./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version e04fb08f
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/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_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/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 64bit --witnessprinter.graph.data.programhash 0d3b34ccf7b61a3548c1b0e1186b72a73f9dd7d7dfd1dab67650ea7883b9130b
--- 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 12:08:25,059 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-16 12:08:25,061 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-16 12:08:25,080 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-16 12:08:25,081 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-16 12:08:25,082 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-16 12:08:25,083 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-16 12:08:25,085 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-16 12:08:25,086 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-16 12:08:25,087 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-16 12:08:25,089 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-16 12:08:25,090 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-16 12:08:25,090 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-16 12:08:25,091 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-16 12:08:25,093 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-16 12:08:25,094 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-16 12:08:25,095 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-16 12:08:25,097 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-16 12:08:25,098 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-16 12:08:25,101 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-16 12:08:25,102 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-16 12:08:25,104 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-16 12:08:25,105 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-16 12:08:25,106 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-16 12:08:25,110 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-16 12:08:25,111 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-16 12:08:25,111 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-16 12:08:25,112 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-16 12:08:25,113 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-16 12:08:25,114 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-16 12:08:25,114 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-16 12:08:25,115 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-16 12:08:25,116 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-16 12:08:25,117 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-16 12:08:25,118 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-16 12:08:25,119 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-16 12:08:25,120 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-16 12:08:25,120 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-16 12:08:25,121 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-16 12:08:25,122 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-16 12:08:25,123 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-16 12:08:25,124 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf
[2022-11-16 12:08:25,145 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-16 12:08:25,146 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-16 12:08:25,146 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-16 12:08:25,147 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-16 12:08:25,147 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-16 12:08:25,148 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-16 12:08:25,148 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-16 12:08:25,149 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-16 12:08:25,149 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-16 12:08:25,149 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-16 12:08:25,150 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-16 12:08:25,150 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-16 12:08:25,150 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-16 12:08:25,150 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-16 12:08:25,151 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-16 12:08:25,151 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-16 12:08:25,151 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-16 12:08:25,151 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-16 12:08:25,152 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-16 12:08:25,152 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-16 12:08:25,152 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-16 12:08:25,152 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-16 12:08:25,153 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-16 12:08:25,153 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-16 12:08:25,153 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-16 12:08:25,153 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-16 12:08:25,153 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-16 12:08:25,154 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-16 12:08:25,154 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-16 12:08:25,154 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-16 12:08:25,154 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_ed5f5fbe-2a22-4886-b184-e38e0df7de40/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_ed5f5fbe-2a22-4886-b184-e38e0df7de40/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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d3b34ccf7b61a3548c1b0e1186b72a73f9dd7d7dfd1dab67650ea7883b9130b
[2022-11-16 12:08:25,466 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-16 12:08:25,513 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-16 12:08:25,517 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-16 12:08:25,520 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-16 12:08:25,521 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-16 12:08:25,522 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c
[2022-11-16 12:08:25,608 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/data/4f5b2cd37/93f97085ce144618bd32feba104f087e/FLAG00fc7826c
[2022-11-16 12:08:26,487 INFO  L306              CDTParser]: Found 1 translation units.
[2022-11-16 12:08:26,489 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c
[2022-11-16 12:08:26,532 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/data/4f5b2cd37/93f97085ce144618bd32feba104f087e/FLAG00fc7826c
[2022-11-16 12:08:26,987 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/data/4f5b2cd37/93f97085ce144618bd32feba104f087e
[2022-11-16 12:08:26,989 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-16 12:08:26,991 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-16 12:08:26,993 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-16 12:08:26,993 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-16 12:08:26,998 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-16 12:08:27,000 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:08:26" (1/1) ...
[2022-11-16 12:08:27,002 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7ef907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:27, skipping insertion in model container
[2022-11-16 12:08:27,002 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:08:26" (1/1) ...
[2022-11-16 12:08:27,011 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-16 12:08:27,184 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-16 12:08:27,518 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_ed5f5fbe-2a22-4886-b184-e38e0df7de40/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c[1014,1027]
[2022-11-16 12:08:28,396 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-16 12:08:28,400 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-16 12:08:28,412 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_ed5f5fbe-2a22-4886-b184-e38e0df7de40/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c[1014,1027]
[2022-11-16 12:08:28,880 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-16 12:08:28,892 INFO  L208         MainTranslator]: Completed translation
[2022-11-16 12:08:28,893 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28 WrapperNode
[2022-11-16 12:08:28,911 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-16 12:08:28,912 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-16 12:08:28,912 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-16 12:08:28,912 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-16 12:08:28,920 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:29,076 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:29,593 INFO  L138                Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 11918
[2022-11-16 12:08:29,594 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-16 12:08:29,595 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-16 12:08:29,595 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-16 12:08:29,595 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-16 12:08:29,604 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:29,604 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:29,829 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:29,830 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:29,976 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:30,076 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:30,128 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:30,184 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:30,326 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-16 12:08:30,327 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-16 12:08:30,330 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-16 12:08:30,330 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-16 12:08:30,343 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (1/1) ...
[2022-11-16 12:08:30,351 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-16 12:08:30,361 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/z3
[2022-11-16 12:08:30,374 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-16 12:08:30,419 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-16 12:08:30,463 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-16 12:08:30,463 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-16 12:08:31,784 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-16 12:08:31,786 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-16 12:08:46,459 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-16 12:08:46,489 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-16 12:08:46,489 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-16 12:08:46,494 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:08:46 BoogieIcfgContainer
[2022-11-16 12:08:46,494 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-16 12:08:46,498 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-16 12:08:46,499 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-16 12:08:46,503 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-16 12:08:46,503 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:08:26" (1/3) ...
[2022-11-16 12:08:46,504 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419e8ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:08:46, skipping insertion in model container
[2022-11-16 12:08:46,504 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:28" (2/3) ...
[2022-11-16 12:08:46,505 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419e8ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:08:46, skipping insertion in model container
[2022-11-16 12:08:46,505 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:08:46" (3/3) ...
[2022-11-16 12:08:46,507 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lup.3.prop1-back-serstep.c
[2022-11-16 12:08:46,532 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-16 12:08:46,532 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-16 12:08:46,633 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-16 12:08:46,641 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;@27bde379, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-16 12:08:46,641 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-16 12:08:46,651 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 1967 states, 1965 states have (on average 1.665648854961832) internal successors, (3273), 1966 states have internal predecessors, (3273), 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 12:08:46,674 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 426
[2022-11-16 12:08:46,675 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 12:08:46,676 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 12:08:46,677 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 12:08:46,682 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 12:08:46,682 INFO  L85        PathProgramCache]: Analyzing trace with hash -1674368661, now seen corresponding path program 1 times
[2022-11-16 12:08:46,692 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 12:08:46,693 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891798094]
[2022-11-16 12:08:46,693 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:08:46,694 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 12:08:47,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 12:08:48,920 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 12:08:48,921 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 12:08:48,921 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891798094]
[2022-11-16 12:08:48,922 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891798094] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 12:08:48,922 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 12:08:48,922 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-16 12:08:48,925 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450056795]
[2022-11-16 12:08:48,926 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 12:08:48,934 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 12:08:48,934 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 12:08:48,970 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 12:08:48,972 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-16 12:08:48,979 INFO  L87              Difference]: Start difference. First operand  has 1967 states, 1965 states have (on average 1.665648854961832) internal successors, (3273), 1966 states have internal predecessors, (3273), 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 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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 12:08:49,342 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 12:08:49,342 INFO  L93              Difference]: Finished difference Result 6517 states and 10857 transitions.
[2022-11-16 12:08:49,344 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-16 12:08:49,346 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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 425
[2022-11-16 12:08:49,353 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 12:08:49,394 INFO  L225             Difference]: With dead ends: 6517
[2022-11-16 12:08:49,394 INFO  L226             Difference]: Without dead ends: 4552
[2022-11-16 12:08:49,407 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 12:08:49,412 INFO  L413           NwaCegarLoop]: 4315 mSDtfsCounter, 9777 mSDsluCounter, 5358 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9777 SdHoareTripleChecker+Valid, 9673 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-16 12:08:49,414 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9777 Valid, 9673 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-16 12:08:49,446 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4552 states.
[2022-11-16 12:08:49,568 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 1965.
[2022-11-16 12:08:49,573 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1965 states, 1964 states have (on average 1.6644602851323829) internal successors, (3269), 1964 states have internal predecessors, (3269), 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 12:08:49,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3269 transitions.
[2022-11-16 12:08:49,580 INFO  L78                 Accepts]: Start accepts. Automaton has 1965 states and 3269 transitions. Word has length 425
[2022-11-16 12:08:49,583 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 12:08:49,583 INFO  L495      AbstractCegarLoop]: Abstraction has 1965 states and 3269 transitions.
[2022-11-16 12:08:49,584 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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 12:08:49,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 1965 states and 3269 transitions.
[2022-11-16 12:08:49,597 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 427
[2022-11-16 12:08:49,598 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 12:08:49,598 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 12:08:49,599 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-16 12:08:49,599 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 12:08:49,600 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 12:08:49,600 INFO  L85        PathProgramCache]: Analyzing trace with hash -364033889, now seen corresponding path program 1 times
[2022-11-16 12:08:49,601 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 12:08:49,601 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387745360]
[2022-11-16 12:08:49,601 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:08:49,602 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 12:08:49,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 12:08:50,941 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 12:08:50,942 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 12:08:50,942 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387745360]
[2022-11-16 12:08:50,943 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387745360] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 12:08:50,943 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 12:08:50,943 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-16 12:08:50,944 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246790481]
[2022-11-16 12:08:50,944 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 12:08:50,946 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 12:08:50,947 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 12:08:50,947 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 12:08:50,947 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-16 12:08:50,948 INFO  L87              Difference]: Start difference. First operand 1965 states and 3269 transitions. Second operand  has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 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 12:08:52,158 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-11-16 12:08:52,339 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 12:08:52,339 INFO  L93              Difference]: Finished difference Result 7841 states and 13054 transitions.
[2022-11-16 12:08:52,340 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-16 12:08:52,341 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 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 426
[2022-11-16 12:08:52,342 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 12:08:52,359 INFO  L225             Difference]: With dead ends: 7841
[2022-11-16 12:08:52,359 INFO  L226             Difference]: Without dead ends: 5878
[2022-11-16 12:08:52,370 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:08:52,371 INFO  L413           NwaCegarLoop]: 4309 mSDtfsCounter, 8312 mSDsluCounter, 6523 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8312 SdHoareTripleChecker+Valid, 10832 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-11-16 12:08:52,372 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8312 Valid, 10832 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2022-11-16 12:08:52,382 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5878 states.
[2022-11-16 12:08:52,455 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 2594.
[2022-11-16 12:08:52,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2594 states, 2593 states have (on average 1.6644812957963748) internal successors, (4316), 2593 states have internal predecessors, (4316), 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 12:08:52,468 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4316 transitions.
[2022-11-16 12:08:52,468 INFO  L78                 Accepts]: Start accepts. Automaton has 2594 states and 4316 transitions. Word has length 426
[2022-11-16 12:08:52,469 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 12:08:52,469 INFO  L495      AbstractCegarLoop]: Abstraction has 2594 states and 4316 transitions.
[2022-11-16 12:08:52,470 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 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 12:08:52,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 2594 states and 4316 transitions.
[2022-11-16 12:08:52,567 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1734
[2022-11-16 12:08:52,568 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 12:08:52,569 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 12:08:52,570 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-16 12:08:52,570 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 12:08:52,571 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 12:08:52,572 INFO  L85        PathProgramCache]: Analyzing trace with hash 1785886193, now seen corresponding path program 1 times
[2022-11-16 12:08:52,572 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 12:08:52,572 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286426265]
[2022-11-16 12:08:52,573 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:08:52,573 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 12:16:36,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 12:16:52,354 INFO  L134       CoverageAnalysis]: Checked inductivity of 422 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked.
[2022-11-16 12:16:52,356 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 12:16:52,356 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286426265]
[2022-11-16 12:16:52,357 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286426265] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 12:16:52,365 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 12:16:52,366 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-16 12:16:52,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864225983]
[2022-11-16 12:16:52,367 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 12:16:52,369 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-16 12:16:52,369 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 12:16:52,370 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-16 12:16:52,375 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-16 12:16:52,377 INFO  L87              Difference]: Start difference. First operand 2594 states and 4316 transitions. Second operand  has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 12:16:52,640 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 12:16:52,640 INFO  L93              Difference]: Finished difference Result 8471 states and 14100 transitions.
[2022-11-16 12:16:52,641 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-16 12:16:52,642 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 1733
[2022-11-16 12:16:52,646 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 12:16:52,667 INFO  L225             Difference]: With dead ends: 8471
[2022-11-16 12:16:52,668 INFO  L226             Difference]: Without dead ends: 6508
[2022-11-16 12:16:52,672 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 12:16:52,676 INFO  L413           NwaCegarLoop]: 4309 mSDtfsCounter, 9767 mSDsluCounter, 7559 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9767 SdHoareTripleChecker+Valid, 11868 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-16 12:16:52,678 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9767 Valid, 11868 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-16 12:16:52,688 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6508 states.
[2022-11-16 12:16:52,764 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 2594.
[2022-11-16 12:16:52,770 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2594 states, 2593 states have (on average 1.6644812957963748) internal successors, (4316), 2593 states have internal predecessors, (4316), 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 12:16:52,778 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4316 transitions.
[2022-11-16 12:16:52,778 INFO  L78                 Accepts]: Start accepts. Automaton has 2594 states and 4316 transitions. Word has length 1733
[2022-11-16 12:16:52,783 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 12:16:52,784 INFO  L495      AbstractCegarLoop]: Abstraction has 2594 states and 4316 transitions.
[2022-11-16 12:16:52,785 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 12:16:52,785 INFO  L276                IsEmpty]: Start isEmpty. Operand 2594 states and 4316 transitions.
[2022-11-16 12:16:52,810 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1735
[2022-11-16 12:16:52,811 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 12:16:52,812 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 12:16:52,812 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-16 12:16:52,813 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 12:16:52,814 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 12:16:52,815 INFO  L85        PathProgramCache]: Analyzing trace with hash -684320271, now seen corresponding path program 1 times
[2022-11-16 12:16:52,815 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 12:16:52,815 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22732079]
[2022-11-16 12:16:52,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:16:52,816 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 12:17:21,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 12:17:38,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 422 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked.
[2022-11-16 12:17:38,299 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 12:17:38,300 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22732079]
[2022-11-16 12:17:38,300 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22732079] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 12:17:38,300 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 12:17:38,301 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-16 12:17:38,301 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968256762]
[2022-11-16 12:17:38,302 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 12:17:38,304 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-16 12:17:38,304 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 12:17:38,305 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-16 12:17:38,305 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-16 12:17:38,306 INFO  L87              Difference]: Start difference. First operand 2594 states and 4316 transitions. Second operand  has 5 states, 5 states have (on average 263.8) internal successors, (1319), 5 states have internal predecessors, (1319), 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 12:17:38,663 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 12:17:38,664 INFO  L93              Difference]: Finished difference Result 8485 states and 14120 transitions.
[2022-11-16 12:17:38,664 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-11-16 12:17:38,665 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 263.8) internal successors, (1319), 5 states have internal predecessors, (1319), 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 1734
[2022-11-16 12:17:38,668 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 12:17:38,707 INFO  L225             Difference]: With dead ends: 8485
[2022-11-16 12:17:38,710 INFO  L226             Difference]: Without dead ends: 6520
[2022-11-16 12:17:38,714 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2022-11-16 12:17:38,722 INFO  L413           NwaCegarLoop]: 4307 mSDtfsCounter, 13030 mSDsluCounter, 11865 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13030 SdHoareTripleChecker+Valid, 16172 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-16 12:17:38,722 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13030 Valid, 16172 Invalid, 34 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-16 12:17:38,731 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6520 states.
[2022-11-16 12:17:38,803 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 2594.
[2022-11-16 12:17:38,809 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2594 states, 2593 states have (on average 1.6644812957963748) internal successors, (4316), 2593 states have internal predecessors, (4316), 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 12:17:38,817 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4316 transitions.
[2022-11-16 12:17:38,818 INFO  L78                 Accepts]: Start accepts. Automaton has 2594 states and 4316 transitions. Word has length 1734
[2022-11-16 12:17:38,821 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 12:17:38,821 INFO  L495      AbstractCegarLoop]: Abstraction has 2594 states and 4316 transitions.
[2022-11-16 12:17:38,822 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 263.8) internal successors, (1319), 5 states have internal predecessors, (1319), 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 12:17:38,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 2594 states and 4316 transitions.
[2022-11-16 12:17:38,847 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1736
[2022-11-16 12:17:38,847 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 12:17:38,849 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 12:17:38,849 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-16 12:17:38,849 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 12:17:38,850 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 12:17:38,850 INFO  L85        PathProgramCache]: Analyzing trace with hash 1859029911, now seen corresponding path program 1 times
[2022-11-16 12:17:38,851 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 12:17:38,851 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077778300]
[2022-11-16 12:17:38,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:17:38,852 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 12:18:01,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 12:18:22,218 INFO  L134       CoverageAnalysis]: Checked inductivity of 422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked.
[2022-11-16 12:18:22,218 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 12:18:22,218 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077778300]
[2022-11-16 12:18:22,219 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077778300] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 12:18:22,219 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 12:18:22,219 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-11-16 12:18:22,219 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75068828]
[2022-11-16 12:18:22,220 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 12:18:22,221 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-11-16 12:18:22,222 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 12:18:22,222 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-11-16 12:18:22,222 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-11-16 12:18:22,223 INFO  L87              Difference]: Start difference. First operand 2594 states and 4316 transitions. Second operand  has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 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 12:18:22,670 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 12:18:22,670 INFO  L93              Difference]: Finished difference Result 8508 states and 14157 transitions.
[2022-11-16 12:18:22,671 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-11-16 12:18:22,672 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 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 1735
[2022-11-16 12:18:22,675 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 12:18:22,687 INFO  L225             Difference]: With dead ends: 8508
[2022-11-16 12:18:22,687 INFO  L226             Difference]: Without dead ends: 6540
[2022-11-16 12:18:22,692 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2022-11-16 12:18:22,694 INFO  L413           NwaCegarLoop]: 4305 mSDtfsCounter, 16302 mSDsluCounter, 16169 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16302 SdHoareTripleChecker+Valid, 20474 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-16 12:18:22,694 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16302 Valid, 20474 Invalid, 45 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-16 12:18:22,703 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6540 states.
[2022-11-16 12:18:22,768 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 2594.
[2022-11-16 12:18:22,773 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2594 states, 2593 states have (on average 1.6644812957963748) internal successors, (4316), 2593 states have internal predecessors, (4316), 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 12:18:22,779 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4316 transitions.
[2022-11-16 12:18:22,780 INFO  L78                 Accepts]: Start accepts. Automaton has 2594 states and 4316 transitions. Word has length 1735
[2022-11-16 12:18:22,782 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 12:18:22,782 INFO  L495      AbstractCegarLoop]: Abstraction has 2594 states and 4316 transitions.
[2022-11-16 12:18:22,783 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 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 12:18:22,784 INFO  L276                IsEmpty]: Start isEmpty. Operand 2594 states and 4316 transitions.
[2022-11-16 12:18:22,808 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1737
[2022-11-16 12:18:22,809 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 12:18:22,811 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 12:18:22,812 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-16 12:18:22,813 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 12:18:22,813 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 12:18:22,814 INFO  L85        PathProgramCache]: Analyzing trace with hash -989589685, now seen corresponding path program 1 times
[2022-11-16 12:18:22,814 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 12:18:22,814 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858572063]
[2022-11-16 12:18:22,815 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:18:22,815 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 12:21:54,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 12:22:13,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 422 backedges. 2 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 12:22:13,469 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 12:22:13,470 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858572063]
[2022-11-16 12:22:13,470 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858572063] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-16 12:22:13,470 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774517998]
[2022-11-16 12:22:13,471 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:22:13,471 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-16 12:22:13,471 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/z3
[2022-11-16 12:22:13,479 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-16 12:22:13,486 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-16 12:22:19,156 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 12:22:19,269 INFO  L263         TraceCheckSpWp]: Trace formula consists of 15125 conjuncts, 39 conjunts are in the unsatisfiable core
[2022-11-16 12:22:19,369 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-16 12:22:31,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 422 backedges. 2 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 12:22:31,147 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-11-16 12:22:32,230 INFO  L134       CoverageAnalysis]: Checked inductivity of 422 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked.
[2022-11-16 12:22:32,231 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [774517998] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-16 12:22:32,231 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2022-11-16 12:22:32,232 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 10] total 17
[2022-11-16 12:22:32,232 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414750583]
[2022-11-16 12:22:32,232 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 12:22:32,234 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-16 12:22:32,234 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 12:22:32,235 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-16 12:22:32,236 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272
[2022-11-16 12:22:32,237 INFO  L87              Difference]: Start difference. First operand 2594 states and 4316 transitions. Second operand  has 7 states, 7 states have (on average 189.28571428571428) internal successors, (1325), 7 states have internal predecessors, (1325), 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 12:22:32,829 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 12:22:32,829 INFO  L93              Difference]: Finished difference Result 8535 states and 14202 transitions.
[2022-11-16 12:22:32,830 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2022-11-16 12:22:32,831 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 189.28571428571428) internal successors, (1325), 7 states have internal predecessors, (1325), 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 1736
[2022-11-16 12:22:32,834 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 12:22:32,845 INFO  L225             Difference]: With dead ends: 8535
[2022-11-16 12:22:32,845 INFO  L226             Difference]: Without dead ends: 6564
[2022-11-16 12:22:32,849 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3495 GetRequests, 3470 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702
[2022-11-16 12:22:32,850 INFO  L413           NwaCegarLoop]: 4303 mSDtfsCounter, 19579 mSDsluCounter, 20471 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19579 SdHoareTripleChecker+Valid, 24774 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-16 12:22:32,850 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19579 Valid, 24774 Invalid, 58 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-16 12:22:32,858 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6564 states.
[2022-11-16 12:22:32,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6564 to 2594.
[2022-11-16 12:22:32,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2594 states, 2593 states have (on average 1.6644812957963748) internal successors, (4316), 2593 states have internal predecessors, (4316), 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 12:22:32,921 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4316 transitions.
[2022-11-16 12:22:32,921 INFO  L78                 Accepts]: Start accepts. Automaton has 2594 states and 4316 transitions. Word has length 1736
[2022-11-16 12:22:32,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 12:22:32,923 INFO  L495      AbstractCegarLoop]: Abstraction has 2594 states and 4316 transitions.
[2022-11-16 12:22:32,925 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 189.28571428571428) internal successors, (1325), 7 states have internal predecessors, (1325), 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 12:22:32,925 INFO  L276                IsEmpty]: Start isEmpty. Operand 2594 states and 4316 transitions.
[2022-11-16 12:22:32,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1738
[2022-11-16 12:22:32,947 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 12:22:32,948 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 12:22:33,017 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-11-16 12:22:33,149 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5f5fbe-2a22-4886-b184-e38e0df7de40/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-16 12:22:33,150 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 12:22:33,150 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 12:22:33,151 INFO  L85        PathProgramCache]: Analyzing trace with hash -384762117, now seen corresponding path program 1 times
[2022-11-16 12:22:33,151 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 12:22:33,151 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886446396]
[2022-11-16 12:22:33,151 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:22:33,152 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms