./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 53f42b1a
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF --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 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-53f42b1
[2021-11-20 07:38:54,095 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-20 07:38:54,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-20 07:38:54,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-20 07:38:54,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-20 07:38:54,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-20 07:38:54,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-20 07:38:54,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-20 07:38:54,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-20 07:38:54,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-20 07:38:54,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-20 07:38:54,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-20 07:38:54,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-20 07:38:54,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-20 07:38:54,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-20 07:38:54,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-20 07:38:54,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-20 07:38:54,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-20 07:38:54,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-20 07:38:54,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-20 07:38:54,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-20 07:38:54,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-20 07:38:54,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-20 07:38:54,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-20 07:38:54,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-20 07:38:54,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-20 07:38:54,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-20 07:38:54,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-20 07:38:54,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-20 07:38:54,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-20 07:38:54,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-20 07:38:54,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-20 07:38:54,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-20 07:38:54,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-20 07:38:54,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-20 07:38:54,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-20 07:38:54,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-20 07:38:54,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-20 07:38:54,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-20 07:38:54,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-20 07:38:54,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-20 07:38:54,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-20 07:38:54,248 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-20 07:38:54,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-20 07:38:54,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-20 07:38:54,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-20 07:38:54,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-20 07:38:54,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-20 07:38:54,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-20 07:38:54,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-20 07:38:54,252 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-20 07:38:54,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-20 07:38:54,253 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-20 07:38:54,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-20 07:38:54,254 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-20 07:38:54,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-20 07:38:54,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-20 07:38:54,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-20 07:38:54,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-20 07:38:54,255 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-20 07:38:54,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-20 07:38:54,256 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-20 07:38:54,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-20 07:38:54,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-20 07:38:54,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-20 07:38:54,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-20 07:38:54,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 07:38:54,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-20 07:38:54,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-20 07:38:54,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-20 07:38:54,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-20 07:38:54,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-20 07:38:54,260 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-20 07:38:54,261 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-20 07:38:54,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-20 07:38:54,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-20 07:38:54,262 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_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9
[2021-11-20 07:38:54,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-20 07:38:54,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-20 07:38:54,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-20 07:38:54,625 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-20 07:38:54,626 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-20 07:38:54,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i
[2021-11-20 07:38:54,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data/07faff84f/7d1d201395ee44398a2a6edd37ac7a6a/FLAGaf36b2899
[2021-11-20 07:38:55,427 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-20 07:38:55,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i
[2021-11-20 07:38:55,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data/07faff84f/7d1d201395ee44398a2a6edd37ac7a6a/FLAGaf36b2899
[2021-11-20 07:38:55,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data/07faff84f/7d1d201395ee44398a2a6edd37ac7a6a
[2021-11-20 07:38:55,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-20 07:38:55,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-20 07:38:55,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-20 07:38:55,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-20 07:38:55,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-20 07:38:55,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:38:55" (1/1) ...
[2021-11-20 07:38:55,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b60516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:55, skipping insertion in model container
[2021-11-20 07:38:55,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:38:55" (1/1) ...
[2021-11-20 07:38:55,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-20 07:38:55,797 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-20 07:38:55,993 WARN L230 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_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237]
[2021-11-20 07:38:56,068 WARN L230 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_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861]
[2021-11-20 07:38:56,075 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-11-20 07:38:56,093 INFO L203 MainTranslator]: Completed pre-run
[2021-11-20 07:38:56,118 WARN L230 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_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237]
[2021-11-20 07:38:56,144 WARN L230 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_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861]
[2021-11-20 07:38:56,146 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-11-20 07:38:56,167 INFO L208 MainTranslator]: Completed translation
[2021-11-20 07:38:56,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56 WrapperNode
[2021-11-20 07:38:56,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-20 07:38:56,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-20 07:38:56,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-20 07:38:56,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-20 07:38:56,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,241 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 77
[2021-11-20 07:38:56,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-20 07:38:56,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-20 07:38:56,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-20 07:38:56,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-20 07:38:56,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-20 07:38:56,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-20 07:38:56,299 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-20 07:38:56,300 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-20 07:38:56,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (1/1) ...
[2021-11-20 07:38:56,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 07:38:56,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:38:56,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-20 07:38:56,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-20 07:38:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-20 07:38:56,410 INFO L130 BoogieDeclarations]: Found specification of procedure fp
[2021-11-20 07:38:56,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fp
[2021-11-20 07:38:56,410 INFO L130 BoogieDeclarations]: Found specification of procedure f
[2021-11-20 07:38:56,411 INFO L138 BoogieDeclarations]: Found implementation of procedure f
[2021-11-20 07:38:56,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-20 07:38:56,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-20 07:38:56,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-20 07:38:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-20 07:38:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-20 07:38:56,508 INFO L236 CfgBuilder]: Building ICFG
[2021-11-20 07:38:56,510 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-20 07:38:56,785 INFO L277 CfgBuilder]: Performing block encoding
[2021-11-20 07:38:56,794 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-20 07:38:56,794 INFO L301 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-20 07:38:56,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:38:56 BoogieIcfgContainer
[2021-11-20 07:38:56,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-20 07:38:56,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-20 07:38:56,799 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-20 07:38:56,815 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-20 07:38:56,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:38:55" (1/3) ...
[2021-11-20 07:38:56,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d5fa33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:38:56, skipping insertion in model container
[2021-11-20 07:38:56,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:56" (2/3) ...
[2021-11-20 07:38:56,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d5fa33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:38:56, skipping insertion in model container
[2021-11-20 07:38:56,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:38:56" (3/3) ...
[2021-11-20 07:38:56,819 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_5.i
[2021-11-20 07:38:56,826 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-20 07:38:56,826 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2021-11-20 07:38:56,921 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-20 07:38:56,938 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
[2021-11-20 07:38:56,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-11-20 07:38:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2021-11-20 07:38:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-11-20 07:38:56,975 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:38:56,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:38:56,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:38:56,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:38:56,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1780387208, now seen corresponding path program 1 times
[2021-11-20 07:38:56,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:38:56,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768791612]
[2021-11-20 07:38:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:38:56,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:38:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:38:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:38:57,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 07:38:57,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768791612]
[2021-11-20 07:38:57,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768791612] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:38:57,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:38:57,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 07:38:57,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162005963]
[2021-11-20 07:38:57,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 07:38:57,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 07:38:57,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 07:38:57,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 07:38:57,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:38:57,284 INFO L87 Difference]: Start difference. First operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2021-11-20 07:38:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:38:57,395 INFO L93 Difference]: Finished difference Result 97 states and 134 transitions.
[2021-11-20 07:38:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:38:57,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 11
[2021-11-20 07:38:57,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:38:57,411 INFO L225 Difference]: With dead ends: 97
[2021-11-20 07:38:57,411 INFO L226 Difference]: Without dead ends: 45
[2021-11-20 07:38:57,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:38:57,424 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 11 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:38:57,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 100 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 07:38:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2021-11-20 07:38:57,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41.
[2021-11-20 07:38:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 states have internal predecessors, (34), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-20 07:38:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions.
[2021-11-20 07:38:57,508 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 11
[2021-11-20 07:38:57,509 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:38:57,509 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions.
[2021-11-20 07:38:57,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2021-11-20 07:38:57,512 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions.
[2021-11-20 07:38:57,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-11-20 07:38:57,514 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:38:57,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:38:57,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-20 07:38:57,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:38:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:38:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash -5379846, now seen corresponding path program 1 times
[2021-11-20 07:38:57,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:38:57,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115676404]
[2021-11-20 07:38:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:38:57,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:38:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:38:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:38:57,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 07:38:57,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115676404]
[2021-11-20 07:38:57,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115676404] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:38:57,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:38:57,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 07:38:57,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422557472]
[2021-11-20 07:38:57,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 07:38:57,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 07:38:57,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 07:38:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 07:38:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:38:57,639 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2021-11-20 07:38:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:38:57,703 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions.
[2021-11-20 07:38:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:38:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 11
[2021-11-20 07:38:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:38:57,711 INFO L225 Difference]: With dead ends: 67
[2021-11-20 07:38:57,712 INFO L226 Difference]: Without dead ends: 50
[2021-11-20 07:38:57,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:38:57,715 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:38:57,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 82 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 07:38:57,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2021-11-20 07:38:57,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41.
[2021-11-20 07:38:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-20 07:38:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions.
[2021-11-20 07:38:57,761 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 11
[2021-11-20 07:38:57,762 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:38:57,762 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions.
[2021-11-20 07:38:57,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2021-11-20 07:38:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions.
[2021-11-20 07:38:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-11-20 07:38:57,764 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:38:57,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:38:57,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-20 07:38:57,764 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:38:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:38:57,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1714945339, now seen corresponding path program 1 times
[2021-11-20 07:38:57,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:38:57,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929256060]
[2021-11-20 07:38:57,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:38:57,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:38:57,796 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 07:38:57,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437736953]
[2021-11-20 07:38:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:38:57,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:38:57,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:38:57,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 07:38:57,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-20 07:38:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:38:57,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-11-20 07:38:57,905 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:38:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:38:58,137 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:38:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:38:58,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 07:38:58,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929256060]
[2021-11-20 07:38:58,275 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 07:38:58,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437736953]
[2021-11-20 07:38:58,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437736953] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:38:58,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:38:58,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2021-11-20 07:38:58,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511845422]
[2021-11-20 07:38:58,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:38:58,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:38:58,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 07:38:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:38:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:38:58,288 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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)
[2021-11-20 07:38:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:38:58,377 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions.
[2021-11-20 07:38:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:38:58,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 15
[2021-11-20 07:38:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:38:58,380 INFO L225 Difference]: With dead ends: 58
[2021-11-20 07:38:58,382 INFO L226 Difference]: Without dead ends: 45
[2021-11-20 07:38:58,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:38:58,385 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:38:58,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:38:58,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2021-11-20 07:38:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2021-11-20 07:38:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-20 07:38:58,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions.
[2021-11-20 07:38:58,408 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 15
[2021-11-20 07:38:58,409 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:38:58,409 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions.
[2021-11-20 07:38:58,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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)
[2021-11-20 07:38:58,410 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions.
[2021-11-20 07:38:58,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-11-20 07:38:58,412 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:38:58,413 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:38:58,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-20 07:38:58,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:38:58,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:38:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:38:58,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1992824063, now seen corresponding path program 1 times
[2021-11-20 07:38:58,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:38:58,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196506297]
[2021-11-20 07:38:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:38:58,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:38:58,657 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 07:38:58,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932580749]
[2021-11-20 07:38:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:38:58,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:38:58,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:38:58,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 07:38:58,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-20 07:38:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:38:58,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-20 07:38:58,724 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:38:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:38:59,021 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:38:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:38:59,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 07:38:59,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196506297]
[2021-11-20 07:38:59,133 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 07:38:59,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932580749]
[2021-11-20 07:38:59,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932580749] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:38:59,134 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:38:59,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2021-11-20 07:38:59,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710200176]
[2021-11-20 07:38:59,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:38:59,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-20 07:38:59,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 07:38:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-20 07:38:59,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2021-11-20 07:38:59,137 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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)
[2021-11-20 07:38:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:38:59,243 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions.
[2021-11-20 07:38:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-20 07:38:59,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 19
[2021-11-20 07:38:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:38:59,246 INFO L225 Difference]: With dead ends: 60
[2021-11-20 07:38:59,246 INFO L226 Difference]: Without dead ends: 47
[2021-11-20 07:38:59,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2021-11-20 07:38:59,249 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:38:59,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 265 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:38:59,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2021-11-20 07:38:59,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2021-11-20 07:38:59,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-20 07:38:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions.
[2021-11-20 07:38:59,263 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 19
[2021-11-20 07:38:59,264 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:38:59,264 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions.
[2021-11-20 07:38:59,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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)
[2021-11-20 07:38:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions.
[2021-11-20 07:38:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-11-20 07:38:59,266 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:38:59,266 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:38:59,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2021-11-20 07:38:59,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:38:59,486 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:38:59,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:38:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash -626272964, now seen corresponding path program 2 times
[2021-11-20 07:38:59,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:38:59,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174560252]
[2021-11-20 07:38:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:38:59,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:38:59,518 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 07:38:59,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366703360]
[2021-11-20 07:38:59,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 07:38:59,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:38:59,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:38:59,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 07:38:59,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-20 07:38:59,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-20 07:38:59,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:38:59,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-11-20 07:38:59,613 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:38:59,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:38:59,852 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:00,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 07:39:00,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174560252]
[2021-11-20 07:39:00,018 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 07:39:00,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366703360]
[2021-11-20 07:39:00,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366703360] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:39:00,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:39:00,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-11-20 07:39:00,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430958142]
[2021-11-20 07:39:00,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:39:00,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-11-20 07:39:00,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 07:39:00,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-11-20 07:39:00,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2021-11-20 07:39:00,022 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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)
[2021-11-20 07:39:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:39:00,219 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions.
[2021-11-20 07:39:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-20 07:39:00,221 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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 21
[2021-11-20 07:39:00,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:39:00,224 INFO L225 Difference]: With dead ends: 68
[2021-11-20 07:39:00,225 INFO L226 Difference]: Without dead ends: 53
[2021-11-20 07:39:00,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182
[2021-11-20 07:39:00,231 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:39:00,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 301 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:39:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2021-11-20 07:39:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2021-11-20 07:39:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-20 07:39:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions.
[2021-11-20 07:39:00,255 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 21
[2021-11-20 07:39:00,256 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:39:00,256 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions.
[2021-11-20 07:39:00,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 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)
[2021-11-20 07:39:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions.
[2021-11-20 07:39:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-11-20 07:39:00,259 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:00,260 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:00,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2021-11-20 07:39:00,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:39:00,477 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:00,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1120707465, now seen corresponding path program 3 times
[2021-11-20 07:39:00,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:39:00,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340384823]
[2021-11-20 07:39:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:00,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:39:00,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 07:39:00,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473374619]
[2021-11-20 07:39:00,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-20 07:39:00,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:39:00,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:39:00,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 07:39:00,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-20 07:39:00,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-11-20 07:39:00,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:39:00,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-11-20 07:39:00,579 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:39:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-20 07:39:00,919 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-20 07:39:01,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 07:39:01,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340384823]
[2021-11-20 07:39:01,644 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 07:39:01,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473374619]
[2021-11-20 07:39:01,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473374619] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:39:01,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:39:01,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-11-20 07:39:01,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801160085]
[2021-11-20 07:39:01,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:39:01,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-20 07:39:01,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 07:39:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-20 07:39:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306
[2021-11-20 07:39:01,648 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:39:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:39:02,484 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions.
[2021-11-20 07:39:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-11-20 07:39:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2021-11-20 07:39:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:39:02,487 INFO L225 Difference]: With dead ends: 81
[2021-11-20 07:39:02,488 INFO L226 Difference]: Without dead ends: 78
[2021-11-20 07:39:02,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702
[2021-11-20 07:39:02,490 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 41 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2021-11-20 07:39:02,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 524 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2021-11-20 07:39:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2021-11-20 07:39:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70.
[2021-11-20 07:39:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2021-11-20 07:39:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions.
[2021-11-20 07:39:02,505 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 23
[2021-11-20 07:39:02,506 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:39:02,506 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions.
[2021-11-20 07:39:02,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:39:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions.
[2021-11-20 07:39:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-11-20 07:39:02,509 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:02,509 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:02,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-20 07:39:02,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:39:02,733 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash 469106930, now seen corresponding path program 4 times
[2021-11-20 07:39:02,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:39:02,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734331674]
[2021-11-20 07:39:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:02,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:39:02,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 07:39:02,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929284926]
[2021-11-20 07:39:02,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-11-20 07:39:02,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:39:02,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:39:02,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 07:39:02,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-20 07:39:02,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-11-20 07:39:02,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:39:02,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core
[2021-11-20 07:39:02,824 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:39:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:03,168 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:03,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 07:39:03,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734331674]
[2021-11-20 07:39:03,470 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 07:39:03,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929284926]
[2021-11-20 07:39:03,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929284926] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:39:03,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:39:03,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2021-11-20 07:39:03,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27446856]
[2021-11-20 07:39:03,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:39:03,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2021-11-20 07:39:03,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 07:39:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-11-20 07:39:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240
[2021-11-20 07:39:03,474 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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)
[2021-11-20 07:39:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:39:03,768 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions.
[2021-11-20 07:39:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-20 07:39:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 25
[2021-11-20 07:39:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:39:03,773 INFO L225 Difference]: With dead ends: 94
[2021-11-20 07:39:03,773 INFO L226 Difference]: Without dead ends: 66
[2021-11-20 07:39:03,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420
[2021-11-20 07:39:03,776 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 37 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:39:03,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 375 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:39:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2021-11-20 07:39:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2021-11-20 07:39:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 52 states have internal predecessors, (55), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2021-11-20 07:39:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions.
[2021-11-20 07:39:03,791 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 25
[2021-11-20 07:39:03,791 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:39:03,792 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions.
[2021-11-20 07:39:03,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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)
[2021-11-20 07:39:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions.
[2021-11-20 07:39:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-11-20 07:39:03,795 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:03,795 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:03,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-20 07:39:04,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:39:04,017 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:04,017 INFO L85 PathProgramCache]: Analyzing trace with hash -985782289, now seen corresponding path program 5 times
[2021-11-20 07:39:04,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:39:04,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208584216]
[2021-11-20 07:39:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:04,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:39:04,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 07:39:04,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806019889]
[2021-11-20 07:39:04,043 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-11-20 07:39:04,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:39:04,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:39:04,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 07:39:04,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-20 07:39:04,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2021-11-20 07:39:04,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:39:04,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-11-20 07:39:04,147 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:39:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:04,629 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:08,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 07:39:08,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208584216]
[2021-11-20 07:39:08,536 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 07:39:08,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806019889]
[2021-11-20 07:39:08,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806019889] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:39:08,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:39:08,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2021-11-20 07:39:08,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745629464]
[2021-11-20 07:39:08,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:39:08,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-20 07:39:08,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 07:39:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-20 07:39:08,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=221, Unknown=1, NotChecked=0, Total=306
[2021-11-20 07:39:08,542 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 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)
[2021-11-20 07:39:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:39:08,676 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions.
[2021-11-20 07:39:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-20 07:39:08,677 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 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 27
[2021-11-20 07:39:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:39:08,679 INFO L225 Difference]: With dead ends: 76
[2021-11-20 07:39:08,679 INFO L226 Difference]: Without dead ends: 49
[2021-11-20 07:39:08,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=99, Invalid=242, Unknown=1, NotChecked=0, Total=342
[2021-11-20 07:39:08,682 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:39:08,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 354 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time]
[2021-11-20 07:39:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2021-11-20 07:39:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2021-11-20 07:39:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2021-11-20 07:39:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions.
[2021-11-20 07:39:08,706 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27
[2021-11-20 07:39:08,706 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:39:08,707 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions.
[2021-11-20 07:39:08,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 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)
[2021-11-20 07:39:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions.
[2021-11-20 07:39:08,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-11-20 07:39:08,713 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:08,713 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:08,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-20 07:39:08,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2021-11-20 07:39:08,924 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1781630816, now seen corresponding path program 1 times
[2021-11-20 07:39:08,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:39:08,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306823573]
[2021-11-20 07:39:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:08,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:39:08,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-20 07:39:08,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861378014]
[2021-11-20 07:39:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:08,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:39:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:39:08,971 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 07:39:08,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-11-20 07:39:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:39:09,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-11-20 07:39:09,039 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:39:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-20 07:39:09,391 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-20 07:39:10,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 07:39:10,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306823573]
[2021-11-20 07:39:10,505 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-11-20 07:39:10,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861378014]
[2021-11-20 07:39:10,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861378014] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:39:10,506 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:39:10,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16
[2021-11-20 07:39:10,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734567897]
[2021-11-20 07:39:10,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:39:10,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2021-11-20 07:39:10,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 07:39:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-11-20 07:39:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240
[2021-11-20 07:39:10,508 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-20 07:39:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:39:11,524 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions.
[2021-11-20 07:39:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-11-20 07:39:11,525 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28
[2021-11-20 07:39:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:39:11,525 INFO L225 Difference]: With dead ends: 49
[2021-11-20 07:39:11,525 INFO L226 Difference]: Without dead ends: 23
[2021-11-20 07:39:11,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420
[2021-11-20 07:39:11,527 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2021-11-20 07:39:11,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 379 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2021-11-20 07:39:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-11-20 07:39:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2021-11-20 07:39:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-11-20 07:39:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions.
[2021-11-20 07:39:11,532 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 28
[2021-11-20 07:39:11,532 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:39:11,532 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions.
[2021-11-20 07:39:11,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-20 07:39:11,533 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions.
[2021-11-20 07:39:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-11-20 07:39:11,534 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:11,535 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:11,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-11-20 07:39:11,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2021-11-20 07:39:11,749 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:11,750 INFO L85 PathProgramCache]: Analyzing trace with hash -21288017, now seen corresponding path program 1 times
[2021-11-20 07:39:11,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 07:39:11,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306911444]
[2021-11-20 07:39:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:11,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 07:39:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-20 07:39:11,789 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-20 07:39:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-20 07:39:11,853 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-11-20 07:39:11,853 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-20 07:39:11,854 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining)
[2021-11-20 07:39:11,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2021-11-20 07:39:11,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-11-20 07:39:11,863 INFO L732 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1]
[2021-11-20 07:39:11,867 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-20 07:39:11,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:39:11 BoogieIcfgContainer
[2021-11-20 07:39:11,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-20 07:39:11,908 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-20 07:39:11,908 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-20 07:39:11,909 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-20 07:39:11,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:38:56" (3/4) ...
[2021-11-20 07:39:11,914 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2021-11-20 07:39:11,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-20 07:39:11,916 INFO L158 Benchmark]: Toolchain (without parser) took 16161.97ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 69.5MB in the beginning and 74.9MB in the end (delta: -5.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB.
[2021-11-20 07:39:11,916 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 109.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-20 07:39:11,917 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.25ms. Allocated memory is still 109.1MB. Free memory was 69.3MB in the beginning and 82.4MB in the end (delta: -13.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-20 07:39:11,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.67ms. Allocated memory is still 109.1MB. Free memory was 82.4MB in the beginning and 80.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-20 07:39:11,918 INFO L158 Benchmark]: Boogie Preprocessor took 54.30ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 79.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-20 07:39:11,919 INFO L158 Benchmark]: RCFGBuilder took 498.01ms. Allocated memory is still 109.1MB. Free memory was 79.4MB in the beginning and 68.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-11-20 07:39:11,919 INFO L158 Benchmark]: TraceAbstraction took 15108.86ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 67.7MB in the beginning and 75.9MB in the end (delta: -8.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
[2021-11-20 07:39:11,920 INFO L158 Benchmark]: Witness Printer took 6.58ms. Allocated memory is still 136.3MB. Free memory was 75.9MB in the beginning and 74.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-20 07:39:11,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.38ms. Allocated memory is still 109.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 413.25ms. Allocated memory is still 109.1MB. Free memory was 69.3MB in the beginning and 82.4MB in the end (delta: -13.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 72.67ms. Allocated memory is still 109.1MB. Free memory was 82.4MB in the beginning and 80.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 54.30ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 79.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 498.01ms. Allocated memory is still 109.1MB. Free memory was 79.4MB in the beginning and 68.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 15108.86ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 67.7MB in the beginning and 75.9MB in the end (delta: -8.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
* Witness Printer took 6.58ms. Allocated memory is still 136.3MB. Free memory was 75.9MB in the beginning and 74.9MB in the end (delta: 1.0MB). There was no memory consumed. 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
- UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 104.
Possible FailurePath:
[L115] COND FALSE !(__VERIFIER_nondet_int())
[L118] CALL main2()
[L97] float IN = __VERIFIER_nondet_float();
[L98] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f)
[L82] COND FALSE !(!cond)
VAL [\old(cond)=1, cond=1]
[L98] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f)
[L100] CALL, EXPR f(IN)
VAL [\old(x)=57]
[L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f;
VAL [\old(x)=57, x=57]
[L100] RET, EXPR f(IN)
VAL [f(IN)=49, IN=57]
[L100] CALL, EXPR fp(IN)
VAL [\old(x)=57]
[L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f;
VAL [\old(x)=57, x=57]
[L100] RET, EXPR fp(IN)
VAL [f(IN)=49, fp(IN)=50, IN=57]
[L100] float x = IN - f(IN)/fp(IN);
[L102] CALL, EXPR f(x)
VAL [\old(x)=52]
[L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f;
VAL [\old(x)=52, x=52]
[L102] RET, EXPR f(x)
VAL [f(x)=51, IN=57, x=52]
[L102] CALL, EXPR fp(x)
VAL [\old(x)=52]
[L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f;
VAL [\old(x)=52, x=52]
[L102] RET, EXPR fp(x)
VAL [f(x)=51, fp(x)=53, IN=57, x=52]
[L102] x = x - f(x)/fp(x)
[L104] CALL, EXPR f(x)
VAL [\old(x)=55]
[L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f;
VAL [\old(x)=55, x=55]
[L104] RET, EXPR f(x)
VAL [f(x)=54, IN=57, x=55]
[L104] CALL, EXPR fp(x)
VAL [\old(x)=55]
[L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f;
VAL [\old(x)=55, x=55]
[L104] RET, EXPR fp(x)
VAL [f(x)=54, fp(x)=56, IN=57, x=55]
[L104] x = x - f(x)/fp(x)
[L108] COND TRUE !(x < 0.1)
VAL [IN=57]
[L109] reach_error()
VAL [IN=57]
- UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 14.9s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 2571 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 25 IncrementalHoareTripleChecker+Unchecked, 2202 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 840 IncrementalHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 369 mSDtfsCounter, 840 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=6, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 214 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 322 ConstructedInterpolants, 10 QuantifiedInterpolants, 2071 SizeOfPredicates, 45 NumberOfNonLiveVariables, 545 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 56/326 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2021-11-20 07:39:11,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF --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 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-53f42b1
[2021-11-20 07:39:15,493 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-20 07:39:15,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-20 07:39:15,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-20 07:39:15,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-20 07:39:15,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-20 07:39:15,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-20 07:39:15,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-20 07:39:15,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-20 07:39:15,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-20 07:39:15,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-20 07:39:15,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-20 07:39:15,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-20 07:39:15,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-20 07:39:15,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-20 07:39:15,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-20 07:39:15,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-20 07:39:15,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-20 07:39:15,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-20 07:39:15,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-20 07:39:15,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-20 07:39:15,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-20 07:39:15,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-20 07:39:15,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-20 07:39:15,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-20 07:39:15,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-20 07:39:15,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-20 07:39:15,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-20 07:39:15,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-20 07:39:15,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-20 07:39:15,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-20 07:39:15,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-20 07:39:15,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-20 07:39:15,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-20 07:39:15,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-20 07:39:15,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-20 07:39:15,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-20 07:39:15,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-20 07:39:15,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-20 07:39:15,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-20 07:39:15,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-20 07:39:15,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2021-11-20 07:39:15,706 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-20 07:39:15,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-20 07:39:15,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-20 07:39:15,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-20 07:39:15,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-20 07:39:15,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-20 07:39:15,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-20 07:39:15,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-20 07:39:15,710 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-20 07:39:15,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-20 07:39:15,711 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-20 07:39:15,711 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-20 07:39:15,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-20 07:39:15,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-20 07:39:15,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-20 07:39:15,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-20 07:39:15,713 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2021-11-20 07:39:15,713 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2021-11-20 07:39:15,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2021-11-20 07:39:15,714 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-20 07:39:15,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-20 07:39:15,715 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-20 07:39:15,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-20 07:39:15,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-20 07:39:15,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-20 07:39:15,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-20 07:39:15,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 07:39:15,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-20 07:39:15,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-20 07:39:15,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-20 07:39:15,717 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2021-11-20 07:39:15,718 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2021-11-20 07:39:15,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-20 07:39:15,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-20 07:39:15,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-20 07:39:15,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-20 07:39:15,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2021-11-20 07:39:15,720 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9
[2021-11-20 07:39:16,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-20 07:39:16,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-20 07:39:16,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-20 07:39:16,232 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-20 07:39:16,233 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-20 07:39:16,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i
[2021-11-20 07:39:16,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data/b0ceae7f0/831899129c4c441fae5f11394451e383/FLAG7539b26c8
[2021-11-20 07:39:16,998 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-20 07:39:16,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i
[2021-11-20 07:39:17,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data/b0ceae7f0/831899129c4c441fae5f11394451e383/FLAG7539b26c8
[2021-11-20 07:39:17,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/data/b0ceae7f0/831899129c4c441fae5f11394451e383
[2021-11-20 07:39:17,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-20 07:39:17,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-20 07:39:17,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-20 07:39:17,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-20 07:39:17,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-20 07:39:17,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a694c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17, skipping insertion in model container
[2021-11-20 07:39:17,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-20 07:39:17,400 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-20 07:39:17,583 WARN L230 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_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237]
[2021-11-20 07:39:17,620 WARN L230 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_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861]
[2021-11-20 07:39:17,622 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-11-20 07:39:17,639 INFO L203 MainTranslator]: Completed pre-run
[2021-11-20 07:39:17,674 WARN L230 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_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237]
[2021-11-20 07:39:17,726 WARN L230 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_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861]
[2021-11-20 07:39:17,727 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-11-20 07:39:17,747 INFO L208 MainTranslator]: Completed translation
[2021-11-20 07:39:17,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17 WrapperNode
[2021-11-20 07:39:17,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-20 07:39:17,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-20 07:39:17,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-20 07:39:17,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-20 07:39:17,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,800 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74
[2021-11-20 07:39:17,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-20 07:39:17,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-20 07:39:17,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-20 07:39:17,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-20 07:39:17,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-20 07:39:17,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-20 07:39:17,903 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-20 07:39:17,904 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-20 07:39:17,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (1/1) ...
[2021-11-20 07:39:17,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 07:39:17,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:39:17,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-20 07:39:17,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-20 07:39:18,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-20 07:39:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2021-11-20 07:39:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure fp
[2021-11-20 07:39:18,001 INFO L138 BoogieDeclarations]: Found implementation of procedure fp
[2021-11-20 07:39:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure f
[2021-11-20 07:39:18,002 INFO L138 BoogieDeclarations]: Found implementation of procedure f
[2021-11-20 07:39:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-20 07:39:18,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-20 07:39:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-20 07:39:18,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-20 07:39:18,140 INFO L236 CfgBuilder]: Building ICFG
[2021-11-20 07:39:18,142 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-20 07:39:27,107 INFO L277 CfgBuilder]: Performing block encoding
[2021-11-20 07:39:27,120 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-20 07:39:27,121 INFO L301 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-20 07:39:27,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:39:27 BoogieIcfgContainer
[2021-11-20 07:39:27,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-20 07:39:27,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-20 07:39:27,127 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-20 07:39:27,132 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-20 07:39:27,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:39:17" (1/3) ...
[2021-11-20 07:39:27,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec16709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:39:27, skipping insertion in model container
[2021-11-20 07:39:27,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:39:17" (2/3) ...
[2021-11-20 07:39:27,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec16709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:39:27, skipping insertion in model container
[2021-11-20 07:39:27,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:39:27" (3/3) ...
[2021-11-20 07:39:27,138 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_5.i
[2021-11-20 07:39:27,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-20 07:39:27,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2021-11-20 07:39:27,207 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-20 07:39:27,217 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
[2021-11-20 07:39:27,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-11-20 07:39:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2021-11-20 07:39:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-11-20 07:39:27,262 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:27,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:27,264 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:27,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1780387208, now seen corresponding path program 1 times
[2021-11-20 07:39:27,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:39:27,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498480387]
[2021-11-20 07:39:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:27,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:39:27,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:39:27,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:39:27,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2021-11-20 07:39:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:39:27,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-20 07:39:27,508 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:39:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:27,765 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:27,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:39:27,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498480387]
[2021-11-20 07:39:27,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498480387] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:39:27,982 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:39:27,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2021-11-20 07:39:27,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661058867]
[2021-11-20 07:39:27,987 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:39:27,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:39:27,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:39:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:39:28,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:39:28,058 INFO L87 Difference]: Start difference. First operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 4 states, 4 states have (on average 3.0) 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)
[2021-11-20 07:39:28,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:39:28,267 INFO L93 Difference]: Finished difference Result 99 states and 137 transitions.
[2021-11-20 07:39:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:39:28,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) 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 11
[2021-11-20 07:39:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:39:28,281 INFO L225 Difference]: With dead ends: 99
[2021-11-20 07:39:28,281 INFO L226 Difference]: Without dead ends: 46
[2021-11-20 07:39:28,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:39:28,292 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 13 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:39:28,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 147 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:39:28,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-11-20 07:39:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39.
[2021-11-20 07:39:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-20 07:39:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions.
[2021-11-20 07:39:28,357 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 11
[2021-11-20 07:39:28,357 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:39:28,358 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions.
[2021-11-20 07:39:28,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) 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)
[2021-11-20 07:39:28,359 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions.
[2021-11-20 07:39:28,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-20 07:39:28,361 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:28,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:28,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2021-11-20 07:39:28,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:39:28,581 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash 413718792, now seen corresponding path program 1 times
[2021-11-20 07:39:28,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:39:28,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399861191]
[2021-11-20 07:39:28,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:28,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:39:28,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:39:28,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:39:28,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2021-11-20 07:39:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:39:28,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-20 07:39:28,719 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:39:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:28,965 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:29,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:39:29,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399861191]
[2021-11-20 07:39:29,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399861191] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:39:29,155 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:39:29,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2021-11-20 07:39:29,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964896942]
[2021-11-20 07:39:29,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:39:29,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:39:29,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:39:29,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:39:29,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:39:29,164 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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)
[2021-11-20 07:39:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:39:29,475 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions.
[2021-11-20 07:39:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:39:29,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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
[2021-11-20 07:39:29,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:39:29,488 INFO L225 Difference]: With dead ends: 55
[2021-11-20 07:39:29,489 INFO L226 Difference]: Without dead ends: 41
[2021-11-20 07:39:29,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:39:29,494 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2021-11-20 07:39:29,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2021-11-20 07:39:29,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2021-11-20 07:39:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2021-11-20 07:39:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-20 07:39:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions.
[2021-11-20 07:39:29,517 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 13
[2021-11-20 07:39:29,517 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:39:29,517 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions.
[2021-11-20 07:39:29,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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)
[2021-11-20 07:39:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions.
[2021-11-20 07:39:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-11-20 07:39:29,520 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:29,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:29,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0
[2021-11-20 07:39:29,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:39:29,738 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1714945339, now seen corresponding path program 1 times
[2021-11-20 07:39:29,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:39:29,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614046560]
[2021-11-20 07:39:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:29,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:39:29,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:39:29,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:39:29,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2021-11-20 07:39:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:39:29,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-20 07:39:29,888 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:39:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:30,285 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:30,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:39:30,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614046560]
[2021-11-20 07:39:30,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614046560] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:39:30,517 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:39:30,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2021-11-20 07:39:30,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091160005]
[2021-11-20 07:39:30,518 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:39:30,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:39:30,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:39:30,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:39:30,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:39:30,521 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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)
[2021-11-20 07:39:30,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:39:30,663 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions.
[2021-11-20 07:39:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:39:30,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 15
[2021-11-20 07:39:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:39:30,666 INFO L225 Difference]: With dead ends: 58
[2021-11-20 07:39:30,667 INFO L226 Difference]: Without dead ends: 45
[2021-11-20 07:39:30,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:39:30,670 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:39:30,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:39:30,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2021-11-20 07:39:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2021-11-20 07:39:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-20 07:39:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions.
[2021-11-20 07:39:30,683 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 15
[2021-11-20 07:39:30,684 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:39:30,684 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions.
[2021-11-20 07:39:30,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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)
[2021-11-20 07:39:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions.
[2021-11-20 07:39:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-11-20 07:39:30,686 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:30,686 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:30,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2021-11-20 07:39:30,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:39:30,901 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:30,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1992824063, now seen corresponding path program 1 times
[2021-11-20 07:39:30,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:39:30,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383246434]
[2021-11-20 07:39:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:39:30,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:39:30,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:39:30,904 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:39:30,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2021-11-20 07:39:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:39:31,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-11-20 07:39:31,015 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:39:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:31,757 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:39:32,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:39:32,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383246434]
[2021-11-20 07:39:32,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383246434] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:39:32,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:39:32,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2021-11-20 07:39:32,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074208970]
[2021-11-20 07:39:32,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:39:32,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-20 07:39:32,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:39:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-20 07:39:32,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-11-20 07:39:32,357 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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)
[2021-11-20 07:39:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:39:32,737 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions.
[2021-11-20 07:39:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-20 07:39:32,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 19
[2021-11-20 07:39:32,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:39:32,741 INFO L225 Difference]: With dead ends: 60
[2021-11-20 07:39:32,741 INFO L226 Difference]: Without dead ends: 47
[2021-11-20 07:39:32,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-11-20 07:39:32,745 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2021-11-20 07:39:32,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 189 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2021-11-20 07:39:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2021-11-20 07:39:32,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2021-11-20 07:39:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-20 07:39:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions.
[2021-11-20 07:39:32,760 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 19
[2021-11-20 07:39:32,761 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:39:32,761 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions.
[2021-11-20 07:39:32,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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)
[2021-11-20 07:39:32,762 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions.
[2021-11-20 07:39:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-11-20 07:39:32,764 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:39:32,764 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:39:32,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2021-11-20 07:39:32,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:39:32,983 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:39:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:39:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash -626272964, now seen corresponding path program 2 times
[2021-11-20 07:39:32,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:39:32,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075430939]
[2021-11-20 07:39:32,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 07:39:32,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:39:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:39:32,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:39:32,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2021-11-20 07:39:33,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-20 07:39:33,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:39:33,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-11-20 07:39:33,100 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:39:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-20 07:39:34,773 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:39:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-20 07:39:44,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:39:44,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075430939]
[2021-11-20 07:39:44,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075430939] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:39:44,909 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:39:44,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2021-11-20 07:39:44,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24490887]
[2021-11-20 07:39:44,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:39:44,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-20 07:39:44,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:39:44,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-20 07:39:44,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306
[2021-11-20 07:39:44,913 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:40:08,143 WARN L227 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2021-11-20 07:40:26,121 WARN L227 SmtUtils]: Spent 9.18s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2021-11-20 07:40:44,109 WARN L227 SmtUtils]: Spent 10.66s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2021-11-20 07:40:46,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-20 07:40:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:40:49,161 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions.
[2021-11-20 07:40:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-11-20 07:40:49,206 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-11-20 07:40:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:40:49,210 INFO L225 Difference]: With dead ends: 71
[2021-11-20 07:40:49,210 INFO L226 Difference]: Without dead ends: 68
[2021-11-20 07:40:49,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 65.4s TimeCoverageRelationStatistics Valid=118, Invalid=531, Unknown=1, NotChecked=0, Total=650
[2021-11-20 07:40:49,214 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:40:49,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 462 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time]
[2021-11-20 07:40:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2021-11-20 07:40:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66.
[2021-11-20 07:40:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 52 states have internal predecessors, (59), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2021-11-20 07:40:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions.
[2021-11-20 07:40:49,240 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 21
[2021-11-20 07:40:49,241 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:40:49,241 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions.
[2021-11-20 07:40:49,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:40:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions.
[2021-11-20 07:40:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-11-20 07:40:49,245 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:40:49,245 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:40:49,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2021-11-20 07:40:49,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:40:49,461 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:40:49,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:40:49,461 INFO L85 PathProgramCache]: Analyzing trace with hash -311360839, now seen corresponding path program 3 times
[2021-11-20 07:40:49,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:40:49,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881554202]
[2021-11-20 07:40:49,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-20 07:40:49,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:40:49,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:40:49,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:40:49,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2021-11-20 07:40:49,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-11-20 07:40:49,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:40:49,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-20 07:40:49,561 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:40:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-11-20 07:40:49,699 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:40:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-11-20 07:40:49,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:40:49,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881554202]
[2021-11-20 07:40:49,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881554202] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:40:49,806 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:40:49,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2021-11-20 07:40:49,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714786360]
[2021-11-20 07:40:49,807 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:40:49,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 07:40:49,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:40:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 07:40:49,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:40:49,809 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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)
[2021-11-20 07:40:49,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:40:49,876 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions.
[2021-11-20 07:40:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:40:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 23
[2021-11-20 07:40:49,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:40:49,884 INFO L225 Difference]: With dead ends: 78
[2021-11-20 07:40:49,885 INFO L226 Difference]: Without dead ends: 67
[2021-11-20 07:40:49,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:40:49,887 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:40:49,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:40:49,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2021-11-20 07:40:49,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64.
[2021-11-20 07:40:49,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 50 states have internal predecessors, (55), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2021-11-20 07:40:49,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions.
[2021-11-20 07:40:49,908 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 23
[2021-11-20 07:40:49,908 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:40:49,908 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions.
[2021-11-20 07:40:49,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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)
[2021-11-20 07:40:49,909 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions.
[2021-11-20 07:40:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-11-20 07:40:49,911 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:40:49,912 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:40:49,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2021-11-20 07:40:50,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:40:50,125 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:40:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:40:50,126 INFO L85 PathProgramCache]: Analyzing trace with hash 603968502, now seen corresponding path program 4 times
[2021-11-20 07:40:50,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:40:50,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334091746]
[2021-11-20 07:40:50,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-11-20 07:40:50,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:40:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:40:50,129 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:40:50,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2021-11-20 07:40:50,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-11-20 07:40:50,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:40:50,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-20 07:40:50,242 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:40:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-20 07:40:51,413 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:40:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-20 07:40:52,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:40:52,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334091746]
[2021-11-20 07:40:52,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334091746] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:40:52,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:40:52,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2021-11-20 07:40:52,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239836433]
[2021-11-20 07:40:52,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:40:52,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-20 07:40:52,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:40:52,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-20 07:40:52,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2021-11-20 07:40:52,610 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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)
[2021-11-20 07:40:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:40:53,801 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions.
[2021-11-20 07:40:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-20 07:40:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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 25
[2021-11-20 07:40:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:40:53,814 INFO L225 Difference]: With dead ends: 88
[2021-11-20 07:40:53,815 INFO L226 Difference]: Without dead ends: 64
[2021-11-20 07:40:53,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2021-11-20 07:40:53,817 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 12 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2021-11-20 07:40:53,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 299 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2021-11-20 07:40:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2021-11-20 07:40:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60.
[2021-11-20 07:40:53,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 46 states have internal predecessors, (50), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2021-11-20 07:40:53,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions.
[2021-11-20 07:40:53,834 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 25
[2021-11-20 07:40:53,834 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:40:53,835 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions.
[2021-11-20 07:40:53,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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)
[2021-11-20 07:40:53,835 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions.
[2021-11-20 07:40:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-11-20 07:40:53,838 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:40:53,838 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:40:53,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0
[2021-11-20 07:40:54,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:40:54,059 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:40:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:40:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 225362363, now seen corresponding path program 1 times
[2021-11-20 07:40:54,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:40:54,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149528975]
[2021-11-20 07:40:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:40:54,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:40:54,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:40:54,062 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:40:54,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2021-11-20 07:40:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:40:54,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-11-20 07:40:54,208 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:40:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-20 07:40:55,172 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:40:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:40:56,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:40:56,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149528975]
[2021-11-20 07:40:56,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149528975] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:40:56,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:40:56,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-11-20 07:40:56,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034578913]
[2021-11-20 07:40:56,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:40:56,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-11-20 07:40:56,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:40:56,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-11-20 07:40:56,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132
[2021-11-20 07:40:56,401 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:40:57,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:40:57,527 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions.
[2021-11-20 07:40:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-20 07:40:57,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26
[2021-11-20 07:40:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:40:57,531 INFO L225 Difference]: With dead ends: 74
[2021-11-20 07:40:57,531 INFO L226 Difference]: Without dead ends: 60
[2021-11-20 07:40:57,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2021-11-20 07:40:57,534 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 17 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2021-11-20 07:40:57,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 264 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 74 Invalid, 0 Unknown, 18 Unchecked, 0.7s Time]
[2021-11-20 07:40:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2021-11-20 07:40:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2021-11-20 07:40:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 46 states have internal predecessors, (49), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2021-11-20 07:40:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions.
[2021-11-20 07:40:57,555 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 26
[2021-11-20 07:40:57,555 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:40:57,555 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions.
[2021-11-20 07:40:57,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:40:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions.
[2021-11-20 07:40:57,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-11-20 07:40:57,559 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:40:57,559 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:40:57,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2021-11-20 07:40:57,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:40:57,776 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:40:57,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:40:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash -334589841, now seen corresponding path program 5 times
[2021-11-20 07:40:57,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:40:57,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746155943]
[2021-11-20 07:40:57,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-11-20 07:40:57,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:40:57,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:40:57,779 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:40:57,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2021-11-20 07:40:57,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2021-11-20 07:40:57,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:40:57,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core
[2021-11-20 07:40:57,898 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:40:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-20 07:40:59,376 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:41:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-20 07:41:03,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:41:03,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746155943]
[2021-11-20 07:41:03,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746155943] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:41:03,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:41:03,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14
[2021-11-20 07:41:03,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575012980]
[2021-11-20 07:41:03,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:41:03,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-11-20 07:41:03,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:41:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-11-20 07:41:03,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2021-11-20 07:41:03,484 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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)
[2021-11-20 07:41:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:41:04,603 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions.
[2021-11-20 07:41:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-20 07:41:04,621 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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 27
[2021-11-20 07:41:04,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:41:04,623 INFO L225 Difference]: With dead ends: 75
[2021-11-20 07:41:04,623 INFO L226 Difference]: Without dead ends: 49
[2021-11-20 07:41:04,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2021-11-20 07:41:04,626 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 14 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:41:04,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 242 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2021-11-20 07:41:04,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2021-11-20 07:41:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2021-11-20 07:41:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2021-11-20 07:41:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions.
[2021-11-20 07:41:04,642 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27
[2021-11-20 07:41:04,643 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:41:04,643 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions.
[2021-11-20 07:41:04,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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)
[2021-11-20 07:41:04,644 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions.
[2021-11-20 07:41:04,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-11-20 07:41:04,646 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:41:04,647 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:41:04,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0
[2021-11-20 07:41:04,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:41:04,869 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:41:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:41:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1781630816, now seen corresponding path program 2 times
[2021-11-20 07:41:04,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:41:04,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060122998]
[2021-11-20 07:41:04,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 07:41:04,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:41:04,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:41:04,874 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:41:04,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process
[2021-11-20 07:41:05,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-20 07:41:05,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:41:05,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-11-20 07:41:05,085 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:41:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-20 07:41:07,526 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:41:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-20 07:41:20,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:41:20,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060122998]
[2021-11-20 07:41:20,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060122998] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:41:20,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:41:20,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2021-11-20 07:41:20,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168661299]
[2021-11-20 07:41:20,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:41:20,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-20 07:41:20,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:41:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-20 07:41:20,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306
[2021-11-20 07:41:20,712 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 18 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-20 07:41:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:41:39,173 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions.
[2021-11-20 07:41:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-11-20 07:41:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28
[2021-11-20 07:41:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:41:39,174 INFO L225 Difference]: With dead ends: 49
[2021-11-20 07:41:39,174 INFO L226 Difference]: Without dead ends: 23
[2021-11-20 07:41:39,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506
[2021-11-20 07:41:39,176 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2021-11-20 07:41:39,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 378 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2021-11-20 07:41:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-11-20 07:41:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2021-11-20 07:41:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-11-20 07:41:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions.
[2021-11-20 07:41:39,181 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 28
[2021-11-20 07:41:39,181 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:41:39,182 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions.
[2021-11-20 07:41:39,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-20 07:41:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions.
[2021-11-20 07:41:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-11-20 07:41:39,184 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:41:39,184 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:41:39,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0
[2021-11-20 07:41:39,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:41:39,396 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 07:41:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:41:39,396 INFO L85 PathProgramCache]: Analyzing trace with hash -21288017, now seen corresponding path program 1 times
[2021-11-20 07:41:39,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:41:39,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622762286]
[2021-11-20 07:41:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:41:39,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:41:39,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:41:39,398 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:41:39,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0177ff-b672-4fa6-a4e6-92194cdeb4f6/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process