./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label54.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 6b4ec56b
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN --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 0ac09a7f4a9facc2079abb274ef7b1f27d8fcbbd3e9664296e7fe44da52436c5
--- 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-6b4ec56
[2022-11-20 12:34:21,424 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-20 12:34:21,427 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-20 12:34:21,469 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-20 12:34:21,470 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-20 12:34:21,471 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-20 12:34:21,476 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-20 12:34:21,478 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-20 12:34:21,480 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-20 12:34:21,481 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-20 12:34:21,482 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-20 12:34:21,484 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-20 12:34:21,484 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-20 12:34:21,486 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-20 12:34:21,495 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-20 12:34:21,498 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-20 12:34:21,500 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-20 12:34:21,507 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-20 12:34:21,510 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-20 12:34:21,519 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-20 12:34:21,523 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-20 12:34:21,526 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-20 12:34:21,529 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-20 12:34:21,531 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-20 12:34:21,538 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-20 12:34:21,542 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-20 12:34:21,542 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-20 12:34:21,545 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-20 12:34:21,545 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-20 12:34:21,549 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-20 12:34:21,551 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-20 12:34:21,552 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-20 12:34:21,554 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-20 12:34:21,556 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-20 12:34:21,557 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-20 12:34:21,558 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-20 12:34:21,559 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-20 12:34:21,559 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-20 12:34:21,560 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-20 12:34:21,561 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-20 12:34:21,562 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-20 12:34:21,563 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-20 12:34:21,616 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-20 12:34:21,616 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-20 12:34:21,617 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-20 12:34:21,618 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-20 12:34:21,619 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-20 12:34:21,619 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-20 12:34:21,620 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-20 12:34:21,621 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-20 12:34:21,621 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-20 12:34:21,621 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-20 12:34:21,623 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-20 12:34:21,623 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-20 12:34:21,624 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-20 12:34:21,624 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-20 12:34:21,624 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-20 12:34:21,625 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-20 12:34:21,625 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-20 12:34:21,625 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-20 12:34:21,625 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-20 12:34:21,626 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-20 12:34:21,626 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-20 12:34:21,626 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-20 12:34:21,627 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-20 12:34:21,627 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-20 12:34:21,627 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-20 12:34:21,628 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-20 12:34:21,628 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-20 12:34:21,628 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-20 12:34:21,629 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-20 12:34:21,629 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-20 12:34:21,630 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-20 12:34:21,630 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-20 12:34:21,631 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-20 12:34:21,631 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/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_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN
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 -> 0ac09a7f4a9facc2079abb274ef7b1f27d8fcbbd3e9664296e7fe44da52436c5
[2022-11-20 12:34:21,956 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-20 12:34:21,983 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-20 12:34:21,986 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-20 12:34:21,988 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-20 12:34:21,989 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-20 12:34:21,991 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem05_label54.c
[2022-11-20 12:34:25,685 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-11-20 12:34:26,617 INFO  L351              CDTParser]: Found 1 translation units.
[2022-11-20 12:34:26,618 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/sv-benchmarks/c/eca-rers2012/Problem05_label54.c
[2022-11-20 12:34:26,672 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/data/0c1b26692/a09e4df15b1845b7948f03071c4f346e/FLAG9b22c1614
[2022-11-20 12:34:26,695 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/data/0c1b26692/a09e4df15b1845b7948f03071c4f346e
[2022-11-20 12:34:26,700 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-20 12:34:26,703 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-20 12:34:26,709 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-20 12:34:26,709 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-20 12:34:26,714 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-20 12:34:26,715 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:26" (1/1) ...
[2022-11-20 12:34:26,716 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c46e75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:26, skipping insertion in model container
[2022-11-20 12:34:26,717 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:26" (1/1) ...
[2022-11-20 12:34:26,726 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-20 12:34:27,027 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-20 12:34:30,024 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_e199b02b-9bdc-45a4-856a-214837fcf781/sv-benchmarks/c/eca-rers2012/Problem05_label54.c[380115,380128]
[2022-11-20 12:34:30,050 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-20 12:34:30,064 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-20 12:34:31,612 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_e199b02b-9bdc-45a4-856a-214837fcf781/sv-benchmarks/c/eca-rers2012/Problem05_label54.c[380115,380128]
[2022-11-20 12:34:31,620 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-20 12:34:31,688 INFO  L208         MainTranslator]: Completed translation
[2022-11-20 12:34:31,689 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31 WrapperNode
[2022-11-20 12:34:31,689 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-20 12:34:31,691 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-20 12:34:31,691 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-20 12:34:31,692 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-20 12:34:31,701 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:31,813 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:32,240 INFO  L138                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2022-11-20 12:34:32,241 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-20 12:34:32,241 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-20 12:34:32,242 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-20 12:34:32,242 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-20 12:34:32,254 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:32,254 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:32,438 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:32,438 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:32,830 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:32,898 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:33,018 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:33,081 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:33,210 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-20 12:34:33,212 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-20 12:34:33,213 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-20 12:34:33,213 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-20 12:34:33,215 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (1/1) ...
[2022-11-20 12:34:33,239 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-20 12:34:33,255 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3
[2022-11-20 12:34:33,273 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-20 12:34:33,322 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-20 12:34:33,406 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-20 12:34:33,407 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-20 12:34:33,407 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-20 12:34:33,407 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-20 12:34:33,572 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-20 12:34:33,574 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-20 12:34:44,655 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-20 12:34:44,688 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-20 12:34:44,688 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-20 12:34:44,694 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:44 BoogieIcfgContainer
[2022-11-20 12:34:44,695 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-20 12:34:44,698 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-20 12:34:44,698 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-20 12:34:44,702 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-20 12:34:44,702 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:34:26" (1/3) ...
[2022-11-20 12:34:44,703 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8519f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:34:44, skipping insertion in model container
[2022-11-20 12:34:44,704 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:31" (2/3) ...
[2022-11-20 12:34:44,704 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8519f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:34:44, skipping insertion in model container
[2022-11-20 12:34:44,704 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:44" (3/3) ...
[2022-11-20 12:34:44,706 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label54.c
[2022-11-20 12:34:44,731 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-20 12:34:44,731 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-20 12:34:44,947 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-20 12:34:44,956 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;@13be4cbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-20 12:34:44,956 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-20 12:34:44,972 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 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)
[2022-11-20 12:34:45,161 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1677
[2022-11-20 12:34:45,161 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:34:45,164 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:34:45,165 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:34:45,174 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:34:45,176 INFO  L85        PathProgramCache]: Analyzing trace with hash -2143191438, now seen corresponding path program 1 times
[2022-11-20 12:34:45,188 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:34:45,189 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691715214]
[2022-11-20 12:34:45,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:34:45,190 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:34:46,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:34:55,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-20 12:34:55,627 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:34:55,628 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691715214]
[2022-11-20 12:34:55,629 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691715214] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:34:55,629 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:34:55,630 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-20 12:34:55,632 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658991118]
[2022-11-20 12:34:55,633 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:34:55,646 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-20 12:34:55,646 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:34:55,696 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-20 12:34:55,697 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-20 12:34:55,707 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 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 4 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 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)
[2022-11-20 12:35:21,939 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:35:21,939 INFO  L93              Difference]: Finished difference Result 9571 states and 18469 transitions.
[2022-11-20 12:35:21,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-20 12:35:21,943 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 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 1676
[2022-11-20 12:35:21,953 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:35:22,016 INFO  L225             Difference]: With dead ends: 9571
[2022-11-20 12:35:22,017 INFO  L226             Difference]: Without dead ends: 7316
[2022-11-20 12:35:22,028 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-20 12:35:22,034 INFO  L413           NwaCegarLoop]: 2468 mSDtfsCounter, 3721 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 15542 mSolverCounterSat, 4554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3721 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 20096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4554 IncrementalHoareTripleChecker+Valid, 15542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time
[2022-11-20 12:35:22,035 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3721 Valid, 2851 Invalid, 20096 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4554 Valid, 15542 Invalid, 0 Unknown, 0 Unchecked, 25.1s Time]
[2022-11-20 12:35:22,070 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7316 states.
[2022-11-20 12:35:22,306 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 5591.
[2022-11-20 12:35:22,322 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5591 states, 5590 states have (on average 1.6051878354203934) internal successors, (8973), 5590 states have internal predecessors, (8973), 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)
[2022-11-20 12:35:22,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 8973 transitions.
[2022-11-20 12:35:22,342 INFO  L78                 Accepts]: Start accepts. Automaton has 5591 states and 8973 transitions. Word has length 1676
[2022-11-20 12:35:22,346 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:35:22,347 INFO  L495      AbstractCegarLoop]: Abstraction has 5591 states and 8973 transitions.
[2022-11-20 12:35:22,348 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 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)
[2022-11-20 12:35:22,348 INFO  L276                IsEmpty]: Start isEmpty. Operand 5591 states and 8973 transitions.
[2022-11-20 12:35:22,494 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1695
[2022-11-20 12:35:22,494 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:35:22,496 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:35:22,496 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-20 12:35:22,497 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:35:22,498 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:35:22,499 INFO  L85        PathProgramCache]: Analyzing trace with hash -1996520508, now seen corresponding path program 1 times
[2022-11-20 12:35:22,499 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:35:22,500 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109043182]
[2022-11-20 12:35:22,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:35:22,501 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:35:23,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:35:25,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-20 12:35:25,891 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:35:25,891 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109043182]
[2022-11-20 12:35:25,893 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109043182] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:35:25,893 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:35:25,894 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-20 12:35:25,894 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638773566]
[2022-11-20 12:35:25,894 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:35:25,899 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:35:25,899 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:35:25,900 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:35:25,901 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-20 12:35:25,902 INFO  L87              Difference]: Start difference. First operand 5591 states and 8973 transitions. Second operand  has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 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)
[2022-11-20 12:35:35,592 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:35:35,592 INFO  L93              Difference]: Finished difference Result 14654 states and 24587 transitions.
[2022-11-20 12:35:35,595 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:35:35,597 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 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 1694
[2022-11-20 12:35:35,602 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:35:35,643 INFO  L225             Difference]: With dead ends: 14654
[2022-11-20 12:35:35,644 INFO  L226             Difference]: Without dead ends: 9065
[2022-11-20 12:35:35,660 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
[2022-11-20 12:35:35,663 INFO  L413           NwaCegarLoop]: 3447 mSDtfsCounter, 611 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 2230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 6952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2230 IncrementalHoareTripleChecker+Valid, 4722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time
[2022-11-20 12:35:35,664 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 3694 Invalid, 6952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2230 Valid, 4722 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time]
[2022-11-20 12:35:35,680 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9065 states.
[2022-11-20 12:35:35,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 9059.
[2022-11-20 12:35:35,884 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9059 states, 9058 states have (on average 1.4918304261426363) internal successors, (13513), 9058 states have internal predecessors, (13513), 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)
[2022-11-20 12:35:35,905 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 13513 transitions.
[2022-11-20 12:35:35,906 INFO  L78                 Accepts]: Start accepts. Automaton has 9059 states and 13513 transitions. Word has length 1694
[2022-11-20 12:35:35,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:35:35,911 INFO  L495      AbstractCegarLoop]: Abstraction has 9059 states and 13513 transitions.
[2022-11-20 12:35:35,913 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 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)
[2022-11-20 12:35:35,913 INFO  L276                IsEmpty]: Start isEmpty. Operand 9059 states and 13513 transitions.
[2022-11-20 12:35:35,959 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1706
[2022-11-20 12:35:35,960 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:35:35,962 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:35:35,966 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-20 12:35:35,967 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:35:35,968 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:35:35,969 INFO  L85        PathProgramCache]: Analyzing trace with hash -1511689178, now seen corresponding path program 1 times
[2022-11-20 12:35:35,970 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:35:35,970 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673501003]
[2022-11-20 12:35:35,972 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:35:35,972 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:35:36,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:35:38,662 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-20 12:35:38,663 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:35:38,663 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673501003]
[2022-11-20 12:35:38,663 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673501003] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:35:38,664 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:35:38,665 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-20 12:35:38,665 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129198843]
[2022-11-20 12:35:38,666 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:35:38,668 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:35:38,668 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:35:38,669 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:35:38,670 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-20 12:35:38,671 INFO  L87              Difference]: Start difference. First operand 9059 states and 13513 transitions. Second operand  has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 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)
[2022-11-20 12:35:47,753 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:35:47,753 INFO  L93              Difference]: Finished difference Result 25052 states and 38282 transitions.
[2022-11-20 12:35:47,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:35:47,755 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 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 1705
[2022-11-20 12:35:47,755 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:35:47,811 INFO  L225             Difference]: With dead ends: 25052
[2022-11-20 12:35:47,812 INFO  L226             Difference]: Without dead ends: 15995
[2022-11-20 12:35:47,823 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
[2022-11-20 12:35:47,824 INFO  L413           NwaCegarLoop]: 3131 mSDtfsCounter, 2041 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 6874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 6001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time
[2022-11-20 12:35:47,825 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 3557 Invalid, 6874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [873 Valid, 6001 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time]
[2022-11-20 12:35:47,845 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15995 states.
[2022-11-20 12:35:48,145 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15995 to 15952.
[2022-11-20 12:35:48,177 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15952 states, 15951 states have (on average 1.4308193843646166) internal successors, (22823), 15951 states have internal predecessors, (22823), 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)
[2022-11-20 12:35:48,210 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15952 states to 15952 states and 22823 transitions.
[2022-11-20 12:35:48,210 INFO  L78                 Accepts]: Start accepts. Automaton has 15952 states and 22823 transitions. Word has length 1705
[2022-11-20 12:35:48,210 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:35:48,211 INFO  L495      AbstractCegarLoop]: Abstraction has 15952 states and 22823 transitions.
[2022-11-20 12:35:48,212 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 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)
[2022-11-20 12:35:48,213 INFO  L276                IsEmpty]: Start isEmpty. Operand 15952 states and 22823 transitions.
[2022-11-20 12:35:48,272 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1712
[2022-11-20 12:35:48,273 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:35:48,274 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:35:48,275 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-20 12:35:48,275 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:35:48,276 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:35:48,277 INFO  L85        PathProgramCache]: Analyzing trace with hash 995949807, now seen corresponding path program 1 times
[2022-11-20 12:35:48,277 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:35:48,277 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438342117]
[2022-11-20 12:35:48,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:35:48,278 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:35:48,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:35:50,576 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2022-11-20 12:35:50,577 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:35:50,577 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438342117]
[2022-11-20 12:35:50,577 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438342117] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:35:50,578 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:35:50,578 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-20 12:35:50,578 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524371586]
[2022-11-20 12:35:50,579 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:35:50,581 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:35:50,581 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:35:50,582 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:35:50,582 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-20 12:35:50,583 INFO  L87              Difference]: Start difference. First operand 15952 states and 22823 transitions. Second operand  has 3 states, 3 states have (on average 567.0) internal successors, (1701), 3 states have internal predecessors, (1701), 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)
[2022-11-20 12:35:59,857 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:35:59,857 INFO  L93              Difference]: Finished difference Result 33673 states and 47498 transitions.
[2022-11-20 12:35:59,857 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:35:59,858 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 567.0) internal successors, (1701), 3 states have internal predecessors, (1701), 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 1711
[2022-11-20 12:35:59,858 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:35:59,897 INFO  L225             Difference]: With dead ends: 33673
[2022-11-20 12:35:59,897 INFO  L226             Difference]: Without dead ends: 17723
[2022-11-20 12:35:59,916 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
[2022-11-20 12:35:59,917 INFO  L413           NwaCegarLoop]: 3336 mSDtfsCounter, 1896 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 5172 mSolverCounterSat, 2113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 7285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2113 IncrementalHoareTripleChecker+Valid, 5172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time
[2022-11-20 12:35:59,918 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 3580 Invalid, 7285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2113 Valid, 5172 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time]
[2022-11-20 12:35:59,942 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17723 states.
[2022-11-20 12:36:00,195 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17723 to 17653.
[2022-11-20 12:36:00,225 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17653 states, 17652 states have (on average 1.2745297983231363) internal successors, (22498), 17652 states have internal predecessors, (22498), 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)
[2022-11-20 12:36:00,432 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17653 states to 17653 states and 22498 transitions.
[2022-11-20 12:36:00,433 INFO  L78                 Accepts]: Start accepts. Automaton has 17653 states and 22498 transitions. Word has length 1711
[2022-11-20 12:36:00,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:36:00,433 INFO  L495      AbstractCegarLoop]: Abstraction has 17653 states and 22498 transitions.
[2022-11-20 12:36:00,435 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 567.0) internal successors, (1701), 3 states have internal predecessors, (1701), 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)
[2022-11-20 12:36:00,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 17653 states and 22498 transitions.
[2022-11-20 12:36:00,496 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1724
[2022-11-20 12:36:00,496 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:36:00,497 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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[2022-11-20 12:36:00,498 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-20 12:36:00,498 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:36:00,499 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:36:00,500 INFO  L85        PathProgramCache]: Analyzing trace with hash -563779592, now seen corresponding path program 1 times
[2022-11-20 12:36:00,500 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:36:00,501 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862532495]
[2022-11-20 12:36:00,501 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:36:00,502 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:36:00,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:36:04,607 INFO  L134       CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2022-11-20 12:36:04,608 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:36:04,608 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862532495]
[2022-11-20 12:36:04,608 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862532495] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:36:04,608 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:36:04,609 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-20 12:36:04,609 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016507617]
[2022-11-20 12:36:04,609 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:36:04,612 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-20 12:36:04,612 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:36:04,612 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-20 12:36:04,613 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-20 12:36:04,614 INFO  L87              Difference]: Start difference. First operand 17653 states and 22498 transitions. Second operand  has 4 states, 4 states have (on average 425.5) internal successors, (1702), 3 states have internal predecessors, (1702), 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)
[2022-11-20 12:36:18,319 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:36:18,319 INFO  L93              Difference]: Finished difference Result 50609 states and 65120 transitions.
[2022-11-20 12:36:18,322 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-20 12:36:18,324 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 425.5) internal successors, (1702), 3 states have internal predecessors, (1702), 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 1723
[2022-11-20 12:36:18,324 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:36:18,393 INFO  L225             Difference]: With dead ends: 50609
[2022-11-20 12:36:18,394 INFO  L226             Difference]: Without dead ends: 32958
[2022-11-20 12:36:18,417 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
[2022-11-20 12:36:18,419 INFO  L413           NwaCegarLoop]: 1575 mSDtfsCounter, 4082 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 9520 mSolverCounterSat, 2405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 11925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2405 IncrementalHoareTripleChecker+Valid, 9520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time
[2022-11-20 12:36:18,420 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 2027 Invalid, 11925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2405 Valid, 9520 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time]
[2022-11-20 12:36:18,462 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32958 states.
[2022-11-20 12:36:18,939 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32958 to 32947.
[2022-11-20 12:36:18,990 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32947 states, 32946 states have (on average 1.212559946579251) internal successors, (39949), 32946 states have internal predecessors, (39949), 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)
[2022-11-20 12:36:19,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32947 states to 32947 states and 39949 transitions.
[2022-11-20 12:36:19,048 INFO  L78                 Accepts]: Start accepts. Automaton has 32947 states and 39949 transitions. Word has length 1723
[2022-11-20 12:36:19,049 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:36:19,050 INFO  L495      AbstractCegarLoop]: Abstraction has 32947 states and 39949 transitions.
[2022-11-20 12:36:19,056 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 425.5) internal successors, (1702), 3 states have internal predecessors, (1702), 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)
[2022-11-20 12:36:19,056 INFO  L276                IsEmpty]: Start isEmpty. Operand 32947 states and 39949 transitions.
[2022-11-20 12:36:19,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1760
[2022-11-20 12:36:19,153 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:36:19,154 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:36:19,154 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-20 12:36:19,155 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:36:19,155 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:36:19,156 INFO  L85        PathProgramCache]: Analyzing trace with hash -365835339, now seen corresponding path program 1 times
[2022-11-20 12:36:19,158 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:36:19,159 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900853510]
[2022-11-20 12:36:19,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:36:19,160 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:36:19,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:36:20,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 152 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2022-11-20 12:36:20,653 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:36:20,653 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900853510]
[2022-11-20 12:36:20,653 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900853510] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:36:20,653 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:36:20,654 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-20 12:36:20,654 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245075114]
[2022-11-20 12:36:20,654 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:36:20,657 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:36:20,657 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:36:20,658 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:36:20,658 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-20 12:36:20,659 INFO  L87              Difference]: Start difference. First operand 32947 states and 39949 transitions. Second operand  has 3 states, 3 states have (on average 574.0) internal successors, (1722), 2 states have internal predecessors, (1722), 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)
[2022-11-20 12:36:29,054 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:36:29,055 INFO  L93              Difference]: Finished difference Result 81169 states and 97347 transitions.
[2022-11-20 12:36:29,055 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:36:29,056 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 574.0) internal successors, (1722), 2 states have internal predecessors, (1722), 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 1759
[2022-11-20 12:36:29,056 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:36:29,128 INFO  L225             Difference]: With dead ends: 81169
[2022-11-20 12:36:29,128 INFO  L226             Difference]: Without dead ends: 48224
[2022-11-20 12:36:29,152 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
[2022-11-20 12:36:29,153 INFO  L413           NwaCegarLoop]: 1074 mSDtfsCounter, 3154 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 1207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3154 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 5980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1207 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2022-11-20 12:36:29,154 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3154 Valid, 1160 Invalid, 5980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1207 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time]
[2022-11-20 12:36:29,211 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48224 states.
[2022-11-20 12:36:29,730 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48224 to 46526.
[2022-11-20 12:36:29,780 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46526 states, 46525 states have (on average 1.1436432025792584) internal successors, (53208), 46525 states have internal predecessors, (53208), 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)
[2022-11-20 12:36:29,857 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46526 states to 46526 states and 53208 transitions.
[2022-11-20 12:36:29,857 INFO  L78                 Accepts]: Start accepts. Automaton has 46526 states and 53208 transitions. Word has length 1759
[2022-11-20 12:36:29,858 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:36:29,858 INFO  L495      AbstractCegarLoop]: Abstraction has 46526 states and 53208 transitions.
[2022-11-20 12:36:29,859 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 574.0) internal successors, (1722), 2 states have internal predecessors, (1722), 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)
[2022-11-20 12:36:29,859 INFO  L276                IsEmpty]: Start isEmpty. Operand 46526 states and 53208 transitions.
[2022-11-20 12:36:29,928 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1816
[2022-11-20 12:36:29,928 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:36:29,930 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:36:29,930 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-20 12:36:29,930 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:36:29,931 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:36:29,932 INFO  L85        PathProgramCache]: Analyzing trace with hash 153071286, now seen corresponding path program 1 times
[2022-11-20 12:36:29,932 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:36:29,932 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013750266]
[2022-11-20 12:36:29,933 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:36:29,933 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:36:30,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:36:31,593 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2022-11-20 12:36:31,594 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:36:31,594 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013750266]
[2022-11-20 12:36:31,594 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013750266] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:36:31,595 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:36:31,595 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-20 12:36:31,595 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419004984]
[2022-11-20 12:36:31,596 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:36:31,598 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:36:31,598 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:36:31,599 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:36:31,599 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-20 12:36:31,600 INFO  L87              Difference]: Start difference. First operand 46526 states and 53208 transitions. Second operand  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 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)
[2022-11-20 12:36:41,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:36:41,553 INFO  L93              Difference]: Finished difference Result 113438 states and 131563 transitions.
[2022-11-20 12:36:41,554 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:36:41,554 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 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 1815
[2022-11-20 12:36:41,555 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:36:41,675 INFO  L225             Difference]: With dead ends: 113438
[2022-11-20 12:36:41,675 INFO  L226             Difference]: Without dead ends: 66914
[2022-11-20 12:36:41,712 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
[2022-11-20 12:36:41,713 INFO  L413           NwaCegarLoop]: 1840 mSDtfsCounter, 1886 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 5631 mSolverCounterSat, 1399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 7030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1399 IncrementalHoareTripleChecker+Valid, 5631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time
[2022-11-20 12:36:41,714 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 2133 Invalid, 7030 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1399 Valid, 5631 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time]
[2022-11-20 12:36:41,794 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66914 states.
[2022-11-20 12:36:42,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66914 to 66904.
[2022-11-20 12:36:42,603 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66904 states, 66903 states have (on average 1.126675933814627) internal successors, (75378), 66903 states have internal predecessors, (75378), 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)
[2022-11-20 12:36:42,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66904 states to 66904 states and 75378 transitions.
[2022-11-20 12:36:42,718 INFO  L78                 Accepts]: Start accepts. Automaton has 66904 states and 75378 transitions. Word has length 1815
[2022-11-20 12:36:42,719 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:36:42,719 INFO  L495      AbstractCegarLoop]: Abstraction has 66904 states and 75378 transitions.
[2022-11-20 12:36:42,720 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 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)
[2022-11-20 12:36:42,720 INFO  L276                IsEmpty]: Start isEmpty. Operand 66904 states and 75378 transitions.
[2022-11-20 12:36:42,827 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1828
[2022-11-20 12:36:42,827 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:36:42,830 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:36:42,831 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-20 12:36:42,831 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:36:42,832 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:36:42,833 INFO  L85        PathProgramCache]: Analyzing trace with hash 973506904, now seen corresponding path program 1 times
[2022-11-20 12:36:42,833 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:36:42,833 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121063816]
[2022-11-20 12:36:42,834 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:36:42,834 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:36:43,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:36:46,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 207 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2022-11-20 12:36:46,087 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:36:46,088 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121063816]
[2022-11-20 12:36:46,088 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121063816] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:36:46,088 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:36:46,088 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-20 12:36:46,089 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882052774]
[2022-11-20 12:36:46,089 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:36:46,091 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:36:46,092 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:36:46,092 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:36:46,093 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-20 12:36:46,094 INFO  L87              Difference]: Start difference. First operand 66904 states and 75378 transitions. Second operand  has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 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)
[2022-11-20 12:36:55,049 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:36:55,049 INFO  L93              Difference]: Finished difference Result 145717 states and 163947 transitions.
[2022-11-20 12:36:55,049 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:36:55,050 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 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 1827
[2022-11-20 12:36:55,050 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:36:55,164 INFO  L225             Difference]: With dead ends: 145717
[2022-11-20 12:36:55,164 INFO  L226             Difference]: Without dead ends: 78815
[2022-11-20 12:36:55,192 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
[2022-11-20 12:36:55,193 INFO  L413           NwaCegarLoop]: 3846 mSDtfsCounter, 1707 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 5672 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 4071 SdHoareTripleChecker+Invalid, 6068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 5672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time
[2022-11-20 12:36:55,193 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 4071 Invalid, 6068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [396 Valid, 5672 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time]
[2022-11-20 12:36:55,276 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78815 states.
[2022-11-20 12:36:56,355 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78815 to 77097.
[2022-11-20 12:36:56,404 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77097 states, 77096 states have (on average 1.1167246030922486) internal successors, (86095), 77096 states have internal predecessors, (86095), 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)
[2022-11-20 12:36:56,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77097 states to 77097 states and 86095 transitions.
[2022-11-20 12:36:56,873 INFO  L78                 Accepts]: Start accepts. Automaton has 77097 states and 86095 transitions. Word has length 1827
[2022-11-20 12:36:56,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:36:56,874 INFO  L495      AbstractCegarLoop]: Abstraction has 77097 states and 86095 transitions.
[2022-11-20 12:36:56,874 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 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)
[2022-11-20 12:36:56,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 77097 states and 86095 transitions.
[2022-11-20 12:36:57,208 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1903
[2022-11-20 12:36:57,209 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:36:57,211 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:36:57,211 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-20 12:36:57,212 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:36:57,212 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:36:57,213 INFO  L85        PathProgramCache]: Analyzing trace with hash 786928524, now seen corresponding path program 1 times
[2022-11-20 12:36:57,213 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:36:57,214 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382622751]
[2022-11-20 12:36:57,214 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:36:57,214 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:36:57,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:37:01,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 351 backedges. 270 proven. 70 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2022-11-20 12:37:01,157 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:37:01,157 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382622751]
[2022-11-20 12:37:01,157 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382622751] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-20 12:37:01,158 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951264658]
[2022-11-20 12:37:01,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:37:01,159 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-20 12:37:01,159 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3
[2022-11-20 12:37:01,164 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-20 12:37:01,173 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-20 12:37:02,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:37:02,131 INFO  L263         TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-20 12:37:02,181 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-20 12:37:05,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 351 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2022-11-20 12:37:05,924 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-20 12:37:05,924 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951264658] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:37:05,924 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-20 12:37:05,925 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2022-11-20 12:37:05,926 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256953966]
[2022-11-20 12:37:05,926 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:37:05,930 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:37:05,930 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:37:05,931 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:37:05,931 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2022-11-20 12:37:05,932 INFO  L87              Difference]: Start difference. First operand 77097 states and 86095 transitions. Second operand  has 3 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 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)
[2022-11-20 12:37:14,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:37:14,343 INFO  L93              Difference]: Finished difference Result 152487 states and 170471 transitions.
[2022-11-20 12:37:14,346 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:37:14,346 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 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 1902
[2022-11-20 12:37:14,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:37:14,468 INFO  L225             Difference]: With dead ends: 152487
[2022-11-20 12:37:14,469 INFO  L226             Difference]: Without dead ends: 77090
[2022-11-20 12:37:14,512 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1906 GetRequests, 1901 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2022-11-20 12:37:14,513 INFO  L413           NwaCegarLoop]: 3031 mSDtfsCounter, 424 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 5460 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 3348 SdHoareTripleChecker+Invalid, 6162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 5460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2022-11-20 12:37:14,513 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 3348 Invalid, 6162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 5460 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2022-11-20 12:37:14,614 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77090 states.
[2022-11-20 12:37:15,807 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77090 to 77089.
[2022-11-20 12:37:15,846 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77089 states, 77088 states have (on average 1.1014295350767953) internal successors, (84907), 77088 states have internal predecessors, (84907), 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)
[2022-11-20 12:37:15,954 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77089 states to 77089 states and 84907 transitions.
[2022-11-20 12:37:15,955 INFO  L78                 Accepts]: Start accepts. Automaton has 77089 states and 84907 transitions. Word has length 1902
[2022-11-20 12:37:15,956 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:37:15,957 INFO  L495      AbstractCegarLoop]: Abstraction has 77089 states and 84907 transitions.
[2022-11-20 12:37:15,957 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 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)
[2022-11-20 12:37:15,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 77089 states and 84907 transitions.
[2022-11-20 12:37:16,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2094
[2022-11-20 12:37:16,298 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:37:16,301 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:37:16,311 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-11-20 12:37:16,509 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2022-11-20 12:37:16,510 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:37:16,511 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:37:16,511 INFO  L85        PathProgramCache]: Analyzing trace with hash -577816793, now seen corresponding path program 1 times
[2022-11-20 12:37:16,511 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:37:16,511 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577686019]
[2022-11-20 12:37:16,512 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:37:16,512 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:37:17,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:37:20,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 1016 backedges. 647 proven. 70 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked.
[2022-11-20 12:37:20,597 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:37:20,597 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577686019]
[2022-11-20 12:37:20,597 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577686019] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-20 12:37:20,597 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305347343]
[2022-11-20 12:37:20,598 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:37:20,598 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-20 12:37:20,598 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3
[2022-11-20 12:37:20,601 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-20 12:37:20,603 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-20 12:37:21,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:37:21,571 INFO  L263         TraceCheckSpWp]: Trace formula consists of 2333 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-20 12:37:21,608 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-20 12:37:21,857 INFO  L134       CoverageAnalysis]: Checked inductivity of 1016 backedges. 812 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked.
[2022-11-20 12:37:21,857 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-20 12:37:21,858 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [305347343] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:37:21,858 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-20 12:37:21,859 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2022-11-20 12:37:21,859 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474040373]
[2022-11-20 12:37:21,859 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:37:21,862 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:37:21,862 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:37:21,862 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:37:21,863 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-11-20 12:37:21,863 INFO  L87              Difference]: Start difference. First operand 77089 states and 84907 transitions. Second operand  has 3 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 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)
[2022-11-20 12:37:31,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:37:31,164 INFO  L93              Difference]: Finished difference Result 176253 states and 195298 transitions.
[2022-11-20 12:37:31,164 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:37:31,165 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 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 2093
[2022-11-20 12:37:31,165 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:37:31,290 INFO  L225             Difference]: With dead ends: 176253
[2022-11-20 12:37:31,291 INFO  L226             Difference]: Without dead ends: 100864
[2022-11-20 12:37:31,328 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2097 GetRequests, 2092 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-11-20 12:37:31,329 INFO  L413           NwaCegarLoop]: 1137 mSDtfsCounter, 2697 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4771 mSolverCounterSat, 1723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 6494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1723 IncrementalHoareTripleChecker+Valid, 4771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time
[2022-11-20 12:37:31,329 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 1250 Invalid, 6494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1723 Valid, 4771 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time]
[2022-11-20 12:37:31,438 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100864 states.
[2022-11-20 12:37:32,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100864 to 100861.
[2022-11-20 12:37:32,744 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 100861 states, 100860 states have (on average 1.0958159825500695) internal successors, (110524), 100860 states have internal predecessors, (110524), 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)
[2022-11-20 12:37:32,874 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100861 states to 100861 states and 110524 transitions.
[2022-11-20 12:37:32,875 INFO  L78                 Accepts]: Start accepts. Automaton has 100861 states and 110524 transitions. Word has length 2093
[2022-11-20 12:37:32,875 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:37:32,875 INFO  L495      AbstractCegarLoop]: Abstraction has 100861 states and 110524 transitions.
[2022-11-20 12:37:32,876 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 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)
[2022-11-20 12:37:32,876 INFO  L276                IsEmpty]: Start isEmpty. Operand 100861 states and 110524 transitions.
[2022-11-20 12:37:33,335 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2224
[2022-11-20 12:37:33,350 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:37:33,355 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:37:33,365 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-20 12:37:33,564 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-20 12:37:33,564 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:37:33,565 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:37:33,566 INFO  L85        PathProgramCache]: Analyzing trace with hash -48406635, now seen corresponding path program 1 times
[2022-11-20 12:37:33,566 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:37:33,566 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700523641]
[2022-11-20 12:37:33,566 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:37:33,567 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:37:33,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:37:38,199 INFO  L134       CoverageAnalysis]: Checked inductivity of 1158 backedges. 660 proven. 70 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2022-11-20 12:37:38,199 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:37:38,199 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700523641]
[2022-11-20 12:37:38,200 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700523641] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-20 12:37:38,200 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865111058]
[2022-11-20 12:37:38,200 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:37:38,201 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-20 12:37:38,201 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3
[2022-11-20 12:37:38,203 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-20 12:37:38,214 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-20 12:37:39,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:37:39,320 INFO  L263         TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-20 12:37:39,350 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-20 12:37:39,854 INFO  L134       CoverageAnalysis]: Checked inductivity of 1158 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked.
[2022-11-20 12:37:39,854 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-20 12:37:39,855 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [865111058] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:37:39,855 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-20 12:37:39,856 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2022-11-20 12:37:39,856 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782133566]
[2022-11-20 12:37:39,856 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:37:39,859 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:37:39,859 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:37:39,860 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:37:39,860 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-11-20 12:37:39,861 INFO  L87              Difference]: Start difference. First operand 100861 states and 110524 transitions. Second operand  has 3 states, 3 states have (on average 673.6666666666666) internal successors, (2021), 3 states have internal predecessors, (2021), 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)
[2022-11-20 12:37:49,084 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:37:49,084 INFO  L93              Difference]: Finished difference Result 200029 states and 219347 transitions.
[2022-11-20 12:37:49,084 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:37:49,085 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 673.6666666666666) internal successors, (2021), 3 states have internal predecessors, (2021), 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 2223
[2022-11-20 12:37:49,086 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:37:49,192 INFO  L225             Difference]: With dead ends: 200029
[2022-11-20 12:37:49,193 INFO  L226             Difference]: Without dead ends: 100868
[2022-11-20 12:37:49,218 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2227 GetRequests, 2222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-11-20 12:37:49,219 INFO  L413           NwaCegarLoop]: 1163 mSDtfsCounter, 2001 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 5650 mSolverCounterSat, 987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 6637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 987 IncrementalHoareTripleChecker+Valid, 5650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2022-11-20 12:37:49,219 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2001 Valid, 1352 Invalid, 6637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [987 Valid, 5650 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2022-11-20 12:37:49,299 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100868 states.
[2022-11-20 12:37:50,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100868 to 100860.
[2022-11-20 12:37:50,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 100860 states, 100859 states have (on average 1.0801614134583923) internal successors, (108944), 100859 states have internal predecessors, (108944), 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)
[2022-11-20 12:37:51,152 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100860 states to 100860 states and 108944 transitions.
[2022-11-20 12:37:51,152 INFO  L78                 Accepts]: Start accepts. Automaton has 100860 states and 108944 transitions. Word has length 2223
[2022-11-20 12:37:51,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:37:51,153 INFO  L495      AbstractCegarLoop]: Abstraction has 100860 states and 108944 transitions.
[2022-11-20 12:37:51,154 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 673.6666666666666) internal successors, (2021), 3 states have internal predecessors, (2021), 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)
[2022-11-20 12:37:51,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 100860 states and 108944 transitions.
[2022-11-20 12:37:51,267 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2226
[2022-11-20 12:37:51,267 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:37:51,268 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:37:51,275 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-11-20 12:37:51,469 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e199b02b-9bdc-45a4-856a-214837fcf781/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-20 12:37:51,469 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:37:51,470 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:37:51,470 INFO  L85        PathProgramCache]: Analyzing trace with hash -945160505, now seen corresponding path program 1 times
[2022-11-20 12:37:51,471 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:37:51,471 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827801032]
[2022-11-20 12:37:51,471 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:37:51,471 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:37:51,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:37:53,858 INFO  L134       CoverageAnalysis]: Checked inductivity of 1188 backedges. 743 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked.
[2022-11-20 12:37:53,859 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:37:53,859 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827801032]
[2022-11-20 12:37:53,859 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827801032] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:37:53,859 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:37:53,860 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-20 12:37:53,860 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728877435]
[2022-11-20 12:37:53,860 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:37:53,862 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:37:53,863 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:37:53,863 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:37:53,863 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-20 12:37:53,864 INFO  L87              Difference]: Start difference. First operand 100860 states and 108944 transitions. Second operand  has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 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)
[2022-11-20 12:38:02,643 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:38:02,643 INFO  L93              Difference]: Finished difference Result 200023 states and 216180 transitions.
[2022-11-20 12:38:02,644 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:38:02,644 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 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 2225
[2022-11-20 12:38:02,645 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:38:02,756 INFO  L225             Difference]: With dead ends: 200023
[2022-11-20 12:38:02,756 INFO  L226             Difference]: Without dead ends: 100863
[2022-11-20 12:38:02,788 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
[2022-11-20 12:38:02,789 INFO  L413           NwaCegarLoop]: 3471 mSDtfsCounter, 1762 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 5470 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 6059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 5470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2022-11-20 12:38:02,789 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 3860 Invalid, 6059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 5470 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time]
[2022-11-20 12:38:02,874 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100863 states.
[2022-11-20 12:38:04,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100863 to 100860.
[2022-11-20 12:38:04,279 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 100860 states, 100859 states have (on average 1.0665979238342638) internal successors, (107576), 100859 states have internal predecessors, (107576), 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)
[2022-11-20 12:38:04,475 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100860 states to 100860 states and 107576 transitions.
[2022-11-20 12:38:04,476 INFO  L78                 Accepts]: Start accepts. Automaton has 100860 states and 107576 transitions. Word has length 2225
[2022-11-20 12:38:04,476 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:38:04,477 INFO  L495      AbstractCegarLoop]: Abstraction has 100860 states and 107576 transitions.
[2022-11-20 12:38:04,477 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 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)
[2022-11-20 12:38:04,477 INFO  L276                IsEmpty]: Start isEmpty. Operand 100860 states and 107576 transitions.
[2022-11-20 12:38:04,658 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2235
[2022-11-20 12:38:04,658 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:38:04,660 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:38:04,660 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-11-20 12:38:04,660 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:38:04,661 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:38:04,662 INFO  L85        PathProgramCache]: Analyzing trace with hash 1870933722, now seen corresponding path program 1 times
[2022-11-20 12:38:04,662 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:38:04,663 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760307264]
[2022-11-20 12:38:04,663 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:38:04,664 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:38:05,030 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:38:11,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 1011 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2022-11-20 12:38:11,597 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:38:11,597 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760307264]
[2022-11-20 12:38:11,598 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760307264] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:38:11,598 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:38:11,598 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-20 12:38:11,599 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329032994]
[2022-11-20 12:38:11,599 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:38:11,601 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-20 12:38:11,601 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:38:11,602 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-20 12:38:11,602 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-20 12:38:11,603 INFO  L87              Difference]: Start difference. First operand 100860 states and 107576 transitions. Second operand  has 5 states, 5 states have (on average 381.4) internal successors, (1907), 5 states have internal predecessors, (1907), 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)
[2022-11-20 12:38:23,953 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:38:23,953 INFO  L93              Difference]: Finished difference Result 224105 states and 238670 transitions.
[2022-11-20 12:38:23,954 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-20 12:38:23,954 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 381.4) internal successors, (1907), 5 states have internal predecessors, (1907), 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 2234
[2022-11-20 12:38:23,955 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:38:24,080 INFO  L225             Difference]: With dead ends: 224105
[2022-11-20 12:38:24,080 INFO  L226             Difference]: Without dead ends: 124945
[2022-11-20 12:38:24,111 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2022-11-20 12:38:24,112 INFO  L413           NwaCegarLoop]: 3939 mSDtfsCounter, 3527 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 8396 mSolverCounterSat, 2204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 4413 SdHoareTripleChecker+Invalid, 10600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2204 IncrementalHoareTripleChecker+Valid, 8396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time
[2022-11-20 12:38:24,112 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 4413 Invalid, 10600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2204 Valid, 8396 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time]
[2022-11-20 12:38:24,215 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124945 states.
[2022-11-20 12:38:25,508 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124945 to 124632.
[2022-11-20 12:38:25,580 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 124632 states, 124631 states have (on average 1.0554597170848343) internal successors, (131543), 124631 states have internal predecessors, (131543), 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)
[2022-11-20 12:38:26,337 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124632 states to 124632 states and 131543 transitions.
[2022-11-20 12:38:26,338 INFO  L78                 Accepts]: Start accepts. Automaton has 124632 states and 131543 transitions. Word has length 2234
[2022-11-20 12:38:26,338 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:38:26,339 INFO  L495      AbstractCegarLoop]: Abstraction has 124632 states and 131543 transitions.
[2022-11-20 12:38:26,339 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 381.4) internal successors, (1907), 5 states have internal predecessors, (1907), 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)
[2022-11-20 12:38:26,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 124632 states and 131543 transitions.
[2022-11-20 12:38:26,555 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2266
[2022-11-20 12:38:26,556 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:38:26,557 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:38:26,557 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-11-20 12:38:26,558 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:38:26,558 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:38:26,559 INFO  L85        PathProgramCache]: Analyzing trace with hash -546453227, now seen corresponding path program 1 times
[2022-11-20 12:38:26,559 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:38:26,559 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649547119]
[2022-11-20 12:38:26,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:38:26,560 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-20 12:38:26,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-20 12:38:30,660 INFO  L134       CoverageAnalysis]: Checked inductivity of 1445 backedges. 856 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked.
[2022-11-20 12:38:30,660 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-20 12:38:30,660 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649547119]
[2022-11-20 12:38:30,660 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649547119] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-20 12:38:30,660 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-20 12:38:30,661 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-20 12:38:30,661 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462114001]
[2022-11-20 12:38:30,661 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-20 12:38:30,663 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-20 12:38:30,663 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-20 12:38:30,663 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-20 12:38:30,663 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-20 12:38:30,664 INFO  L87              Difference]: Start difference. First operand 124632 states and 131543 transitions. Second operand  has 3 states, 3 states have (on average 621.0) internal successors, (1863), 3 states have internal predecessors, (1863), 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)
[2022-11-20 12:38:41,574 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-20 12:38:41,575 INFO  L93              Difference]: Finished difference Result 286696 states and 304192 transitions.
[2022-11-20 12:38:41,575 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-20 12:38:41,575 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 621.0) internal successors, (1863), 3 states have internal predecessors, (1863), 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 2265
[2022-11-20 12:38:41,576 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-20 12:38:41,744 INFO  L225             Difference]: With dead ends: 286696
[2022-11-20 12:38:41,744 INFO  L226             Difference]: Without dead ends: 163764
[2022-11-20 12:38:41,790 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
[2022-11-20 12:38:41,790 INFO  L413           NwaCegarLoop]: 3822 mSDtfsCounter, 1783 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 6108 mSolverCounterSat, 1121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 7229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1121 IncrementalHoareTripleChecker+Valid, 6108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time
[2022-11-20 12:38:41,791 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 4045 Invalid, 7229 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1121 Valid, 6108 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time]
[2022-11-20 12:38:41,930 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163764 states.
[2022-11-20 12:38:43,824 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163764 to 163694.
[2022-11-20 12:38:43,916 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163694 states, 163693 states have (on average 1.0509734686272474) internal successors, (172037), 163693 states have internal predecessors, (172037), 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)
[2022-11-20 12:38:44,102 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163694 states to 163694 states and 172037 transitions.
[2022-11-20 12:38:44,102 INFO  L78                 Accepts]: Start accepts. Automaton has 163694 states and 172037 transitions. Word has length 2265
[2022-11-20 12:38:44,103 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-20 12:38:44,103 INFO  L495      AbstractCegarLoop]: Abstraction has 163694 states and 172037 transitions.
[2022-11-20 12:38:44,103 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 621.0) internal successors, (1863), 3 states have internal predecessors, (1863), 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)
[2022-11-20 12:38:44,103 INFO  L276                IsEmpty]: Start isEmpty. Operand 163694 states and 172037 transitions.
[2022-11-20 12:38:45,108 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2342
[2022-11-20 12:38:45,108 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-20 12:38:45,110 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-20 12:38:45,111 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-11-20 12:38:45,111 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-20 12:38:45,111 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-20 12:38:45,112 INFO  L85        PathProgramCache]: Analyzing trace with hash 1572714697, now seen corresponding path program 1 times
[2022-11-20 12:38:45,113 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-20 12:38:45,113 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930474978]
[2022-11-20 12:38:45,114 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-20 12:38:45,114 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms