57,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:57,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200350947]
[2021-11-13 18:55:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:57,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2021-11-13 18:55:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-11-13 18:55:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-11-13 18:55:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2021-11-13 18:55:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2021-11-13 18:55:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2021-11-13 18:55:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2021-11-13 18:55:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2021-11-13 18:55:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:55:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:55:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2021-11-13 18:55:57,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:55:57,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200350947]
[2021-11-13 18:55:57,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200350947] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:55:57,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:55:57,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 18:55:57,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408215475]
[2021-11-13 18:55:57,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:55:57,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 18:55:57,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:55:57,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 18:55:57,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:55:57,185 INFO L87 Difference]: Start difference. First operand 4454 states and 5171 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2021-11-13 18:55:57,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:55:57,779 INFO L93 Difference]: Finished difference Result 7209 states and 8473 transitions.
[2021-11-13 18:55:57,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-13 18:55:57,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156
[2021-11-13 18:55:57,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:55:57,786 INFO L225 Difference]: With dead ends: 7209
[2021-11-13 18:55:57,786 INFO L226 Difference]: Without dead ends: 1669
[2021-11-13 18:55:57,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:55:57,797 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 348 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 199.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 239.79ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:55:57,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 331 Invalid, 292 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [46 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 239.79ms Time]
[2021-11-13 18:55:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states.
[2021-11-13 18:55:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1669.
[2021-11-13 18:55:57,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1446 states have (on average 1.0802213001383125) internal successors, (1562), 1445 states have internal predecessors, (1562), 127 states have call successors, (127), 92 states have call predecessors, (127), 95 states have return successors, (160), 133 states have call predecessors, (160), 127 states have call successors, (160)
[2021-11-13 18:55:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 1849 transitions.
[2021-11-13 18:55:57,960 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 1849 transitions. Word has length 156
[2021-11-13 18:55:57,960 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:55:57,960 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 1849 transitions.
[2021-11-13 18:55:57,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2021-11-13 18:55:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 1849 transitions.
[2021-11-13 18:55:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2021-11-13 18:55:57,964 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:55:57,964 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:57,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2021-11-13 18:55:57,965 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:55:57,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:55:57,965 INFO L85 PathProgramCache]: Analyzing trace with hash -217774742, now seen corresponding path program 1 times
[2021-11-13 18:55:57,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:55:57,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627702738]
[2021-11-13 18:55:57,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:55:57,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:55:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:55:57,984 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 18:55:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:55:58,072 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-11-13 18:55:58,073 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 18:55:58,073 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 18:55:58,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2021-11-13 18:55:58,082 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:55:58,086 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:55:58,141 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 18:55:58,149 INFO L158 Benchmark]: Toolchain (without parser) took 27221.27ms. Allocated memory was 121.6MB in the beginning and 807.4MB in the end (delta: 685.8MB). Free memory was 87.7MB in the beginning and 591.3MB in the end (delta: -503.6MB). Peak memory consumption was 182.4MB. Max. memory is 16.1GB.
[2021-11-13 18:55:58,150 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 86.0MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:55:58,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.69ms. Allocated memory is still 121.6MB. Free memory was 87.4MB in the beginning and 95.3MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:55:58,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.61ms. Allocated memory is still 121.6MB. Free memory was 95.3MB in the beginning and 93.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:55:58,150 INFO L158 Benchmark]: Boogie Preprocessor took 66.73ms. Allocated memory is still 121.6MB. Free memory was 93.3MB in the beginning and 91.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:55:58,151 INFO L158 Benchmark]: RCFGBuilder took 610.70ms. Allocated memory is still 121.6MB. Free memory was 91.2MB in the beginning and 74.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2021-11-13 18:55:58,151 INFO L158 Benchmark]: TraceAbstraction took 26138.94ms. Allocated memory was 121.6MB in the beginning and 807.4MB in the end (delta: 685.8MB). Free memory was 73.6MB in the beginning and 591.3MB in the end (delta: -517.7MB). Peak memory consumption was 170.7MB. Max. memory is 16.1GB.
[2021-11-13 18:55:58,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.35ms. Allocated memory is still 86.0MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 351.69ms. Allocated memory is still 121.6MB. Free memory was 87.4MB in the beginning and 95.3MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 46.61ms. Allocated memory is still 121.6MB. Free memory was 95.3MB in the beginning and 93.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 66.73ms. Allocated memory is still 121.6MB. Free memory was 93.3MB in the beginning and 91.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 610.70ms. Allocated memory is still 121.6MB. Free memory was 91.2MB in the beginning and 74.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 26138.94ms. Allocated memory was 121.6MB in the beginning and 807.4MB in the end (delta: 685.8MB). Free memory was 73.6MB in the beginning and 591.3MB in the end (delta: -517.7MB). Peak memory consumption was 170.7MB. 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 18:55:58,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.02.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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 2cbfaf31aa56f767af01fea9a12ccb47d60ab19076d72b85e8ca46d6ff778e4c
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:56:00,536 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:56:00,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:56:00,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:56:00,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:56:00,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:56:00,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:56:00,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:56:00,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:56:00,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:56:00,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:56:00,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:56:00,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:56:00,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:56:00,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:56:00,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:56:00,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:56:00,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:56:00,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:56:00,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:56:00,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:56:00,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:56:00,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:56:00,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:56:00,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:56:00,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:56:00,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:56:00,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:56:00,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:56:00,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:56:00,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:56:00,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:56:00,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:56:00,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:56:00,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:56:00,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:56:00,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:56:00,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:56:00,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:56:00,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:56:00,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:56:00,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2021-11-13 18:56:00,714 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:56:00,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:56:00,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:56:00,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:56:00,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:56:00,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:56:00,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:56:00,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:56:00,722 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:56:00,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:56:00,723 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:56:00,723 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:56:00,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:56:00,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:56:00,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:56:00,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:56:00,725 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2021-11-13 18:56:00,725 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2021-11-13 18:56:00,725 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:56:00,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:56:00,725 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:56:00,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:56:00,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:56:00,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:56:00,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:56:00,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:56:00,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:56:00,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:56:00,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:56:00,728 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2021-11-13 18:56:00,728 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2021-11-13 18:56:00,728 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:56:00,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:56:00,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:56:00,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:56:00,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2021-11-13 18:56:00,729 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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cbfaf31aa56f767af01fea9a12ccb47d60ab19076d72b85e8ca46d6ff778e4c
[2021-11-13 18:56:01,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:56:01,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:56:01,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:56:01,141 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:56:01,141 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:56:01,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/systemc/transmitter.02.cil.c
[2021-11-13 18:56:01,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data/800b618d0/2e7e74c690ab43458f4e56ce6dafc456/FLAGbf085ee3f
[2021-11-13 18:56:01,755 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:56:01,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/sv-benchmarks/c/systemc/transmitter.02.cil.c
[2021-11-13 18:56:01,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data/800b618d0/2e7e74c690ab43458f4e56ce6dafc456/FLAGbf085ee3f
[2021-11-13 18:56:02,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/data/800b618d0/2e7e74c690ab43458f4e56ce6dafc456
[2021-11-13 18:56:02,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:56:02,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:56:02,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:56:02,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:56:02,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:56:02,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@721c9d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02, skipping insertion in model container
[2021-11-13 18:56:02,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:56:02,148 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:56:02,265 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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/sv-benchmarks/c/systemc/transmitter.02.cil.c[706,719]
[2021-11-13 18:56:02,313 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:56:02,325 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:56:02,336 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_3761728f-43b0-4513-9cdf-bc1bd9f6c486/sv-benchmarks/c/systemc/transmitter.02.cil.c[706,719]
[2021-11-13 18:56:02,363 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:56:02,379 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:56:02,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02 WrapperNode
[2021-11-13 18:56:02,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:56:02,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:56:02,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:56:02,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:56:02,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:56:02,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:56:02,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:56:02,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:56:02,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:56:02,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:56:02,467 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:56:02,467 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:56:02,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (1/1) ...
[2021-11-13 18:56:02,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:56:02,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:56:02,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:02,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:56:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2021-11-13 18:56:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:56:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events
[2021-11-13 18:56:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events
[2021-11-13 18:56:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads
[2021-11-13 18:56:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads
[2021-11-13 18:56:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify
[2021-11-13 18:56:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify
[2021-11-13 18:56:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread
[2021-11-13 18:56:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread
[2021-11-13 18:56:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events
[2021-11-13 18:56:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events
[2021-11-13 18:56:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels
[2021-11-13 18:56:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels
[2021-11-13 18:56:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:56:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:56:03,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:56:03,124 INFO L299 CfgBuilder]: Removed 6 assume(true) statements.
[2021-11-13 18:56:03,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:56:03 BoogieIcfgContainer
[2021-11-13 18:56:03,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:56:03,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:56:03,134 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:56:03,137 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:56:03,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:56:02" (1/3) ...
[2021-11-13 18:56:03,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6640f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:56:03, skipping insertion in model container
[2021-11-13 18:56:03,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:56:02" (2/3) ...
[2021-11-13 18:56:03,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6640f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:56:03, skipping insertion in model container
[2021-11-13 18:56:03,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:56:03" (3/3) ...
[2021-11-13 18:56:03,141 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c
[2021-11-13 18:56:03,150 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:56:03,150 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:56:03,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:56:03,227 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 18:56:03,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:56:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 105 states have (on average 1.561904761904762) internal successors, (164), 107 states have internal predecessors, (164), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2021-11-13 18:56:03,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:56:03,257 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:03,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:03,258 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:03,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2055872345, now seen corresponding path program 1 times
[2021-11-13 18:56:03,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:03,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444891226]
[2021-11-13 18:56:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:03,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:03,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:03,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:03,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2021-11-13 18:56:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:03,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:03,466 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:03,726 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:03,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:03,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444891226]
[2021-11-13 18:56:03,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444891226] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:03,937 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:03,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2021-11-13 18:56:03,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028140795]
[2021-11-13 18:56:03,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:03,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:56:03,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:03,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:56:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:56:03,989 INFO L87 Difference]: Start difference. First operand has 128 states, 105 states have (on average 1.561904761904762) internal successors, (164), 107 states have internal predecessors, (164), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)
[2021-11-13 18:56:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:04,081 INFO L93 Difference]: Finished difference Result 247 states and 375 transitions.
[2021-11-13 18:56:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:56:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 67
[2021-11-13 18:56:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:04,095 INFO L225 Difference]: With dead ends: 247
[2021-11-13 18:56:04,095 INFO L226 Difference]: Without dead ends: 123
[2021-11-13 18:56:04,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:56:04,103 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 170 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.23ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:04,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 178 Invalid, 2 Unknown, 0 Unchecked, 9.70ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 8.23ms Time]
[2021-11-13 18:56:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2021-11-13 18:56:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123.
[2021-11-13 18:56:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.4356435643564356) internal successors, (145), 102 states have internal predecessors, (145), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2021-11-13 18:56:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 175 transitions.
[2021-11-13 18:56:04,183 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 175 transitions. Word has length 67
[2021-11-13 18:56:04,184 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:04,184 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 175 transitions.
[2021-11-13 18:56:04,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)
[2021-11-13 18:56:04,185 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 175 transitions.
[2021-11-13 18:56:04,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:56:04,189 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:04,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:04,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2021-11-13 18:56:04,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:04,401 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:04,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1622143259, now seen corresponding path program 1 times
[2021-11-13 18:56:04,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:04,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041995877]
[2021-11-13 18:56:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:04,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:04,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:04,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2021-11-13 18:56:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:04,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:56:04,501 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:04,671 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:04,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:04,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041995877]
[2021-11-13 18:56:04,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041995877] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:04,839 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:04,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7
[2021-11-13 18:56:04,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539987407]
[2021-11-13 18:56:04,840 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:04,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:56:04,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:04,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:56:04,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:56:04,849 INFO L87 Difference]: Start difference. First operand 123 states and 175 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:56:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:05,372 INFO L93 Difference]: Finished difference Result 349 states and 507 transitions.
[2021-11-13 18:56:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:56:05,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 67
[2021-11-13 18:56:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:05,379 INFO L225 Difference]: With dead ends: 349
[2021-11-13 18:56:05,379 INFO L226 Difference]: Without dead ends: 236
[2021-11-13 18:56:05,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2021-11-13 18:56:05,383 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 816 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 311.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.65ms SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 396.60ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:05,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 441 Invalid, 345 Unknown, 0 Unchecked, 15.65ms Time], IncrementalHoareTripleChecker [129 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 396.60ms Time]
[2021-11-13 18:56:05,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states.
[2021-11-13 18:56:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233.
[2021-11-13 18:56:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 194 states have (on average 1.4381443298969072) internal successors, (279), 196 states have internal predecessors, (279), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26)
[2021-11-13 18:56:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 330 transitions.
[2021-11-13 18:56:05,432 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 330 transitions. Word has length 67
[2021-11-13 18:56:05,433 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:05,433 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 330 transitions.
[2021-11-13 18:56:05,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:56:05,434 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 330 transitions.
[2021-11-13 18:56:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:56:05,443 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:05,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:05,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:05,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:05,654 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:05,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1762963514, now seen corresponding path program 1 times
[2021-11-13 18:56:05,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:05,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773121359]
[2021-11-13 18:56:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:05,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:05,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:05,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:05,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2021-11-13 18:56:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:05,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:56:05,728 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:05,887 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:06,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:06,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773121359]
[2021-11-13 18:56:06,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773121359] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:06,106 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:06,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7
[2021-11-13 18:56:06,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904446403]
[2021-11-13 18:56:06,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:06,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:56:06,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:06,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:56:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:56:06,109 INFO L87 Difference]: Start difference. First operand 233 states and 330 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:56:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:06,319 INFO L93 Difference]: Finished difference Result 456 states and 653 transitions.
[2021-11-13 18:56:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:56:06,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 67
[2021-11-13 18:56:06,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:06,328 INFO L225 Difference]: With dead ends: 456
[2021-11-13 18:56:06,328 INFO L226 Difference]: Without dead ends: 233
[2021-11-13 18:56:06,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:56:06,334 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 345 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.53ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:06,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 327 Invalid, 164 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [55 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 163.53ms Time]
[2021-11-13 18:56:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states.
[2021-11-13 18:56:06,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233.
[2021-11-13 18:56:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 194 states have (on average 1.402061855670103) internal successors, (272), 196 states have internal predecessors, (272), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26)
[2021-11-13 18:56:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 323 transitions.
[2021-11-13 18:56:06,390 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 323 transitions. Word has length 67
[2021-11-13 18:56:06,391 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:06,391 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 323 transitions.
[2021-11-13 18:56:06,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:56:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 323 transitions.
[2021-11-13 18:56:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:56:06,396 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:06,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:06,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:06,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:06,612 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1515436166, now seen corresponding path program 1 times
[2021-11-13 18:56:06,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:06,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027815911]
[2021-11-13 18:56:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:06,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:06,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:06,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:06,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2021-11-13 18:56:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:06,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:56:06,685 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:06,868 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:07,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:07,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027815911]
[2021-11-13 18:56:07,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027815911] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:07,066 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:07,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7
[2021-11-13 18:56:07,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189352811]
[2021-11-13 18:56:07,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:07,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:56:07,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:56:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:56:07,073 INFO L87 Difference]: Start difference. First operand 233 states and 323 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:56:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:07,274 INFO L93 Difference]: Finished difference Result 456 states and 639 transitions.
[2021-11-13 18:56:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:56:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 67
[2021-11-13 18:56:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:07,277 INFO L225 Difference]: With dead ends: 456
[2021-11-13 18:56:07,277 INFO L226 Difference]: Without dead ends: 233
[2021-11-13 18:56:07,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:56:07,279 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 336 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.77ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.04ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:07,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 320 Invalid, 164 Unknown, 0 Unchecked, 3.77ms Time], IncrementalHoareTripleChecker [55 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 161.04ms Time]
[2021-11-13 18:56:07,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states.
[2021-11-13 18:56:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233.
[2021-11-13 18:56:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 194 states have (on average 1.365979381443299) internal successors, (265), 196 states have internal predecessors, (265), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26)
[2021-11-13 18:56:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 316 transitions.
[2021-11-13 18:56:07,305 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 316 transitions. Word has length 67
[2021-11-13 18:56:07,305 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:07,305 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 316 transitions.
[2021-11-13 18:56:07,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:56:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 316 transitions.
[2021-11-13 18:56:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:56:07,307 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:07,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:07,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:07,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:07,517 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:07,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1205548998, now seen corresponding path program 1 times
[2021-11-13 18:56:07,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:07,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489254103]
[2021-11-13 18:56:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:07,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:07,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:07,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:07,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2021-11-13 18:56:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:07,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:56:07,600 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:07,753 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:07,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:07,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489254103]
[2021-11-13 18:56:07,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489254103] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:07,965 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:07,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7
[2021-11-13 18:56:07,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957370652]
[2021-11-13 18:56:07,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:07,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:56:07,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:07,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:56:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:56:07,967 INFO L87 Difference]: Start difference. First operand 233 states and 316 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:56:08,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:08,235 INFO L93 Difference]: Finished difference Result 508 states and 700 transitions.
[2021-11-13 18:56:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:56:08,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 67
[2021-11-13 18:56:08,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:08,238 INFO L225 Difference]: With dead ends: 508
[2021-11-13 18:56:08,238 INFO L226 Difference]: Without dead ends: 285
[2021-11-13 18:56:08,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2021-11-13 18:56:08,240 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 327 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.88ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 214.45ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:08,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 310 Invalid, 202 Unknown, 0 Unchecked, 3.88ms Time], IncrementalHoareTripleChecker [49 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 214.45ms Time]
[2021-11-13 18:56:08,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states.
[2021-11-13 18:56:08,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285.
[2021-11-13 18:56:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 240 states have (on average 1.3291666666666666) internal successors, (319), 242 states have internal predecessors, (319), 27 states have call successors, (27), 16 states have call predecessors, (27), 17 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28)
[2021-11-13 18:56:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 374 transitions.
[2021-11-13 18:56:08,269 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 374 transitions. Word has length 67
[2021-11-13 18:56:08,270 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:08,270 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 374 transitions.
[2021-11-13 18:56:08,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)
[2021-11-13 18:56:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 374 transitions.
[2021-11-13 18:56:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:56:08,281 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:08,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:08,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:08,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:08,492 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:08,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash -348963367, now seen corresponding path program 1 times
[2021-11-13 18:56:08,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:08,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658280218]
[2021-11-13 18:56:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:08,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:08,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:08,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:08,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2021-11-13 18:56:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:08,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:56:08,573 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:08,711 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:08,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:08,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658280218]
[2021-11-13 18:56:08,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658280218] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:08,868 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:08,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5
[2021-11-13 18:56:08,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875911633]
[2021-11-13 18:56:08,868 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:08,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:56:08,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:08,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:56:08,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:56:08,870 INFO L87 Difference]: Start difference. First operand 285 states and 374 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:56:08,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:08,931 INFO L93 Difference]: Finished difference Result 629 states and 842 transitions.
[2021-11-13 18:56:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:56:08,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67
[2021-11-13 18:56:08,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:08,935 INFO L225 Difference]: With dead ends: 629
[2021-11-13 18:56:08,935 INFO L226 Difference]: Without dead ends: 355
[2021-11-13 18:56:08,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:56:08,937 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 90 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.56ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:08,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 695 Invalid, 14 Unknown, 0 Unchecked, 2.46ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 10.56ms Time]
[2021-11-13 18:56:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states.
[2021-11-13 18:56:08,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 291.
[2021-11-13 18:56:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 246 states have (on average 1.3130081300813008) internal successors, (323), 248 states have internal predecessors, (323), 27 states have call successors, (27), 16 states have call predecessors, (27), 17 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28)
[2021-11-13 18:56:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 378 transitions.
[2021-11-13 18:56:08,975 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 378 transitions. Word has length 67
[2021-11-13 18:56:08,975 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:08,975 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 378 transitions.
[2021-11-13 18:56:08,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:56:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 378 transitions.
[2021-11-13 18:56:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:56:08,977 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:08,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:08,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:09,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:09,188 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:09,189 INFO L85 PathProgramCache]: Analyzing trace with hash -100816873, now seen corresponding path program 1 times
[2021-11-13 18:56:09,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:09,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619746148]
[2021-11-13 18:56:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:09,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:09,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:09,190 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:09,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2021-11-13 18:56:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:09,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:56:09,254 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:09,358 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:09,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:09,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619746148]
[2021-11-13 18:56:09,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619746148] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:09,486 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:09,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5
[2021-11-13 18:56:09,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061802057]
[2021-11-13 18:56:09,486 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:09,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:56:09,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:09,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:56:09,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:56:09,488 INFO L87 Difference]: Start difference. First operand 291 states and 378 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:56:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:09,554 INFO L93 Difference]: Finished difference Result 655 states and 868 transitions.
[2021-11-13 18:56:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:56:09,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67
[2021-11-13 18:56:09,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:09,558 INFO L225 Difference]: With dead ends: 655
[2021-11-13 18:56:09,559 INFO L226 Difference]: Without dead ends: 375
[2021-11-13 18:56:09,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:56:09,560 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 50 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.09ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:09,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 667 Invalid, 14 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 11.09ms Time]
[2021-11-13 18:56:09,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states.
[2021-11-13 18:56:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 303.
[2021-11-13 18:56:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 258 states have (on average 1.2984496124031009) internal successors, (335), 260 states have internal predecessors, (335), 27 states have call successors, (27), 16 states have call predecessors, (27), 17 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28)
[2021-11-13 18:56:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 390 transitions.
[2021-11-13 18:56:09,594 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 390 transitions. Word has length 67
[2021-11-13 18:56:09,595 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:09,595 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 390 transitions.
[2021-11-13 18:56:09,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:56:09,595 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 390 transitions.
[2021-11-13 18:56:09,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:56:09,596 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:09,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:09,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:09,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:09,815 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:09,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -495183659, now seen corresponding path program 1 times
[2021-11-13 18:56:09,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:09,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644281196]
[2021-11-13 18:56:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:09,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:09,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:09,818 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:09,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2021-11-13 18:56:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:09,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:56:09,880 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:10,003 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:10,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:10,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644281196]
[2021-11-13 18:56:10,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644281196] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:10,107 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:10,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5
[2021-11-13 18:56:10,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885699796]
[2021-11-13 18:56:10,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:10,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:56:10,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:56:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:56:10,109 INFO L87 Difference]: Start difference. First operand 303 states and 390 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:56:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:10,172 INFO L93 Difference]: Finished difference Result 609 states and 792 transitions.
[2021-11-13 18:56:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:56:10,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67
[2021-11-13 18:56:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:10,178 INFO L225 Difference]: With dead ends: 609
[2021-11-13 18:56:10,179 INFO L226 Difference]: Without dead ends: 317
[2021-11-13 18:56:10,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:56:10,180 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 10 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.65ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:10,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 655 Invalid, 14 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 11.65ms Time]
[2021-11-13 18:56:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states.
[2021-11-13 18:56:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 309.
[2021-11-13 18:56:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 264 states have (on average 1.2840909090909092) internal successors, (339), 266 states have internal predecessors, (339), 27 states have call successors, (27), 16 states have call predecessors, (27), 17 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28)
[2021-11-13 18:56:10,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 394 transitions.
[2021-11-13 18:56:10,221 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 394 transitions. Word has length 67
[2021-11-13 18:56:10,221 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:10,222 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 394 transitions.
[2021-11-13 18:56:10,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-11-13 18:56:10,222 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 394 transitions.
[2021-11-13 18:56:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-13 18:56:10,223 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:10,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:10,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:10,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:10,437 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:10,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash -472551405, now seen corresponding path program 1 times
[2021-11-13 18:56:10,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:10,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885950267]
[2021-11-13 18:56:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:10,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:10,441 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:10,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2021-11-13 18:56:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:10,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:56:10,508 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:10,671 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:10,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:10,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885950267]
[2021-11-13 18:56:10,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885950267] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:10,902 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:10,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5
[2021-11-13 18:56:10,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464660919]
[2021-11-13 18:56:10,903 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:10,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:56:10,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:56:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:56:10,904 INFO L87 Difference]: Start difference. First operand 309 states and 394 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 18:56:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:11,153 INFO L93 Difference]: Finished difference Result 927 states and 1186 transitions.
[2021-11-13 18:56:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:56:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67
[2021-11-13 18:56:11,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:11,158 INFO L225 Difference]: With dead ends: 927
[2021-11-13 18:56:11,158 INFO L226 Difference]: Without dead ends: 630
[2021-11-13 18:56:11,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:56:11,160 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 272 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 143.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.87ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 171.82ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:11,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 382 Invalid, 167 Unknown, 0 Unchecked, 3.87ms Time], IncrementalHoareTripleChecker [64 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 171.82ms Time]
[2021-11-13 18:56:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states.
[2021-11-13 18:56:11,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 622.
[2021-11-13 18:56:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 537 states have (on average 1.2700186219739293) internal successors, (682), 543 states have internal predecessors, (682), 49 states have call successors, (49), 30 states have call predecessors, (49), 35 states have return successors, (62), 50 states have call predecessors, (62), 49 states have call successors, (62)
[2021-11-13 18:56:11,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 793 transitions.
[2021-11-13 18:56:11,231 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 793 transitions. Word has length 67
[2021-11-13 18:56:11,231 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:11,231 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 793 transitions.
[2021-11-13 18:56:11,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 18:56:11,231 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 793 transitions.
[2021-11-13 18:56:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2021-11-13 18:56:11,233 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:11,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:11,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:11,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:11,444 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:11,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -241037013, now seen corresponding path program 1 times
[2021-11-13 18:56:11,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:11,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294007677]
[2021-11-13 18:56:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:11,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:11,446 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:11,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process
[2021-11-13 18:56:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:11,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:56:11,518 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:11,698 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:11,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:11,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294007677]
[2021-11-13 18:56:11,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294007677] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:11,924 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:11,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5
[2021-11-13 18:56:11,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509889435]
[2021-11-13 18:56:11,925 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:11,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:56:11,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:11,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:56:11,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:56:11,926 INFO L87 Difference]: Start difference. First operand 622 states and 793 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 18:56:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:12,242 INFO L93 Difference]: Finished difference Result 1775 states and 2262 transitions.
[2021-11-13 18:56:12,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:56:12,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68
[2021-11-13 18:56:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:12,252 INFO L225 Difference]: With dead ends: 1775
[2021-11-13 18:56:12,252 INFO L226 Difference]: Without dead ends: 1171
[2021-11-13 18:56:12,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:56:12,255 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 194 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 191.24ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:12,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 511 Invalid, 167 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [43 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 191.24ms Time]
[2021-11-13 18:56:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states.
[2021-11-13 18:56:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1086.
[2021-11-13 18:56:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 929 states have (on average 1.2518837459634016) internal successors, (1163), 945 states have internal predecessors, (1163), 89 states have call successors, (89), 52 states have call predecessors, (89), 67 states have return successors, (134), 92 states have call predecessors, (134), 89 states have call successors, (134)
[2021-11-13 18:56:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1386 transitions.
[2021-11-13 18:56:12,393 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1386 transitions. Word has length 68
[2021-11-13 18:56:12,393 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:12,394 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 1386 transitions.
[2021-11-13 18:56:12,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 18:56:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1386 transitions.
[2021-11-13 18:56:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2021-11-13 18:56:12,396 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:12,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:12,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:12,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:12,614 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash -39213079, now seen corresponding path program 1 times
[2021-11-13 18:56:12,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:12,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953778002]
[2021-11-13 18:56:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:12,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:12,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:12,616 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:12,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process
[2021-11-13 18:56:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:12,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:12,678 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:12,798 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:12,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:12,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953778002]
[2021-11-13 18:56:12,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953778002] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:12,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:12,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2021-11-13 18:56:12,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568510158]
[2021-11-13 18:56:12,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:12,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:56:12,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:56:12,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:56:12,928 INFO L87 Difference]: Start difference. First operand 1086 states and 1386 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)
[2021-11-13 18:56:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:13,034 INFO L93 Difference]: Finished difference Result 2146 states and 2730 transitions.
[2021-11-13 18:56:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:56:13,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68
[2021-11-13 18:56:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:13,043 INFO L225 Difference]: With dead ends: 2146
[2021-11-13 18:56:13,043 INFO L226 Difference]: Without dead ends: 1076
[2021-11-13 18:56:13,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:56:13,048 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 156 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.63ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:13,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 163 Invalid, 2 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 6.63ms Time]
[2021-11-13 18:56:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states.
[2021-11-13 18:56:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1076.
[2021-11-13 18:56:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 925 states have (on average 1.250810810810811) internal successors, (1157), 939 states have internal predecessors, (1157), 83 states have call successors, (83), 52 states have call predecessors, (83), 67 states have return successors, (126), 86 states have call predecessors, (126), 83 states have call successors, (126)
[2021-11-13 18:56:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1366 transitions.
[2021-11-13 18:56:13,160 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1366 transitions. Word has length 68
[2021-11-13 18:56:13,160 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:13,160 INFO L470 AbstractCegarLoop]: Abstraction has 1076 states and 1366 transitions.
[2021-11-13 18:56:13,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)
[2021-11-13 18:56:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1366 transitions.
[2021-11-13 18:56:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2021-11-13 18:56:13,161 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:13,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:13,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:13,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:13,366 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1602304156, now seen corresponding path program 1 times
[2021-11-13 18:56:13,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:13,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030912210]
[2021-11-13 18:56:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:13,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:13,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:13,368 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:13,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process
[2021-11-13 18:56:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:13,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:13,431 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:13,595 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:13,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:13,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030912210]
[2021-11-13 18:56:13,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030912210] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:13,755 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:13,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3
[2021-11-13 18:56:13,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434778286]
[2021-11-13 18:56:13,755 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:13,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:56:13,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:56:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:56:13,757 INFO L87 Difference]: Start difference. First operand 1076 states and 1366 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10)
[2021-11-13 18:56:13,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:13,949 INFO L93 Difference]: Finished difference Result 3140 states and 4030 transitions.
[2021-11-13 18:56:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:56:13,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 69
[2021-11-13 18:56:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:13,964 INFO L225 Difference]: With dead ends: 3140
[2021-11-13 18:56:13,964 INFO L226 Difference]: Without dead ends: 2080
[2021-11-13 18:56:13,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:56:13,969 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 88 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.71ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:13,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 313 Invalid, 10 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 8.71ms Time]
[2021-11-13 18:56:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states.
[2021-11-13 18:56:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2064.
[2021-11-13 18:56:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 1770 states have (on average 1.235593220338983) internal successors, (2187), 1796 states have internal predecessors, (2187), 159 states have call successors, (159), 104 states have call predecessors, (159), 134 states have return successors, (245), 165 states have call predecessors, (245), 159 states have call successors, (245)
[2021-11-13 18:56:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2591 transitions.
[2021-11-13 18:56:14,177 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2591 transitions. Word has length 69
[2021-11-13 18:56:14,178 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:14,179 INFO L470 AbstractCegarLoop]: Abstraction has 2064 states and 2591 transitions.
[2021-11-13 18:56:14,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10)
[2021-11-13 18:56:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2591 transitions.
[2021-11-13 18:56:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2021-11-13 18:56:14,190 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:14,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:14,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:14,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:14,402 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:14,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash 721718035, now seen corresponding path program 1 times
[2021-11-13 18:56:14,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:14,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317452345]
[2021-11-13 18:56:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:14,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:14,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:14,404 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:14,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process
[2021-11-13 18:56:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:14,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:14,480 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:14,653 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 18:56:14,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:14,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317452345]
[2021-11-13 18:56:14,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317452345] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:14,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:14,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2021-11-13 18:56:14,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888867749]
[2021-11-13 18:56:14,801 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:14,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:56:14,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:56:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:56:14,802 INFO L87 Difference]: Start difference. First operand 2064 states and 2591 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2021-11-13 18:56:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:15,302 INFO L93 Difference]: Finished difference Result 7096 states and 8939 transitions.
[2021-11-13 18:56:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:56:15,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 88
[2021-11-13 18:56:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:15,330 INFO L225 Difference]: With dead ends: 7096
[2021-11-13 18:56:15,330 INFO L226 Difference]: Without dead ends: 4078
[2021-11-13 18:56:15,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:56:15,340 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 257 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.25ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:15,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 660 Invalid, 52 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [14 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 72.25ms Time]
[2021-11-13 18:56:15,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states.
[2021-11-13 18:56:15,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 4078.
[2021-11-13 18:56:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 3498 states have (on average 1.2289879931389365) internal successors, (4299), 3548 states have internal predecessors, (4299), 311 states have call successors, (311), 208 states have call predecessors, (311), 268 states have return successors, (509), 323 states have call predecessors, (509), 311 states have call successors, (509)
[2021-11-13 18:56:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 5119 transitions.
[2021-11-13 18:56:15,728 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 5119 transitions. Word has length 88
[2021-11-13 18:56:15,729 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:15,729 INFO L470 AbstractCegarLoop]: Abstraction has 4078 states and 5119 transitions.
[2021-11-13 18:56:15,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2021-11-13 18:56:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 5119 transitions.
[2021-11-13 18:56:15,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2021-11-13 18:56:15,737 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:15,737 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:15,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:15,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:15,949 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:15,950 INFO L85 PathProgramCache]: Analyzing trace with hash 935655023, now seen corresponding path program 1 times
[2021-11-13 18:56:15,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:15,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266680760]
[2021-11-13 18:56:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:15,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:15,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:15,952 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:15,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process
[2021-11-13 18:56:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:16,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:16,043 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-11-13 18:56:16,310 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2021-11-13 18:56:16,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:16,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266680760]
[2021-11-13 18:56:16,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266680760] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:16,590 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:16,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3
[2021-11-13 18:56:16,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479668612]
[2021-11-13 18:56:16,591 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:16,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:56:16,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:16,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:56:16,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:56:16,592 INFO L87 Difference]: Start difference. First operand 4078 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)
[2021-11-13 18:56:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:17,008 INFO L93 Difference]: Finished difference Result 8925 states and 11200 transitions.
[2021-11-13 18:56:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:56:17,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119
[2021-11-13 18:56:17,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:17,042 INFO L225 Difference]: With dead ends: 8925
[2021-11-13 18:56:17,042 INFO L226 Difference]: Without dead ends: 4863
[2021-11-13 18:56:17,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:56:17,057 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 70 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.32ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:17,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 342 Invalid, 10 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 9.32ms Time]
[2021-11-13 18:56:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states.
[2021-11-13 18:56:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4831.
[2021-11-13 18:56:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4831 states, 4133 states have (on average 1.221146866682797) internal successors, (5047), 4189 states have internal predecessors, (5047), 379 states have call successors, (379), 252 states have call predecessors, (379), 318 states have return successors, (599), 391 states have call predecessors, (599), 379 states have call successors, (599)
[2021-11-13 18:56:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4831 states to 4831 states and 6025 transitions.
[2021-11-13 18:56:17,549 INFO L78 Accepts]: Start accepts. Automaton has 4831 states and 6025 transitions. Word has length 119
[2021-11-13 18:56:17,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:17,549 INFO L470 AbstractCegarLoop]: Abstraction has 4831 states and 6025 transitions.
[2021-11-13 18:56:17,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)
[2021-11-13 18:56:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4831 states and 6025 transitions.
[2021-11-13 18:56:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124
[2021-11-13 18:56:17,556 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:17,556 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:17,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:17,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:17,767 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:17,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1170571096, now seen corresponding path program 1 times
[2021-11-13 18:56:17,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:17,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889627704]
[2021-11-13 18:56:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:17,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:17,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:17,769 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:17,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process
[2021-11-13 18:56:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:17,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:17,856 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:56:18,056 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2021-11-13 18:56:18,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:18,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889627704]
[2021-11-13 18:56:18,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889627704] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:18,260 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:18,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2021-11-13 18:56:18,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126062079]
[2021-11-13 18:56:18,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:18,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:56:18,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:56:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:56:18,263 INFO L87 Difference]: Start difference. First operand 4831 states and 6025 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)
[2021-11-13 18:56:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:18,800 INFO L93 Difference]: Finished difference Result 9202 states and 11493 transitions.
[2021-11-13 18:56:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:56:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 123
[2021-11-13 18:56:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:18,838 INFO L225 Difference]: With dead ends: 9202
[2021-11-13 18:56:18,839 INFO L226 Difference]: Without dead ends: 5142
[2021-11-13 18:56:18,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:56:18,857 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 252 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.28ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.70ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:18,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 464 Invalid, 33 Unknown, 0 Unchecked, 3.28ms Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 40.70ms Time]
[2021-11-13 18:56:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5142 states.
[2021-11-13 18:56:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5142 to 4831.
[2021-11-13 18:56:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4831 states, 4133 states have (on average 1.2153399467699009) internal successors, (5023), 4189 states have internal predecessors, (5023), 379 states have call successors, (379), 252 states have call predecessors, (379), 318 states have return successors, (575), 391 states have call predecessors, (575), 379 states have call successors, (575)
[2021-11-13 18:56:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4831 states to 4831 states and 5977 transitions.
[2021-11-13 18:56:19,331 INFO L78 Accepts]: Start accepts. Automaton has 4831 states and 5977 transitions. Word has length 123
[2021-11-13 18:56:19,331 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:19,332 INFO L470 AbstractCegarLoop]: Abstraction has 4831 states and 5977 transitions.
[2021-11-13 18:56:19,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)
[2021-11-13 18:56:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4831 states and 5977 transitions.
[2021-11-13 18:56:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2021-11-13 18:56:19,339 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:19,340 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:19,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:19,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:19,551 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:19,552 INFO L85 PathProgramCache]: Analyzing trace with hash -970215938, now seen corresponding path program 1 times
[2021-11-13 18:56:19,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:19,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114732553]
[2021-11-13 18:56:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:19,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:19,554 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:19,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process
[2021-11-13 18:56:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:19,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:19,658 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2021-11-13 18:56:19,903 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2021-11-13 18:56:20,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:20,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114732553]
[2021-11-13 18:56:20,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114732553] provided 1 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:56:20,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:56:20,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4
[2021-11-13 18:56:20,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218478380]
[2021-11-13 18:56:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:20,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:56:20,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:56:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:56:20,219 INFO L87 Difference]: Start difference. First operand 4831 states and 5977 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 18:56:20,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:20,825 INFO L93 Difference]: Finished difference Result 11576 states and 14707 transitions.
[2021-11-13 18:56:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:56:20,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 154
[2021-11-13 18:56:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:20,870 INFO L225 Difference]: With dead ends: 11576
[2021-11-13 18:56:20,870 INFO L226 Difference]: Without dead ends: 5827
[2021-11-13 18:56:20,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 304 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 18:56:20,889 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 123 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.58ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:20,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 315 Invalid, 12 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 13.58ms Time]
[2021-11-13 18:56:20,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states.
[2021-11-13 18:56:21,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5827.
[2021-11-13 18:56:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 4986 states have (on average 1.2049739269955877) internal successors, (6008), 5054 states have internal predecessors, (6008), 455 states have call successors, (455), 304 states have call predecessors, (455), 385 states have return successors, (737), 470 states have call predecessors, (737), 455 states have call successors, (737)
[2021-11-13 18:56:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 7200 transitions.
[2021-11-13 18:56:21,474 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 7200 transitions. Word has length 154
[2021-11-13 18:56:21,474 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:21,475 INFO L470 AbstractCegarLoop]: Abstraction has 5827 states and 7200 transitions.
[2021-11-13 18:56:21,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 18:56:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 7200 transitions.
[2021-11-13 18:56:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2021-11-13 18:56:21,484 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:21,485 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:21,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:21,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:21,696 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:21,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1358937995, now seen corresponding path program 1 times
[2021-11-13 18:56:21,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:21,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249989343]
[2021-11-13 18:56:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:21,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:21,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:21,698 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:21,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process
[2021-11-13 18:56:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:21,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:21,791 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2021-11-13 18:56:22,041 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2021-11-13 18:56:22,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:22,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249989343]
[2021-11-13 18:56:22,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249989343] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:22,290 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:22,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4
[2021-11-13 18:56:22,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540920107]
[2021-11-13 18:56:22,291 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:22,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:56:22,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:22,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:56:22,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:56:22,292 INFO L87 Difference]: Start difference. First operand 5827 states and 7200 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11)
[2021-11-13 18:56:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:23,051 INFO L93 Difference]: Finished difference Result 16695 states and 21088 transitions.
[2021-11-13 18:56:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:56:23,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 155
[2021-11-13 18:56:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:23,102 INFO L225 Difference]: With dead ends: 16695
[2021-11-13 18:56:23,102 INFO L226 Difference]: Without dead ends: 10884
[2021-11-13 18:56:23,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 306 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 18:56:23,140 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 265 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.98ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:23,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 527 Invalid, 72 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 102.98ms Time]
[2021-11-13 18:56:23,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10884 states.
[2021-11-13 18:56:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10884 to 10833.
[2021-11-13 18:56:23,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10833 states, 9268 states have (on average 1.1847216227880881) internal successors, (10980), 9380 states have internal predecessors, (10980), 855 states have call successors, (855), 584 states have call predecessors, (855), 709 states have return successors, (1291), 870 states have call predecessors, (1291), 855 states have call successors, (1291)
[2021-11-13 18:56:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10833 states to 10833 states and 13126 transitions.
[2021-11-13 18:56:23,923 INFO L78 Accepts]: Start accepts. Automaton has 10833 states and 13126 transitions. Word has length 155
[2021-11-13 18:56:23,924 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:23,924 INFO L470 AbstractCegarLoop]: Abstraction has 10833 states and 13126 transitions.
[2021-11-13 18:56:23,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11)
[2021-11-13 18:56:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 10833 states and 13126 transitions.
[2021-11-13 18:56:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2021-11-13 18:56:23,933 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:23,933 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:23,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:24,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:24,145 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:24,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash 217702764, now seen corresponding path program 1 times
[2021-11-13 18:56:24,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:24,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50370729]
[2021-11-13 18:56:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:24,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:24,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:24,147 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:24,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process
[2021-11-13 18:56:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:56:24,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:24,261 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-11-13 18:56:24,577 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked.
[2021-11-13 18:56:24,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:24,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50370729]
[2021-11-13 18:56:24,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50370729] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:24,818 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:24,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4
[2021-11-13 18:56:24,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437842957]
[2021-11-13 18:56:24,819 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:24,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:56:24,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:24,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:56:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:56:24,820 INFO L87 Difference]: Start difference. First operand 10833 states and 13126 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15)
[2021-11-13 18:56:25,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:25,521 INFO L93 Difference]: Finished difference Result 20263 states and 24951 transitions.
[2021-11-13 18:56:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:56:25,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 156
[2021-11-13 18:56:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:25,562 INFO L225 Difference]: With dead ends: 20263
[2021-11-13 18:56:25,562 INFO L226 Difference]: Without dead ends: 10865
[2021-11-13 18:56:25,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 308 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 18:56:25,588 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 212 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.30ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:25,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 507 Invalid, 66 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 108.30ms Time]
[2021-11-13 18:56:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10865 states.
[2021-11-13 18:56:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10865 to 10833.
[2021-11-13 18:56:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10833 states, 9268 states have (on average 1.1615235217954252) internal successors, (10765), 9380 states have internal predecessors, (10765), 855 states have call successors, (855), 584 states have call predecessors, (855), 709 states have return successors, (1291), 870 states have call predecessors, (1291), 855 states have call successors, (1291)
[2021-11-13 18:56:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10833 states to 10833 states and 12911 transitions.
[2021-11-13 18:56:26,582 INFO L78 Accepts]: Start accepts. Automaton has 10833 states and 12911 transitions. Word has length 156
[2021-11-13 18:56:26,582 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:26,582 INFO L470 AbstractCegarLoop]: Abstraction has 10833 states and 12911 transitions.
[2021-11-13 18:56:26,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15)
[2021-11-13 18:56:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 10833 states and 12911 transitions.
[2021-11-13 18:56:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2021-11-13 18:56:26,593 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:26,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:26,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0
[2021-11-13 18:56:26,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:26,805 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1852604969, now seen corresponding path program 2 times
[2021-11-13 18:56:26,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:26,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810358395]
[2021-11-13 18:56:26,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:56:26,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:26,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:26,807 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:26,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process
[2021-11-13 18:56:26,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:56:26,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:56:26,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 18:56:26,933 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:56:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2021-11-13 18:56:27,234 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:56:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2021-11-13 18:56:27,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:56:27,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810358395]
[2021-11-13 18:56:27,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810358395] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:56:27,528 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:56:27,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5
[2021-11-13 18:56:27,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580028203]
[2021-11-13 18:56:27,529 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:56:27,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:56:27,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:56:27,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:56:27,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:56:27,532 INFO L87 Difference]: Start difference. First operand 10833 states and 12911 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)
[2021-11-13 18:56:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:56:28,086 INFO L93 Difference]: Finished difference Result 16076 states and 19362 transitions.
[2021-11-13 18:56:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:56:28,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 156
[2021-11-13 18:56:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:56:28,096 INFO L225 Difference]: With dead ends: 16076
[2021-11-13 18:56:28,096 INFO L226 Difference]: Without dead ends: 2719
[2021-11-13 18:56:28,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:56:28,115 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 269 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.75ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:56:28,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 325 Invalid, 80 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [35 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 71.75ms Time]
[2021-11-13 18:56:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states.
[2021-11-13 18:56:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2713.
[2021-11-13 18:56:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2304 states have (on average 1.0863715277777777) internal successors, (2503), 2324 states have internal predecessors, (2503), 233 states have call successors, (233), 156 states have call predecessors, (233), 175 states have return successors, (297), 234 states have call predecessors, (297), 233 states have call successors, (297)
[2021-11-13 18:56:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 3033 transitions.
[2021-11-13 18:56:28,327 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 3033 transitions. Word has length 156
[2021-11-13 18:56:28,328 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:56:28,328 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 3033 transitions.
[2021-11-13 18:56:28,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)
[2021-11-13 18:56:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 3033 transitions.
[2021-11-13 18:56:28,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2021-11-13 18:56:28,333 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:56:28,333 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:28,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:28,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:28,544 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:56:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:56:28,545 INFO L85 PathProgramCache]: Analyzing trace with hash -217774742, now seen corresponding path program 1 times
[2021-11-13 18:56:28,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:56:28,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281512567]
[2021-11-13 18:56:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:56:28,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:56:28,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:56:28,546 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:56:28,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process
[2021-11-13 18:56:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:56:28,633 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 18:56:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:56:28,980 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2021-11-13 18:56:28,981 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 18:56:28,982 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 18:56:29,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0
[2021-11-13 18:56:29,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:56:29,201 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:56:29,204 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:56:29,253 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 18:56:29,256 INFO L158 Benchmark]: Toolchain (without parser) took 27181.86ms. Allocated memory was 60.8MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 40.1MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 406.6MB. Max. memory is 16.1GB.
[2021-11-13 18:56:29,257 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:56:29,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.68ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 26.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-11-13 18:56:29,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.37ms. Allocated memory is still 60.8MB. Free memory was 26.5MB in the beginning and 24.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:56:29,258 INFO L158 Benchmark]: Boogie Preprocessor took 40.57ms. Allocated memory is still 60.8MB. Free memory was 24.6MB in the beginning and 22.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:56:29,258 INFO L158 Benchmark]: RCFGBuilder took 665.33ms. Allocated memory is still 60.8MB. Free memory was 22.7MB in the beginning and 26.9MB in the end (delta: -4.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB.
[2021-11-13 18:56:29,259 INFO L158 Benchmark]: TraceAbstraction took 26121.86ms. Allocated memory was 60.8MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 26.4MB in the beginning and 1.4GB in the end (delta: -1.4GB). Peak memory consumption was 390.3MB. Max. memory is 16.1GB.
[2021-11-13 18:56:29,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 304.68ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 26.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 43.37ms. Allocated memory is still 60.8MB. Free memory was 26.5MB in the beginning and 24.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 40.57ms. Allocated memory is still 60.8MB. Free memory was 24.6MB in the beginning and 22.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 665.33ms. Allocated memory is still 60.8MB. Free memory was 22.7MB in the beginning and 26.9MB in the end (delta: -4.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 26121.86ms. Allocated memory was 60.8MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 26.4MB in the beginning and 1.4GB in the end (delta: -1.4GB). Peak memory consumption was 390.3MB. 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 18:56:29,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3761728f-43b0-4513-9cdf-bc1bd9f6c486/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