./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme --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 64bit --witnessprinter.graph.data.programhash 3f0f6dc4c69710f9b49146a091b787943673df7efabfa4cf3572482098bcc06e
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-26 10:46:19,632 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-26 10:46:19,753 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-26 10:46:19,758 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-26 10:46:19,759 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-26 10:46:19,803 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-26 10:46:19,803 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-26 10:46:19,804 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-26 10:46:19,805 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-26 10:46:19,810 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-26 10:46:19,810 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-26 10:46:19,810 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-26 10:46:19,811 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-26 10:46:19,813 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-26 10:46:19,813 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-26 10:46:19,814 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-26 10:46:19,814 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-26 10:46:19,814 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-26 10:46:19,815 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-26 10:46:19,815 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-26 10:46:19,817 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-26 10:46:19,818 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-26 10:46:19,818 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-26 10:46:19,818 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-26 10:46:19,819 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-26 10:46:19,819 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-26 10:46:19,820 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-26 10:46:19,820 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-26 10:46:19,821 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 10:46:19,821 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-26 10:46:19,822 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-26 10:46:19,822 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-26 10:46:19,822 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-26 10:46:19,823 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-26 10:46:19,823 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-26 10:46:19,823 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-26 10:46:19,823 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-26 10:46:19,824 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-26 10:46:19,824 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-26 10:46:19,824 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_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/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_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme
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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f0f6dc4c69710f9b49146a091b787943673df7efabfa4cf3572482098bcc06e
[2023-11-26 10:46:20,154 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-26 10:46:20,188 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-26 10:46:20,191 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-26 10:46:20,193 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-26 10:46:20,194 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-26 10:46:20,195 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c
[2023-11-26 10:46:23,438 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-26 10:46:24,000 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-26 10:46:24,001 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c
[2023-11-26 10:46:24,032 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/data/f51b505e6/9ac653c2d0b44617af536c330bde36c5/FLAGaed827092
[2023-11-26 10:46:24,050 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/data/f51b505e6/9ac653c2d0b44617af536c330bde36c5
[2023-11-26 10:46:24,058 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-26 10:46:24,061 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-26 10:46:24,065 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-26 10:46:24,065 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-26 10:46:24,070 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-26 10:46:24,071 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:24" (1/1) ...
[2023-11-26 10:46:24,072 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109d7a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:24, skipping insertion in model container
[2023-11-26 10:46:24,073 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:24" (1/1) ...
[2023-11-26 10:46:24,189 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-26 10:46:24,458 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_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c[1177,1190]
[2023-11-26 10:46:25,381 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 10:46:25,393 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-26 10:46:25,407 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_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.5.prop1-back-serstep.c[1177,1190]
[2023-11-26 10:46:25,858 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 10:46:25,875 INFO  L206         MainTranslator]: Completed translation
[2023-11-26 10:46:25,876 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25 WrapperNode
[2023-11-26 10:46:25,876 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-26 10:46:25,877 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-26 10:46:25,878 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-26 10:46:25,878 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-26 10:46:25,886 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:26,008 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:27,626 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18079
[2023-11-26 10:46:27,627 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-26 10:46:27,628 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-26 10:46:27,628 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-26 10:46:27,628 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-26 10:46:27,640 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:27,640 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:28,070 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:28,408 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].
[2023-11-26 10:46:28,409 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:28,409 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:28,861 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:28,951 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:29,008 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:29,056 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:29,303 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-26 10:46:29,304 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-26 10:46:29,304 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-26 10:46:29,304 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-26 10:46:29,305 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (1/1) ...
[2023-11-26 10:46:29,311 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 10:46:29,322 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:46:29,338 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-26 10:46:29,352 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-26 10:46:29,491 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-26 10:46:29,491 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-26 10:46:29,492 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-26 10:46:29,492 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-26 10:46:30,365 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-26 10:46:30,368 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-26 10:46:44,164 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-26 10:46:44,471 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-26 10:46:44,471 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-26 10:46:44,473 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:44 BoogieIcfgContainer
[2023-11-26 10:46:44,474 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-26 10:46:44,476 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-26 10:46:44,477 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-26 10:46:44,480 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-26 10:46:44,480 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:46:24" (1/3) ...
[2023-11-26 10:46:44,481 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf157b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:44, skipping insertion in model container
[2023-11-26 10:46:44,481 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:25" (2/3) ...
[2023-11-26 10:46:44,482 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf157b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:44, skipping insertion in model container
[2023-11-26 10:46:44,482 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:44" (3/3) ...
[2023-11-26 10:46:44,483 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.collision.5.prop1-back-serstep.c
[2023-11-26 10:46:44,502 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-26 10:46:44,503 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-26 10:46:44,638 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-26 10:46:44,646 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;@2a910133, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-26 10:46:44,646 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-26 10:46:44,667 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4597 states, 4595 states have (on average 1.6772578890097933) internal successors, (7707), 4596 states have internal predecessors, (7707), 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)
[2023-11-26 10:46:44,709 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 375
[2023-11-26 10:46:44,711 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:46:44,713 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]
[2023-11-26 10:46:44,714 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:46:44,721 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:46:44,721 INFO  L85        PathProgramCache]: Analyzing trace with hash -1757282758, now seen corresponding path program 1 times
[2023-11-26 10:46:44,733 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:46:44,733 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854343579]
[2023-11-26 10:46:44,734 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:46:44,734 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:46:45,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:46:47,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 10:46:47,403 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:46:47,404 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854343579]
[2023-11-26 10:46:47,404 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854343579] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:46:47,405 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:46:47,405 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 10:46:47,407 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60514014]
[2023-11-26 10:46:47,409 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:46:47,416 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 10:46:47,417 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:46:47,448 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 10:46:47,449 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 10:46:47,462 INFO  L87              Difference]: Start difference. First operand  has 4597 states, 4595 states have (on average 1.6772578890097933) internal successors, (7707), 4596 states have internal predecessors, (7707), 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 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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)
[2023-11-26 10:46:47,801 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:46:47,801 INFO  L93              Difference]: Finished difference Result 9061 states and 15195 transitions.
[2023-11-26 10:46:47,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-26 10:46:47,804 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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 374
[2023-11-26 10:46:47,810 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:46:47,853 INFO  L225             Difference]: With dead ends: 9061
[2023-11-26 10:46:47,853 INFO  L226             Difference]: Without dead ends: 4597
[2023-11-26 10:46:47,866 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 10:46:47,870 INFO  L413           NwaCegarLoop]: 7700 mSDtfsCounter, 1 mSDsluCounter, 15395 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23095 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-26 10:46:47,871 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23095 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 10:46:47,902 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4597 states.
[2023-11-26 10:46:48,047 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 4597.
[2023-11-26 10:46:48,060 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4597 states, 4596 states have (on average 1.6764577893820714) internal successors, (7705), 4596 states have internal predecessors, (7705), 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)
[2023-11-26 10:46:48,079 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 7705 transitions.
[2023-11-26 10:46:48,081 INFO  L78                 Accepts]: Start accepts. Automaton has 4597 states and 7705 transitions. Word has length 374
[2023-11-26 10:46:48,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:46:48,083 INFO  L495      AbstractCegarLoop]: Abstraction has 4597 states and 7705 transitions.
[2023-11-26 10:46:48,084 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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)
[2023-11-26 10:46:48,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 4597 states and 7705 transitions.
[2023-11-26 10:46:48,091 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 376
[2023-11-26 10:46:48,091 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:46:48,092 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]
[2023-11-26 10:46:48,092 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-26 10:46:48,093 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:46:48,093 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:46:48,093 INFO  L85        PathProgramCache]: Analyzing trace with hash 1360536518, now seen corresponding path program 1 times
[2023-11-26 10:46:48,094 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:46:48,094 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516750124]
[2023-11-26 10:46:48,094 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:46:48,095 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:46:48,300 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:46:49,218 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 10:46:49,219 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:46:49,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516750124]
[2023-11-26 10:46:49,220 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516750124] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:46:49,220 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:46:49,220 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 10:46:49,221 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035856056]
[2023-11-26 10:46:49,221 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:46:49,225 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 10:46:49,230 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:46:49,231 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 10:46:49,232 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 10:46:49,233 INFO  L87              Difference]: Start difference. First operand 4597 states and 7705 transitions. Second operand  has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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)
[2023-11-26 10:46:49,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:46:49,508 INFO  L93              Difference]: Finished difference Result 9064 states and 15193 transitions.
[2023-11-26 10:46:49,509 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-26 10:46:49,509 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 375
[2023-11-26 10:46:49,511 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:46:49,540 INFO  L225             Difference]: With dead ends: 9064
[2023-11-26 10:46:49,540 INFO  L226             Difference]: Without dead ends: 4600
[2023-11-26 10:46:49,547 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 10:46:49,548 INFO  L413           NwaCegarLoop]: 7700 mSDtfsCounter, 1 mSDsluCounter, 15393 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23093 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-26 10:46:49,549 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23093 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 10:46:49,562 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4600 states.
[2023-11-26 10:46:49,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 4599.
[2023-11-26 10:46:49,663 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4599 states, 4598 states have (on average 1.676163549369291) internal successors, (7707), 4598 states have internal predecessors, (7707), 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)
[2023-11-26 10:46:49,684 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 7707 transitions.
[2023-11-26 10:46:49,684 INFO  L78                 Accepts]: Start accepts. Automaton has 4599 states and 7707 transitions. Word has length 375
[2023-11-26 10:46:49,686 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:46:49,686 INFO  L495      AbstractCegarLoop]: Abstraction has 4599 states and 7707 transitions.
[2023-11-26 10:46:49,687 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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)
[2023-11-26 10:46:49,687 INFO  L276                IsEmpty]: Start isEmpty. Operand 4599 states and 7707 transitions.
[2023-11-26 10:46:49,693 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 377
[2023-11-26 10:46:49,693 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:46:49,694 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]
[2023-11-26 10:46:49,695 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-26 10:46:49,695 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:46:49,696 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:46:49,697 INFO  L85        PathProgramCache]: Analyzing trace with hash -983471148, now seen corresponding path program 1 times
[2023-11-26 10:46:49,697 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:46:49,697 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978129660]
[2023-11-26 10:46:49,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:46:49,698 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:46:49,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:46:50,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 10:46:50,787 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:46:50,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978129660]
[2023-11-26 10:46:50,788 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978129660] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:46:50,788 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:46:50,789 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 10:46:50,789 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907134473]
[2023-11-26 10:46:50,790 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:46:50,791 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 10:46:50,791 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:46:50,792 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 10:46:50,795 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 10:46:50,796 INFO  L87              Difference]: Start difference. First operand 4599 states and 7707 transitions. Second operand  has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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)
[2023-11-26 10:46:51,216 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:46:51,217 INFO  L93              Difference]: Finished difference Result 13525 states and 22670 transitions.
[2023-11-26 10:46:51,217 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-26 10:46:51,218 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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 376
[2023-11-26 10:46:51,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:46:51,271 INFO  L225             Difference]: With dead ends: 13525
[2023-11-26 10:46:51,272 INFO  L226             Difference]: Without dead ends: 9059
[2023-11-26 10:46:51,282 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
[2023-11-26 10:46:51,286 INFO  L413           NwaCegarLoop]: 8395 mSDtfsCounter, 7473 mSDsluCounter, 16086 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7473 SdHoareTripleChecker+Valid, 24481 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-26 10:46:51,287 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7473 Valid, 24481 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 10:46:51,303 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9059 states.
[2023-11-26 10:46:51,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9059 to 4601.
[2023-11-26 10:46:51,453 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4601 states, 4600 states have (on average 1.6758695652173914) internal successors, (7709), 4600 states have internal predecessors, (7709), 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)
[2023-11-26 10:46:51,473 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 7709 transitions.
[2023-11-26 10:46:51,474 INFO  L78                 Accepts]: Start accepts. Automaton has 4601 states and 7709 transitions. Word has length 376
[2023-11-26 10:46:51,475 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:46:51,475 INFO  L495      AbstractCegarLoop]: Abstraction has 4601 states and 7709 transitions.
[2023-11-26 10:46:51,477 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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)
[2023-11-26 10:46:51,477 INFO  L276                IsEmpty]: Start isEmpty. Operand 4601 states and 7709 transitions.
[2023-11-26 10:46:51,485 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 378
[2023-11-26 10:46:51,485 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:46:51,486 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]
[2023-11-26 10:46:51,492 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-26 10:46:51,493 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:46:51,493 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:46:51,494 INFO  L85        PathProgramCache]: Analyzing trace with hash 1177074476, now seen corresponding path program 1 times
[2023-11-26 10:46:51,494 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:46:51,494 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471533778]
[2023-11-26 10:46:51,494 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:46:51,495 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:46:51,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:46:52,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 10:46:52,847 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:46:52,847 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471533778]
[2023-11-26 10:46:52,847 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471533778] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:46:52,847 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:46:52,848 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-26 10:46:52,848 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33696777]
[2023-11-26 10:46:52,848 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:46:52,849 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-26 10:46:52,850 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:46:52,851 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-26 10:46:52,851 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-26 10:46:52,852 INFO  L87              Difference]: Start difference. First operand 4601 states and 7709 transitions. Second operand  has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 5 states have internal predecessors, (377), 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)
[2023-11-26 10:46:53,596 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:46:53,596 INFO  L93              Difference]: Finished difference Result 13948 states and 23371 transitions.
[2023-11-26 10:46:53,597 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-26 10:46:53,597 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 5 states have internal predecessors, (377), 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 377
[2023-11-26 10:46:53,599 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:46:53,663 INFO  L225             Difference]: With dead ends: 13948
[2023-11-26 10:46:53,663 INFO  L226             Difference]: Without dead ends: 9480
[2023-11-26 10:46:53,672 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-11-26 10:46:53,680 INFO  L413           NwaCegarLoop]: 8394 mSDtfsCounter, 30452 mSDsluCounter, 23784 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30452 SdHoareTripleChecker+Valid, 32178 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-26 10:46:53,681 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30452 Valid, 32178 Invalid, 26 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-26 10:46:53,701 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9480 states.
[2023-11-26 10:46:53,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9480 to 5018.
[2023-11-26 10:46:53,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5018 states, 5017 states have (on average 1.675104644209687) internal successors, (8404), 5017 states have internal predecessors, (8404), 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)
[2023-11-26 10:46:53,904 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8404 transitions.
[2023-11-26 10:46:53,905 INFO  L78                 Accepts]: Start accepts. Automaton has 5018 states and 8404 transitions. Word has length 377
[2023-11-26 10:46:53,906 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:46:53,906 INFO  L495      AbstractCegarLoop]: Abstraction has 5018 states and 8404 transitions.
[2023-11-26 10:46:53,907 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 5 states have internal predecessors, (377), 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)
[2023-11-26 10:46:53,907 INFO  L276                IsEmpty]: Start isEmpty. Operand 5018 states and 8404 transitions.
[2023-11-26 10:46:54,203 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3109
[2023-11-26 10:46:54,204 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:46:54,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:46:54,207 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-26 10:46:54,207 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:46:54,208 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:46:54,209 INFO  L85        PathProgramCache]: Analyzing trace with hash -1980118489, now seen corresponding path program 1 times
[2023-11-26 10:46:54,210 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:46:54,210 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793695720]
[2023-11-26 10:46:54,211 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:46:54,211 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:46:54,774 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-26 10:46:54,774 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405574656]
[2023-11-26 10:46:54,775 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:46:54,776 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:46:54,776 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:46:54,783 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 10:46:54,811 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-26 10:46:59,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 10:46:59,335 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12602 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-26 10:46:59,452 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-26 10:46:59,695 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-26 10:46:59,696 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-26 10:46:59,696 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 10:46:59,696 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793695720]
[2023-11-26 10:46:59,696 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-26 10:46:59,697 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405574656]
[2023-11-26 10:46:59,697 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [405574656] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 10:46:59,697 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 10:46:59,698 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-26 10:46:59,698 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031120763]
[2023-11-26 10:46:59,699 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 10:46:59,704 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-26 10:46:59,705 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 10:46:59,710 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-26 10:46:59,710 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 10:46:59,712 INFO  L87              Difference]: Start difference. First operand 5018 states and 8404 transitions. Second operand  has 4 states, 4 states have (on average 777.0) internal successors, (3108), 4 states have internal predecessors, (3108), 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)
[2023-11-26 10:46:59,953 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 10:46:59,954 INFO  L93              Difference]: Finished difference Result 9496 states and 15908 transitions.
[2023-11-26 10:46:59,954 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-26 10:46:59,956 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 777.0) internal successors, (3108), 4 states have internal predecessors, (3108), 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 3108
[2023-11-26 10:46:59,958 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 10:46:59,969 INFO  L225             Difference]: With dead ends: 9496
[2023-11-26 10:46:59,969 INFO  L226             Difference]: Without dead ends: 5028
[2023-11-26 10:46:59,976 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3107 GetRequests, 3105 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-26 10:46:59,977 INFO  L413           NwaCegarLoop]: 7700 mSDtfsCounter, 12 mSDsluCounter, 15390 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23090 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-26 10:46:59,978 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23090 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 10:46:59,988 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5028 states.
[2023-11-26 10:47:00,085 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 5020.
[2023-11-26 10:47:00,094 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5020 states, 5019 states have (on average 1.6748356246264196) internal successors, (8406), 5019 states have internal predecessors, (8406), 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)
[2023-11-26 10:47:00,107 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 8406 transitions.
[2023-11-26 10:47:00,107 INFO  L78                 Accepts]: Start accepts. Automaton has 5020 states and 8406 transitions. Word has length 3108
[2023-11-26 10:47:00,109 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 10:47:00,110 INFO  L495      AbstractCegarLoop]: Abstraction has 5020 states and 8406 transitions.
[2023-11-26 10:47:00,112 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 777.0) internal successors, (3108), 4 states have internal predecessors, (3108), 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)
[2023-11-26 10:47:00,112 INFO  L276                IsEmpty]: Start isEmpty. Operand 5020 states and 8406 transitions.
[2023-11-26 10:47:00,257 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3109
[2023-11-26 10:47:00,258 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 10:47:00,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 10:47:00,307 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-26 10:47:00,479 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:47:00,480 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 10:47:00,480 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 10:47:00,481 INFO  L85        PathProgramCache]: Analyzing trace with hash -7121419, now seen corresponding path program 1 times
[2023-11-26 10:47:00,482 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 10:47:00,482 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50518509]
[2023-11-26 10:47:00,483 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:47:00,483 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 10:47:01,027 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-26 10:47:01,027 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369999876]
[2023-11-26 10:47:01,028 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 10:47:01,028 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 10:47:01,029 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 10:47:01,030 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 10:47:01,056 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8989e2ec-768d-4f0e-b9f7-e2d14dee6f8a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process