./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007b.i --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_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/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_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/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_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/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 a5dbdf40c5c8abdf745ea2973f48a7f1bd1d56b53cd410b7a2d364d83fc651a9
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-b2eff8b
[2021-10-28 22:48:39,692 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-10-28 22:48:39,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-28 22:48:39,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-28 22:48:39,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-28 22:48:39,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-28 22:48:39,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-28 22:48:39,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-28 22:48:39,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-28 22:48:39,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-28 22:48:39,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-10-28 22:48:39,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-28 22:48:39,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-28 22:48:39,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-28 22:48:39,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-28 22:48:39,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-28 22:48:39,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-28 22:48:39,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-28 22:48:39,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-28 22:48:39,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-28 22:48:39,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-28 22:48:39,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-28 22:48:39,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-10-28 22:48:39,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-28 22:48:39,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-28 22:48:39,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-28 22:48:39,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-28 22:48:39,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-28 22:48:39,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-28 22:48:39,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-28 22:48:39,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-28 22:48:39,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-28 22:48:39,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-28 22:48:39,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-28 22:48:39,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-28 22:48:39,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-28 22:48:39,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-28 22:48:39,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-28 22:48:39,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-28 22:48:39,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-28 22:48:39,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-10-28 22:48:39,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-28 22:48:39,809 INFO L113 SettingsManager]: Loading preferences was successful
[2021-10-28 22:48:39,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-28 22:48:39,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-28 22:48:39,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-28 22:48:39,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-28 22:48:39,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-10-28 22:48:39,812 INFO L138 SettingsManager]: * Use SBE=true
[2021-10-28 22:48:39,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-28 22:48:39,813 INFO L138 SettingsManager]: * sizeof long=4
[2021-10-28 22:48:39,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-10-28 22:48:39,814 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-10-28 22:48:39,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-10-28 22:48:39,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-10-28 22:48:39,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-28 22:48:39,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-10-28 22:48:39,816 INFO L138 SettingsManager]: * sizeof long double=12
[2021-10-28 22:48:39,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-10-28 22:48:39,817 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-10-28 22:48:39,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-10-28 22:48:39,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-28 22:48:39,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-10-28 22:48:39,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-10-28 22:48:39,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 22:48:39,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-28 22:48:39,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-10-28 22:48:39,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-28 22:48:39,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-10-28 22:48:39,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-28 22:48:39,821 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-10-28 22:48:39,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-10-28 22:48:39,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-28 22:48:39,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-10-28 22:48:39,822 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_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5dbdf40c5c8abdf745ea2973f48a7f1bd1d56b53cd410b7a2d364d83fc651a9
[2021-10-28 22:48:40,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-28 22:48:40,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-28 22:48:40,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-28 22:48:40,086 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-10-28 22:48:40,087 INFO L275 PluginConnector]: CDTParser initialized
[2021-10-28 22:48:40,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-lit/gj2007b.i
[2021-10-28 22:48:40,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/data/ddc4c6750/35bc98fc6d354d67bd6cfc10eef44cbb/FLAGc37982a6e
[2021-10-28 22:48:40,650 INFO L306 CDTParser]: Found 1 translation units.
[2021-10-28 22:48:40,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/sv-benchmarks/c/loop-lit/gj2007b.i
[2021-10-28 22:48:40,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/data/ddc4c6750/35bc98fc6d354d67bd6cfc10eef44cbb/FLAGc37982a6e
[2021-10-28 22:48:41,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/data/ddc4c6750/35bc98fc6d354d67bd6cfc10eef44cbb
[2021-10-28 22:48:41,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-28 22:48:41,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-28 22:48:41,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-28 22:48:41,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-28 22:48:41,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-28 22:48:41,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400e275a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41, skipping insertion in model container
[2021-10-28 22:48:41,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-10-28 22:48:41,146 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-10-28 22:48:41,308 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_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/sv-benchmarks/c/loop-lit/gj2007b.i[895,908]
[2021-10-28 22:48:41,317 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-28 22:48:41,325 INFO L203 MainTranslator]: Completed pre-run
[2021-10-28 22:48:41,339 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_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/sv-benchmarks/c/loop-lit/gj2007b.i[895,908]
[2021-10-28 22:48:41,343 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-28 22:48:41,359 INFO L208 MainTranslator]: Completed translation
[2021-10-28 22:48:41,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41 WrapperNode
[2021-10-28 22:48:41,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-28 22:48:41,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-28 22:48:41,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-28 22:48:41,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-28 22:48:41,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-28 22:48:41,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-28 22:48:41,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-28 22:48:41,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-10-28 22:48:41,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-28 22:48:41,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-28 22:48:41,433 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-10-28 22:48:41,433 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-10-28 22:48:41,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ...
[2021-10-28 22:48:41,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 22:48:41,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 22:48:41,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-28 22:48:41,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-28 22:48:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-28 22:48:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-28 22:48:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-28 22:48:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-28 22:48:41,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-28 22:48:41,670 INFO L299 CfgBuilder]: Removed 9 assume(true) statements.
[2021-10-28 22:48:41,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:41 BoogieIcfgContainer
[2021-10-28 22:48:41,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-28 22:48:41,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-28 22:48:41,674 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-10-28 22:48:41,677 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-10-28 22:48:41,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:48:41" (1/3) ...
[2021-10-28 22:48:41,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd3a26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:41, skipping insertion in model container
[2021-10-28 22:48:41,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (2/3) ...
[2021-10-28 22:48:41,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd3a26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:41, skipping insertion in model container
[2021-10-28 22:48:41,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:41" (3/3) ...
[2021-10-28 22:48:41,681 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007b.i
[2021-10-28 22:48:41,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-28 22:48:41,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2021-10-28 22:48:41,732 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-28 22:48:41,739 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 22:48:41,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-10-28 22:48:41,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 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 22:48:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-10-28 22:48:41,758 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 22:48:41,759 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-10-28 22:48:41,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 22:48:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 22:48:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times
[2021-10-28 22:48:41,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 22:48:41,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101974651]
[2021-10-28 22:48:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 22:48:41,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 22:48:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 22:48:41,902 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 22:48:41,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 22:48:41,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101974651]
[2021-10-28 22:48:41,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101974651] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 22:48:41,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 22:48:41,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-28 22:48:41,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205670146]
[2021-10-28 22:48:41,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-10-28 22:48:41,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 22:48:41,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-10-28 22:48:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-28 22:48:41,929 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 22:48:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 22:48:41,944 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions.
[2021-10-28 22:48:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-10-28 22:48:41,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6
[2021-10-28 22:48:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 22:48:41,953 INFO L225 Difference]: With dead ends: 29
[2021-10-28 22:48:41,953 INFO L226 Difference]: Without dead ends: 13
[2021-10-28 22:48:41,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-28 22:48:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2021-10-28 22:48:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2021-10-28 22:48:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 22:48:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions.
[2021-10-28 22:48:42,002 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6
[2021-10-28 22:48:42,003 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 22:48:42,003 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions.
[2021-10-28 22:48:42,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 22:48:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions.
[2021-10-28 22:48:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-10-28 22:48:42,004 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 22:48:42,005 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-10-28 22:48:42,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-28 22:48:42,005 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 22:48:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 22:48:42,007 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times
[2021-10-28 22:48:42,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 22:48:42,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813542116]
[2021-10-28 22:48:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 22:48:42,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 22:48:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 22:48:42,121 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 22:48:42,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 22:48:42,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813542116]
[2021-10-28 22:48:42,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813542116] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 22:48:42,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 22:48:42,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-10-28 22:48:42,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125585572]
[2021-10-28 22:48:42,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-28 22:48:42,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 22:48:42,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-28 22:48:42,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 22:48:42,127 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 22:48:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 22:48:42,172 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions.
[2021-10-28 22:48:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-28 22:48:42,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6
[2021-10-28 22:48:42,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 22:48:42,174 INFO L225 Difference]: With dead ends: 24
[2021-10-28 22:48:42,174 INFO L226 Difference]: Without dead ends: 22
[2021-10-28 22:48:42,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-10-28 22:48:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2021-10-28 22:48:42,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18.
[2021-10-28 22:48:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.3125) internal successors, (21), 17 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 22:48:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions.
[2021-10-28 22:48:42,180 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 6
[2021-10-28 22:48:42,180 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 22:48:42,180 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions.
[2021-10-28 22:48:42,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 22:48:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions.
[2021-10-28 22:48:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-10-28 22:48:42,181 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 22:48:42,182 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 22:48:42,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-10-28 22:48:42,182 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 22:48:42,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 22:48:42,183 INFO L85 PathProgramCache]: Analyzing trace with hash 246459317, now seen corresponding path program 1 times
[2021-10-28 22:48:42,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 22:48:42,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207570755]
[2021-10-28 22:48:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 22:48:42,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 22:48:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 22:48:42,300 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 22:48:42,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 22:48:42,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207570755]
[2021-10-28 22:48:42,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207570755] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 22:48:42,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 22:48:42,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-10-28 22:48:42,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115177890]
[2021-10-28 22:48:42,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-28 22:48:42,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 22:48:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-28 22:48:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-10-28 22:48:42,304 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 22:48:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 22:48:42,400 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions.
[2021-10-28 22:48:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-28 22:48:42,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 8
[2021-10-28 22:48:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 22:48:42,402 INFO L225 Difference]: With dead ends: 28
[2021-10-28 22:48:42,402 INFO L226 Difference]: Without dead ends: 22
[2021-10-28 22:48:42,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-10-28 22:48:42,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2021-10-28 22:48:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19.
[2021-10-28 22:48:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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 22:48:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions.
[2021-10-28 22:48:42,411 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 8
[2021-10-28 22:48:42,411 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 22:48:42,412 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions.
[2021-10-28 22:48:42,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 22:48:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions.
[2021-10-28 22:48:42,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2021-10-28 22:48:42,413 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 22:48:42,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 22:48:42,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-10-28 22:48:42,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 22:48:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 22:48:42,416 INFO L85 PathProgramCache]: Analyzing trace with hash 584467323, now seen corresponding path program 1 times
[2021-10-28 22:48:42,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 22:48:42,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636596264]
[2021-10-28 22:48:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 22:48:42,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 22:48:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 22:48:42,512 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 22:48:42,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 22:48:42,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636596264]
[2021-10-28 22:48:42,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636596264] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 22:48:42,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258127514]
[2021-10-28 22:48:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 22:48:42,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 22:48:42,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 22:48:42,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 22:48:42,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-10-28 22:48:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 22:48:42,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-10-28 22:48:42,577 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 22:48:42,722 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 22:48:42,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258127514] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 22:48:42,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 22:48:42,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2021-10-28 22:48:42,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52571009]
[2021-10-28 22:48:42,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-10-28 22:48:42,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 22:48:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-28 22:48:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2021-10-28 22:48:42,727 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 22:48:42,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 22:48:42,796 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions.
[2021-10-28 22:48:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-28 22:48:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 9
[2021-10-28 22:48:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 22:48:42,799 INFO L225 Difference]: With dead ends: 22
[2021-10-28 22:48:42,800 INFO L226 Difference]: Without dead ends: 20
[2021-10-28 22:48:42,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2021-10-28 22:48:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2021-10-28 22:48:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 12.
[2021-10-28 22:48:42,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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 22:48:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions.
[2021-10-28 22:48:42,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9
[2021-10-28 22:48:42,812 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 22:48:42,812 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions.
[2021-10-28 22:48:42,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 22:48:42,813 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions.
[2021-10-28 22:48:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-28 22:48:42,814 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 22:48:42,815 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 22:48:42,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-10-28 22:48:43,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 22:48:43,041 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 22:48:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 22:48:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1776809124, now seen corresponding path program 1 times
[2021-10-28 22:48:43,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 22:48:43,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160188025]
[2021-10-28 22:48:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 22:48:43,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 22:48:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 22:48:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-28 22:48:43,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 22:48:43,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160188025]
[2021-10-28 22:48:43,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160188025] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 22:48:43,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 22:48:43,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-10-28 22:48:43,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134929023]
[2021-10-28 22:48:43,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-28 22:48:43,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 22:48:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-28 22:48:43,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 22:48:43,094 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 22:48:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 22:48:43,113 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions.
[2021-10-28 22:48:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-28 22:48:43,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11
[2021-10-28 22:48:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 22:48:43,114 INFO L225 Difference]: With dead ends: 21
[2021-10-28 22:48:43,114 INFO L226 Difference]: Without dead ends: 15
[2021-10-28 22:48:43,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-10-28 22:48:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2021-10-28 22:48:43,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14.
[2021-10-28 22:48:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 22:48:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions.
[2021-10-28 22:48:43,119 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11
[2021-10-28 22:48:43,119 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 22:48:43,119 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions.
[2021-10-28 22:48:43,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 22:48:43,119 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions.
[2021-10-28 22:48:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-28 22:48:43,120 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 22:48:43,120 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 22:48:43,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-10-28 22:48:43,120 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 22:48:43,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 22:48:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash -967462498, now seen corresponding path program 1 times
[2021-10-28 22:48:43,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 22:48:43,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656354533]
[2021-10-28 22:48:43,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 22:48:43,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 22:48:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 22:48:43,181 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 22:48:43,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 22:48:43,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656354533]
[2021-10-28 22:48:43,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656354533] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 22:48:43,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793549709]
[2021-10-28 22:48:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 22:48:43,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 22:48:43,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 22:48:43,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 22:48:43,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-28 22:48:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 22:48:43,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-10-28 22:48:43,236 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 22:48:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 22:48:43,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793549709] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 22:48:43,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-10-28 22:48:43,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2021-10-28 22:48:43,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151914122]
[2021-10-28 22:48:43,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-28 22:48:43,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 22:48:43,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-28 22:48:43,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2021-10-28 22:48:43,339 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 22:48:43,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 22:48:43,392 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions.
[2021-10-28 22:48:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-28 22:48:43,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11
[2021-10-28 22:48:43,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 22:48:43,393 INFO L225 Difference]: With dead ends: 14
[2021-10-28 22:48:43,393 INFO L226 Difference]: Without dead ends: 0
[2021-10-28 22:48:43,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2021-10-28 22:48:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-10-28 22:48:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-10-28 22:48:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 22:48:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-10-28 22:48:43,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11
[2021-10-28 22:48:43,395 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 22:48:43,395 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-10-28 22:48:43,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 22:48:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-10-28 22:48:43,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-10-28 22:48:43,398 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 22:48:43,399 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 22:48:43,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-28 22:48:43,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 22:48:43,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-10-28 22:48:43,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-28 22:48:43,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-28 22:48:43,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-28 22:48:43,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-28 22:48:43,757 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-10-28 22:48:43,757 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 31) no Hoare annotation was computed.
[2021-10-28 22:48:43,757 INFO L857 garLoopResultBuilder]: For program point L29-2(lines 29 31) no Hoare annotation was computed.
[2021-10-28 22:48:43,758 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed.
[2021-10-28 22:48:43,758 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed.
[2021-10-28 22:48:43,758 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed.
[2021-10-28 22:48:43,758 INFO L860 garLoopResultBuilder]: At program point L36(lines 24 37) the Hoare annotation is: true
[2021-10-28 22:48:43,758 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-10-28 22:48:43,758 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-10-28 22:48:43,759 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-10-28 22:48:43,759 INFO L853 garLoopResultBuilder]: At program point L28-2(lines 28 33) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~x~0))) (or (and (<= 0 ULTIMATE.start_main_~m~0) (< ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~n~0) .cse0) (and (= ULTIMATE.start_main_~m~0 0) .cse0)))
[2021-10-28 22:48:43,759 INFO L857 garLoopResultBuilder]: For program point L28-3(lines 28 33) no Hoare annotation was computed.
[2021-10-28 22:48:43,760 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed.
[2021-10-28 22:48:43,760 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed.
[2021-10-28 22:48:43,760 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~x~0))) (or (and (= ULTIMATE.start_main_~x~0 0) (<= ULTIMATE.start_main_~n~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (and .cse0 (= ULTIMATE.start_main_~m~0 0) .cse1) (and (<= 0 ULTIMATE.start_main_~m~0) .cse0 (< ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~n~0) .cse1)))
[2021-10-28 22:48:43,760 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed.
[2021-10-28 22:48:43,761 INFO L860 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: true
[2021-10-28 22:48:43,764 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2021-10-28 22:48:43,765 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-10-28 22:48:43,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:48:43 BoogieIcfgContainer
[2021-10-28 22:48:43,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-28 22:48:43,786 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-28 22:48:43,786 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-10-28 22:48:43,786 INFO L275 PluginConnector]: Witness Printer initialized
[2021-10-28 22:48:43,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:41" (3/4) ...
[2021-10-28 22:48:43,791 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-10-28 22:48:43,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges
[2021-10-28 22:48:43,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2021-10-28 22:48:43,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-28 22:48:43,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-28 22:48:43,854 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/witness.graphml
[2021-10-28 22:48:43,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-28 22:48:43,856 INFO L168 Benchmark]: Toolchain (without parser) took 2732.50 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 66.6 MB in the beginning and 90.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB.
[2021-10-28 22:48:43,856 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 22:48:43,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.71 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 75.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-28 22:48:43,857 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.53 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 22:48:43,857 INFO L168 Benchmark]: Boogie Preprocessor took 33.46 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 73.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
[2021-10-28 22:48:43,858 INFO L168 Benchmark]: RCFGBuilder took 239.52 ms. Allocated memory is still 100.7 MB. Free memory was 73.0 MB in the beginning and 64.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-28 22:48:43,858 INFO L168 Benchmark]: TraceAbstraction took 2111.66 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 63.6 MB in the beginning and 92.8 MB in the end (delta: -29.2 MB). Peak memory consumption was 417.6 kB. Max. memory is 16.1 GB.
[2021-10-28 22:48:43,859 INFO L168 Benchmark]: Witness Printer took 68.16 ms. Allocated memory is still 127.9 MB. Free memory was 92.8 MB in the beginning and 90.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 22:48:43,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 236.71 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 75.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
* Boogie Procedure Inliner took 36.53 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB.
* Boogie Preprocessor took 33.46 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 73.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
* RCFGBuilder took 239.52 ms. Allocated memory is still 100.7 MB. Free memory was 73.0 MB in the beginning and 64.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 2111.66 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 63.6 MB in the beginning and 92.8 MB in the end (delta: -29.2 MB). Peak memory consumption was 417.6 kB. Max. memory is 16.1 GB.
* Witness Printer took 68.16 ms. Allocated memory is still 127.9 MB. Free memory was 92.8 MB in the beginning and 90.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 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
- PositiveResult [Line: 19]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- PositiveResult [Line: 19]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 37 SDslu, 76 SDs, 0 SdLazy, 102 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 55 HoareAnnotationTreeSize, 4 FomulaSimplifications, 90 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 174 SizeOfPredicates, 7 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 2/5 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
- AllSpecificationsHoldResult: All specifications hold
2 specifications checked. All of them hold
- InvariantResult [Line: 17]: Loop Invariant
Derived loop invariant: (((x == 0 && n <= 0) && !(0 == cond)) || ((1 <= cond && m == 0) && 0 <= x)) || (((0 <= m && 1 <= cond) && m < n) && 0 <= x)
- InvariantResult [Line: 17]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 28]: Loop Invariant
Derived loop invariant: ((0 <= m && m < n) && 0 <= x) || (m == 0 && 0 <= x)
- InvariantResult [Line: 24]: Loop Invariant
Derived loop invariant: 1
RESULT: Ultimate proved your program to be correct!
[2021-10-28 22:48:43,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec59f66-1ab1-46b6-8db3-9d5e05e64764/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...