./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label04.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version e04fb08f
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_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8 --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 b073191c71c477032fc88b3443bd70cba3b8be3aa40f986d5264f55b2d1b110e
--- 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-e04fb08
[2022-11-16 11:52:00,478 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-16 11:52:00,480 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-16 11:52:00,516 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-16 11:52:00,516 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-16 11:52:00,517 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-16 11:52:00,519 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-16 11:52:00,521 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-16 11:52:00,523 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-16 11:52:00,524 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-16 11:52:00,525 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-16 11:52:00,526 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-16 11:52:00,527 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-16 11:52:00,528 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-16 11:52:00,529 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-16 11:52:00,530 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-16 11:52:00,531 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-16 11:52:00,532 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-16 11:52:00,534 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-16 11:52:00,536 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-16 11:52:00,538 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-16 11:52:00,545 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-16 11:52:00,546 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-16 11:52:00,548 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-16 11:52:00,554 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-16 11:52:00,562 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-16 11:52:00,562 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-16 11:52:00,563 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-16 11:52:00,564 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-16 11:52:00,565 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-16 11:52:00,565 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-16 11:52:00,566 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-16 11:52:00,567 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-16 11:52:00,568 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-16 11:52:00,571 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-16 11:52:00,571 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-16 11:52:00,572 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-16 11:52:00,574 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-16 11:52:00,574 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-16 11:52:00,576 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-16 11:52:00,577 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-16 11:52:00,578 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-16 11:52:00,608 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-16 11:52:00,608 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-16 11:52:00,609 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-16 11:52:00,609 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-16 11:52:00,610 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-16 11:52:00,610 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-16 11:52:00,611 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-16 11:52:00,611 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-16 11:52:00,612 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-16 11:52:00,612 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-16 11:52:00,613 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-16 11:52:00,613 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-16 11:52:00,614 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-16 11:52:00,614 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-16 11:52:00,614 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-16 11:52:00,614 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-16 11:52:00,615 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-16 11:52:00,615 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-16 11:52:00,615 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-16 11:52:00,616 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-16 11:52:00,616 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-16 11:52:00,616 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-16 11:52:00,616 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-16 11:52:00,617 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-16 11:52:00,617 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-16 11:52:00,617 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-16 11:52:00,617 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-16 11:52:00,617 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-16 11:52:00,618 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-16 11:52:00,618 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-16 11:52:00,618 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-16 11:52:00,618 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-16 11:52:00,619 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-16 11:52:00,619 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_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/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_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8
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 -> b073191c71c477032fc88b3443bd70cba3b8be3aa40f986d5264f55b2d1b110e
[2022-11-16 11:52:00,929 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-16 11:52:00,967 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-16 11:52:00,971 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-16 11:52:00,973 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-16 11:52:00,974 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-16 11:52:00,975 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem19_label04.c
[2022-11-16 11:52:01,051 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/data/efdadfe1d/1f556c014d3e4034bbe7e81189aa407b/FLAGe48f49d8e
[2022-11-16 11:52:02,029 INFO  L306              CDTParser]: Found 1 translation units.
[2022-11-16 11:52:02,029 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/sv-benchmarks/c/eca-rers2012/Problem19_label04.c
[2022-11-16 11:52:02,073 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/data/efdadfe1d/1f556c014d3e4034bbe7e81189aa407b/FLAGe48f49d8e
[2022-11-16 11:52:02,385 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/data/efdadfe1d/1f556c014d3e4034bbe7e81189aa407b
[2022-11-16 11:52:02,387 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-16 11:52:02,391 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-16 11:52:02,393 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-16 11:52:02,394 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-16 11:52:02,397 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-16 11:52:02,401 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:52:02" (1/1) ...
[2022-11-16 11:52:02,403 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69309573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:02, skipping insertion in model container
[2022-11-16 11:52:02,403 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:52:02" (1/1) ...
[2022-11-16 11:52:02,410 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-16 11:52:02,613 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-16 11:52:03,045 WARN  L229   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_9d958eff-c433-4c77-a5c6-d161b128e111/sv-benchmarks/c/eca-rers2012/Problem19_label04.c[8051,8064]
[2022-11-16 11:52:04,872 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-16 11:52:04,911 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-16 11:52:04,950 WARN  L229   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_9d958eff-c433-4c77-a5c6-d161b128e111/sv-benchmarks/c/eca-rers2012/Problem19_label04.c[8051,8064]
[2022-11-16 11:52:05,994 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-16 11:52:06,032 INFO  L208         MainTranslator]: Completed translation
[2022-11-16 11:52:06,033 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06 WrapperNode
[2022-11-16 11:52:06,033 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-16 11:52:06,034 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-16 11:52:06,034 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-16 11:52:06,035 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-16 11:52:06,042 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:06,181 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:07,084 INFO  L138                Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425
[2022-11-16 11:52:07,084 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-16 11:52:07,085 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-16 11:52:07,085 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-16 11:52:07,085 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-16 11:52:07,093 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:07,093 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:07,314 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:07,315 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:07,849 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:07,942 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:08,148 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:08,200 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:08,435 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-16 11:52:08,437 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-16 11:52:08,438 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-16 11:52:08,438 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-16 11:52:08,439 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (1/1) ...
[2022-11-16 11:52:08,445 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-16 11:52:08,459 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3
[2022-11-16 11:52:08,472 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-16 11:52:08,501 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-16 11:52:08,527 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-16 11:52:08,528 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-16 11:52:08,528 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-16 11:52:08,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-16 11:52:08,632 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-16 11:52:08,634 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-16 11:52:19,056 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-16 11:52:19,091 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-16 11:52:19,091 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-16 11:52:19,098 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:52:19 BoogieIcfgContainer
[2022-11-16 11:52:19,098 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-16 11:52:19,102 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-16 11:52:19,102 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-16 11:52:19,106 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-16 11:52:19,106 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:52:02" (1/3) ...
[2022-11-16 11:52:19,107 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c31eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:52:19, skipping insertion in model container
[2022-11-16 11:52:19,108 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:52:06" (2/3) ...
[2022-11-16 11:52:19,108 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c31eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:52:19, skipping insertion in model container
[2022-11-16 11:52:19,108 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:52:19" (3/3) ...
[2022-11-16 11:52:19,110 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem19_label04.c
[2022-11-16 11:52:19,135 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-16 11:52:19,136 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-16 11:52:19,280 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-16 11:52:19,290 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;@3ee2cae0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-16 11:52:19,290 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-16 11:52:19,303 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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)
[2022-11-16 11:52:19,315 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2022-11-16 11:52:19,315 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:52:19,316 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]
[2022-11-16 11:52:19,317 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:52:19,324 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:52:19,325 INFO  L85        PathProgramCache]: Analyzing trace with hash 531730986, now seen corresponding path program 1 times
[2022-11-16 11:52:19,334 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:52:19,335 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094050169]
[2022-11-16 11:52:19,335 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:52:19,335 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:52:19,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:52:20,041 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:52:20,042 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:52:20,042 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094050169]
[2022-11-16 11:52:20,043 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094050169] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:52:20,044 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:52:20,044 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:52:20,045 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484561953]
[2022-11-16 11:52:20,046 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:52:20,051 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 11:52:20,051 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:52:20,079 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 11:52:20,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-16 11:52:20,088 INFO  L87              Difference]: Start difference. First operand  has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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)
[2022-11-16 11:52:39,449 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:52:39,449 INFO  L93              Difference]: Finished difference Result 6284 states and 12039 transitions.
[2022-11-16 11:52:39,451 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-16 11:52:39,452 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 62
[2022-11-16 11:52:39,453 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:52:39,498 INFO  L225             Difference]: With dead ends: 6284
[2022-11-16 11:52:39,499 INFO  L226             Difference]: Without dead ends: 4467
[2022-11-16 11:52:39,509 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-16 11:52:39,519 INFO  L413           NwaCegarLoop]: 1812 mSDtfsCounter, 4217 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10828 mSolverCounterSat, 2355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 13183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2355 IncrementalHoareTripleChecker+Valid, 10828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time
[2022-11-16 11:52:39,521 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4217 Valid, 2090 Invalid, 13183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2355 Valid, 10828 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time]
[2022-11-16 11:52:39,546 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4467 states.
[2022-11-16 11:52:39,705 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4465.
[2022-11-16 11:52:39,714 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4465 states, 4464 states have (on average 1.564516129032258) internal successors, (6984), 4464 states have internal predecessors, (6984), 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)
[2022-11-16 11:52:39,729 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 6984 transitions.
[2022-11-16 11:52:39,731 INFO  L78                 Accepts]: Start accepts. Automaton has 4465 states and 6984 transitions. Word has length 62
[2022-11-16 11:52:39,732 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:52:39,732 INFO  L495      AbstractCegarLoop]: Abstraction has 4465 states and 6984 transitions.
[2022-11-16 11:52:39,732 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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)
[2022-11-16 11:52:39,732 INFO  L276                IsEmpty]: Start isEmpty. Operand 4465 states and 6984 transitions.
[2022-11-16 11:52:39,738 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 270
[2022-11-16 11:52:39,739 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:52:39,739 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-16 11:52:39,740 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-16 11:52:39,740 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:52:39,740 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:52:39,741 INFO  L85        PathProgramCache]: Analyzing trace with hash -1558940055, now seen corresponding path program 1 times
[2022-11-16 11:52:39,741 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:52:39,741 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298324236]
[2022-11-16 11:52:39,742 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:52:39,742 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:52:39,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:52:40,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:52:40,908 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:52:40,909 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298324236]
[2022-11-16 11:52:40,909 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298324236] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:52:40,909 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:52:40,910 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:52:40,910 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015069334]
[2022-11-16 11:52:40,911 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:52:40,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 11:52:40,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:52:40,915 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 11:52:40,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-16 11:52:40,916 INFO  L87              Difference]: Start difference. First operand 4465 states and 6984 transitions. Second operand  has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 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)
[2022-11-16 11:52:56,255 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:52:56,255 INFO  L93              Difference]: Finished difference Result 11706 states and 20175 transitions.
[2022-11-16 11:52:56,258 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-16 11:52:56,259 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 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 269
[2022-11-16 11:52:56,260 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:52:56,294 INFO  L225             Difference]: With dead ends: 11706
[2022-11-16 11:52:56,294 INFO  L226             Difference]: Without dead ends: 8608
[2022-11-16 11:52:56,305 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-16 11:52:56,306 INFO  L413           NwaCegarLoop]: 1803 mSDtfsCounter, 3756 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 1337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 10792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1337 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time
[2022-11-16 11:52:56,307 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2157 Invalid, 10792 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1337 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time]
[2022-11-16 11:52:56,324 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8608 states.
[2022-11-16 11:52:56,466 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 8594.
[2022-11-16 11:52:56,480 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8594 states, 8593 states have (on average 1.3480740137321074) internal successors, (11584), 8593 states have internal predecessors, (11584), 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)
[2022-11-16 11:52:56,496 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11584 transitions.
[2022-11-16 11:52:56,496 INFO  L78                 Accepts]: Start accepts. Automaton has 8594 states and 11584 transitions. Word has length 269
[2022-11-16 11:52:56,502 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:52:56,503 INFO  L495      AbstractCegarLoop]: Abstraction has 8594 states and 11584 transitions.
[2022-11-16 11:52:56,503 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 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)
[2022-11-16 11:52:56,504 INFO  L276                IsEmpty]: Start isEmpty. Operand 8594 states and 11584 transitions.
[2022-11-16 11:52:56,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 298
[2022-11-16 11:52:56,515 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:52:56,516 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-16 11:52:56,519 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-16 11:52:56,520 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:52:56,521 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:52:56,527 INFO  L85        PathProgramCache]: Analyzing trace with hash 425814467, now seen corresponding path program 1 times
[2022-11-16 11:52:56,527 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:52:56,527 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156556202]
[2022-11-16 11:52:56,527 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:52:56,528 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:52:56,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:52:57,342 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:52:57,345 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:52:57,345 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156556202]
[2022-11-16 11:52:57,345 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156556202] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:52:57,346 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:52:57,346 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:52:57,347 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782494437]
[2022-11-16 11:52:57,347 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:52:57,348 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 11:52:57,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:52:57,349 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 11:52:57,349 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-16 11:52:57,350 INFO  L87              Difference]: Start difference. First operand 8594 states and 11584 transitions. Second operand  has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 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)
[2022-11-16 11:53:06,009 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:53:06,010 INFO  L93              Difference]: Finished difference Result 14487 states and 20449 transitions.
[2022-11-16 11:53:06,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-16 11:53:06,010 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 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 297
[2022-11-16 11:53:06,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:53:06,040 INFO  L225             Difference]: With dead ends: 14487
[2022-11-16 11:53:06,041 INFO  L226             Difference]: Without dead ends: 8594
[2022-11-16 11:53:06,049 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
[2022-11-16 11:53:06,050 INFO  L413           NwaCegarLoop]: 1775 mSDtfsCounter, 1153 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5715 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 5723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time
[2022-11-16 11:53:06,051 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 1954 Invalid, 5723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5715 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time]
[2022-11-16 11:53:06,062 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8594 states.
[2022-11-16 11:53:06,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 8594.
[2022-11-16 11:53:06,250 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8594 states, 8593 states have (on average 1.3465611544280227) internal successors, (11571), 8593 states have internal predecessors, (11571), 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)
[2022-11-16 11:53:06,270 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11571 transitions.
[2022-11-16 11:53:06,270 INFO  L78                 Accepts]: Start accepts. Automaton has 8594 states and 11571 transitions. Word has length 297
[2022-11-16 11:53:06,271 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:53:06,271 INFO  L495      AbstractCegarLoop]: Abstraction has 8594 states and 11571 transitions.
[2022-11-16 11:53:06,271 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 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)
[2022-11-16 11:53:06,272 INFO  L276                IsEmpty]: Start isEmpty. Operand 8594 states and 11571 transitions.
[2022-11-16 11:53:06,289 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 619
[2022-11-16 11:53:06,290 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:53:06,290 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:53:06,291 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-16 11:53:06,291 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:53:06,292 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:53:06,292 INFO  L85        PathProgramCache]: Analyzing trace with hash 441776488, now seen corresponding path program 1 times
[2022-11-16 11:53:06,293 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:53:06,293 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153815931]
[2022-11-16 11:53:06,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:53:06,294 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:53:06,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:53:07,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked.
[2022-11-16 11:53:07,239 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:53:07,239 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153815931]
[2022-11-16 11:53:07,239 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153815931] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:53:07,239 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:53:07,239 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-16 11:53:07,240 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629244051]
[2022-11-16 11:53:07,240 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:53:07,241 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:53:07,241 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:53:07,241 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:53:07,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:53:07,242 INFO  L87              Difference]: Start difference. First operand 8594 states and 11571 transitions. Second operand  has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 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)
[2022-11-16 11:53:16,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:53:16,165 INFO  L93              Difference]: Finished difference Result 20123 states and 28981 transitions.
[2022-11-16 11:53:16,166 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:53:16,167 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 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 618
[2022-11-16 11:53:16,168 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:53:16,206 INFO  L225             Difference]: With dead ends: 20123
[2022-11-16 11:53:16,206 INFO  L226             Difference]: Without dead ends: 14261
[2022-11-16 11:53:16,212 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
[2022-11-16 11:53:16,213 INFO  L413           NwaCegarLoop]: 1338 mSDtfsCounter, 1356 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time
[2022-11-16 11:53:16,214 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1610 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time]
[2022-11-16 11:53:16,231 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14261 states.
[2022-11-16 11:53:16,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 14244.
[2022-11-16 11:53:16,435 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14244 states, 14243 states have (on average 1.2722038896299936) internal successors, (18120), 14243 states have internal predecessors, (18120), 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)
[2022-11-16 11:53:16,458 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14244 states to 14244 states and 18120 transitions.
[2022-11-16 11:53:16,458 INFO  L78                 Accepts]: Start accepts. Automaton has 14244 states and 18120 transitions. Word has length 618
[2022-11-16 11:53:16,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:53:16,460 INFO  L495      AbstractCegarLoop]: Abstraction has 14244 states and 18120 transitions.
[2022-11-16 11:53:16,461 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 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)
[2022-11-16 11:53:16,462 INFO  L276                IsEmpty]: Start isEmpty. Operand 14244 states and 18120 transitions.
[2022-11-16 11:53:16,477 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 624
[2022-11-16 11:53:16,477 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:53:16,478 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:53:16,478 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-16 11:53:16,478 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:53:16,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:53:16,480 INFO  L85        PathProgramCache]: Analyzing trace with hash -151081111, now seen corresponding path program 1 times
[2022-11-16 11:53:16,480 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:53:16,480 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363243685]
[2022-11-16 11:53:16,481 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:53:16,481 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:53:16,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:53:17,118 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2022-11-16 11:53:17,118 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:53:17,118 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363243685]
[2022-11-16 11:53:17,119 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363243685] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:53:17,119 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:53:17,119 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-16 11:53:17,120 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373580363]
[2022-11-16 11:53:17,121 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:53:17,122 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:53:17,122 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:53:17,122 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:53:17,122 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:53:17,123 INFO  L87              Difference]: Start difference. First operand 14244 states and 18120 transitions. Second operand  has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 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)
[2022-11-16 11:53:25,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:53:25,036 INFO  L93              Difference]: Finished difference Result 28511 states and 37629 transitions.
[2022-11-16 11:53:25,038 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:53:25,038 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 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 623
[2022-11-16 11:53:25,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:53:25,077 INFO  L225             Difference]: With dead ends: 28511
[2022-11-16 11:53:25,078 INFO  L226             Difference]: Without dead ends: 16999
[2022-11-16 11:53:25,091 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
[2022-11-16 11:53:25,092 INFO  L413           NwaCegarLoop]: 706 mSDtfsCounter, 1387 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 2123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2123 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2022-11-16 11:53:25,093 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 757 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2123 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2022-11-16 11:53:25,110 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16999 states.
[2022-11-16 11:53:25,296 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16999 to 16985.
[2022-11-16 11:53:25,315 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16985 states, 16984 states have (on average 1.2707253886010363) internal successors, (21582), 16984 states have internal predecessors, (21582), 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)
[2022-11-16 11:53:25,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16985 states to 16985 states and 21582 transitions.
[2022-11-16 11:53:25,339 INFO  L78                 Accepts]: Start accepts. Automaton has 16985 states and 21582 transitions. Word has length 623
[2022-11-16 11:53:25,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:53:25,341 INFO  L495      AbstractCegarLoop]: Abstraction has 16985 states and 21582 transitions.
[2022-11-16 11:53:25,345 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 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)
[2022-11-16 11:53:25,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 16985 states and 21582 transitions.
[2022-11-16 11:53:25,361 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 627
[2022-11-16 11:53:25,361 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:53:25,362 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:53:25,362 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-16 11:53:25,363 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:53:25,363 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:53:25,364 INFO  L85        PathProgramCache]: Analyzing trace with hash -2113925292, now seen corresponding path program 1 times
[2022-11-16 11:53:25,364 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:53:25,364 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949931717]
[2022-11-16 11:53:25,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:53:25,365 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:53:25,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:53:26,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 195 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2022-11-16 11:53:26,094 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:53:26,094 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949931717]
[2022-11-16 11:53:26,094 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949931717] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:53:26,094 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:53:26,094 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-16 11:53:26,095 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009310716]
[2022-11-16 11:53:26,095 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:53:26,096 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:53:26,096 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:53:26,096 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:53:26,096 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:53:26,097 INFO  L87              Difference]: Start difference. First operand 16985 states and 21582 transitions. Second operand  has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 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)
[2022-11-16 11:53:35,281 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:53:35,281 INFO  L93              Difference]: Finished difference Result 43710 states and 57265 transitions.
[2022-11-16 11:53:35,282 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:53:35,282 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 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 626
[2022-11-16 11:53:35,283 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:53:35,345 INFO  L225             Difference]: With dead ends: 43710
[2022-11-16 11:53:35,345 INFO  L226             Difference]: Without dead ends: 29457
[2022-11-16 11:53:35,363 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
[2022-11-16 11:53:35,364 INFO  L413           NwaCegarLoop]: 715 mSDtfsCounter, 2112 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5114 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time
[2022-11-16 11:53:35,364 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 985 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5114 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time]
[2022-11-16 11:53:35,392 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29457 states.
[2022-11-16 11:53:35,705 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29457 to 29454.
[2022-11-16 11:53:35,736 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29454 states, 29453 states have (on average 1.255593657691916) internal successors, (36981), 29453 states have internal predecessors, (36981), 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)
[2022-11-16 11:53:35,777 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29454 states to 29454 states and 36981 transitions.
[2022-11-16 11:53:35,777 INFO  L78                 Accepts]: Start accepts. Automaton has 29454 states and 36981 transitions. Word has length 626
[2022-11-16 11:53:35,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:53:35,779 INFO  L495      AbstractCegarLoop]: Abstraction has 29454 states and 36981 transitions.
[2022-11-16 11:53:35,779 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 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)
[2022-11-16 11:53:35,779 INFO  L276                IsEmpty]: Start isEmpty. Operand 29454 states and 36981 transitions.
[2022-11-16 11:53:35,793 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 654
[2022-11-16 11:53:35,793 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:53:35,794 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:53:35,794 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-16 11:53:35,794 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:53:35,794 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:53:35,795 INFO  L85        PathProgramCache]: Analyzing trace with hash 87944464, now seen corresponding path program 1 times
[2022-11-16 11:53:35,795 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:53:35,795 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646418858]
[2022-11-16 11:53:35,795 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:53:35,796 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:53:35,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:53:37,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 222 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:53:37,238 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:53:37,238 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646418858]
[2022-11-16 11:53:37,238 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646418858] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:53:37,238 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:53:37,238 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-16 11:53:37,239 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283018748]
[2022-11-16 11:53:37,239 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:53:37,240 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-16 11:53:37,240 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:53:37,240 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-16 11:53:37,240 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2022-11-16 11:53:37,241 INFO  L87              Difference]: Start difference. First operand 29454 states and 36981 transitions. Second operand  has 5 states, 5 states have (on average 130.6) internal successors, (653), 4 states have internal predecessors, (653), 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)
[2022-11-16 11:53:48,460 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:53:48,461 INFO  L93              Difference]: Finished difference Result 63039 states and 78524 transitions.
[2022-11-16 11:53:48,461 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-16 11:53:48,461 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 130.6) internal successors, (653), 4 states have internal predecessors, (653), 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 653
[2022-11-16 11:53:48,462 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:53:48,504 INFO  L225             Difference]: With dead ends: 63039
[2022-11-16 11:53:48,505 INFO  L226             Difference]: Without dead ends: 36291
[2022-11-16 11:53:48,522 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2022-11-16 11:53:48,523 INFO  L413           NwaCegarLoop]: 1653 mSDtfsCounter, 2281 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 10030 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 10217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 10030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time
[2022-11-16 11:53:48,523 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 1870 Invalid, 10217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 10030 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time]
[2022-11-16 11:53:48,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36291 states.
[2022-11-16 11:53:48,916 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36291 to 36286.
[2022-11-16 11:53:48,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36286 states, 36285 states have (on average 1.2146617059390934) internal successors, (44074), 36285 states have internal predecessors, (44074), 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)
[2022-11-16 11:53:48,999 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36286 states to 36286 states and 44074 transitions.
[2022-11-16 11:53:49,000 INFO  L78                 Accepts]: Start accepts. Automaton has 36286 states and 44074 transitions. Word has length 653
[2022-11-16 11:53:49,001 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:53:49,001 INFO  L495      AbstractCegarLoop]: Abstraction has 36286 states and 44074 transitions.
[2022-11-16 11:53:49,001 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 130.6) internal successors, (653), 4 states have internal predecessors, (653), 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)
[2022-11-16 11:53:49,001 INFO  L276                IsEmpty]: Start isEmpty. Operand 36286 states and 44074 transitions.
[2022-11-16 11:53:49,008 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 757
[2022-11-16 11:53:49,008 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:53:49,009 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-16 11:53:49,009 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-16 11:53:49,009 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:53:49,010 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:53:49,010 INFO  L85        PathProgramCache]: Analyzing trace with hash 686346711, now seen corresponding path program 1 times
[2022-11-16 11:53:49,010 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:53:49,010 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946284859]
[2022-11-16 11:53:49,011 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:53:49,011 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:53:49,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:53:52,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 325 backedges. 119 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:53:52,188 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:53:52,188 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946284859]
[2022-11-16 11:53:52,188 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946284859] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-16 11:53:52,189 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014942051]
[2022-11-16 11:53:52,189 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:53:52,189 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-16 11:53:52,189 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3
[2022-11-16 11:53:52,193 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-16 11:53:52,199 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-16 11:53:52,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:53:52,540 INFO  L263         TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-11-16 11:53:52,571 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-16 11:53:54,171 INFO  L134       CoverageAnalysis]: Checked inductivity of 325 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:53:54,171 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-16 11:53:54,172 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014942051] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:53:54,172 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-16 11:53:54,172 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9
[2022-11-16 11:53:54,173 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431235181]
[2022-11-16 11:53:54,173 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:53:54,174 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 11:53:54,174 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:53:54,174 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 11:53:54,175 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2022-11-16 11:53:54,175 INFO  L87              Difference]: Start difference. First operand 36286 states and 44074 transitions. Second operand  has 4 states, 4 states have (on average 189.0) internal successors, (756), 3 states have internal predecessors, (756), 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)
[2022-11-16 11:54:06,815 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:54:06,815 INFO  L93              Difference]: Finished difference Result 80875 states and 100447 transitions.
[2022-11-16 11:54:06,816 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-16 11:54:06,816 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 189.0) internal successors, (756), 3 states have internal predecessors, (756), 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 756
[2022-11-16 11:54:06,817 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:54:06,864 INFO  L225             Difference]: With dead ends: 80875
[2022-11-16 11:54:06,864 INFO  L226             Difference]: Without dead ends: 47321
[2022-11-16 11:54:06,884 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2022-11-16 11:54:06,885 INFO  L413           NwaCegarLoop]: 763 mSDtfsCounter, 2743 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7440 mSolverCounterSat, 4146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 11586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4146 IncrementalHoareTripleChecker+Valid, 7440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time
[2022-11-16 11:54:06,886 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2743 Valid, 966 Invalid, 11586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4146 Valid, 7440 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time]
[2022-11-16 11:54:06,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47321 states.
[2022-11-16 11:54:07,434 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47321 to 47250.
[2022-11-16 11:54:07,474 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47250 states, 47249 states have (on average 1.1969353848758704) internal successors, (56554), 47249 states have internal predecessors, (56554), 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)
[2022-11-16 11:54:07,543 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47250 states to 47250 states and 56554 transitions.
[2022-11-16 11:54:07,543 INFO  L78                 Accepts]: Start accepts. Automaton has 47250 states and 56554 transitions. Word has length 756
[2022-11-16 11:54:07,545 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:54:07,545 INFO  L495      AbstractCegarLoop]: Abstraction has 47250 states and 56554 transitions.
[2022-11-16 11:54:07,545 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 189.0) internal successors, (756), 3 states have internal predecessors, (756), 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)
[2022-11-16 11:54:07,546 INFO  L276                IsEmpty]: Start isEmpty. Operand 47250 states and 56554 transitions.
[2022-11-16 11:54:07,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 836
[2022-11-16 11:54:07,555 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:54:07,555 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-16 11:54:07,567 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-16 11:54:07,761 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-16 11:54:07,762 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:54:07,762 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:54:07,762 INFO  L85        PathProgramCache]: Analyzing trace with hash -772983327, now seen corresponding path program 1 times
[2022-11-16 11:54:07,762 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:54:07,763 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680673754]
[2022-11-16 11:54:07,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:54:07,763 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:54:07,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:54:09,146 INFO  L134       CoverageAnalysis]: Checked inductivity of 535 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked.
[2022-11-16 11:54:09,147 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:54:09,147 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680673754]
[2022-11-16 11:54:09,147 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680673754] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:54:09,147 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:54:09,148 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:54:09,148 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485037787]
[2022-11-16 11:54:09,148 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:54:09,149 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 11:54:09,149 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:54:09,150 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 11:54:09,150 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-16 11:54:09,151 INFO  L87              Difference]: Start difference. First operand 47250 states and 56554 transitions. Second operand  has 4 states, 4 states have (on average 138.5) internal successors, (554), 3 states have internal predecessors, (554), 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)
[2022-11-16 11:54:17,674 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:54:17,674 INFO  L93              Difference]: Finished difference Result 91803 states and 110407 transitions.
[2022-11-16 11:54:17,675 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-16 11:54:17,675 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 138.5) internal successors, (554), 3 states have internal predecessors, (554), 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 835
[2022-11-16 11:54:17,677 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:54:17,743 INFO  L225             Difference]: With dead ends: 91803
[2022-11-16 11:54:17,743 INFO  L226             Difference]: Without dead ends: 47254
[2022-11-16 11:54:17,767 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
[2022-11-16 11:54:17,768 INFO  L413           NwaCegarLoop]: 1655 mSDtfsCounter, 984 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 5835 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 5902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 5835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time
[2022-11-16 11:54:17,768 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1855 Invalid, 5902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 5835 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time]
[2022-11-16 11:54:17,813 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47254 states.
[2022-11-16 11:54:18,420 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47254 to 47250.
[2022-11-16 11:54:18,441 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47250 states, 47249 states have (on average 1.1939088657961014) internal successors, (56411), 47249 states have internal predecessors, (56411), 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)
[2022-11-16 11:54:18,495 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47250 states to 47250 states and 56411 transitions.
[2022-11-16 11:54:18,495 INFO  L78                 Accepts]: Start accepts. Automaton has 47250 states and 56411 transitions. Word has length 835
[2022-11-16 11:54:18,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:54:18,496 INFO  L495      AbstractCegarLoop]: Abstraction has 47250 states and 56411 transitions.
[2022-11-16 11:54:18,496 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 138.5) internal successors, (554), 3 states have internal predecessors, (554), 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)
[2022-11-16 11:54:18,497 INFO  L276                IsEmpty]: Start isEmpty. Operand 47250 states and 56411 transitions.
[2022-11-16 11:54:18,505 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 856
[2022-11-16 11:54:18,505 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:54:18,506 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-16 11:54:18,506 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-11-16 11:54:18,506 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:54:18,507 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:54:18,507 INFO  L85        PathProgramCache]: Analyzing trace with hash 1825561345, now seen corresponding path program 1 times
[2022-11-16 11:54:18,507 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:54:18,507 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647762967]
[2022-11-16 11:54:18,508 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:54:18,508 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:54:18,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:54:18,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 575 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked.
[2022-11-16 11:54:18,972 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:54:18,972 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647762967]
[2022-11-16 11:54:18,973 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647762967] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:54:18,973 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:54:18,973 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:54:18,973 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951555911]
[2022-11-16 11:54:18,973 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:54:18,974 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:54:18,975 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:54:18,975 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:54:18,975 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:54:18,976 INFO  L87              Difference]: Start difference. First operand 47250 states and 56411 transitions. Second operand  has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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)
[2022-11-16 11:54:28,377 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:54:28,377 INFO  L93              Difference]: Finished difference Result 119121 states and 144989 transitions.
[2022-11-16 11:54:28,377 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:54:28,378 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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 855
[2022-11-16 11:54:28,379 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:54:28,457 INFO  L225             Difference]: With dead ends: 119121
[2022-11-16 11:54:28,457 INFO  L226             Difference]: Without dead ends: 74603
[2022-11-16 11:54:28,475 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
[2022-11-16 11:54:28,476 INFO  L413           NwaCegarLoop]: 1573 mSDtfsCounter, 1471 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4065 mSolverCounterSat, 1678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 5743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1678 IncrementalHoareTripleChecker+Valid, 4065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time
[2022-11-16 11:54:28,476 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 1770 Invalid, 5743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1678 Valid, 4065 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time]
[2022-11-16 11:54:28,525 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 74603 states.
[2022-11-16 11:54:29,020 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 74603 to 71830.
[2022-11-16 11:54:29,061 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71830 states, 71829 states have (on average 1.1621350707931337) internal successors, (83475), 71829 states have internal predecessors, (83475), 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)
[2022-11-16 11:54:29,379 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71830 states to 71830 states and 83475 transitions.
[2022-11-16 11:54:29,379 INFO  L78                 Accepts]: Start accepts. Automaton has 71830 states and 83475 transitions. Word has length 855
[2022-11-16 11:54:29,380 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:54:29,380 INFO  L495      AbstractCegarLoop]: Abstraction has 71830 states and 83475 transitions.
[2022-11-16 11:54:29,381 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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)
[2022-11-16 11:54:29,381 INFO  L276                IsEmpty]: Start isEmpty. Operand 71830 states and 83475 transitions.
[2022-11-16 11:54:29,392 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 922
[2022-11-16 11:54:29,393 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:54:29,398 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-16 11:54:29,399 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-11-16 11:54:29,399 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:54:29,400 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:54:29,400 INFO  L85        PathProgramCache]: Analyzing trace with hash -81288185, now seen corresponding path program 1 times
[2022-11-16 11:54:29,400 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:54:29,400 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43142904]
[2022-11-16 11:54:29,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:54:29,401 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:54:29,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:54:31,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 707 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked.
[2022-11-16 11:54:31,061 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:54:31,061 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43142904]
[2022-11-16 11:54:31,062 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43142904] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:54:31,062 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:54:31,062 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:54:31,062 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545373538]
[2022-11-16 11:54:31,062 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:54:31,063 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:54:31,063 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:54:31,064 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:54:31,064 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:54:31,064 INFO  L87              Difference]: Start difference. First operand 71830 states and 83475 transitions. Second operand  has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 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)
[2022-11-16 11:54:40,530 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:54:40,530 INFO  L93              Difference]: Finished difference Result 184741 states and 217365 transitions.
[2022-11-16 11:54:40,531 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:54:40,531 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 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 921
[2022-11-16 11:54:40,532 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:54:40,661 INFO  L225             Difference]: With dead ends: 184741
[2022-11-16 11:54:40,661 INFO  L226             Difference]: Without dead ends: 115643
[2022-11-16 11:54:40,687 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:54:40,687 INFO  L413           NwaCegarLoop]: 500 mSDtfsCounter, 1592 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 2390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 6619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2390 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time
[2022-11-16 11:54:40,688 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 558 Invalid, 6619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2390 Valid, 4229 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time]
[2022-11-16 11:54:40,769 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115643 states.
[2022-11-16 11:54:42,083 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115643 to 105964.
[2022-11-16 11:54:42,349 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 105964 states, 105963 states have (on average 1.190160716476506) internal successors, (126113), 105963 states have internal predecessors, (126113), 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)
[2022-11-16 11:54:42,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 105964 states to 105964 states and 126113 transitions.
[2022-11-16 11:54:42,531 INFO  L78                 Accepts]: Start accepts. Automaton has 105964 states and 126113 transitions. Word has length 921
[2022-11-16 11:54:42,531 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:54:42,532 INFO  L495      AbstractCegarLoop]: Abstraction has 105964 states and 126113 transitions.
[2022-11-16 11:54:42,532 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 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)
[2022-11-16 11:54:42,532 INFO  L276                IsEmpty]: Start isEmpty. Operand 105964 states and 126113 transitions.
[2022-11-16 11:54:42,545 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 953
[2022-11-16 11:54:42,546 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:54:42,546 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-16 11:54:42,547 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-11-16 11:54:42,547 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:54:42,547 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:54:42,548 INFO  L85        PathProgramCache]: Analyzing trace with hash 869495759, now seen corresponding path program 1 times
[2022-11-16 11:54:42,548 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:54:42,548 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968747102]
[2022-11-16 11:54:42,548 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:54:42,548 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:54:42,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:54:43,493 INFO  L134       CoverageAnalysis]: Checked inductivity of 922 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked.
[2022-11-16 11:54:43,494 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:54:43,494 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968747102]
[2022-11-16 11:54:43,494 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968747102] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:54:43,494 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:54:43,494 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:54:43,494 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460992257]
[2022-11-16 11:54:43,494 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:54:43,496 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:54:43,496 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:54:43,496 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:54:43,496 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:54:43,497 INFO  L87              Difference]: Start difference. First operand 105964 states and 126113 transitions. Second operand  has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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)
[2022-11-16 11:54:51,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:54:51,845 INFO  L93              Difference]: Finished difference Result 211935 states and 252276 transitions.
[2022-11-16 11:54:51,845 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:54:51,845 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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 952
[2022-11-16 11:54:51,847 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:54:51,968 INFO  L225             Difference]: With dead ends: 211935
[2022-11-16 11:54:51,968 INFO  L226             Difference]: Without dead ends: 108703
[2022-11-16 11:54:52,002 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
[2022-11-16 11:54:52,003 INFO  L413           NwaCegarLoop]: 2902 mSDtfsCounter, 1508 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 1464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 5145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1464 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time
[2022-11-16 11:54:52,003 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 3085 Invalid, 5145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1464 Valid, 3681 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time]
[2022-11-16 11:54:52,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 108703 states.
[2022-11-16 11:54:53,152 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 108703 to 103230.
[2022-11-16 11:54:53,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103230 states, 103229 states have (on average 1.1385754003235524) internal successors, (117534), 103229 states have internal predecessors, (117534), 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)
[2022-11-16 11:54:53,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103230 states to 103230 states and 117534 transitions.
[2022-11-16 11:54:53,576 INFO  L78                 Accepts]: Start accepts. Automaton has 103230 states and 117534 transitions. Word has length 952
[2022-11-16 11:54:53,576 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:54:53,576 INFO  L495      AbstractCegarLoop]: Abstraction has 103230 states and 117534 transitions.
[2022-11-16 11:54:53,590 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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)
[2022-11-16 11:54:53,590 INFO  L276                IsEmpty]: Start isEmpty. Operand 103230 states and 117534 transitions.
[2022-11-16 11:54:53,625 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 971
[2022-11-16 11:54:53,625 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:54:53,626 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-16 11:54:53,642 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-11-16 11:54:53,642 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:54:53,643 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:54:53,643 INFO  L85        PathProgramCache]: Analyzing trace with hash 1383826325, now seen corresponding path program 1 times
[2022-11-16 11:54:53,643 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:54:53,643 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683092447]
[2022-11-16 11:54:53,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:54:53,644 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:54:53,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:54:54,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 949 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked.
[2022-11-16 11:54:54,529 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:54:54,529 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683092447]
[2022-11-16 11:54:54,529 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683092447] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:54:54,530 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:54:54,530 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-16 11:54:54,530 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118407048]
[2022-11-16 11:54:54,530 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:54:54,531 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 11:54:54,531 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:54:54,532 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 11:54:54,532 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-16 11:54:54,532 INFO  L87              Difference]: Start difference. First operand 103230 states and 117534 transitions. Second operand  has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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)
[2022-11-16 11:55:10,617 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:55:10,617 INFO  L93              Difference]: Finished difference Result 325423 states and 375976 transitions.
[2022-11-16 11:55:10,617 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-16 11:55:10,617 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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 970
[2022-11-16 11:55:10,618 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:55:10,906 INFO  L225             Difference]: With dead ends: 325423
[2022-11-16 11:55:10,906 INFO  L226             Difference]: Without dead ends: 223560
[2022-11-16 11:55:10,956 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-16 11:55:10,958 INFO  L413           NwaCegarLoop]: 1335 mSDtfsCounter, 3260 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 8817 mSolverCounterSat, 2507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3260 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 11324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2507 IncrementalHoareTripleChecker+Valid, 8817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time
[2022-11-16 11:55:10,963 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3260 Valid, 1604 Invalid, 11324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2507 Valid, 8817 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time]
[2022-11-16 11:55:11,123 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 223560 states.
[2022-11-16 11:55:13,134 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 223560 to 205684.
[2022-11-16 11:55:13,243 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 205684 states, 205683 states have (on average 1.1389273785388194) internal successors, (234258), 205683 states have internal predecessors, (234258), 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)
[2022-11-16 11:55:13,921 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 205684 states to 205684 states and 234258 transitions.
[2022-11-16 11:55:13,921 INFO  L78                 Accepts]: Start accepts. Automaton has 205684 states and 234258 transitions. Word has length 970
[2022-11-16 11:55:13,922 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:55:13,922 INFO  L495      AbstractCegarLoop]: Abstraction has 205684 states and 234258 transitions.
[2022-11-16 11:55:13,922 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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)
[2022-11-16 11:55:13,922 INFO  L276                IsEmpty]: Start isEmpty. Operand 205684 states and 234258 transitions.
[2022-11-16 11:55:13,932 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 974
[2022-11-16 11:55:13,932 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:55:13,936 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-16 11:55:13,937 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-11-16 11:55:13,937 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:55:13,937 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:55:13,938 INFO  L85        PathProgramCache]: Analyzing trace with hash 542020091, now seen corresponding path program 1 times
[2022-11-16 11:55:13,938 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:55:13,938 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073674066]
[2022-11-16 11:55:13,938 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:55:13,939 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:55:14,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:55:17,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 542 backedges. 120 proven. 422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:55:17,299 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:55:17,300 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073674066]
[2022-11-16 11:55:17,300 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073674066] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-16 11:55:17,300 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366241847]
[2022-11-16 11:55:17,300 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:55:17,300 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-16 11:55:17,301 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3
[2022-11-16 11:55:17,306 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-16 11:55:17,327 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-16 11:55:17,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:55:17,709 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-11-16 11:55:17,733 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-16 11:55:32,197 INFO  L134       CoverageAnalysis]: Checked inductivity of 542 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:55:32,197 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-16 11:55:32,197 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366241847] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:55:32,198 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-16 11:55:32,198 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-11-16 11:55:32,198 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618342243]
[2022-11-16 11:55:32,198 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:55:32,199 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:55:32,200 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:55:32,200 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:55:32,200 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2022-11-16 11:55:32,201 INFO  L87              Difference]: Start difference. First operand 205684 states and 234258 transitions. Second operand  has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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)
[2022-11-16 11:55:33,524 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:55:33,524 INFO  L93              Difference]: Finished difference Result 404599 states and 462237 transitions.
[2022-11-16 11:55:33,524 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:55:33,524 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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 973
[2022-11-16 11:55:33,525 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:55:33,782 INFO  L225             Difference]: With dead ends: 404599
[2022-11-16 11:55:33,782 INFO  L226             Difference]: Without dead ends: 216669
[2022-11-16 11:55:33,861 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2022-11-16 11:55:33,861 INFO  L413           NwaCegarLoop]: 3109 mSDtfsCounter, 985 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 4909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4909 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-16 11:55:33,862 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 3281 Invalid, 4909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4909 Unchecked, 0.0s Time]
[2022-11-16 11:55:34,523 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 216669 states.
[2022-11-16 11:55:36,772 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 216669 to 212509.
[2022-11-16 11:55:36,918 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 212509 states, 212508 states have (on average 1.1373595346998702) internal successors, (241698), 212508 states have internal predecessors, (241698), 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)
[2022-11-16 11:55:37,216 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 212509 states to 212509 states and 241698 transitions.
[2022-11-16 11:55:37,216 INFO  L78                 Accepts]: Start accepts. Automaton has 212509 states and 241698 transitions. Word has length 973
[2022-11-16 11:55:37,217 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:55:37,217 INFO  L495      AbstractCegarLoop]: Abstraction has 212509 states and 241698 transitions.
[2022-11-16 11:55:37,217 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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)
[2022-11-16 11:55:37,217 INFO  L276                IsEmpty]: Start isEmpty. Operand 212509 states and 241698 transitions.
[2022-11-16 11:55:37,226 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1013
[2022-11-16 11:55:37,226 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:55:37,227 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:55:37,242 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-16 11:55:37,432 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-16 11:55:37,433 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:55:37,433 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:55:37,433 INFO  L85        PathProgramCache]: Analyzing trace with hash -1304940496, now seen corresponding path program 1 times
[2022-11-16 11:55:37,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:55:37,434 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777856356]
[2022-11-16 11:55:37,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:55:37,434 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:55:37,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:55:39,712 INFO  L134       CoverageAnalysis]: Checked inductivity of 1223 backedges. 544 proven. 455 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked.
[2022-11-16 11:55:39,712 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:55:39,713 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777856356]
[2022-11-16 11:55:39,713 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777856356] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-16 11:55:39,713 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302993912]
[2022-11-16 11:55:39,714 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:55:39,715 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-16 11:55:39,715 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3
[2022-11-16 11:55:39,717 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-16 11:55:39,746 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-16 11:55:40,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:55:40,174 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-16 11:55:40,185 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-16 11:55:40,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 1223 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked.
[2022-11-16 11:55:40,328 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-16 11:55:40,329 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [302993912] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:55:40,329 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-16 11:55:40,329 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2022-11-16 11:55:40,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039943511]
[2022-11-16 11:55:40,330 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:55:40,331 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:55:40,331 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:55:40,331 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:55:40,331 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-11-16 11:55:40,332 INFO  L87              Difference]: Start difference. First operand 212509 states and 241698 transitions. Second operand  has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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)
[2022-11-16 11:55:49,496 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:55:49,496 INFO  L93              Difference]: Finished difference Result 472789 states and 542164 transitions.
[2022-11-16 11:55:49,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:55:49,496 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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 1012
[2022-11-16 11:55:49,497 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:55:49,858 INFO  L225             Difference]: With dead ends: 472789
[2022-11-16 11:55:49,859 INFO  L226             Difference]: Without dead ends: 279399
[2022-11-16 11:55:49,957 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1012 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-11-16 11:55:49,958 INFO  L413           NwaCegarLoop]: 2694 mSDtfsCounter, 1586 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 3726 mSolverCounterSat, 1585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 5311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1585 IncrementalHoareTripleChecker+Valid, 3726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2022-11-16 11:55:49,958 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 2834 Invalid, 5311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1585 Valid, 3726 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2022-11-16 11:55:50,187 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 279399 states.
[2022-11-16 11:55:53,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 279399 to 254811.
[2022-11-16 11:55:53,302 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 254811 states, 254810 states have (on average 1.122306816843923) internal successors, (285975), 254810 states have internal predecessors, (285975), 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)
[2022-11-16 11:55:54,435 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 254811 states to 254811 states and 285975 transitions.
[2022-11-16 11:55:54,435 INFO  L78                 Accepts]: Start accepts. Automaton has 254811 states and 285975 transitions. Word has length 1012
[2022-11-16 11:55:54,436 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:55:54,436 INFO  L495      AbstractCegarLoop]: Abstraction has 254811 states and 285975 transitions.
[2022-11-16 11:55:54,436 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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)
[2022-11-16 11:55:54,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 254811 states and 285975 transitions.
[2022-11-16 11:55:54,448 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1033
[2022-11-16 11:55:54,449 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:55:54,449 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:55:54,459 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-11-16 11:55:54,655 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d958eff-c433-4c77-a5c6-d161b128e111/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2022-11-16 11:55:54,655 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:55:54,655 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:55:54,656 INFO  L85        PathProgramCache]: Analyzing trace with hash 321164478, now seen corresponding path program 1 times
[2022-11-16 11:55:54,656 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:55:54,656 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593962575]
[2022-11-16 11:55:54,656 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:55:54,656 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:55:54,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:55:55,804 INFO  L134       CoverageAnalysis]: Checked inductivity of 1267 backedges. 677 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked.
[2022-11-16 11:55:55,804 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:55:55,804 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593962575]
[2022-11-16 11:55:55,804 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593962575] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:55:55,804 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:55:55,805 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-16 11:55:55,805 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282886933]
[2022-11-16 11:55:55,805 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:55:55,806 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 11:55:55,806 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:55:55,807 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 11:55:55,807 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-16 11:55:55,807 INFO  L87              Difference]: Start difference. First operand 254811 states and 285975 transitions. Second operand  has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 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)