./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/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_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/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_4c10672f-44a6-4d74-a3ea-81d96b3001be/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 d205b4d392fcf6603d2c7a58c20f30b20ad63dac227f46def37edd46d8cc7990
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:40:19,098 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:40:19,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:40:19,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:40:19,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:40:19,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:40:19,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:40:19,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:40:19,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:40:19,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:40:19,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:40:19,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:40:19,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:40:19,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:40:19,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:40:19,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:40:19,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:40:19,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:40:19,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:40:19,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:40:19,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:40:19,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:40:19,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:40:19,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:40:19,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:40:19,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:40:19,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:40:19,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:40:19,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:40:19,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:40:19,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:40:19,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:40:19,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:40:19,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:40:19,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:40:19,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:40:19,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:40:19,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:40:19,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:40:19,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:40:19,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:40:19,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 18:40:19,266 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:40:19,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:40:19,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:40:19,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:40:19,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:40:19,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:40:19,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:40:19,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:40:19,276 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:40:19,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:40:19,277 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:40:19,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:40:19,277 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:40:19,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:40:19,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:40:19,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:40:19,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:40:19,278 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:40:19,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:40:19,279 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:40:19,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:40:19,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:40:19,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:40:19,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:40:19,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:40:19,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:40:19,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:40:19,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:40:19,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:40:19,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:40:19,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:40:19,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:40:19,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:40:19,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:40:19,283 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_4c10672f-44a6-4d74-a3ea-81d96b3001be/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d205b4d392fcf6603d2c7a58c20f30b20ad63dac227f46def37edd46d8cc7990
[2021-11-13 18:40:19,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:40:19,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:40:19,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:40:19,664 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:40:19,665 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:40:19,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c
[2021-11-13 18:40:19,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/data/d177a31a7/6ab1f5ed392a45169f9f2fe89577f91b/FLAGd0ebbd084
[2021-11-13 18:40:20,245 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:40:20,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c
[2021-11-13 18:40:20,261 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/data/d177a31a7/6ab1f5ed392a45169f9f2fe89577f91b/FLAGd0ebbd084
[2021-11-13 18:40:20,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/data/d177a31a7/6ab1f5ed392a45169f9f2fe89577f91b
[2021-11-13 18:40:20,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:40:20,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:40:20,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:40:20,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:40:20,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:40:20,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53baeba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20, skipping insertion in model container
[2021-11-13 18:40:20,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:40:20,637 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:40:20,810 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_4c10672f-44a6-4d74-a3ea-81d96b3001be/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c[525,538]
[2021-11-13 18:40:20,843 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:40:20,852 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:40:20,865 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_4c10672f-44a6-4d74-a3ea-81d96b3001be/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c[525,538]
[2021-11-13 18:40:20,881 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:40:20,894 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:40:20,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20 WrapperNode
[2021-11-13 18:40:20,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:40:20,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:40:20,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:40:20,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:40:20,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:40:20,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:40:20,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:40:20,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:40:20,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:40:20,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:40:20,984 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:40:20,984 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:40:20,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (1/1) ...
[2021-11-13 18:40:20,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:40:21,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:40:21,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:40:21,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:40:21,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 18:40:21,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:40:21,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:40:21,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:40:21,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-13 18:40:21,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-13 18:40:21,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:40:21,394 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-11-13 18:40:21,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:40:21 BoogieIcfgContainer
[2021-11-13 18:40:21,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:40:21,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:40:21,398 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:40:21,401 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:40:21,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:40:20" (1/3) ...
[2021-11-13 18:40:21,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ad7dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:40:21, skipping insertion in model container
[2021-11-13 18:40:21,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:40:20" (2/3) ...
[2021-11-13 18:40:21,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ad7dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:40:21, skipping insertion in model container
[2021-11-13 18:40:21,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:40:21" (3/3) ...
[2021-11-13 18:40:21,404 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound1.c
[2021-11-13 18:40:21,410 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:40:21,410 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:40:21,487 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:40:21,495 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 18:40:21,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:40:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2021-11-13 18:40:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 18:40:21,521 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:40:21,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:40:21,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:40:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:40:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash -797370321, now seen corresponding path program 1 times
[2021-11-13 18:40:21,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:40:21,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510510792]
[2021-11-13 18:40:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:40:21,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:40:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:40:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:40:21,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:40:21,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510510792]
[2021-11-13 18:40:21,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510510792] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:40:21,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:40:21,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 18:40:21,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103309636]
[2021-11-13 18:40:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:40:21,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:40:21,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:40:21,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:40:21,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:40:21,783 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:40:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:40:21,820 INFO L93 Difference]: Finished difference Result 57 states and 97 transitions.
[2021-11-13 18:40:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:40:21,823 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2021-11-13 18:40:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:40:21,832 INFO L225 Difference]: With dead ends: 57
[2021-11-13 18:40:21,833 INFO L226 Difference]: Without dead ends: 26
[2021-11-13 18:40:21,839 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 18:40:21,846 INFO L933 BasicCegarLoop]: 42 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, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:40:21,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 18:40:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2021-11-13 18:40:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2021-11-13 18:40:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-13 18:40:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions.
[2021-11-13 18:40:21,920 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 38 transitions. Word has length 10
[2021-11-13 18:40:21,920 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:40:21,920 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 38 transitions.
[2021-11-13 18:40:21,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:40:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions.
[2021-11-13 18:40:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-11-13 18:40:21,923 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:40:21,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:40:21,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:40:21,925 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:40:21,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:40:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1698606518, now seen corresponding path program 1 times
[2021-11-13 18:40:21,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:40:21,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804702910]
[2021-11-13 18:40:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:40:21,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:40:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:40:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:40:22,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:40:22,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804702910]
[2021-11-13 18:40:22,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804702910] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:40:22,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:40:22,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:40:22,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693224739]
[2021-11-13 18:40:22,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:40:22,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:40:22,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:40:22,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:40:22,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:40:22,069 INFO L87 Difference]: Start difference. First operand 26 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:40:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:40:22,095 INFO L93 Difference]: Finished difference Result 47 states and 70 transitions.
[2021-11-13 18:40:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:40:22,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12
[2021-11-13 18:40:22,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:40:22,097 INFO L225 Difference]: With dead ends: 47
[2021-11-13 18:40:22,097 INFO L226 Difference]: Without dead ends: 28
[2021-11-13 18:40:22,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:40:22,100 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.36ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:40:22,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 9 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 11.36ms Time]
[2021-11-13 18:40:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2021-11-13 18:40:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2021-11-13 18:40:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-13 18:40:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2021-11-13 18:40:22,110 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 12
[2021-11-13 18:40:22,110 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:40:22,110 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2021-11-13 18:40:22,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:40:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2021-11-13 18:40:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 18:40:22,112 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:40:22,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:40:22,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 18:40:22,113 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:40:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:40:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 776097594, now seen corresponding path program 1 times
[2021-11-13 18:40:22,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:40:22,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665770663]
[2021-11-13 18:40:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:40:22,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:40:22,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:40:22,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254429616]
[2021-11-13 18:40:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:40:22,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:40:22,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:40:22,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:40:22,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 18:40:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:40:22,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-13 18:40:22,288 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:40:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:40:22,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:40:22,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:40:22,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665770663]
[2021-11-13 18:40:22,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:40:22,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254429616]
[2021-11-13 18:40:22,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254429616] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:40:22,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:40:22,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:40:22,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750919240]
[2021-11-13 18:40:22,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:40:22,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:40:22,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:40:22,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:40:22,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:40:22,413 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:40:22,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:40:22,786 INFO L93 Difference]: Finished difference Result 46 states and 67 transitions.
[2021-11-13 18:40:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:40:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2021-11-13 18:40:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:40:22,792 INFO L225 Difference]: With dead ends: 46
[2021-11-13 18:40:22,793 INFO L226 Difference]: Without dead ends: 43
[2021-11-13 18:40:22,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:40:22,795 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.50ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 339.14ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:40:22,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 137 Invalid, 36 Unknown, 0 Unchecked, 3.50ms Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 339.14ms Time]
[2021-11-13 18:40:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2021-11-13 18:40:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2021-11-13 18:40:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2021-11-13 18:40:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions.
[2021-11-13 18:40:22,809 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 63 transitions. Word has length 13
[2021-11-13 18:40:22,810 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:40:22,810 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 63 transitions.
[2021-11-13 18:40:22,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:40:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 63 transitions.
[2021-11-13 18:40:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 18:40:22,819 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:40:22,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:40:22,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:40:23,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:40:23,043 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:40:23,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:40:23,044 INFO L85 PathProgramCache]: Analyzing trace with hash 777587144, now seen corresponding path program 1 times
[2021-11-13 18:40:23,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:40:23,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711941361]
[2021-11-13 18:40:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:40:23,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:40:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:40:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:40:23,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:40:23,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711941361]
[2021-11-13 18:40:23,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711941361] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:40:23,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:40:23,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:40:23,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233144359]
[2021-11-13 18:40:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:40:23,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 18:40:23,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:40:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 18:40:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:40:23,170 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:40:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:40:23,295 INFO L93 Difference]: Finished difference Result 55 states and 74 transitions.
[2021-11-13 18:40:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:40:23,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2021-11-13 18:40:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:40:23,305 INFO L225 Difference]: With dead ends: 55
[2021-11-13 18:40:23,305 INFO L226 Difference]: Without dead ends: 21
[2021-11-13 18:40:23,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:40:23,308 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.34ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:40:23,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 33 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 110.34ms Time]
[2021-11-13 18:40:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2021-11-13 18:40:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2021-11-13 18:40:23,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:40:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2021-11-13 18:40:23,313 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13
[2021-11-13 18:40:23,313 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:40:23,313 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2021-11-13 18:40:23,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:40:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2021-11-13 18:40:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-11-13 18:40:23,314 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:40:23,314 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:40:23,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-13 18:40:23,314 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:40:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:40:23,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1294398873, now seen corresponding path program 1 times
[2021-11-13 18:40:23,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:40:23,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051433989]
[2021-11-13 18:40:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:40:23,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:40:23,343 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:40:23,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869399416]
[2021-11-13 18:40:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:40:23,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:40:23,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:40:23,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:40:23,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 18:40:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:40:23,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-13 18:40:23,434 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:40:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:40:23,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:40:23,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:40:23,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051433989]
[2021-11-13 18:40:23,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:40:23,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869399416]
[2021-11-13 18:40:23,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869399416] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:40:23,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:40:23,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:40:23,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877211389]
[2021-11-13 18:40:23,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:40:23,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:40:23,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:40:23,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:40:23,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:40:23,548 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:40:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:40:23,586 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions.
[2021-11-13 18:40:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:40:23,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18
[2021-11-13 18:40:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:40:23,587 INFO L225 Difference]: With dead ends: 21
[2021-11-13 18:40:23,587 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 18:40:23,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:40:23,589 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.18ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:40:23,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 13 Unknown, 0 Unchecked, 0.65ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 28.18ms Time]
[2021-11-13 18:40:23,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 18:40:23,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 18:40:23,591 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 18:40:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 18:40:23,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18
[2021-11-13 18:40:23,591 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:40:23,591 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 18:40:23,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:40:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 18:40:23,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 18:40:23,594 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 18:40:23,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:40:23,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:40:23,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-11-13 18:40:23,886 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed.
[2021-11-13 18:40:23,886 INFO L861 garLoopResultBuilder]: At program point L60(lines 20 61) the Hoare annotation is: true
[2021-11-13 18:40:23,887 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed.
[2021-11-13 18:40:23,887 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 20 61) no Hoare annotation was computed.
[2021-11-13 18:40:23,888 INFO L858 garLoopResultBuilder]: For program point L44(lines 38 56) no Hoare annotation was computed.
[2021-11-13 18:40:23,888 INFO L854 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: false
[2021-11-13 18:40:23,888 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-11-13 18:40:23,889 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-11-13 18:40:23,889 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-11-13 18:40:23,889 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))
[2021-11-13 18:40:23,889 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false
[2021-11-13 18:40:23,894 INFO L858 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed.
[2021-11-13 18:40:23,894 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-11-13 18:40:23,894 INFO L854 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0))
[2021-11-13 18:40:23,894 INFO L854 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: false
[2021-11-13 18:40:23,895 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed.
[2021-11-13 18:40:23,895 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 56) no Hoare annotation was computed.
[2021-11-13 18:40:23,895 INFO L854 garLoopResultBuilder]: At program point L38-2(lines 38 56) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))
[2021-11-13 18:40:23,895 INFO L858 garLoopResultBuilder]: For program point L30-1(lines 30 35) no Hoare annotation was computed.
[2021-11-13 18:40:23,895 INFO L854 garLoopResultBuilder]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 .cse1 (= ~counter~0 0) .cse2) (and .cse0 .cse1 (<= 1 ~counter~0) .cse2)))
[2021-11-13 18:40:23,896 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed.
[2021-11-13 18:40:23,896 INFO L854 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: false
[2021-11-13 18:40:23,896 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: false
[2021-11-13 18:40:23,896 INFO L854 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: false
[2021-11-13 18:40:23,896 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true
[2021-11-13 18:40:23,901 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed.
[2021-11-13 18:40:23,901 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed.
[2021-11-13 18:40:23,901 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed.
[2021-11-13 18:40:23,901 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed.
[2021-11-13 18:40:23,902 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed.
[2021-11-13 18:40:23,905 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2021-11-13 18:40:23,907 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:40:23,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:40:23 BoogieIcfgContainer
[2021-11-13 18:40:23,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 18:40:23,924 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 18:40:23,924 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 18:40:23,925 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 18:40:23,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:40:21" (3/4) ...
[2021-11-13 18:40:23,928 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 18:40:23,936 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2021-11-13 18:40:23,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges
[2021-11-13 18:40:23,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2021-11-13 18:40:23,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 18:40:23,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-11-13 18:40:23,983 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 18:40:23,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 18:40:23,984 INFO L158 Benchmark]: Toolchain (without parser) took 3377.08ms. Allocated memory is still 113.2MB. Free memory was 71.8MB in the beginning and 43.8MB in the end (delta: 28.0MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB.
[2021-11-13 18:40:23,984 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 113.2MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:40:23,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.24ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 87.2MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 18:40:23,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.94ms. Allocated memory is still 113.2MB. Free memory was 87.2MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:40:23,985 INFO L158 Benchmark]: Boogie Preprocessor took 37.55ms. Allocated memory is still 113.2MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:40:23,986 INFO L158 Benchmark]: RCFGBuilder took 412.64ms. Allocated memory is still 113.2MB. Free memory was 84.2MB in the beginning and 72.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-11-13 18:40:23,986 INFO L158 Benchmark]: TraceAbstraction took 2526.34ms. Allocated memory is still 113.2MB. Free memory was 71.9MB in the beginning and 46.9MB in the end (delta: 25.0MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB.
[2021-11-13 18:40:23,986 INFO L158 Benchmark]: Witness Printer took 58.67ms. Allocated memory is still 113.2MB. Free memory was 46.9MB in the beginning and 43.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:40:23,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.40ms. Allocated memory is still 113.2MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 287.24ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 87.2MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 42.94ms. Allocated memory is still 113.2MB. Free memory was 87.2MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 37.55ms. Allocated memory is still 113.2MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 412.64ms. Allocated memory is still 113.2MB. Free memory was 84.2MB in the beginning and 72.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 2526.34ms. Allocated memory is still 113.2MB. Free memory was 71.9MB in the beginning and 46.9MB in the end (delta: 25.0MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB.
* Witness Printer took 58.67ms. Allocated memory is still 113.2MB. Free memory was 46.9MB in the beginning and 43.8MB in the end (delta: 3.1MB). 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: 14]: 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 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 489.02ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 376 SdHoareTripleChecker+Invalid, 432.35ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 228 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 148 mSDtfsCounter, 84 mSolverCounterSat, 10.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=3, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 49 PreInvPairs, 55 NumberOfFragments, 68 HoareAnnotationTreeSize, 49 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 179 SizeOfPredicates, 2 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 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: 20]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 30]: Loop Invariant
Derived loop invariant: (((p == 0 && h == 0) && counter == 0) && n == r) || (((p == 0 && h == 0) && 1 <= counter) && n == r)
RESULT: Ultimate proved your program to be correct!
[2021-11-13 18:40:24,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c10672f-44a6-4d74-a3ea-81d96b3001be/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