./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test25-1.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version b2eff8ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD --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 de251549242251e9f54823879039d01198e32edde0d5daa52ae9e52ec83fdcc8
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-b2eff8b
[2021-10-28 23:11:24,276 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-10-28 23:11:24,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-28 23:11:24,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-28 23:11:24,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-28 23:11:24,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-28 23:11:24,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-28 23:11:24,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-28 23:11:24,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-28 23:11:24,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-28 23:11:24,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-10-28 23:11:24,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-28 23:11:24,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-28 23:11:24,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-28 23:11:24,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-28 23:11:24,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-28 23:11:24,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-28 23:11:24,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-28 23:11:24,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-28 23:11:24,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-28 23:11:24,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-28 23:11:24,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-28 23:11:24,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-10-28 23:11:24,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-28 23:11:24,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-28 23:11:24,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-28 23:11:24,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-28 23:11:24,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-28 23:11:24,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-28 23:11:24,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-28 23:11:24,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-28 23:11:24,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-28 23:11:24,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-28 23:11:24,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-28 23:11:24,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-28 23:11:24,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-28 23:11:24,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-28 23:11:24,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-28 23:11:24,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-28 23:11:24,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-28 23:11:24,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-10-28 23:11:24,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-28 23:11:24,492 INFO L113 SettingsManager]: Loading preferences was successful
[2021-10-28 23:11:24,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-28 23:11:24,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-28 23:11:24,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-28 23:11:24,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-28 23:11:24,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-10-28 23:11:24,504 INFO L138 SettingsManager]: * Use SBE=true
[2021-10-28 23:11:24,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-28 23:11:24,505 INFO L138 SettingsManager]: * sizeof long=4
[2021-10-28 23:11:24,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-10-28 23:11:24,506 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-10-28 23:11:24,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-10-28 23:11:24,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-10-28 23:11:24,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-28 23:11:24,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-10-28 23:11:24,508 INFO L138 SettingsManager]: * sizeof long double=12
[2021-10-28 23:11:24,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-10-28 23:11:24,509 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-10-28 23:11:24,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-10-28 23:11:24,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-28 23:11:24,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-10-28 23:11:24,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-10-28 23:11:24,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:11:24,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-28 23:11:24,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-10-28 23:11:24,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-28 23:11:24,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-10-28 23:11:24,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-28 23:11:24,513 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-10-28 23:11:24,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-10-28 23:11:24,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-28 23:11:24,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-10-28 23:11:24,516 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_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de251549242251e9f54823879039d01198e32edde0d5daa52ae9e52ec83fdcc8
[2021-10-28 23:11:24,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-28 23:11:24,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-28 23:11:24,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-28 23:11:24,847 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-10-28 23:11:24,868 INFO L275 PluginConnector]: CDTParser initialized
[2021-10-28 23:11:24,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/ldv-regression/test25-1.c
[2021-10-28 23:11:24,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/data/1de83905a/fb9470909ea54c5a933ca1dae57ed6c7/FLAG22e4c112e
[2021-10-28 23:11:25,513 INFO L306 CDTParser]: Found 1 translation units.
[2021-10-28 23:11:25,513 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/sv-benchmarks/c/ldv-regression/test25-1.c
[2021-10-28 23:11:25,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/data/1de83905a/fb9470909ea54c5a933ca1dae57ed6c7/FLAG22e4c112e
[2021-10-28 23:11:25,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/data/1de83905a/fb9470909ea54c5a933ca1dae57ed6c7
[2021-10-28 23:11:25,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-28 23:11:25,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-28 23:11:25,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-28 23:11:25,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-28 23:11:25,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-28 23:11:25,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:11:25" (1/1) ...
[2021-10-28 23:11:25,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cf4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:25, skipping insertion in model container
[2021-10-28 23:11:25,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:11:25" (1/1) ...
[2021-10-28 23:11:25,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-10-28 23:11:25,932 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-10-28 23:11:26,186 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_245c7997-9257-43e4-9286-4208d3431b8b/sv-benchmarks/c/ldv-regression/test25-1.c[936,949]
[2021-10-28 23:11:26,192 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:11:26,212 INFO L203 MainTranslator]: Completed pre-run
[2021-10-28 23:11:26,255 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_245c7997-9257-43e4-9286-4208d3431b8b/sv-benchmarks/c/ldv-regression/test25-1.c[936,949]
[2021-10-28 23:11:26,263 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:11:26,283 INFO L208 MainTranslator]: Completed translation
[2021-10-28 23:11:26,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26 WrapperNode
[2021-10-28 23:11:26,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-28 23:11:26,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-28 23:11:26,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-28 23:11:26,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-28 23:11:26,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-28 23:11:26,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-28 23:11:26,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-28 23:11:26,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-10-28 23:11:26,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-28 23:11:26,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-28 23:11:26,413 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-10-28 23:11:26,414 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-10-28 23:11:26,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (1/1) ...
[2021-10-28 23:11:26,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:11:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:26,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-28 23:11:26,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-28 23:11:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-10-28 23:11:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-28 23:11:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-10-28 23:11:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-28 23:11:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-10-28 23:11:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-28 23:11:26,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-28 23:11:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-10-28 23:11:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-10-28 23:11:26,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-28 23:11:26,793 INFO L299 CfgBuilder]: Removed 8 assume(true) statements.
[2021-10-28 23:11:26,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:11:26 BoogieIcfgContainer
[2021-10-28 23:11:26,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-28 23:11:26,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-28 23:11:26,798 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-10-28 23:11:26,802 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-10-28 23:11:26,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:11:25" (1/3) ...
[2021-10-28 23:11:26,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6ffeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:11:26, skipping insertion in model container
[2021-10-28 23:11:26,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:26" (2/3) ...
[2021-10-28 23:11:26,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6ffeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:11:26, skipping insertion in model container
[2021-10-28 23:11:26,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:11:26" (3/3) ...
[2021-10-28 23:11:26,806 INFO L111 eAbstractionObserver]: Analyzing ICFG test25-1.c
[2021-10-28 23:11:26,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-28 23:11:26,812 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-10-28 23:11:26,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-28 23:11:26,874 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
[2021-10-28 23:11:26,875 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-10-28 23:11:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-10-28 23:11:26,896 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:26,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:26,897 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash -631347226, now seen corresponding path program 1 times
[2021-10-28 23:11:26,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:26,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626328163]
[2021-10-28 23:11:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:26,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:11:27,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:27,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626328163]
[2021-10-28 23:11:27,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626328163] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:11:27,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:11:27,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-10-28 23:11:27,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780301696]
[2021-10-28 23:11:27,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-10-28 23:11:27,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-10-28 23:11:27,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-28 23:11:27,251 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:27,313 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions.
[2021-10-28 23:11:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-10-28 23:11:27,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2021-10-28 23:11:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:27,336 INFO L225 Difference]: With dead ends: 32
[2021-10-28 23:11:27,337 INFO L226 Difference]: Without dead ends: 15
[2021-10-28 23:11:27,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-28 23:11:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2021-10-28 23:11:27,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14.
[2021-10-28 23:11:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions.
[2021-10-28 23:11:27,376 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10
[2021-10-28 23:11:27,376 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:27,376 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions.
[2021-10-28 23:11:27,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions.
[2021-10-28 23:11:27,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-10-28 23:11:27,378 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:27,379 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:27,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-28 23:11:27,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:27,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:27,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1434190826, now seen corresponding path program 1 times
[2021-10-28 23:11:27,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:27,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866353341]
[2021-10-28 23:11:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:27,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:11:27,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:27,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866353341]
[2021-10-28 23:11:27,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866353341] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:27,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775083797]
[2021-10-28 23:11:27,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:27,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:27,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:27,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:27,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-10-28 23:11:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:27,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-10-28 23:11:27,661 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:11:27,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775083797] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:27,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:27,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5
[2021-10-28 23:11:27,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926525018]
[2021-10-28 23:11:27,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-28 23:11:27,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-28 23:11:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:11:27,806 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:27,845 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions.
[2021-10-28 23:11:27,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-10-28 23:11:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2021-10-28 23:11:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:27,848 INFO L225 Difference]: With dead ends: 26
[2021-10-28 23:11:27,848 INFO L226 Difference]: Without dead ends: 17
[2021-10-28 23:11:27,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:11:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2021-10-28 23:11:27,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16.
[2021-10-28 23:11:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2021-10-28 23:11:27,858 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13
[2021-10-28 23:11:27,858 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:27,860 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2021-10-28 23:11:27,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2021-10-28 23:11:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-10-28 23:11:27,866 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:27,866 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:27,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:28,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:28,094 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 201480788, now seen corresponding path program 2 times
[2021-10-28 23:11:28,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:28,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622328486]
[2021-10-28 23:11:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:28,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:11:28,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:28,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622328486]
[2021-10-28 23:11:28,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622328486] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:28,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131994624]
[2021-10-28 23:11:28,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:11:28,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:28,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:28,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:28,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-28 23:11:28,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2021-10-28 23:11:28,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:11:28,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core
[2021-10-28 23:11:28,277 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:28,477 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size
[2021-10-28 23:11:28,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 12
[2021-10-28 23:11:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-10-28 23:11:28,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131994624] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:11:28,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:11:28,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2021-10-28 23:11:28,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462136563]
[2021-10-28 23:11:28,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-28 23:11:28,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:28,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-28 23:11:28,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:11:28,508 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:28,603 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions.
[2021-10-28 23:11:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-28 23:11:28,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2021-10-28 23:11:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:28,605 INFO L225 Difference]: With dead ends: 23
[2021-10-28 23:11:28,605 INFO L226 Difference]: Without dead ends: 18
[2021-10-28 23:11:28,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:11:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2021-10-28 23:11:28,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2021-10-28 23:11:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:28,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2021-10-28 23:11:28,615 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15
[2021-10-28 23:11:28,615 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:28,616 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2021-10-28 23:11:28,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:28,616 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2021-10-28 23:11:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-10-28 23:11:28,617 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:28,617 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:28,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:28,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:28,835 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:28,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:28,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1859304665, now seen corresponding path program 1 times
[2021-10-28 23:11:28,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:28,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704088505]
[2021-10-28 23:11:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:28,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-28 23:11:29,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:29,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704088505]
[2021-10-28 23:11:29,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704088505] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:29,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359713414]
[2021-10-28 23:11:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:29,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:29,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:29,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-10-28 23:11:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:29,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-10-28 23:11:29,127 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-28 23:11:29,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359713414] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:29,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:29,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6
[2021-10-28 23:11:29,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543439748]
[2021-10-28 23:11:29,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-28 23:11:29,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-28 23:11:29,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:11:29,192 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:29,228 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions.
[2021-10-28 23:11:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-28 23:11:29,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2021-10-28 23:11:29,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:29,231 INFO L225 Difference]: With dead ends: 32
[2021-10-28 23:11:29,231 INFO L226 Difference]: Without dead ends: 21
[2021-10-28 23:11:29,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:11:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2021-10-28 23:11:29,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20.
[2021-10-28 23:11:29,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions.
[2021-10-28 23:11:29,244 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17
[2021-10-28 23:11:29,245 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:29,246 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions.
[2021-10-28 23:11:29,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:29,246 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions.
[2021-10-28 23:11:29,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-10-28 23:11:29,248 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:29,248 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:29,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:29,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2021-10-28 23:11:29,462 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash 291228695, now seen corresponding path program 2 times
[2021-10-28 23:11:29,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:29,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763337790]
[2021-10-28 23:11:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:29,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-28 23:11:29,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:29,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763337790]
[2021-10-28 23:11:29,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763337790] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:29,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657731604]
[2021-10-28 23:11:29,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:11:29,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:29,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:29,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-10-28 23:11:29,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:11:29,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:11:29,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-10-28 23:11:29,635 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-28 23:11:29,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657731604] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:29,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:29,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2021-10-28 23:11:29,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053937966]
[2021-10-28 23:11:29,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-10-28 23:11:29,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:29,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-10-28 23:11:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-10-28 23:11:29,707 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:29,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:29,738 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions.
[2021-10-28 23:11:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-28 23:11:29,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19
[2021-10-28 23:11:29,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:29,740 INFO L225 Difference]: With dead ends: 34
[2021-10-28 23:11:29,740 INFO L226 Difference]: Without dead ends: 23
[2021-10-28 23:11:29,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-10-28 23:11:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-10-28 23:11:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22.
[2021-10-28 23:11:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2021-10-28 23:11:29,745 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19
[2021-10-28 23:11:29,745 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:29,745 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2021-10-28 23:11:29,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2021-10-28 23:11:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-10-28 23:11:29,746 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:29,747 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:29,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:29,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:29,961 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:29,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:29,962 INFO L85 PathProgramCache]: Analyzing trace with hash 903742421, now seen corresponding path program 3 times
[2021-10-28 23:11:29,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:29,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776101697]
[2021-10-28 23:11:29,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:29,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-28 23:11:30,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:30,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776101697]
[2021-10-28 23:11:30,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776101697] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:30,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220641012]
[2021-10-28 23:11:30,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-28 23:11:30,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:30,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:30,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:30,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-10-28 23:11:30,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-10-28 23:11:30,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:11:30,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-10-28 23:11:30,187 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:30,398 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size
[2021-10-28 23:11:30,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 12
[2021-10-28 23:11:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-10-28 23:11:30,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220641012] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:30,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:30,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11
[2021-10-28 23:11:30,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030585839]
[2021-10-28 23:11:30,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-10-28 23:11:30,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:30,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-10-28 23:11:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110
[2021-10-28 23:11:30,432 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:30,589 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions.
[2021-10-28 23:11:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-10-28 23:11:30,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-10-28 23:11:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:30,591 INFO L225 Difference]: With dead ends: 38
[2021-10-28 23:11:30,591 INFO L226 Difference]: Without dead ends: 27
[2021-10-28 23:11:30,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2021-10-28 23:11:30,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-10-28 23:11:30,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26.
[2021-10-28 23:11:30,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions.
[2021-10-28 23:11:30,595 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21
[2021-10-28 23:11:30,595 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:30,595 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions.
[2021-10-28 23:11:30,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions.
[2021-10-28 23:11:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-10-28 23:11:30,597 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:30,597 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:30,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:30,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:30,798 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1251069224, now seen corresponding path program 4 times
[2021-10-28 23:11:30,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:30,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344366451]
[2021-10-28 23:11:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:30,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-10-28 23:11:30,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:30,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344366451]
[2021-10-28 23:11:30,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344366451] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:30,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478524705]
[2021-10-28 23:11:30,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-10-28 23:11:30,904 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:30,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:30,914 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:30,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-10-28 23:11:31,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-28 23:11:31,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:11:31,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjunts are in the unsatisfiable core
[2021-10-28 23:11:31,014 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:31,265 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size
[2021-10-28 23:11:31,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 12
[2021-10-28 23:11:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2021-10-28 23:11:31,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478524705] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:31,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:31,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13
[2021-10-28 23:11:31,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886295026]
[2021-10-28 23:11:31,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2021-10-28 23:11:31,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:31,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-10-28 23:11:31,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2021-10-28 23:11:31,310 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:31,485 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions.
[2021-10-28 23:11:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-10-28 23:11:31,486 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2021-10-28 23:11:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:31,487 INFO L225 Difference]: With dead ends: 44
[2021-10-28 23:11:31,487 INFO L226 Difference]: Without dead ends: 31
[2021-10-28 23:11:31,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240
[2021-10-28 23:11:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2021-10-28 23:11:31,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30.
[2021-10-28 23:11:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2021-10-28 23:11:31,492 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 25
[2021-10-28 23:11:31,493 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:31,493 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2021-10-28 23:11:31,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2021-10-28 23:11:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-10-28 23:11:31,494 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:31,494 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:31,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:31,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2021-10-28 23:11:31,702 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:31,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1378869733, now seen corresponding path program 5 times
[2021-10-28 23:11:31,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:31,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633734474]
[2021-10-28 23:11:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:31,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-10-28 23:11:31,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:31,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633734474]
[2021-10-28 23:11:31,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633734474] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:31,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220662681]
[2021-10-28 23:11:31,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-10-28 23:11:31,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:31,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:31,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:31,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-10-28 23:11:34,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2021-10-28 23:11:34,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:11:34,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-10-28 23:11:34,820 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-10-28 23:11:34,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220662681] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:34,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:34,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2021-10-28 23:11:34,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011482335]
[2021-10-28 23:11:34,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-10-28 23:11:34,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:34,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-28 23:11:34,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90
[2021-10-28 23:11:34,928 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:34,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:34,977 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions.
[2021-10-28 23:11:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-10-28 23:11:34,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29
[2021-10-28 23:11:34,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:34,979 INFO L225 Difference]: With dead ends: 48
[2021-10-28 23:11:34,979 INFO L226 Difference]: Without dead ends: 33
[2021-10-28 23:11:34,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90
[2021-10-28 23:11:34,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-10-28 23:11:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32.
[2021-10-28 23:11:34,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions.
[2021-10-28 23:11:34,985 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29
[2021-10-28 23:11:34,986 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:34,986 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions.
[2021-10-28 23:11:34,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions.
[2021-10-28 23:11:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-10-28 23:11:34,990 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:34,990 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:35,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:35,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:35,194 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1005994073, now seen corresponding path program 6 times
[2021-10-28 23:11:35,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:35,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198292498]
[2021-10-28 23:11:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:35,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-10-28 23:11:35,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:35,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198292498]
[2021-10-28 23:11:35,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198292498] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:35,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113394197]
[2021-10-28 23:11:35,336 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-10-28 23:11:35,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:35,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:35,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:35,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-10-28 23:11:37,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2021-10-28 23:11:37,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:11:37,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core
[2021-10-28 23:11:37,649 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:37,930 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size
[2021-10-28 23:11:37,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 12
[2021-10-28 23:11:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2021-10-28 23:11:37,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113394197] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:37,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:37,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16
[2021-10-28 23:11:37,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757649953]
[2021-10-28 23:11:37,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2021-10-28 23:11:37,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:37,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-10-28 23:11:37,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240
[2021-10-28 23:11:37,965 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:38,204 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions.
[2021-10-28 23:11:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-10-28 23:11:38,204 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31
[2021-10-28 23:11:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:38,205 INFO L225 Difference]: With dead ends: 52
[2021-10-28 23:11:38,205 INFO L226 Difference]: Without dead ends: 37
[2021-10-28 23:11:38,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380
[2021-10-28 23:11:38,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2021-10-28 23:11:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36.
[2021-10-28 23:11:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions.
[2021-10-28 23:11:38,211 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 31
[2021-10-28 23:11:38,212 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:38,212 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions.
[2021-10-28 23:11:38,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions.
[2021-10-28 23:11:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2021-10-28 23:11:38,213 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:38,213 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:38,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:38,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:38,426 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:38,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1595148508, now seen corresponding path program 7 times
[2021-10-28 23:11:38,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:38,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979102322]
[2021-10-28 23:11:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:38,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-10-28 23:11:38,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:38,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979102322]
[2021-10-28 23:11:38,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979102322] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:38,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393636662]
[2021-10-28 23:11:38,558 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-10-28 23:11:38,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:38,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:38,560 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:38,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-10-28 23:11:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:38,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-10-28 23:11:38,714 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-10-28 23:11:38,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393636662] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:38,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:38,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2021-10-28 23:11:38,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264523518]
[2021-10-28 23:11:38,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-10-28 23:11:38,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-10-28 23:11:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132
[2021-10-28 23:11:38,840 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:38,892 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions.
[2021-10-28 23:11:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-10-28 23:11:38,897 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35
[2021-10-28 23:11:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:38,898 INFO L225 Difference]: With dead ends: 56
[2021-10-28 23:11:38,898 INFO L226 Difference]: Without dead ends: 39
[2021-10-28 23:11:38,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132
[2021-10-28 23:11:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2021-10-28 23:11:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38.
[2021-10-28 23:11:38,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions.
[2021-10-28 23:11:38,903 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35
[2021-10-28 23:11:38,903 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:38,903 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions.
[2021-10-28 23:11:38,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions.
[2021-10-28 23:11:38,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2021-10-28 23:11:38,905 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:38,905 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:38,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:39,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:39,127 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:39,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1671756646, now seen corresponding path program 8 times
[2021-10-28 23:11:39,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:39,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610120209]
[2021-10-28 23:11:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:39,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-10-28 23:11:39,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:39,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610120209]
[2021-10-28 23:11:39,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610120209] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:39,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308032591]
[2021-10-28 23:11:39,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:11:39,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:39,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:39,266 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:39,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2021-10-28 23:11:39,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:11:39,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:11:39,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-10-28 23:11:39,450 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-10-28 23:11:39,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308032591] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:39,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:39,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2021-10-28 23:11:39,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133611987]
[2021-10-28 23:11:39,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2021-10-28 23:11:39,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:39,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-10-28 23:11:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2021-10-28 23:11:39,569 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:39,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:39,630 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions.
[2021-10-28 23:11:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-10-28 23:11:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2021-10-28 23:11:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:39,632 INFO L225 Difference]: With dead ends: 57
[2021-10-28 23:11:39,632 INFO L226 Difference]: Without dead ends: 40
[2021-10-28 23:11:39,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2021-10-28 23:11:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2021-10-28 23:11:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2021-10-28 23:11:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions.
[2021-10-28 23:11:39,651 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 37
[2021-10-28 23:11:39,651 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:39,651 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions.
[2021-10-28 23:11:39,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions.
[2021-10-28 23:11:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2021-10-28 23:11:39,654 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:39,654 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:39,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:39,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:39,882 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1546516264, now seen corresponding path program 9 times
[2021-10-28 23:11:39,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:39,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480679007]
[2021-10-28 23:11:39,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:39,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 20 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-28 23:11:44,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:44,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480679007]
[2021-10-28 23:11:44,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480679007] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:44,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99737798]
[2021-10-28 23:11:44,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-28 23:11:44,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:44,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:44,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:44,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2021-10-28 23:11:44,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-10-28 23:11:44,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:11:44,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core
[2021-10-28 23:11:44,699 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:44,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2021-10-28 23:11:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2021-10-28 23:11:44,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99737798] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:44,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:44,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9] total 21
[2021-10-28 23:11:44,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928193114]
[2021-10-28 23:11:44,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2021-10-28 23:11:44,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-10-28 23:11:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420
[2021-10-28 23:11:44,906 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:45,405 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions.
[2021-10-28 23:11:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-10-28 23:11:45,405 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39
[2021-10-28 23:11:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:45,406 INFO L225 Difference]: With dead ends: 47
[2021-10-28 23:11:45,406 INFO L226 Difference]: Without dead ends: 42
[2021-10-28 23:11:45,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650
[2021-10-28 23:11:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2021-10-28 23:11:45,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2021-10-28 23:11:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions.
[2021-10-28 23:11:45,412 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39
[2021-10-28 23:11:45,412 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:45,412 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions.
[2021-10-28 23:11:45,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions.
[2021-10-28 23:11:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2021-10-28 23:11:45,414 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:45,414 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:45,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2021-10-28 23:11:45,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2021-10-28 23:11:45,614 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:45,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1366350429, now seen corresponding path program 10 times
[2021-10-28 23:11:45,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:45,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063663789]
[2021-10-28 23:11:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:45,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 12 proven. 117 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-28 23:11:47,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:47,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063663789]
[2021-10-28 23:11:47,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063663789] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:47,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612951956]
[2021-10-28 23:11:47,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-10-28 23:11:47,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:47,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:47,509 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:47,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2021-10-28 23:11:47,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-28 23:11:47,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:11:47,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-10-28 23:11:47,702 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:11:47,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2021-10-28 23:11:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2021-10-28 23:11:47,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612951956] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:47,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:11:47,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10] total 25
[2021-10-28 23:11:47,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560728562]
[2021-10-28 23:11:47,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2021-10-28 23:11:47,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:11:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2021-10-28 23:11:47,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600
[2021-10-28 23:11:47,980 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 25 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:48,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:11:48,677 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions.
[2021-10-28 23:11:48,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-10-28 23:11:48,678 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41
[2021-10-28 23:11:48,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:11:48,678 INFO L225 Difference]: With dead ends: 51
[2021-10-28 23:11:48,678 INFO L226 Difference]: Without dead ends: 46
[2021-10-28 23:11:48,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056
[2021-10-28 23:11:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-10-28 23:11:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2021-10-28 23:11:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions.
[2021-10-28 23:11:48,685 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 41
[2021-10-28 23:11:48,685 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:11:48,685 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions.
[2021-10-28 23:11:48,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:11:48,686 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions.
[2021-10-28 23:11:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2021-10-28 23:11:48,687 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:11:48,687 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:11:48,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2021-10-28 23:11:48,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-10-28 23:11:48,906 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:11:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:11:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1237444007, now seen corresponding path program 11 times
[2021-10-28 23:11:48,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:11:48,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617161338]
[2021-10-28 23:11:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:11:48,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:11:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:11:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 12 proven. 143 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-28 23:11:50,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:11:50,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617161338]
[2021-10-28 23:11:50,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617161338] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:11:50,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685989989]
[2021-10-28 23:11:50,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-10-28 23:11:50,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:11:50,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:11:50,389 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:11:50,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2021-10-28 23:13:39,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s)
[2021-10-28 23:13:39,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:13:39,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 40 conjunts are in the unsatisfiable core
[2021-10-28 23:13:39,666 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:13:40,583 INFO L354 Elim1Store]: treesize reduction 15, result has 16.7 percent of original size
[2021-10-28 23:13:40,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 21
[2021-10-28 23:13:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-10-28 23:13:40,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685989989] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:13:40,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:13:40,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 40
[2021-10-28 23:13:40,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82503945]
[2021-10-28 23:13:40,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2021-10-28 23:13:40,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:13:40,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2021-10-28 23:13:40,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1343, Unknown=0, NotChecked=0, Total=1560
[2021-10-28 23:13:40,599 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 40 states, 40 states have (on average 1.975) internal successors, (79), 40 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:13:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:13:41,550 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions.
[2021-10-28 23:13:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-10-28 23:13:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 40 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45
[2021-10-28 23:13:41,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:13:41,552 INFO L225 Difference]: With dead ends: 53
[2021-10-28 23:13:41,552 INFO L226 Difference]: Without dead ends: 48
[2021-10-28 23:13:41,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=529, Invalid=2777, Unknown=0, NotChecked=0, Total=3306
[2021-10-28 23:13:41,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-10-28 23:13:41,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2021-10-28 23:13:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:13:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions.
[2021-10-28 23:13:41,559 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 45
[2021-10-28 23:13:41,560 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:13:41,560 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions.
[2021-10-28 23:13:41,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 40 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:13:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions.
[2021-10-28 23:13:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-10-28 23:13:41,561 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:13:41,561 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:13:41,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2021-10-28 23:13:41,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2021-10-28 23:13:41,762 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:13:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:13:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash 987545452, now seen corresponding path program 12 times
[2021-10-28 23:13:41,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:13:41,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993255746]
[2021-10-28 23:13:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:13:41,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:13:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:13:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2021-10-28 23:13:42,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:13:42,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993255746]
[2021-10-28 23:13:42,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993255746] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:13:42,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543383277]
[2021-10-28 23:13:42,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-10-28 23:13:42,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:13:42,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:13:42,654 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:13:42,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2021-10-28 23:14:07,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s)
[2021-10-28 23:14:07,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:14:07,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-10-28 23:14:07,144 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:14:07,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-10-28 23:14:07,262 INFO L354 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size
[2021-10-28 23:14:07,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24
[2021-10-28 23:14:07,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 4
[2021-10-28 23:14:07,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2021-10-28 23:14:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2021-10-28 23:14:07,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543383277] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:14:07,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:14:07,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 21
[2021-10-28 23:14:07,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948890794]
[2021-10-28 23:14:07,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2021-10-28 23:14:07,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:14:07,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-10-28 23:14:07,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420
[2021-10-28 23:14:07,441 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:14:07,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:14:07,979 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions.
[2021-10-28 23:14:07,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-10-28 23:14:07,980 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47
[2021-10-28 23:14:07,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:14:07,980 INFO L225 Difference]: With dead ends: 55
[2021-10-28 23:14:07,980 INFO L226 Difference]: Without dead ends: 50
[2021-10-28 23:14:07,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980
[2021-10-28 23:14:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2021-10-28 23:14:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2021-10-28 23:14:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:14:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions.
[2021-10-28 23:14:07,986 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 47
[2021-10-28 23:14:07,986 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:14:07,987 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions.
[2021-10-28 23:14:07,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:14:07,987 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions.
[2021-10-28 23:14:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2021-10-28 23:14:07,988 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:14:07,988 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:14:08,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2021-10-28 23:14:08,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2021-10-28 23:14:08,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:14:08,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:14:08,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1353202673, now seen corresponding path program 13 times
[2021-10-28 23:14:08,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:14:08,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832013338]
[2021-10-28 23:14:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:14:08,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:14:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:14:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2021-10-28 23:14:09,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:14:09,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832013338]
[2021-10-28 23:14:09,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832013338] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:14:09,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491946398]
[2021-10-28 23:14:09,140 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-10-28 23:14:09,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:14:09,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:14:09,142 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:14:09,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2021-10-28 23:14:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:14:09,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 42 conjunts are in the unsatisfiable core
[2021-10-28 23:14:09,468 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:14:10,378 INFO L354 Elim1Store]: treesize reduction 15, result has 16.7 percent of original size
[2021-10-28 23:14:10,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 21
[2021-10-28 23:14:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-10-28 23:14:10,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491946398] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:14:10,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:14:10,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23] total 40
[2021-10-28 23:14:10,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997372216]
[2021-10-28 23:14:10,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2021-10-28 23:14:10,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:14:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2021-10-28 23:14:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560
[2021-10-28 23:14:10,393 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 40 states, 40 states have (on average 2.0) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:14:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:14:11,348 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions.
[2021-10-28 23:14:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2021-10-28 23:14:11,349 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.0) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49
[2021-10-28 23:14:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:14:11,349 INFO L225 Difference]: With dead ends: 57
[2021-10-28 23:14:11,349 INFO L226 Difference]: Without dead ends: 52
[2021-10-28 23:14:11,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=723, Invalid=2937, Unknown=0, NotChecked=0, Total=3660
[2021-10-28 23:14:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2021-10-28 23:14:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2021-10-28 23:14:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:14:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions.
[2021-10-28 23:14:11,360 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 49
[2021-10-28 23:14:11,360 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:14:11,361 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions.
[2021-10-28 23:14:11,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.0) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:14:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions.
[2021-10-28 23:14:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-10-28 23:14:11,362 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:14:11,362 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:14:11,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2021-10-28 23:14:11,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:14:11,590 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:14:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:14:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash 562473782, now seen corresponding path program 14 times
[2021-10-28 23:14:11,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:14:11,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215189147]
[2021-10-28 23:14:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:14:11,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:14:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:14:11,663 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-28 23:14:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:14:11,828 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-28 23:14:11,828 INFO L627 BasicCegarLoop]: Counterexample is feasible
[2021-10-28 23:14:11,830 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 23:14:11,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2021-10-28 23:14:11,836 INFO L731 BasicCegarLoop]: Path program histogram: [14, 2, 1]
[2021-10-28 23:14:11,839 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-10-28 23:14:11,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:14:11 BoogieIcfgContainer
[2021-10-28 23:14:11,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-28 23:14:11,927 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-28 23:14:11,927 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-10-28 23:14:11,927 INFO L275 PluginConnector]: Witness Printer initialized
[2021-10-28 23:14:11,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:11:26" (3/4) ...
[2021-10-28 23:14:11,929 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-28 23:14:12,012 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/witness.graphml
[2021-10-28 23:14:12,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-28 23:14:12,014 INFO L168 Benchmark]: Toolchain (without parser) took 166128.63 ms. Allocated memory was 107.0 MB in the beginning and 237.0 MB in the end (delta: 130.0 MB). Free memory was 71.5 MB in the beginning and 186.1 MB in the end (delta: -114.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB.
[2021-10-28 23:14:12,014 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 80.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:14:12,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.78 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 81.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-28 23:14:12,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.83 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 79.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:14:12,015 INFO L168 Benchmark]: Boogie Preprocessor took 57.93 ms. Allocated memory is still 107.0 MB. Free memory was 79.9 MB in the beginning and 78.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:14:12,016 INFO L168 Benchmark]: RCFGBuilder took 382.94 ms. Allocated memory is still 107.0 MB. Free memory was 78.5 MB in the beginning and 67.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-28 23:14:12,016 INFO L168 Benchmark]: TraceAbstraction took 165128.49 ms. Allocated memory was 107.0 MB in the beginning and 237.0 MB in the end (delta: 130.0 MB). Free memory was 67.0 MB in the beginning and 191.3 MB in the end (delta: -124.3 MB). Peak memory consumption was 128.6 MB. Max. memory is 16.1 GB.
[2021-10-28 23:14:12,017 INFO L168 Benchmark]: Witness Printer took 86.24 ms. Allocated memory is still 237.0 MB. Free memory was 191.3 MB in the beginning and 186.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB.
[2021-10-28 23:14:12,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.66 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 80.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 394.78 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 81.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
* Boogie Procedure Inliner took 65.83 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 79.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* Boogie Preprocessor took 57.93 ms. Allocated memory is still 107.0 MB. Free memory was 79.9 MB in the beginning and 78.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* RCFGBuilder took 382.94 ms. Allocated memory is still 107.0 MB. Free memory was 78.5 MB in the beginning and 67.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 165128.49 ms. Allocated memory was 107.0 MB in the beginning and 237.0 MB in the end (delta: 130.0 MB). Free memory was 67.0 MB in the beginning and 191.3 MB in the end (delta: -124.3 MB). Peak memory consumption was 128.6 MB. Max. memory is 16.1 GB.
* Witness Printer took 86.24 ms. Allocated memory is still 237.0 MB. Free memory was 191.3 MB in the beginning and 186.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: 47]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L21] struct cont cont;
[L22] struct dummy array[10];
[L23] int i, *pa;
[L24] i = __VERIFIER_nondet_int()
[L26] int j = 0;
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND TRUE j < 10
[L27] array[j].a = __VERIFIER_nondet_int()
[L28] array[j].b = __VERIFIER_nondet_int()
[L26] j++
[L26] COND FALSE !(j < 10)
[L31] COND TRUE i >= 0 && i < 9
[L32] cont.array = &array[i]
[L33] EXPR cont.array
[L33] pa = &cont.array[0].b
[L34] EXPR cont.array
[L34] EXPR cont.array[0].b
[L34] COND TRUE cont.array[0].b > 0
[L35] EXPR array[i].b
[L35] i = array[i].b - 10
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND TRUE i < *pa
[L37] ++i
[L36] EXPR \read(*pa)
[L36] COND FALSE !(i < *pa)
[L16] EXPR pc->array
[L16] EXPR pc->array[1].b
[L16] return pc->array[1].b == i;
[L39] COND TRUE !check(&cont, i)
[L47] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 164.9s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 164 SDtfs, 176 SDslu, 578 SDs, 0 SdLazy, 2150 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 426 SyntacticMatches, 3 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2741 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=16, InterpolantAutomatonStates: 237, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 140.3s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 987 NumberOfCodeBlocks, 940 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 905 ConstructedInterpolants, 16 QuantifiedInterpolants, 6196 SizeOfPredicates, 98 NumberOfNonLiveVariables, 2406 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 31 InterpolantComputations, 2 PerfectInterpolantSequences, 642/2266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2021-10-28 23:14:12,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_245c7997-9257-43e4-9286-4208d3431b8b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...