./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/half.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/half.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd8ea842760c1d795b2a0ad721eea8bf94078967bffa91c75f5537bf4a53b968
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:53:23,538 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:53:23,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:53:23,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:53:23,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:53:23,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:53:23,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:53:23,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:53:23,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:53:23,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:53:23,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:53:23,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:53:23,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:53:23,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:53:23,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:53:23,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:53:23,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:53:23,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:53:23,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:53:23,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:53:23,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:53:23,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:53:23,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:53:23,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:53:23,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:53:23,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:53:23,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:53:23,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:53:23,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:53:23,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:53:23,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:53:23,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:53:23,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:53:23,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:53:23,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:53:23,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:53:23,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:53:23,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:53:23,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:53:23,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:53:23,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:53:23,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 17:53:23,734 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:53:23,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:53:23,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:53:23,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:53:23,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:53:23,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:53:23,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:53:23,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:53:23,738 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:53:23,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:53:23,739 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 17:53:23,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 17:53:23,740 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 17:53:23,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:53:23,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:53:23,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:53:23,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:53:23,740 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 17:53:23,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:53:23,741 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:53:23,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:53:23,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:53:23,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:53:23,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:53:23,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:53:23,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:53:23,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:53:23,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:53:23,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 17:53:23,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 17:53:23,745 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:53:23,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:53:23,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:53:23,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:53:23,746 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_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8ea842760c1d795b2a0ad721eea8bf94078967bffa91c75f5537bf4a53b968
[2021-11-13 17:53:24,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:53:24,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:53:24,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:53:24,081 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:53:24,081 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:53:24,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/loop-new/half.i
[2021-11-13 17:53:24,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/data/1cb0c630f/8758862d309546f7bf28bc87bdd05278/FLAG734a98372
[2021-11-13 17:53:24,565 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:53:24,566 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/sv-benchmarks/c/loop-new/half.i
[2021-11-13 17:53:24,572 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/data/1cb0c630f/8758862d309546f7bf28bc87bdd05278/FLAG734a98372
[2021-11-13 17:53:24,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/data/1cb0c630f/8758862d309546f7bf28bc87bdd05278
[2021-11-13 17:53:24,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:53:24,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:53:24,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:53:24,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:53:24,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:53:24,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:53:24" (1/1) ...
[2021-11-13 17:53:24,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581dece7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:24, skipping insertion in model container
[2021-11-13 17:53:24,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:53:24" (1/1) ...
[2021-11-13 17:53:24,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:53:24,994 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:53:25,187 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_cda7dfcb-674e-4185-a0eb-df10e86d0b19/sv-benchmarks/c/loop-new/half.i[891,904]
[2021-11-13 17:53:25,198 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:53:25,207 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:53:25,219 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_cda7dfcb-674e-4185-a0eb-df10e86d0b19/sv-benchmarks/c/loop-new/half.i[891,904]
[2021-11-13 17:53:25,223 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:53:25,236 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:53:25,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25 WrapperNode
[2021-11-13 17:53:25,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:53:25,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:53:25,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:53:25,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:53:25,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:53:25,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:53:25,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:53:25,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:53:25,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:53:25,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:53:25,290 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:53:25,291 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:53:25,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (1/1) ...
[2021-11-13 17:53:25,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:53:25,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:53:25,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:53:25,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:53:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 17:53:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:53:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:53:25,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:53:25,603 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:53:25,603 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 17:53:25,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:53:25 BoogieIcfgContainer
[2021-11-13 17:53:25,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:53:25,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:53:25,607 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:53:25,610 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:53:25,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:53:24" (1/3) ...
[2021-11-13 17:53:25,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a1faf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:53:25, skipping insertion in model container
[2021-11-13 17:53:25,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:25" (2/3) ...
[2021-11-13 17:53:25,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a1faf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:53:25, skipping insertion in model container
[2021-11-13 17:53:25,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:53:25" (3/3) ...
[2021-11-13 17:53:25,613 INFO L111 eAbstractionObserver]: Analyzing ICFG half.i
[2021-11-13 17:53:25,619 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:53:25,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:53:25,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:53:25,676 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 17:53:25,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:53:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:53:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:53:25,695 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:53:25,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:53:25,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:53:25,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:53:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1807274184, now seen corresponding path program 1 times
[2021-11-13 17:53:25,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:53:25,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756641215]
[2021-11-13 17:53:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:53:25,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:53:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:53:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:25,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:53:25,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756641215]
[2021-11-13 17:53:25,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756641215] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:53:25,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:53:25,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 17:53:25,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722205912]
[2021-11-13 17:53:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:53:25,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 17:53:25,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:53:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 17:53:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:53:25,957 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:53:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:53:25,980 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions.
[2021-11-13 17:53:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 17:53:25,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7
[2021-11-13 17:53:25,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:53:25,990 INFO L225 Difference]: With dead ends: 22
[2021-11-13 17:53:25,990 INFO L226 Difference]: Without dead ends: 10
[2021-11-13 17:53:25,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:53:26,000 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:53:26,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 17:53:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2021-11-13 17:53:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2021-11-13 17:53:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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)
[2021-11-13 17:53:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions.
[2021-11-13 17:53:26,035 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7
[2021-11-13 17:53:26,036 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:53:26,036 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions.
[2021-11-13 17:53:26,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:53:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions.
[2021-11-13 17:53:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:53:26,037 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:53:26,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:53:26,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 17:53:26,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:53:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:53:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1806946483, now seen corresponding path program 1 times
[2021-11-13 17:53:26,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:53:26,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288304504]
[2021-11-13 17:53:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:53:26,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:53:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:53:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:26,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:53:26,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288304504]
[2021-11-13 17:53:26,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288304504] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:53:26,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:53:26,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 17:53:26,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971349964]
[2021-11-13 17:53:26,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:53:26,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:53:26,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:53:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:53:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:53:26,298 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:53:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:53:26,443 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions.
[2021-11-13 17:53:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 17:53:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 7
[2021-11-13 17:53:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:53:26,446 INFO L225 Difference]: With dead ends: 22
[2021-11-13 17:53:26,446 INFO L226 Difference]: Without dead ends: 16
[2021-11-13 17:53:26,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2021-11-13 17:53:26,448 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.68ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:53:26,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 46 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 79.68ms Time]
[2021-11-13 17:53:26,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2021-11-13 17:53:26,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13.
[2021-11-13 17:53:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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)
[2021-11-13 17:53:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions.
[2021-11-13 17:53:26,463 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7
[2021-11-13 17:53:26,463 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:53:26,463 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions.
[2021-11-13 17:53:26,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:53:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions.
[2021-11-13 17:53:26,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 17:53:26,464 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:53:26,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:53:26,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 17:53:26,465 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:53:26,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:53:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash -838413826, now seen corresponding path program 1 times
[2021-11-13 17:53:26,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:53:26,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907541175]
[2021-11-13 17:53:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:53:26,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:53:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:53:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:26,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:53:26,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907541175]
[2021-11-13 17:53:26,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907541175] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:53:26,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502219552]
[2021-11-13 17:53:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:53:26,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:53:26,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:53:26,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:53:26,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 17:53:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:53:26,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-11-13 17:53:26,825 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:53:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:26,987 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:53:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:27,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502219552] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:53:27,085 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:53:27,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 12
[2021-11-13 17:53:27,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125901707]
[2021-11-13 17:53:27,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:53:27,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-11-13 17:53:27,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:53:27,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-11-13 17:53:27,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2021-11-13 17:53:27,096 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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)
[2021-11-13 17:53:27,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:53:27,250 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions.
[2021-11-13 17:53:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 17:53:27,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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 10
[2021-11-13 17:53:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:53:27,253 INFO L225 Difference]: With dead ends: 32
[2021-11-13 17:53:27,253 INFO L226 Difference]: Without dead ends: 22
[2021-11-13 17:53:27,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210
[2021-11-13 17:53:27,258 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.67ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:53:27,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 65 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 68.67ms Time]
[2021-11-13 17:53:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2021-11-13 17:53:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14.
[2021-11-13 17:53:27,270 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)
[2021-11-13 17:53:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions.
[2021-11-13 17:53:27,271 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10
[2021-11-13 17:53:27,271 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:53:27,271 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions.
[2021-11-13 17:53:27,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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)
[2021-11-13 17:53:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions.
[2021-11-13 17:53:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 17:53:27,272 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:53:27,272 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:53:27,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2021-11-13 17:53:27,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:53:27,498 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:53:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:53:27,498 INFO L85 PathProgramCache]: Analyzing trace with hash -355206639, now seen corresponding path program 1 times
[2021-11-13 17:53:27,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:53:27,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019546423]
[2021-11-13 17:53:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:53:27,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:53:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:53:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:27,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:53:27,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019546423]
[2021-11-13 17:53:27,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019546423] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:53:27,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945880951]
[2021-11-13 17:53:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:53:27,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:53:27,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:53:27,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:53:27,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 17:53:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:53:27,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-11-13 17:53:27,778 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:53:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:28,039 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:53:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:28,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945880951] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:53:28,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:53:28,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22
[2021-11-13 17:53:28,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808167042]
[2021-11-13 17:53:28,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:53:28,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2021-11-13 17:53:28,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:53:28,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-11-13 17:53:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462
[2021-11-13 17:53:28,467 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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)
[2021-11-13 17:53:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:53:29,379 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions.
[2021-11-13 17:53:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2021-11-13 17:53:29,380 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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 13
[2021-11-13 17:53:29,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:53:29,381 INFO L225 Difference]: With dead ends: 41
[2021-11-13 17:53:29,381 INFO L226 Difference]: Without dead ends: 28
[2021-11-13 17:53:29,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122
[2021-11-13 17:53:29,383 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.99ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:53:29,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 43 Invalid, 188 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [32 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 160.99ms Time]
[2021-11-13 17:53:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2021-11-13 17:53:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23.
[2021-11-13 17:53:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:53:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions.
[2021-11-13 17:53:29,389 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13
[2021-11-13 17:53:29,390 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:53:29,390 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions.
[2021-11-13 17:53:29,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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)
[2021-11-13 17:53:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions.
[2021-11-13 17:53:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-11-13 17:53:29,391 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:53:29,391 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:53:29,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:53:29,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:53:29,618 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:53:29,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:53:29,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1670059902, now seen corresponding path program 2 times
[2021-11-13 17:53:29,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:53:29,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233794059]
[2021-11-13 17:53:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:53:29,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:53:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:53:29,830 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-13 17:53:29,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:53:29,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233794059]
[2021-11-13 17:53:29,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233794059] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:53:29,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853138898]
[2021-11-13 17:53:29,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 17:53:29,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:53:29,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:53:29,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:53:29,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 17:53:29,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 17:53:29,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 17:53:29,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-11-13 17:53:29,878 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:53:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:30,186 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:53:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:53:31,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853138898] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:53:31,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:53:31,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 32
[2021-11-13 17:53:31,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498323159]
[2021-11-13 17:53:31,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:53:31,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2021-11-13 17:53:31,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:53:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-11-13 17:53:31,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992
[2021-11-13 17:53:31,063 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 32 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:53:31,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:53:31,359 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions.
[2021-11-13 17:53:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-11-13 17:53:31,359 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 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 22
[2021-11-13 17:53:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:53:31,360 INFO L225 Difference]: With dead ends: 36
[2021-11-13 17:53:31,360 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 17:53:31,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=1212, Unknown=0, NotChecked=0, Total=1482
[2021-11-13 17:53:31,362 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 37 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.71ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 151.83ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:53:31,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 20 Invalid, 228 Unknown, 0 Unchecked, 3.71ms Time], IncrementalHoareTripleChecker [42 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 151.83ms Time]
[2021-11-13 17:53:31,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 17:53:31,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 17:53:31,363 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)
[2021-11-13 17:53:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 17:53:31,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22
[2021-11-13 17:53:31,364 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:53:31,364 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 17:53:31,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:53:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 17:53:31,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 17:53:31,367 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 17:53:31,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 17:53:31,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:53:31,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-11-13 17:53:31,755 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-11-13 17:53:31,756 INFO L858 garLoopResultBuilder]: For program point L29-2(lines 29 33) no Hoare annotation was computed.
[2021-11-13 17:53:31,756 INFO L854 garLoopResultBuilder]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse9 (+ (div |ULTIMATE.start_main_~i~0#1| 2) 1)) (.cse8 (div (+ (- 2) (* |ULTIMATE.start_main_~i~0#1| (- 1))) (- 2)))) (let ((.cse6 (< .cse8 1)) (.cse7 (<= .cse8 .cse9)) (.cse4 (+ |ULTIMATE.start_main_~i~0#1| 1)) (.cse5 (* 2 |ULTIMATE.start_main_~k~0#1|))) (let ((.cse0 (* 2 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (or (< |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~n~0#1|) (< .cse4 .cse5))) (.cse2 (or (<= |ULTIMATE.start_main_~n~0#1| .cse9) .cse6 .cse7)) (.cse3 (or .cse6 .cse7 (<= .cse8 (+ |ULTIMATE.start_main_~n~0#1| 1))))) (or (and (<= |ULTIMATE.start_main_~i~0#1| .cse0) .cse1 .cse2 (<= .cse0 |ULTIMATE.start_main_~i~0#1|) .cse3) (and (<= .cse4 .cse0) (<= .cse0 .cse4) (< |ULTIMATE.start_main_~i~0#1| .cse5)) (and (= 3 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse2 .cse3)))))
[2021-11-13 17:53:31,756 INFO L858 garLoopResultBuilder]: For program point L29-4(lines 29 33) no Hoare annotation was computed.
[2021-11-13 17:53:31,756 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed.
[2021-11-13 17:53:31,756 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-11-13 17:53:31,756 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed.
[2021-11-13 17:53:31,757 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-11-13 17:53:31,757 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-11-13 17:53:31,757 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed.
[2021-11-13 17:53:31,757 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed.
[2021-11-13 17:53:31,757 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed.
[2021-11-13 17:53:31,757 INFO L861 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true
[2021-11-13 17:53:31,757 INFO L861 garLoopResultBuilder]: At program point L35(lines 24 36) the Hoare annotation is: true
[2021-11-13 17:53:31,760 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1]
[2021-11-13 17:53:31,763 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 17:53:31,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:53:31 BoogieIcfgContainer
[2021-11-13 17:53:31,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 17:53:31,810 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 17:53:31,811 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 17:53:31,812 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 17:53:31,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:53:25" (3/4) ...
[2021-11-13 17:53:31,815 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 17:53:31,825 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges
[2021-11-13 17:53:31,826 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2021-11-13 17:53:31,826 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 17:53:31,826 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-11-13 17:53:31,863 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 17:53:31,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 17:53:31,864 INFO L158 Benchmark]: Toolchain (without parser) took 6899.76ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 67.0MB in the beginning and 106.5MB in the end (delta: -39.5MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:53:31,868 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:53:31,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.36ms. Allocated memory is still 109.1MB. Free memory was 66.8MB in the beginning and 83.5MB in the end (delta: -16.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 17:53:31,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.59ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 81.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:53:31,869 INFO L158 Benchmark]: Boogie Preprocessor took 19.05ms. Allocated memory is still 109.1MB. Free memory was 81.8MB in the beginning and 81.0MB in the end (delta: 819.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:53:31,869 INFO L158 Benchmark]: RCFGBuilder took 314.62ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 71.8MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 17:53:31,870 INFO L158 Benchmark]: TraceAbstraction took 6203.34ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 71.3MB in the beginning and 108.5MB in the end (delta: -37.2MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB.
[2021-11-13 17:53:31,870 INFO L158 Benchmark]: Witness Printer took 53.12ms. Allocated memory is still 132.1MB. Free memory was 108.5MB in the beginning and 106.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:53:31,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 271.36ms. Allocated memory is still 109.1MB. Free memory was 66.8MB in the beginning and 83.5MB in the end (delta: -16.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 31.59ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 81.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 19.05ms. Allocated memory is still 109.1MB. Free memory was 81.8MB in the beginning and 81.0MB in the end (delta: 819.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 314.62ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 71.8MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 6203.34ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 71.3MB in the beginning and 108.5MB in the end (delta: -37.2MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB.
* Witness Printer took 53.12ms. Allocated memory is still 132.1MB. Free memory was 108.5MB in the beginning and 106.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 461.17ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 385.16ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 85 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 432 IncrementalHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 37 mSDtfsCounter, 432 mSolverCounterSat, 13.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, InterpolantAutomatonStates: 55, 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 194 HoareAnnotationTreeSize, 3 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 526 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 2109 SizeOfPredicates, 11 NumberOfNonLiveVariables, 176 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 2/123 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
1 specifications checked. All of them hold
- InvariantResult [Line: 29]: Loop Invariant
Derived loop invariant: (((((i <= 2 * n && ((k < 0 || k == n) || i + 1 < 2 * k)) && ((n <= i / 2 + 1 || (-2 + i * -1) / -2 < 1) || (-2 + i * -1) / -2 <= i / 2 + 1)) && 2 * n <= i) && (((-2 + i * -1) / -2 < 1 || (-2 + i * -1) / -2 <= i / 2 + 1) || (-2 + i * -1) / -2 <= n + 1)) || ((i + 1 <= 2 * n && 2 * n <= i + 1) && i < 2 * k)) || (((3 == i && ((k < 0 || k == n) || i + 1 < 2 * k)) && ((n <= i / 2 + 1 || (-2 + i * -1) / -2 < 1) || (-2 + i * -1) / -2 <= i / 2 + 1)) && (((-2 + i * -1) / -2 < 1 || (-2 + i * -1) / -2 <= i / 2 + 1) || (-2 + i * -1) / -2 <= n + 1))
- InvariantResult [Line: 17]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 24]: Loop Invariant
Derived loop invariant: 1
RESULT: Ultimate proved your program to be correct!
[2021-11-13 17:53:31,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda7dfcb-674e-4185-a0eb-df10e86d0b19/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE