./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label59.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
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_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f2d2e41c47909f310aca89c72ace97c8714a25c0bdd2c7a3c7fdf51efd78935
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 03:31:56,553 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 03:31:56,636 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-29 03:31:56,642 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 03:31:56,643 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 03:31:56,671 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 03:31:56,672 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 03:31:56,672 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 03:31:56,673 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 03:31:56,674 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 03:31:56,675 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 03:31:56,675 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 03:31:56,676 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 03:31:56,677 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 03:31:56,677 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 03:31:56,678 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 03:31:56,679 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 03:31:56,679 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-29 03:31:56,680 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 03:31:56,681 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-29 03:31:56,681 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 03:31:56,682 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 03:31:56,683 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 03:31:56,683 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 03:31:56,684 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-29 03:31:56,684 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 03:31:56,685 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 03:31:56,685 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 03:31:56,686 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 03:31:56,686 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 03:31:56,687 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 03:31:56,687 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 03:31:56,688 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 03:31:56,688 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 03:31:56,688 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 03:31:56,689 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 03:31:56,689 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 03:31:56,689 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 03:31:56,689 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 03:31:56,690 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 03:31:56,690 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 03:31:56,690 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 03:31:56,691 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/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_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f2d2e41c47909f310aca89c72ace97c8714a25c0bdd2c7a3c7fdf51efd78935
[2023-11-29 03:31:56,957 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 03:31:56,987 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 03:31:56,992 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 03:31:56,993 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 03:31:56,994 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 03:31:56,995 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem07_label59.c
[2023-11-29 03:32:00,033 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 03:32:01,681 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 03:32:01,682 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/sv-benchmarks/c/eca-rers2012/Problem07_label59.c
[2023-11-29 03:32:01,850 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/data/abdcfde31/f6c5420f47b24011a8403f6a8404a10c/FLAGb0c16e536
[2023-11-29 03:32:01,863 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/data/abdcfde31/f6c5420f47b24011a8403f6a8404a10c
[2023-11-29 03:32:01,865 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 03:32:01,867 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 03:32:01,868 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 03:32:01,868 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 03:32:01,873 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 03:32:01,874 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:32:01" (1/1) ...
[2023-11-29 03:32:01,875 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37596f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:01, skipping insertion in model container
[2023-11-29 03:32:01,875 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:32:01" (1/1) ...
[2023-11-29 03:32:02,757 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 03:32:14,756 WARN  L240   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_6da6a3b7-aa04-4cd7-9041-c839aa125794/sv-benchmarks/c/eca-rers2012/Problem07_label59.c[2776148,2776161]
[2023-11-29 03:32:14,812 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 03:32:14,819 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 03:32:22,152 WARN  L240   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_6da6a3b7-aa04-4cd7-9041-c839aa125794/sv-benchmarks/c/eca-rers2012/Problem07_label59.c[2776148,2776161]
[2023-11-29 03:32:22,155 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 03:32:22,945 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 03:32:22,945 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22 WrapperNode
[2023-11-29 03:32:22,946 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 03:32:22,947 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 03:32:22,947 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 03:32:22,947 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 03:32:22,954 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:23,461 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:25,892 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83774
[2023-11-29 03:32:25,893 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 03:32:25,894 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 03:32:25,894 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 03:32:25,894 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 03:32:25,905 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:25,906 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:26,300 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:26,613 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 03:32:26,614 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:26,614 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:27,346 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:27,664 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:27,739 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:27,814 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:28,109 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 03:32:28,110 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 03:32:28,110 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 03:32:28,110 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 03:32:28,111 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (1/1) ...
[2023-11-29 03:32:28,116 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 03:32:28,125 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 03:32:28,136 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 03:32:28,138 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da6a3b7-aa04-4cd7-9041-c839aa125794/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 03:32:28,161 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 03:32:28,161 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 03:32:28,161 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 03:32:28,161 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 03:32:28,280 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 03:32:28,282 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 03:33:13,666 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 03:33:13,885 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 03:33:13,885 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 03:33:13,891 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:33:13 BoogieIcfgContainer
[2023-11-29 03:33:13,891 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 03:33:13,894 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 03:33:13,894 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 03:33:13,897 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 03:33:13,897 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:32:01" (1/3) ...
[2023-11-29 03:33:13,898 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6453e86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:33:13, skipping insertion in model container
[2023-11-29 03:33:13,898 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:22" (2/3) ...
[2023-11-29 03:33:13,899 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6453e86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:33:13, skipping insertion in model container
[2023-11-29 03:33:13,899 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:33:13" (3/3) ...
[2023-11-29 03:33:13,900 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label59.c
[2023-11-29 03:33:13,917 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 03:33:13,917 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 03:33:14,112 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 03:33:14,119 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=LoopHeads, 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;@37db2767, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 03:33:14,119 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 03:33:14,160 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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)
[2023-11-29 03:33:14,969 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10141
[2023-11-29 03:33:14,970 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:33:14,977 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, 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[2023-11-29 03:33:14,981 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:33:14,993 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:33:15,000 INFO  L85        PathProgramCache]: Analyzing trace with hash 1863772660, now seen corresponding path program 1 times
[2023-11-29 03:33:15,008 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:33:15,008 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278198208]
[2023-11-29 03:33:15,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:33:15,013 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:33:18,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:33:45,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:33:45,565 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:33:45,565 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278198208]
[2023-11-29 03:33:45,566 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278198208] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:33:45,566 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:33:45,569 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 03:33:45,571 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667810067]
[2023-11-29 03:33:45,572 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:33:45,594 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-29 03:33:45,595 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:33:45,641 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-29 03:33:45,642 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-29 03:33:45,687 INFO  L87              Difference]: Start difference. First operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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 2 states, 2 states have (on average 5070.0) internal successors, (10140), 2 states have internal predecessors, (10140), 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)
[2023-11-29 03:33:46,127 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:33:46,127 INFO  L93              Difference]: Finished difference Result 20389 states and 40675 transitions.
[2023-11-29 03:33:46,128 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-29 03:33:46,135 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5070.0) internal successors, (10140), 2 states have internal predecessors, (10140), 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 10140
[2023-11-29 03:33:46,162 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:33:46,252 INFO  L225             Difference]: With dead ends: 20389
[2023-11-29 03:33:46,252 INFO  L226             Difference]: Without dead ends: 10193
[2023-11-29 03:33:46,281 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-29 03:33:46,286 INFO  L413           NwaCegarLoop]: 20273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20273 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 03:33:46,287 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20273 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 03:33:46,332 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10193 states.
[2023-11-29 03:33:46,655 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193.
[2023-11-29 03:33:46,684 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10193 states, 10192 states have (on average 1.9891091051805339) internal successors, (20273), 10192 states have internal predecessors, (20273), 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)
[2023-11-29 03:33:46,735 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions.
[2023-11-29 03:33:46,737 INFO  L78                 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10140
[2023-11-29 03:33:46,757 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:33:46,757 INFO  L495      AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions.
[2023-11-29 03:33:46,761 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5070.0) internal successors, (10140), 2 states have internal predecessors, (10140), 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)
[2023-11-29 03:33:46,761 INFO  L276                IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions.
[2023-11-29 03:33:47,466 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10141
[2023-11-29 03:33:47,466 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:33:47,472 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, 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[2023-11-29 03:33:47,473 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 03:33:47,474 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:33:47,474 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:33:47,481 INFO  L85        PathProgramCache]: Analyzing trace with hash 2044956769, now seen corresponding path program 1 times
[2023-11-29 03:33:47,481 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:33:47,482 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858218795]
[2023-11-29 03:33:47,486 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:33:47,486 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:33:49,757 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:34:22,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:34:22,691 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:34:22,691 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858218795]
[2023-11-29 03:34:22,692 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858218795] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:34:22,692 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:34:22,694 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 03:34:22,694 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505194540]
[2023-11-29 03:34:22,694 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:34:22,711 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 03:34:22,712 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:34:22,723 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 03:34:22,723 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:34:22,727 INFO  L87              Difference]: Start difference. First operand 10193 states and 20273 transitions. Second operand  has 3 states, 3 states have (on average 3380.0) internal successors, (10140), 2 states have internal predecessors, (10140), 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)
[2023-11-29 03:35:04,976 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:35:04,977 INFO  L93              Difference]: Finished difference Result 30575 states and 60816 transitions.
[2023-11-29 03:35:04,977 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 03:35:04,980 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3380.0) internal successors, (10140), 2 states have internal predecessors, (10140), 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 10140
[2023-11-29 03:35:05,002 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:35:05,121 INFO  L225             Difference]: With dead ends: 30575
[2023-11-29 03:35:05,121 INFO  L226             Difference]: Without dead ends: 20383
[2023-11-29 03:35:05,135 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:35:05,137 INFO  L413           NwaCegarLoop]: 722 mSDtfsCounter, 434 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33703 mSolverCounterSat, 12060 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 45763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12060 IncrementalHoareTripleChecker+Valid, 33703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time
[2023-11-29 03:35:05,137 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 772 Invalid, 45763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12060 Valid, 33703 Invalid, 0 Unknown, 0 Unchecked, 41.5s Time]
[2023-11-29 03:35:05,171 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20383 states.
[2023-11-29 03:35:05,645 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20383 to 20383.
[2023-11-29 03:35:05,674 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20383 states, 20382 states have (on average 1.957069963693455) internal successors, (39889), 20382 states have internal predecessors, (39889), 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)
[2023-11-29 03:35:05,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 39889 transitions.
[2023-11-29 03:35:05,718 INFO  L78                 Accepts]: Start accepts. Automaton has 20383 states and 39889 transitions. Word has length 10140
[2023-11-29 03:35:05,737 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:35:05,737 INFO  L495      AbstractCegarLoop]: Abstraction has 20383 states and 39889 transitions.
[2023-11-29 03:35:05,740 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3380.0) internal successors, (10140), 2 states have internal predecessors, (10140), 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)
[2023-11-29 03:35:05,740 INFO  L276                IsEmpty]: Start isEmpty. Operand 20383 states and 39889 transitions.
[2023-11-29 03:35:06,529 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10146
[2023-11-29 03:35:06,529 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:35:06,536 INFO  L195           NwaCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 03:35:06,536 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 03:35:06,536 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:35:06,537 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:35:06,540 INFO  L85        PathProgramCache]: Analyzing trace with hash 1635737033, now seen corresponding path program 1 times
[2023-11-29 03:35:06,541 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:35:06,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840568448]
[2023-11-29 03:35:06,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:35:06,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:35:08,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:35:33,197 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:35:33,197 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:35:33,197 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840568448]
[2023-11-29 03:35:33,198 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840568448] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:35:33,198 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:35:33,201 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 03:35:33,201 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306858797]
[2023-11-29 03:35:33,201 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:35:33,213 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 03:35:33,213 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:35:33,223 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 03:35:33,223 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:35:33,226 INFO  L87              Difference]: Start difference. First operand 20383 states and 39889 transitions. Second operand  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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)
[2023-11-29 03:36:12,545 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:36:12,545 INFO  L93              Difference]: Finished difference Result 61145 states and 119664 transitions.
[2023-11-29 03:36:12,546 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 03:36:12,548 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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 10145
[2023-11-29 03:36:12,548 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:36:12,613 INFO  L225             Difference]: With dead ends: 61145
[2023-11-29 03:36:12,614 INFO  L226             Difference]: Without dead ends: 40763
[2023-11-29 03:36:12,626 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:36:12,628 INFO  L413           NwaCegarLoop]: 4820 mSDtfsCounter, 13686 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28826 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13686 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 40503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time
[2023-11-29 03:36:12,628 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13686 Valid, 4869 Invalid, 40503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28826 Invalid, 0 Unknown, 0 Unchecked, 38.5s Time]
[2023-11-29 03:36:12,670 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40763 states.
[2023-11-29 03:36:13,182 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40763 to 40763.
[2023-11-29 03:36:13,223 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40763 states, 40762 states have (on average 1.7314655806878956) internal successors, (70578), 40762 states have internal predecessors, (70578), 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)
[2023-11-29 03:36:13,276 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40763 states to 40763 states and 70578 transitions.
[2023-11-29 03:36:13,276 INFO  L78                 Accepts]: Start accepts. Automaton has 40763 states and 70578 transitions. Word has length 10145
[2023-11-29 03:36:13,278 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:36:13,278 INFO  L495      AbstractCegarLoop]: Abstraction has 40763 states and 70578 transitions.
[2023-11-29 03:36:13,280 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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)
[2023-11-29 03:36:13,281 INFO  L276                IsEmpty]: Start isEmpty. Operand 40763 states and 70578 transitions.
[2023-11-29 03:36:13,924 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10156
[2023-11-29 03:36:13,924 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:36:13,929 INFO  L195           NwaCegarLoop]: trace histogram [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, 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[2023-11-29 03:36:13,929 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 03:36:13,929 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:36:13,930 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:36:13,933 INFO  L85        PathProgramCache]: Analyzing trace with hash 1476439938, now seen corresponding path program 1 times
[2023-11-29 03:36:13,933 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:36:13,933 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503584433]
[2023-11-29 03:36:13,935 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:36:13,935 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:36:15,284 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:36:44,261 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:36:44,261 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:36:44,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503584433]
[2023-11-29 03:36:44,262 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503584433] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:36:44,262 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:36:44,263 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 03:36:44,264 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212466161]
[2023-11-29 03:36:44,264 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:36:44,273 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 03:36:44,273 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:36:44,283 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 03:36:44,283 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:36:44,286 INFO  L87              Difference]: Start difference. First operand 40763 states and 70578 transitions. Second operand  has 3 states, 3 states have (on average 3385.0) internal successors, (10155), 2 states have internal predecessors, (10155), 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)
[2023-11-29 03:37:21,960 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:37:21,960 INFO  L93              Difference]: Finished difference Result 122287 states and 211732 transitions.
[2023-11-29 03:37:21,960 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 03:37:21,962 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3385.0) internal successors, (10155), 2 states have internal predecessors, (10155), 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 10155
[2023-11-29 03:37:21,963 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:37:22,063 INFO  L225             Difference]: With dead ends: 122287
[2023-11-29 03:37:22,063 INFO  L226             Difference]: Without dead ends: 81525
[2023-11-29 03:37:22,092 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:37:22,094 INFO  L413           NwaCegarLoop]: 7616 mSDtfsCounter, 12055 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 35107 mSolverCounterSat, 6981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12055 SdHoareTripleChecker+Valid, 7666 SdHoareTripleChecker+Invalid, 42088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6981 IncrementalHoareTripleChecker+Valid, 35107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time
[2023-11-29 03:37:22,094 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12055 Valid, 7666 Invalid, 42088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6981 Valid, 35107 Invalid, 0 Unknown, 0 Unchecked, 36.8s Time]
[2023-11-29 03:37:22,167 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81525 states.
[2023-11-29 03:37:23,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81525 to 81523.
[2023-11-29 03:37:23,168 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81523 states, 81522 states have (on average 1.5510905031770565) internal successors, (126448), 81522 states have internal predecessors, (126448), 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)
[2023-11-29 03:37:23,280 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81523 states to 81523 states and 126448 transitions.
[2023-11-29 03:37:23,280 INFO  L78                 Accepts]: Start accepts. Automaton has 81523 states and 126448 transitions. Word has length 10155
[2023-11-29 03:37:23,282 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:37:23,282 INFO  L495      AbstractCegarLoop]: Abstraction has 81523 states and 126448 transitions.
[2023-11-29 03:37:23,284 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3385.0) internal successors, (10155), 2 states have internal predecessors, (10155), 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)
[2023-11-29 03:37:23,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 81523 states and 126448 transitions.
[2023-11-29 03:37:24,028 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10157
[2023-11-29 03:37:24,029 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:37:24,034 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:37:24,034 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 03:37:24,034 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:37:24,034 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:37:24,037 INFO  L85        PathProgramCache]: Analyzing trace with hash 194227026, now seen corresponding path program 1 times
[2023-11-29 03:37:24,037 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:37:24,037 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727144260]
[2023-11-29 03:37:24,038 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:37:24,038 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:37:25,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:37:51,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-11-29 03:37:51,022 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:37:51,022 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727144260]
[2023-11-29 03:37:51,023 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727144260] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:37:51,023 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:37:51,024 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 03:37:51,024 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392719726]
[2023-11-29 03:37:51,025 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:37:51,034 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 03:37:51,034 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:37:51,045 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 03:37:51,045 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:37:51,048 INFO  L87              Difference]: Start difference. First operand 81523 states and 126448 transitions. Second operand  has 3 states, 3 states have (on average 3384.0) internal successors, (10152), 2 states have internal predecessors, (10152), 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)
[2023-11-29 03:38:32,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:38:32,580 INFO  L93              Difference]: Finished difference Result 244565 states and 379341 transitions.
[2023-11-29 03:38:32,580 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 03:38:32,582 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3384.0) internal successors, (10152), 2 states have internal predecessors, (10152), 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 10156
[2023-11-29 03:38:32,582 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:38:32,749 INFO  L225             Difference]: With dead ends: 244565
[2023-11-29 03:38:32,749 INFO  L226             Difference]: Without dead ends: 163043
[2023-11-29 03:38:32,782 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:38:32,783 INFO  L413           NwaCegarLoop]: 6552 mSDtfsCounter, 13060 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27578 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13060 SdHoareTripleChecker+Valid, 6601 SdHoareTripleChecker+Invalid, 40608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time
[2023-11-29 03:38:32,783 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13060 Valid, 6601 Invalid, 40608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27578 Invalid, 0 Unknown, 0 Unchecked, 40.0s Time]
[2023-11-29 03:38:32,892 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163043 states.
[2023-11-29 03:38:34,317 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163043 to 163043.
[2023-11-29 03:38:34,399 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163043 states, 163042 states have (on average 1.3997374909532514) internal successors, (228216), 163042 states have internal predecessors, (228216), 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)
[2023-11-29 03:38:34,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163043 states to 163043 states and 228216 transitions.
[2023-11-29 03:38:34,579 INFO  L78                 Accepts]: Start accepts. Automaton has 163043 states and 228216 transitions. Word has length 10156
[2023-11-29 03:38:34,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:38:34,579 INFO  L495      AbstractCegarLoop]: Abstraction has 163043 states and 228216 transitions.
[2023-11-29 03:38:34,581 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3384.0) internal successors, (10152), 2 states have internal predecessors, (10152), 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)
[2023-11-29 03:38:34,581 INFO  L276                IsEmpty]: Start isEmpty. Operand 163043 states and 228216 transitions.
[2023-11-29 03:38:35,471 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10160
[2023-11-29 03:38:35,472 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:38:35,475 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 03:38:35,475 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 03:38:35,475 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:38:35,476 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:38:35,479 INFO  L85        PathProgramCache]: Analyzing trace with hash -181314134, now seen corresponding path program 1 times
[2023-11-29 03:38:35,479 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:38:35,479 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056694314]
[2023-11-29 03:38:35,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:38:35,480 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:38:36,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:38:58,830 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-11-29 03:38:58,830 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:38:58,831 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056694314]
[2023-11-29 03:38:58,831 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056694314] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:38:58,831 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:38:58,832 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 03:38:58,832 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413923651]
[2023-11-29 03:38:58,832 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:38:58,842 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 03:38:58,842 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:38:58,849 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 03:38:58,849 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:38:58,851 INFO  L87              Difference]: Start difference. First operand 163043 states and 228216 transitions. Second operand  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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)
[2023-11-29 03:39:38,239 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:39:38,239 INFO  L93              Difference]: Finished difference Result 489125 states and 684645 transitions.
[2023-11-29 03:39:38,239 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 03:39:38,241 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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 10159
[2023-11-29 03:39:38,241 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:39:38,609 INFO  L225             Difference]: With dead ends: 489125
[2023-11-29 03:39:38,610 INFO  L226             Difference]: Without dead ends: 326083
[2023-11-29 03:39:38,675 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:39:38,676 INFO  L413           NwaCegarLoop]: 7228 mSDtfsCounter, 12256 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29483 mSolverCounterSat, 11755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12256 SdHoareTripleChecker+Valid, 7277 SdHoareTripleChecker+Invalid, 41238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11755 IncrementalHoareTripleChecker+Valid, 29483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time
[2023-11-29 03:39:38,677 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12256 Valid, 7277 Invalid, 41238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11755 Valid, 29483 Invalid, 0 Unknown, 0 Unchecked, 37.3s Time]
[2023-11-29 03:39:39,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326083 states.
[2023-11-29 03:39:41,613 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326083 to 326083.
[2023-11-29 03:39:41,781 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326083 states, 326082 states have (on average 1.3036168816432676) internal successors, (425086), 326082 states have internal predecessors, (425086), 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)
[2023-11-29 03:39:42,185 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326083 states to 326083 states and 425086 transitions.
[2023-11-29 03:39:42,185 INFO  L78                 Accepts]: Start accepts. Automaton has 326083 states and 425086 transitions. Word has length 10159
[2023-11-29 03:39:42,186 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:39:42,186 INFO  L495      AbstractCegarLoop]: Abstraction has 326083 states and 425086 transitions.
[2023-11-29 03:39:42,188 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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)
[2023-11-29 03:39:42,188 INFO  L276                IsEmpty]: Start isEmpty. Operand 326083 states and 425086 transitions.
[2023-11-29 03:39:43,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10162
[2023-11-29 03:39:43,428 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:39:43,431 INFO  L195           NwaCegarLoop]: trace histogram [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, 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[2023-11-29 03:39:43,431 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-29 03:39:43,431 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:39:43,432 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:39:43,433 INFO  L85        PathProgramCache]: Analyzing trace with hash 558978801, now seen corresponding path program 1 times
[2023-11-29 03:39:43,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:39:43,434 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051232591]
[2023-11-29 03:39:43,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:39:43,434 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:39:44,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:40:20,717 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:40:20,717 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:40:20,717 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051232591]
[2023-11-29 03:40:20,718 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051232591] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:40:20,718 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:40:20,720 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 03:40:20,721 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073459131]
[2023-11-29 03:40:20,721 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:40:20,731 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 03:40:20,731 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:40:20,743 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 03:40:20,744 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:40:20,747 INFO  L87              Difference]: Start difference. First operand 326083 states and 425086 transitions. Second operand  has 3 states, 3 states have (on average 3387.0) internal successors, (10161), 2 states have internal predecessors, (10161), 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)
[2023-11-29 03:41:00,841 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 03:41:00,842 INFO  L93              Difference]: Finished difference Result 815205 states and 1047359 transitions.
[2023-11-29 03:41:00,842 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 03:41:00,844 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3387.0) internal successors, (10161), 2 states have internal predecessors, (10161), 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 10161
[2023-11-29 03:41:00,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 03:41:01,341 INFO  L225             Difference]: With dead ends: 815205
[2023-11-29 03:41:01,341 INFO  L226             Difference]: Without dead ends: 489123
[2023-11-29 03:41:01,445 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:41:01,446 INFO  L413           NwaCegarLoop]: 8143 mSDtfsCounter, 11069 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28560 mSolverCounterSat, 7491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11069 SdHoareTripleChecker+Valid, 8192 SdHoareTripleChecker+Invalid, 36051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7491 IncrementalHoareTripleChecker+Valid, 28560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time
[2023-11-29 03:41:01,446 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11069 Valid, 8192 Invalid, 36051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7491 Valid, 28560 Invalid, 0 Unknown, 0 Unchecked, 36.8s Time]
[2023-11-29 03:41:01,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 489123 states.
[2023-11-29 03:41:06,292 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 489123 to 489123.
[2023-11-29 03:41:06,549 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 489123 states, 489122 states have (on average 1.2361251385134997) internal successors, (604616), 489122 states have internal predecessors, (604616), 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)
[2023-11-29 03:41:07,118 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 489123 states to 489123 states and 604616 transitions.
[2023-11-29 03:41:07,119 INFO  L78                 Accepts]: Start accepts. Automaton has 489123 states and 604616 transitions. Word has length 10161
[2023-11-29 03:41:07,119 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 03:41:07,119 INFO  L495      AbstractCegarLoop]: Abstraction has 489123 states and 604616 transitions.
[2023-11-29 03:41:07,121 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3387.0) internal successors, (10161), 2 states have internal predecessors, (10161), 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)
[2023-11-29 03:41:07,121 INFO  L276                IsEmpty]: Start isEmpty. Operand 489123 states and 604616 transitions.
[2023-11-29 03:41:08,697 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10191
[2023-11-29 03:41:08,697 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 03:41:08,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 03:41:08,699 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-29 03:41:08,699 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 03:41:08,700 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 03:41:08,701 INFO  L85        PathProgramCache]: Analyzing trace with hash 1860128556, now seen corresponding path program 1 times
[2023-11-29 03:41:08,701 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 03:41:08,701 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557684029]
[2023-11-29 03:41:08,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 03:41:08,702 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 03:41:09,998 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 03:41:31,836 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 03:41:31,836 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 03:41:31,836 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557684029]
[2023-11-29 03:41:31,836 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557684029] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 03:41:31,836 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 03:41:31,838 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 03:41:31,838 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298318554]
[2023-11-29 03:41:31,838 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 03:41:31,845 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 03:41:31,845 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 03:41:31,851 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 03:41:31,851 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 03:41:31,853 INFO  L87              Difference]: Start difference. First operand 489123 states and 604616 transitions. Second operand  has 3 states, 3 states have (on average 3396.6666666666665) internal successors, (10190), 2 states have internal predecessors, (10190), 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)