./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label55.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 38b53e6a
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label55.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R --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 fba727d7a76ab6b9efdfaecb09ee87c47b40a8cbdd36892d05e32f34590b7c75
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-38b53e6
[2022-11-25 15:43:23,152 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-25 15:43:23,156 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-25 15:43:23,207 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-25 15:43:23,209 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-25 15:43:23,214 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-25 15:43:23,217 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-25 15:43:23,221 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-25 15:43:23,224 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-25 15:43:23,230 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-25 15:43:23,232 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-25 15:43:23,235 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-25 15:43:23,236 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-25 15:43:23,240 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-25 15:43:23,242 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-25 15:43:23,245 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-25 15:43:23,247 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-25 15:43:23,249 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-25 15:43:23,251 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-25 15:43:23,259 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-25 15:43:23,261 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-25 15:43:23,264 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-25 15:43:23,267 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-25 15:43:23,268 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-25 15:43:23,281 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-25 15:43:23,281 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-25 15:43:23,282 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-25 15:43:23,284 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-25 15:43:23,285 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-25 15:43:23,286 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-25 15:43:23,287 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-25 15:43:23,288 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-25 15:43:23,290 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-25 15:43:23,292 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-25 15:43:23,293 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-25 15:43:23,294 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-25 15:43:23,295 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-25 15:43:23,295 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-25 15:43:23,296 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-25 15:43:23,297 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-25 15:43:23,298 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-25 15:43:23,299 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-25 15:43:23,348 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-25 15:43:23,349 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-25 15:43:23,350 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-25 15:43:23,350 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-25 15:43:23,351 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-25 15:43:23,352 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-25 15:43:23,353 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-25 15:43:23,353 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-25 15:43:23,354 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-25 15:43:23,354 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-25 15:43:23,356 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-25 15:43:23,356 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-25 15:43:23,357 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-25 15:43:23,357 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-25 15:43:23,357 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-25 15:43:23,358 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-25 15:43:23,358 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-25 15:43:23,359 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-25 15:43:23,359 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-25 15:43:23,359 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-25 15:43:23,360 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-25 15:43:23,360 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-25 15:43:23,361 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-25 15:43:23,361 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-25 15:43:23,361 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 15:43:23,362 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-25 15:43:23,362 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-25 15:43:23,363 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-25 15:43:23,363 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-25 15:43:23,363 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-25 15:43:23,364 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-25 15:43:23,364 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-25 15:43:23,365 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-11-25 15:43:23,365 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-11-25 15:43:23,365 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/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_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R
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 -> fba727d7a76ab6b9efdfaecb09ee87c47b40a8cbdd36892d05e32f34590b7c75
[2022-11-25 15:43:23,759 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-25 15:43:23,797 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-25 15:43:23,800 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-25 15:43:23,802 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-25 15:43:23,802 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-25 15:43:23,804 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem12_label55.c
[2022-11-25 15:43:27,226 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-11-25 15:43:27,860 INFO  L351              CDTParser]: Found 1 translation units.
[2022-11-25 15:43:27,861 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/sv-benchmarks/c/eca-rers2012/Problem12_label55.c
[2022-11-25 15:43:27,899 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/data/a37283077/c0bd78f3ff234d0ab1941e1202f60bee/FLAG16eb0b437
[2022-11-25 15:43:27,925 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/data/a37283077/c0bd78f3ff234d0ab1941e1202f60bee
[2022-11-25 15:43:27,928 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-25 15:43:27,930 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-25 15:43:27,934 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-25 15:43:27,934 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-25 15:43:27,938 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-25 15:43:27,940 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:43:27" (1/1) ...
[2022-11-25 15:43:27,941 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ad57b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:27, skipping insertion in model container
[2022-11-25 15:43:27,941 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:43:27" (1/1) ...
[2022-11-25 15:43:27,950 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-25 15:43:28,122 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-25 15:43:28,347 WARN  L237   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_4adff9c8-446b-4ff6-8725-54060d6079a0/sv-benchmarks/c/eca-rers2012/Problem12_label55.c[1435,1448]
[2022-11-25 15:43:29,749 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 15:43:29,764 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-25 15:43:29,805 WARN  L237   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_4adff9c8-446b-4ff6-8725-54060d6079a0/sv-benchmarks/c/eca-rers2012/Problem12_label55.c[1435,1448]
[2022-11-25 15:43:30,615 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 15:43:30,642 INFO  L208         MainTranslator]: Completed translation
[2022-11-25 15:43:30,643 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30 WrapperNode
[2022-11-25 15:43:30,643 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-25 15:43:30,644 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-25 15:43:30,645 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-25 15:43:30,645 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-25 15:43:30,654 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:30,722 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,088 INFO  L138                Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757
[2022-11-25 15:43:31,089 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-25 15:43:31,090 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-25 15:43:31,090 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-25 15:43:31,094 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-25 15:43:31,106 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,107 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,153 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,154 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,452 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,494 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,520 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,538 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,600 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-25 15:43:31,602 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-25 15:43:31,603 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-25 15:43:31,603 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-25 15:43:31,604 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (1/1) ...
[2022-11-25 15:43:31,614 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 15:43:31,632 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 15:43:31,651 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-25 15:43:31,684 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-25 15:43:31,708 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-25 15:43:31,708 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-25 15:43:31,709 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-25 15:43:31,709 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-25 15:43:31,826 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-25 15:43:31,829 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-25 15:43:38,069 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-25 15:43:38,088 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-25 15:43:38,088 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-25 15:43:38,092 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:43:38 BoogieIcfgContainer
[2022-11-25 15:43:38,092 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-25 15:43:38,095 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-25 15:43:38,095 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-25 15:43:38,099 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-25 15:43:38,100 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:43:27" (1/3) ...
[2022-11-25 15:43:38,101 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d04df5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:43:38, skipping insertion in model container
[2022-11-25 15:43:38,101 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:43:30" (2/3) ...
[2022-11-25 15:43:38,102 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d04df5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:43:38, skipping insertion in model container
[2022-11-25 15:43:38,102 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:43:38" (3/3) ...
[2022-11-25 15:43:38,103 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem12_label55.c
[2022-11-25 15:43:38,127 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-25 15:43:38,127 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-25 15:43:38,225 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-25 15:43:38,234 INFO  L357      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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630185, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-25 15:43:38,234 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-25 15:43:38,244 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:43:38,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-11-25 15:43:38,252 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:43:38,253 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:43:38,254 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:43:38,260 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:43:38,261 INFO  L85        PathProgramCache]: Analyzing trace with hash 297966002, now seen corresponding path program 1 times
[2022-11-25 15:43:38,273 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:43:38,274 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995371683]
[2022-11-25 15:43:38,274 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:43:38,275 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:43:38,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:43:38,546 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 15:43:38,547 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:43:38,547 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995371683]
[2022-11-25 15:43:38,548 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995371683] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:43:38,549 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:43:38,549 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 15:43:38,551 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276570353]
[2022-11-25 15:43:38,552 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:43:38,558 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:43:38,560 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:43:38,623 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:43:38,624 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:43:38,630 INFO  L87              Difference]: Start difference. First operand  has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:43:44,826 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:43:44,827 INFO  L93              Difference]: Finished difference Result 2388 states and 4629 transitions.
[2022-11-25 15:43:44,828 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:43:44,830 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-11-25 15:43:44,830 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:43:44,857 INFO  L225             Difference]: With dead ends: 2388
[2022-11-25 15:43:44,857 INFO  L226             Difference]: Without dead ends: 1506
[2022-11-25 15:43:44,865 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:43:44,869 INFO  L413           NwaCegarLoop]: 92 mSDtfsCounter, 851 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2022-11-25 15:43:44,870 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2022-11-25 15:43:44,894 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1506 states.
[2022-11-25 15:43:45,025 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506.
[2022-11-25 15:43:45,031 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:43:45,039 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions.
[2022-11-25 15:43:45,041 INFO  L78                 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 8
[2022-11-25 15:43:45,041 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:43:45,041 INFO  L495      AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions.
[2022-11-25 15:43:45,042 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:43:45,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions.
[2022-11-25 15:43:45,044 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2022-11-25 15:43:45,045 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:43:45,045 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:43:45,046 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-25 15:43:45,046 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:43:45,047 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:43:45,047 INFO  L85        PathProgramCache]: Analyzing trace with hash 1906625532, now seen corresponding path program 1 times
[2022-11-25 15:43:45,048 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:43:45,048 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405610790]
[2022-11-25 15:43:45,048 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:43:45,049 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:43:45,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:43:45,401 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 15:43:45,401 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:43:45,401 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405610790]
[2022-11-25 15:43:45,402 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405610790] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:43:45,402 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:43:45,402 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 15:43:45,403 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610543308]
[2022-11-25 15:43:45,403 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:43:45,404 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:43:45,405 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:43:45,406 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:43:45,406 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:43:45,406 INFO  L87              Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand  has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:43:50,885 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:43:50,886 INFO  L93              Difference]: Finished difference Result 4514 states and 8438 transitions.
[2022-11-25 15:43:50,887 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:43:50,887 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81
[2022-11-25 15:43:50,888 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:43:50,902 INFO  L225             Difference]: With dead ends: 4514
[2022-11-25 15:43:50,902 INFO  L226             Difference]: Without dead ends: 3010
[2022-11-25 15:43:50,905 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:43:50,906 INFO  L413           NwaCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2022-11-25 15:43:50,907 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2022-11-25 15:43:50,912 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3010 states.
[2022-11-25 15:43:50,984 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008.
[2022-11-25 15:43:50,990 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:43:51,000 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions.
[2022-11-25 15:43:51,002 INFO  L78                 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 81
[2022-11-25 15:43:51,003 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:43:51,003 INFO  L495      AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions.
[2022-11-25 15:43:51,004 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:43:51,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions.
[2022-11-25 15:43:51,011 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2022-11-25 15:43:51,012 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:43:51,016 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:43:51,017 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-25 15:43:51,018 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:43:51,020 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:43:51,021 INFO  L85        PathProgramCache]: Analyzing trace with hash -129197833, now seen corresponding path program 1 times
[2022-11-25 15:43:51,022 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:43:51,024 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467618988]
[2022-11-25 15:43:51,024 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:43:51,025 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:43:51,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:43:51,605 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 15:43:51,606 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:43:51,606 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467618988]
[2022-11-25 15:43:51,606 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467618988] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:43:51,606 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:43:51,607 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 15:43:51,607 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876047675]
[2022-11-25 15:43:51,607 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:43:51,608 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-25 15:43:51,608 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:43:51,609 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-25 15:43:51,610 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-25 15:43:51,610 INFO  L87              Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand  has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:00,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:44:00,379 INFO  L93              Difference]: Finished difference Result 8267 states and 13429 transitions.
[2022-11-25 15:44:00,379 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-25 15:44:00,380 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94
[2022-11-25 15:44:00,380 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:44:00,402 INFO  L225             Difference]: With dead ends: 8267
[2022-11-25 15:44:00,402 INFO  L226             Difference]: Without dead ends: 5261
[2022-11-25 15:44:00,406 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-25 15:44:00,408 INFO  L413           NwaCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time
[2022-11-25 15:44:00,409 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time]
[2022-11-25 15:44:00,416 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5261 states.
[2022-11-25 15:44:00,519 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261.
[2022-11-25 15:44:00,532 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:00,546 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions.
[2022-11-25 15:44:00,546 INFO  L78                 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 94
[2022-11-25 15:44:00,548 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:44:00,548 INFO  L495      AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions.
[2022-11-25 15:44:00,548 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:00,549 INFO  L276                IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions.
[2022-11-25 15:44:00,561 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2022-11-25 15:44:00,565 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:44:00,565 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:44:00,565 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-25 15:44:00,566 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:44:00,566 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:44:00,571 INFO  L85        PathProgramCache]: Analyzing trace with hash 487011922, now seen corresponding path program 1 times
[2022-11-25 15:44:00,572 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:44:00,572 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130692777]
[2022-11-25 15:44:00,572 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:00,573 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:44:00,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:01,111 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 15:44:01,112 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:44:01,112 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130692777]
[2022-11-25 15:44:01,112 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130692777] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 15:44:01,113 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885888192]
[2022-11-25 15:44:01,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:01,114 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 15:44:01,115 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 15:44:01,122 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 15:44:01,157 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-25 15:44:01,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:01,289 INFO  L263         TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-25 15:44:01,304 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 15:44:01,672 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2022-11-25 15:44:01,673 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 15:44:01,673 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [885888192] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:44:01,673 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 15:44:01,673 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2022-11-25 15:44:01,674 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439955267]
[2022-11-25 15:44:01,674 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:44:01,674 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:44:01,675 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:44:01,675 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:44:01,676 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-25 15:44:01,676 INFO  L87              Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand  has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:06,866 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:44:06,867 INFO  L93              Difference]: Finished difference Result 14275 states and 22313 transitions.
[2022-11-25 15:44:06,867 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:44:06,868 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149
[2022-11-25 15:44:06,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:44:06,907 INFO  L225             Difference]: With dead ends: 14275
[2022-11-25 15:44:06,908 INFO  L226             Difference]: Without dead ends: 9767
[2022-11-25 15:44:06,914 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-25 15:44:06,916 INFO  L413           NwaCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2022-11-25 15:44:06,917 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2022-11-25 15:44:06,930 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9767 states.
[2022-11-25 15:44:07,114 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767.
[2022-11-25 15:44:07,132 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:07,156 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions.
[2022-11-25 15:44:07,156 INFO  L78                 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 149
[2022-11-25 15:44:07,158 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:44:07,158 INFO  L495      AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions.
[2022-11-25 15:44:07,159 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:07,161 INFO  L276                IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions.
[2022-11-25 15:44:07,163 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2022-11-25 15:44:07,163 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:44:07,163 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:44:07,181 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-11-25 15:44:07,370 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 15:44:07,370 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:44:07,371 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:44:07,371 INFO  L85        PathProgramCache]: Analyzing trace with hash -1750673786, now seen corresponding path program 1 times
[2022-11-25 15:44:07,371 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:44:07,372 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942393668]
[2022-11-25 15:44:07,372 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:07,374 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:44:07,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:07,820 INFO  L134       CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 15:44:07,820 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:44:07,820 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942393668]
[2022-11-25 15:44:07,821 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942393668] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:44:07,821 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:44:07,821 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 15:44:07,821 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698797535]
[2022-11-25 15:44:07,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:44:07,823 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-25 15:44:07,824 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:44:07,825 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-25 15:44:07,827 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-25 15:44:07,828 INFO  L87              Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand  has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:13,509 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:44:13,509 INFO  L93              Difference]: Finished difference Result 23324 states and 32177 transitions.
[2022-11-25 15:44:13,515 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-25 15:44:13,516 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165
[2022-11-25 15:44:13,517 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:44:13,565 INFO  L225             Difference]: With dead ends: 23324
[2022-11-25 15:44:13,566 INFO  L226             Difference]: Without dead ends: 14273
[2022-11-25 15:44:13,578 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-25 15:44:13,579 INFO  L413           NwaCegarLoop]: 694 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2022-11-25 15:44:13,580 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 708 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2022-11-25 15:44:13,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14273 states.
[2022-11-25 15:44:13,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 14273.
[2022-11-25 15:44:13,867 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14273 states, 14272 states have (on average 1.2779568385650224) internal successors, (18239), 14272 states have internal predecessors, (18239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:13,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18239 transitions.
[2022-11-25 15:44:13,898 INFO  L78                 Accepts]: Start accepts. Automaton has 14273 states and 18239 transitions. Word has length 165
[2022-11-25 15:44:13,898 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:44:13,898 INFO  L495      AbstractCegarLoop]: Abstraction has 14273 states and 18239 transitions.
[2022-11-25 15:44:13,899 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:13,900 INFO  L276                IsEmpty]: Start isEmpty. Operand 14273 states and 18239 transitions.
[2022-11-25 15:44:13,902 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 240
[2022-11-25 15:44:13,903 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:44:13,903 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:44:13,903 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-25 15:44:13,904 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:44:13,904 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:44:13,905 INFO  L85        PathProgramCache]: Analyzing trace with hash 894032909, now seen corresponding path program 1 times
[2022-11-25 15:44:13,905 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:44:13,905 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735801155]
[2022-11-25 15:44:13,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:13,906 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:44:13,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:14,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 96 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2022-11-25 15:44:14,148 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:44:14,148 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735801155]
[2022-11-25 15:44:14,149 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735801155] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:44:14,149 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:44:14,149 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 15:44:14,149 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947080039]
[2022-11-25 15:44:14,149 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:44:14,151 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:44:14,151 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:44:14,152 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:44:14,152 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:44:14,152 INFO  L87              Difference]: Start difference. First operand 14273 states and 18239 transitions. Second operand  has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:19,537 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:44:19,537 INFO  L93              Difference]: Finished difference Result 36805 states and 48361 transitions.
[2022-11-25 15:44:19,538 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:44:19,538 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239
[2022-11-25 15:44:19,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:44:19,592 INFO  L225             Difference]: With dead ends: 36805
[2022-11-25 15:44:19,592 INFO  L226             Difference]: Without dead ends: 23285
[2022-11-25 15:44:19,610 INFO  L412           NwaCegarLoop]: 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
[2022-11-25 15:44:19,611 INFO  L413           NwaCegarLoop]: 388 mSDtfsCounter, 796 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2022-11-25 15:44:19,612 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 395 Invalid, 2938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2022-11-25 15:44:19,650 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23285 states.
[2022-11-25 15:44:19,971 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 23285.
[2022-11-25 15:44:20,007 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23285 states, 23284 states have (on average 1.2641728225390827) internal successors, (29435), 23284 states have internal predecessors, (29435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:20,209 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 29435 transitions.
[2022-11-25 15:44:20,218 INFO  L78                 Accepts]: Start accepts. Automaton has 23285 states and 29435 transitions. Word has length 239
[2022-11-25 15:44:20,219 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:44:20,219 INFO  L495      AbstractCegarLoop]: Abstraction has 23285 states and 29435 transitions.
[2022-11-25 15:44:20,220 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:20,220 INFO  L276                IsEmpty]: Start isEmpty. Operand 23285 states and 29435 transitions.
[2022-11-25 15:44:20,225 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 271
[2022-11-25 15:44:20,226 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:44:20,227 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:44:20,227 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-25 15:44:20,227 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:44:20,229 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:44:20,229 INFO  L85        PathProgramCache]: Analyzing trace with hash -2133057864, now seen corresponding path program 1 times
[2022-11-25 15:44:20,230 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:44:20,230 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125666873]
[2022-11-25 15:44:20,230 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:20,230 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:44:20,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:20,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 127 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2022-11-25 15:44:20,674 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:44:20,674 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125666873]
[2022-11-25 15:44:20,675 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125666873] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:44:20,675 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:44:20,675 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 15:44:20,675 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613221857]
[2022-11-25 15:44:20,676 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:44:20,678 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:44:20,679 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:44:20,679 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:44:20,680 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:44:20,680 INFO  L87              Difference]: Start difference. First operand 23285 states and 29435 transitions. Second operand  has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:26,194 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:44:26,194 INFO  L93              Difference]: Finished difference Result 66094 states and 84228 transitions.
[2022-11-25 15:44:26,195 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:44:26,195 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270
[2022-11-25 15:44:26,195 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:44:26,301 INFO  L225             Difference]: With dead ends: 66094
[2022-11-25 15:44:26,301 INFO  L226             Difference]: Without dead ends: 43562
[2022-11-25 15:44:26,329 INFO  L412           NwaCegarLoop]: 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
[2022-11-25 15:44:26,330 INFO  L413           NwaCegarLoop]: 1403 mSDtfsCounter, 746 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2022-11-25 15:44:26,331 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1411 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2022-11-25 15:44:26,381 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43562 states.
[2022-11-25 15:44:27,094 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43562 to 39056.
[2022-11-25 15:44:27,151 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39056 states, 39055 states have (on average 1.188503392651389) internal successors, (46417), 39055 states have internal predecessors, (46417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:27,227 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39056 states to 39056 states and 46417 transitions.
[2022-11-25 15:44:27,228 INFO  L78                 Accepts]: Start accepts. Automaton has 39056 states and 46417 transitions. Word has length 270
[2022-11-25 15:44:27,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:44:27,229 INFO  L495      AbstractCegarLoop]: Abstraction has 39056 states and 46417 transitions.
[2022-11-25 15:44:27,229 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:27,229 INFO  L276                IsEmpty]: Start isEmpty. Operand 39056 states and 46417 transitions.
[2022-11-25 15:44:27,236 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 312
[2022-11-25 15:44:27,236 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:44:27,237 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:44:27,237 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-25 15:44:27,238 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:44:27,238 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:44:27,238 INFO  L85        PathProgramCache]: Analyzing trace with hash -722854976, now seen corresponding path program 1 times
[2022-11-25 15:44:27,239 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:44:27,239 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418931232]
[2022-11-25 15:44:27,239 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:27,239 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:44:27,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:27,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 248 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2022-11-25 15:44:27,971 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:44:27,971 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418931232]
[2022-11-25 15:44:27,972 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418931232] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:44:27,972 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:44:27,972 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 15:44:27,972 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10022933]
[2022-11-25 15:44:27,973 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:44:27,974 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-25 15:44:27,974 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:44:27,975 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-25 15:44:27,975 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-25 15:44:27,975 INFO  L87              Difference]: Start difference. First operand 39056 states and 46417 transitions. Second operand  has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:33,610 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:44:33,610 INFO  L93              Difference]: Finished difference Result 77398 states and 92114 transitions.
[2022-11-25 15:44:33,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-25 15:44:33,611 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311
[2022-11-25 15:44:33,612 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:44:33,691 INFO  L225             Difference]: With dead ends: 77398
[2022-11-25 15:44:33,691 INFO  L226             Difference]: Without dead ends: 39058
[2022-11-25 15:44:33,711 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-25 15:44:33,712 INFO  L413           NwaCegarLoop]: 309 mSDtfsCounter, 850 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 3667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2022-11-25 15:44:33,712 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 324 Invalid, 3667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2022-11-25 15:44:33,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39058 states.
[2022-11-25 15:44:34,333 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39058 to 39056.
[2022-11-25 15:44:34,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39056 states, 39055 states have (on average 1.1725003200614519) internal successors, (45792), 39055 states have internal predecessors, (45792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:34,442 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39056 states to 39056 states and 45792 transitions.
[2022-11-25 15:44:34,443 INFO  L78                 Accepts]: Start accepts. Automaton has 39056 states and 45792 transitions. Word has length 311
[2022-11-25 15:44:34,443 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:44:34,444 INFO  L495      AbstractCegarLoop]: Abstraction has 39056 states and 45792 transitions.
[2022-11-25 15:44:34,444 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:34,444 INFO  L276                IsEmpty]: Start isEmpty. Operand 39056 states and 45792 transitions.
[2022-11-25 15:44:34,452 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2022-11-25 15:44:34,452 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:44:34,454 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:44:34,454 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-25 15:44:34,455 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:44:34,455 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:44:34,456 INFO  L85        PathProgramCache]: Analyzing trace with hash -1133561799, now seen corresponding path program 1 times
[2022-11-25 15:44:34,456 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:44:34,456 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078969054]
[2022-11-25 15:44:34,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:34,457 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:44:34,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:34,860 INFO  L134       CoverageAnalysis]: Checked inductivity of 276 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-11-25 15:44:34,860 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:44:34,860 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078969054]
[2022-11-25 15:44:34,861 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078969054] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:44:34,861 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:44:34,861 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 15:44:34,861 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851098934]
[2022-11-25 15:44:34,862 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:44:34,862 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:44:34,863 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:44:34,864 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:44:34,864 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:44:34,865 INFO  L87              Difference]: Start difference. First operand 39056 states and 45792 transitions. Second operand  has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:40,477 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:44:40,478 INFO  L93              Difference]: Finished difference Result 97636 states and 116556 transitions.
[2022-11-25 15:44:40,478 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:44:40,478 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329
[2022-11-25 15:44:40,479 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:44:40,674 INFO  L225             Difference]: With dead ends: 97636
[2022-11-25 15:44:40,675 INFO  L226             Difference]: Without dead ends: 59333
[2022-11-25 15:44:40,695 INFO  L412           NwaCegarLoop]: 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
[2022-11-25 15:44:40,696 INFO  L413           NwaCegarLoop]: 1361 mSDtfsCounter, 668 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2022-11-25 15:44:40,696 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1369 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2022-11-25 15:44:40,767 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59333 states.
[2022-11-25 15:44:41,539 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59333 to 57080.
[2022-11-25 15:44:41,585 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 57080 states, 57079 states have (on average 1.1423290527164105) internal successors, (65203), 57079 states have internal predecessors, (65203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:41,690 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 65203 transitions.
[2022-11-25 15:44:41,690 INFO  L78                 Accepts]: Start accepts. Automaton has 57080 states and 65203 transitions. Word has length 329
[2022-11-25 15:44:41,691 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:44:41,691 INFO  L495      AbstractCegarLoop]: Abstraction has 57080 states and 65203 transitions.
[2022-11-25 15:44:41,691 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:41,692 INFO  L276                IsEmpty]: Start isEmpty. Operand 57080 states and 65203 transitions.
[2022-11-25 15:44:41,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 331
[2022-11-25 15:44:41,915 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:44:41,915 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:44:41,916 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-11-25 15:44:41,916 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:44:41,917 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:44:41,917 INFO  L85        PathProgramCache]: Analyzing trace with hash -1753823198, now seen corresponding path program 1 times
[2022-11-25 15:44:41,917 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:44:41,917 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832777560]
[2022-11-25 15:44:41,918 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:41,918 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:44:42,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:42,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 155 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked.
[2022-11-25 15:44:42,328 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:44:42,329 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832777560]
[2022-11-25 15:44:42,329 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832777560] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:44:42,329 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:44:42,329 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 15:44:42,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468045782]
[2022-11-25 15:44:42,330 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:44:42,330 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:44:42,331 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:44:42,331 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:44:42,332 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:44:42,332 INFO  L87              Difference]: Start difference. First operand 57080 states and 65203 transitions. Second operand  has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:47,539 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:44:47,539 INFO  L93              Difference]: Finished difference Result 133684 states and 155378 transitions.
[2022-11-25 15:44:47,539 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:44:47,540 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 330
[2022-11-25 15:44:47,541 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:44:47,625 INFO  L225             Difference]: With dead ends: 133684
[2022-11-25 15:44:47,626 INFO  L226             Difference]: Without dead ends: 77357
[2022-11-25 15:44:47,648 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:44:47,649 INFO  L413           NwaCegarLoop]: 416 mSDtfsCounter, 658 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time
[2022-11-25 15:44:47,649 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 422 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time]
[2022-11-25 15:44:47,731 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77357 states.
[2022-11-25 15:44:48,629 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77357 to 69096.
[2022-11-25 15:44:48,677 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 69096 states, 69095 states have (on average 1.1377957884072654) internal successors, (78616), 69095 states have internal predecessors, (78616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:48,799 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69096 states to 69096 states and 78616 transitions.
[2022-11-25 15:44:48,799 INFO  L78                 Accepts]: Start accepts. Automaton has 69096 states and 78616 transitions. Word has length 330
[2022-11-25 15:44:48,800 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:44:48,800 INFO  L495      AbstractCegarLoop]: Abstraction has 69096 states and 78616 transitions.
[2022-11-25 15:44:48,801 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:48,801 INFO  L276                IsEmpty]: Start isEmpty. Operand 69096 states and 78616 transitions.
[2022-11-25 15:44:48,815 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 447
[2022-11-25 15:44:48,815 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:44:48,816 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:44:48,816 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-11-25 15:44:48,817 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:44:48,817 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:44:48,817 INFO  L85        PathProgramCache]: Analyzing trace with hash 2086376952, now seen corresponding path program 1 times
[2022-11-25 15:44:48,818 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:44:48,818 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614961930]
[2022-11-25 15:44:48,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:48,818 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:44:49,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:50,262 INFO  L134       CoverageAnalysis]: Checked inductivity of 567 backedges. 64 proven. 333 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked.
[2022-11-25 15:44:50,263 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:44:50,263 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614961930]
[2022-11-25 15:44:50,263 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614961930] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 15:44:50,263 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191392881]
[2022-11-25 15:44:50,264 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:50,264 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 15:44:50,264 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 15:44:50,266 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 15:44:50,277 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-25 15:44:50,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:50,677 INFO  L263         TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-25 15:44:50,703 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 15:44:50,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 567 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2022-11-25 15:44:50,782 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 15:44:50,782 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191392881] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:44:50,783 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 15:44:50,783 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6
[2022-11-25 15:44:50,783 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710403807]
[2022-11-25 15:44:50,783 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:44:50,784 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:44:50,784 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:44:50,785 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:44:50,785 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-11-25 15:44:50,786 INFO  L87              Difference]: Start difference. First operand 69096 states and 78616 transitions. Second operand  has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:55,737 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:44:55,737 INFO  L93              Difference]: Finished difference Result 152459 states and 173580 transitions.
[2022-11-25 15:44:55,738 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:44:55,738 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 446
[2022-11-25 15:44:55,739 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:44:55,832 INFO  L225             Difference]: With dead ends: 152459
[2022-11-25 15:44:55,832 INFO  L226             Difference]: Without dead ends: 84116
[2022-11-25 15:44:55,851 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-11-25 15:44:55,853 INFO  L413           NwaCegarLoop]: 1109 mSDtfsCounter, 866 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-11-25 15:44:55,854 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 1117 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-11-25 15:44:55,930 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84116 states.
[2022-11-25 15:44:56,912 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84116 to 84116.
[2022-11-25 15:44:56,961 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 84116 states, 84115 states have (on average 1.125280865481781) internal successors, (94653), 84115 states have internal predecessors, (94653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:57,113 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 94653 transitions.
[2022-11-25 15:44:57,113 INFO  L78                 Accepts]: Start accepts. Automaton has 84116 states and 94653 transitions. Word has length 446
[2022-11-25 15:44:57,114 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:44:57,114 INFO  L495      AbstractCegarLoop]: Abstraction has 84116 states and 94653 transitions.
[2022-11-25 15:44:57,115 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:44:57,115 INFO  L276                IsEmpty]: Start isEmpty. Operand 84116 states and 94653 transitions.
[2022-11-25 15:44:57,132 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 488
[2022-11-25 15:44:57,133 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:44:57,133 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:44:57,147 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-25 15:44:57,341 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2022-11-25 15:44:57,341 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:44:57,342 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:44:57,342 INFO  L85        PathProgramCache]: Analyzing trace with hash -771262672, now seen corresponding path program 1 times
[2022-11-25 15:44:57,342 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:44:57,342 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981854544]
[2022-11-25 15:44:57,343 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:44:57,343 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:44:57,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:44:57,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 613 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked.
[2022-11-25 15:44:57,994 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:44:57,994 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981854544]
[2022-11-25 15:44:57,994 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981854544] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:44:57,994 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:44:57,995 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 15:44:57,995 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341579887]
[2022-11-25 15:44:57,995 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:44:57,997 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:44:57,997 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:44:57,998 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:44:57,999 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:44:58,000 INFO  L87              Difference]: Start difference. First operand 84116 states and 94653 transitions. Second operand  has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:03,674 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:45:03,674 INFO  L93              Difference]: Finished difference Result 202025 states and 229597 transitions.
[2022-11-25 15:45:03,674 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:45:03,674 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 487
[2022-11-25 15:45:03,675 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:45:03,806 INFO  L225             Difference]: With dead ends: 202025
[2022-11-25 15:45:03,807 INFO  L226             Difference]: Without dead ends: 114907
[2022-11-25 15:45:03,844 INFO  L412           NwaCegarLoop]: 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
[2022-11-25 15:45:03,845 INFO  L413           NwaCegarLoop]: 1275 mSDtfsCounter, 655 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-11-25 15:45:03,845 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1282 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-11-25 15:45:03,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 114907 states.
[2022-11-25 15:45:05,346 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 114907 to 99887.
[2022-11-25 15:45:05,412 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 99887 states, 99886 states have (on average 1.1144204393008028) internal successors, (111315), 99886 states have internal predecessors, (111315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:05,604 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 99887 states to 99887 states and 111315 transitions.
[2022-11-25 15:45:05,604 INFO  L78                 Accepts]: Start accepts. Automaton has 99887 states and 111315 transitions. Word has length 487
[2022-11-25 15:45:05,606 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:45:05,606 INFO  L495      AbstractCegarLoop]: Abstraction has 99887 states and 111315 transitions.
[2022-11-25 15:45:05,606 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:05,607 INFO  L276                IsEmpty]: Start isEmpty. Operand 99887 states and 111315 transitions.
[2022-11-25 15:45:05,635 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 579
[2022-11-25 15:45:05,636 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:45:05,636 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:45:05,637 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-11-25 15:45:05,637 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:45:05,638 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:45:05,638 INFO  L85        PathProgramCache]: Analyzing trace with hash 1051675525, now seen corresponding path program 1 times
[2022-11-25 15:45:05,638 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:45:05,639 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236680589]
[2022-11-25 15:45:05,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:45:05,639 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:45:05,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:45:07,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 728 backedges. 493 proven. 229 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-11-25 15:45:07,866 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:45:07,866 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236680589]
[2022-11-25 15:45:07,867 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236680589] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 15:45:07,867 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635797873]
[2022-11-25 15:45:07,867 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:45:07,867 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 15:45:07,868 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 15:45:07,869 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 15:45:07,875 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-25 15:45:08,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:45:08,363 INFO  L263         TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-25 15:45:08,373 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 15:45:08,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 728 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked.
[2022-11-25 15:45:08,417 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 15:45:08,417 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [635797873] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:45:08,418 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 15:45:08,418 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2022-11-25 15:45:08,421 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066675722]
[2022-11-25 15:45:08,421 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:45:08,423 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:45:08,423 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:45:08,424 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:45:08,425 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-11-25 15:45:08,425 INFO  L87              Difference]: Start difference. First operand 99887 states and 111315 transitions. Second operand  has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:13,550 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:45:13,550 INFO  L93              Difference]: Finished difference Result 202776 states and 225721 transitions.
[2022-11-25 15:45:13,551 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:45:13,551 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 578
[2022-11-25 15:45:13,552 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:45:13,668 INFO  L225             Difference]: With dead ends: 202776
[2022-11-25 15:45:13,668 INFO  L226             Difference]: Without dead ends: 103642
[2022-11-25 15:45:13,700 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-11-25 15:45:13,701 INFO  L413           NwaCegarLoop]: 1173 mSDtfsCounter, 832 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-11-25 15:45:13,701 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1181 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-11-25 15:45:13,787 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103642 states.
[2022-11-25 15:45:14,827 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103642 to 97634.
[2022-11-25 15:45:14,883 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97634 states, 97633 states have (on average 1.072147736933209) internal successors, (104677), 97633 states have internal predecessors, (104677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:15,504 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97634 states to 97634 states and 104677 transitions.
[2022-11-25 15:45:15,504 INFO  L78                 Accepts]: Start accepts. Automaton has 97634 states and 104677 transitions. Word has length 578
[2022-11-25 15:45:15,505 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:45:15,505 INFO  L495      AbstractCegarLoop]: Abstraction has 97634 states and 104677 transitions.
[2022-11-25 15:45:15,505 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:15,505 INFO  L276                IsEmpty]: Start isEmpty. Operand 97634 states and 104677 transitions.
[2022-11-25 15:45:15,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 580
[2022-11-25 15:45:15,534 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:45:15,534 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:45:15,543 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-11-25 15:45:15,740 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2022-11-25 15:45:15,741 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:45:15,741 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:45:15,742 INFO  L85        PathProgramCache]: Analyzing trace with hash -341058602, now seen corresponding path program 1 times
[2022-11-25 15:45:15,742 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:45:15,742 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537875645]
[2022-11-25 15:45:15,742 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:45:15,743 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:45:15,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:45:16,326 INFO  L134       CoverageAnalysis]: Checked inductivity of 697 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked.
[2022-11-25 15:45:16,326 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:45:16,326 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537875645]
[2022-11-25 15:45:16,327 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537875645] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:45:16,327 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:45:16,327 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 15:45:16,328 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60390620]
[2022-11-25 15:45:16,328 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:45:16,329 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:45:16,329 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:45:16,331 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:45:16,331 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:45:16,332 INFO  L87              Difference]: Start difference. First operand 97634 states and 104677 transitions. Second operand  has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:22,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:45:22,174 INFO  L93              Difference]: Finished difference Result 228310 states and 245588 transitions.
[2022-11-25 15:45:22,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:45:22,175 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 579
[2022-11-25 15:45:22,175 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:45:22,324 INFO  L225             Difference]: With dead ends: 228310
[2022-11-25 15:45:22,324 INFO  L226             Difference]: Without dead ends: 131429
[2022-11-25 15:45:22,369 INFO  L412           NwaCegarLoop]: 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
[2022-11-25 15:45:22,370 INFO  L413           NwaCegarLoop]: 1238 mSDtfsCounter, 667 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-11-25 15:45:22,370 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1246 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-11-25 15:45:22,482 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131429 states.
[2022-11-25 15:45:24,189 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131429 to 119413.
[2022-11-25 15:45:24,250 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 119413 states, 119412 states have (on average 1.0641727799551133) internal successors, (127075), 119412 states have internal predecessors, (127075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:24,397 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 119413 states to 119413 states and 127075 transitions.
[2022-11-25 15:45:24,397 INFO  L78                 Accepts]: Start accepts. Automaton has 119413 states and 127075 transitions. Word has length 579
[2022-11-25 15:45:24,398 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:45:24,398 INFO  L495      AbstractCegarLoop]: Abstraction has 119413 states and 127075 transitions.
[2022-11-25 15:45:24,398 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:24,398 INFO  L276                IsEmpty]: Start isEmpty. Operand 119413 states and 127075 transitions.
[2022-11-25 15:45:24,408 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 602
[2022-11-25 15:45:24,409 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:45:24,409 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:45:24,409 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-11-25 15:45:24,409 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:45:24,410 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:45:24,410 INFO  L85        PathProgramCache]: Analyzing trace with hash 907560909, now seen corresponding path program 1 times
[2022-11-25 15:45:24,410 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:45:24,411 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577709196]
[2022-11-25 15:45:24,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:45:24,411 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:45:24,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:45:26,072 INFO  L134       CoverageAnalysis]: Checked inductivity of 796 backedges. 568 proven. 110 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked.
[2022-11-25 15:45:26,073 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:45:26,074 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577709196]
[2022-11-25 15:45:26,074 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577709196] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 15:45:26,074 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749217653]
[2022-11-25 15:45:26,075 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:45:26,075 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 15:45:26,075 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 15:45:26,077 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 15:45:26,107 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-11-25 15:45:26,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:45:26,434 INFO  L263         TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-25 15:45:26,447 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 15:45:26,501 INFO  L134       CoverageAnalysis]: Checked inductivity of 796 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked.
[2022-11-25 15:45:26,501 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 15:45:26,502 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [749217653] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:45:26,502 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 15:45:26,502 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6
[2022-11-25 15:45:26,503 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180941291]
[2022-11-25 15:45:26,503 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:45:26,504 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:45:26,505 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:45:26,505 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:45:26,506 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-11-25 15:45:26,506 INFO  L87              Difference]: Start difference. First operand 119413 states and 127075 transitions. Second operand  has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:32,089 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:45:32,090 INFO  L93              Difference]: Finished difference Result 238073 states and 253392 transitions.
[2022-11-25 15:45:32,090 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:45:32,090 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 601
[2022-11-25 15:45:32,091 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:45:32,224 INFO  L225             Difference]: With dead ends: 238073
[2022-11-25 15:45:32,224 INFO  L226             Difference]: Without dead ends: 119413
[2022-11-25 15:45:32,267 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-11-25 15:45:32,267 INFO  L413           NwaCegarLoop]: 1296 mSDtfsCounter, 783 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2022-11-25 15:45:32,268 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1304 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2022-11-25 15:45:32,389 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 119413 states.
[2022-11-25 15:45:33,645 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 104393.
[2022-11-25 15:45:33,708 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 104393 states, 104392 states have (on average 1.038240478197563) internal successors, (108384), 104392 states have internal predecessors, (108384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:34,379 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104393 states to 104393 states and 108384 transitions.
[2022-11-25 15:45:34,379 INFO  L78                 Accepts]: Start accepts. Automaton has 104393 states and 108384 transitions. Word has length 601
[2022-11-25 15:45:34,379 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:45:34,379 INFO  L495      AbstractCegarLoop]: Abstraction has 104393 states and 108384 transitions.
[2022-11-25 15:45:34,380 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:34,380 INFO  L276                IsEmpty]: Start isEmpty. Operand 104393 states and 108384 transitions.
[2022-11-25 15:45:34,397 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 655
[2022-11-25 15:45:34,398 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:45:34,398 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:45:34,409 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2022-11-25 15:45:34,605 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4adff9c8-446b-4ff6-8725-54060d6079a0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2022-11-25 15:45:34,606 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:45:34,606 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:45:34,606 INFO  L85        PathProgramCache]: Analyzing trace with hash 766311129, now seen corresponding path program 1 times
[2022-11-25 15:45:34,606 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:45:34,607 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463640626]
[2022-11-25 15:45:34,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:45:34,607 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:45:34,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:45:36,060 INFO  L134       CoverageAnalysis]: Checked inductivity of 834 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked.
[2022-11-25 15:45:36,060 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:45:36,061 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463640626]
[2022-11-25 15:45:36,061 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463640626] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:45:36,061 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:45:36,062 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 15:45:36,063 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987222863]
[2022-11-25 15:45:36,063 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:45:36,064 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 15:45:36,065 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:45:36,066 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 15:45:36,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:45:36,067 INFO  L87              Difference]: Start difference. First operand 104393 states and 108384 transitions. Second operand  has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:41,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:45:41,193 INFO  L93              Difference]: Finished difference Result 223053 states and 231771 transitions.
[2022-11-25 15:45:41,193 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 15:45:41,193 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 654
[2022-11-25 15:45:41,194 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:45:41,640 INFO  L225             Difference]: With dead ends: 223053
[2022-11-25 15:45:41,641 INFO  L226             Difference]: Without dead ends: 118662
[2022-11-25 15:45:41,667 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 15:45:41,668 INFO  L413           NwaCegarLoop]: 905 mSDtfsCounter, 644 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-11-25 15:45:41,668 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 913 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-11-25 15:45:41,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118662 states.
[2022-11-25 15:45:42,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118662 to 114156.
[2022-11-25 15:45:43,040 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 114156 states, 114155 states have (on average 1.037781963120319) internal successors, (118468), 114155 states have internal predecessors, (118468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:43,176 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 114156 states to 114156 states and 118468 transitions.
[2022-11-25 15:45:43,176 INFO  L78                 Accepts]: Start accepts. Automaton has 114156 states and 118468 transitions. Word has length 654
[2022-11-25 15:45:43,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 15:45:43,177 INFO  L495      AbstractCegarLoop]: Abstraction has 114156 states and 118468 transitions.
[2022-11-25 15:45:43,177 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:45:43,177 INFO  L276                IsEmpty]: Start isEmpty. Operand 114156 states and 118468 transitions.
[2022-11-25 15:45:43,249 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1174
[2022-11-25 15:45:43,250 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 15:45:43,251 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 15:45:43,251 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-11-25 15:45:43,252 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 15:45:43,252 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 15:45:43,253 INFO  L85        PathProgramCache]: Analyzing trace with hash -520858787, now seen corresponding path program 1 times
[2022-11-25 15:45:43,253 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 15:45:43,253 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925572642]
[2022-11-25 15:45:43,253 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 15:45:43,254 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 15:45:43,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 15:45:47,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 950 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2022-11-25 15:45:47,722 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 15:45:47,723 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925572642]
[2022-11-25 15:45:47,723 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925572642] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 15:45:47,723 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 15:45:47,723 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-11-25 15:45:47,724 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493773014]
[2022-11-25 15:45:47,724 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 15:45:47,726 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-11-25 15:45:47,726 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 15:45:47,728 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-11-25 15:45:47,728 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-11-25 15:45:47,729 INFO  L87              Difference]: Start difference. First operand 114156 states and 118468 transitions. Second operand  has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 15:46:01,550 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 15:46:01,551 INFO  L93              Difference]: Finished difference Result 310323 states and 321801 transitions.
[2022-11-25 15:46:01,551 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-11-25 15:46:01,551 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1173
[2022-11-25 15:46:01,553 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 15:46:01,758 INFO  L225             Difference]: With dead ends: 310323
[2022-11-25 15:46:01,758 INFO  L226             Difference]: Without dead ends: 196169
[2022-11-25 15:46:01,811 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2022-11-25 15:46:01,812 INFO  L413           NwaCegarLoop]: 534 mSDtfsCounter, 2983 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 8094 mSolverCounterSat, 2852 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2983 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 10946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2852 IncrementalHoareTripleChecker+Valid, 8094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time
[2022-11-25 15:46:01,812 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2983 Valid, 602 Invalid, 10946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2852 Valid, 8094 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time]
[2022-11-25 15:46:01,980 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 196169 states.