./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 9bd2c7ff
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_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu --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 78c65132cf8567cb0e48833586d6715b235e5b9872da28c578d017ab5b668f03
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 08:04:56,470 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-19 08:04:56,579 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-19 08:04:56,592 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 08:04:56,593 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 08:04:56,633 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 08:04:56,651 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 08:04:56,652 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 08:04:56,653 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 08:04:56,655 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 08:04:56,656 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 08:04:56,657 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-19 08:04:56,659 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-19 08:04:56,662 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 08:04:56,663 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-19 08:04:56,663 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-19 08:04:56,664 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-19 08:04:56,670 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 08:04:56,671 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 08:04:56,671 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 08:04:56,672 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-19 08:04:56,673 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-19 08:04:56,673 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 08:04:56,673 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-19 08:04:56,674 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-19 08:04:56,674 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:04:56,675 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 08:04:56,675 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 08:04:56,676 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 08:04:56,676 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-19 08:04:56,677 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 08:04:56,678 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 08:04:56,679 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 08:04:56,679 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 08:04:56,679 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 08:04:56,680 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 08:04:56,680 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_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/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_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu
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 -> 78c65132cf8567cb0e48833586d6715b235e5b9872da28c578d017ab5b668f03
[2023-11-19 08:04:56,986 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 08:04:57,013 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 08:04:57,016 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 08:04:57,019 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-19 08:04:57,020 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-19 08:04:57,022 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-back-serstep.c
[2023-11-19 08:05:00,148 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-19 08:05:00,596 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-19 08:05:00,597 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-back-serstep.c
[2023-11-19 08:05:00,626 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/data/539e30b3b/ff0ef9455eef4cbfa1191e77a07a37af/FLAG1fdaa9157
[2023-11-19 08:05:00,641 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/data/539e30b3b/ff0ef9455eef4cbfa1191e77a07a37af
[2023-11-19 08:05:00,643 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 08:05:00,645 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 08:05:00,646 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 08:05:00,647 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 08:05:00,652 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 08:05:00,653 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:00" (1/1) ...
[2023-11-19 08:05:00,654 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe86476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:00, skipping insertion in model container
[2023-11-19 08:05:00,655 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:00" (1/1) ...
[2023-11-19 08:05:00,740 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-19 08:05:01,028 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_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-back-serstep.c[1177,1190]
[2023-11-19 08:05:01,883 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:05:01,899 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-19 08:05:01,912 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_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-back-serstep.c[1177,1190]
[2023-11-19 08:05:02,400 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:05:02,423 INFO  L206         MainTranslator]: Completed translation
[2023-11-19 08:05:02,424 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02 WrapperNode
[2023-11-19 08:05:02,424 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 08:05:02,426 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 08:05:02,426 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 08:05:02,426 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 08:05:02,434 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:02,561 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:04,332 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18118
[2023-11-19 08:05:04,333 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 08:05:04,333 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 08:05:04,333 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 08:05:04,333 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 08:05:04,345 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:04,345 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:04,703 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:04,703 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:05,339 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:05,432 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:05,602 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:05,658 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:05,985 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 08:05:05,987 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 08:05:05,987 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 08:05:05,987 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-19 08:05:05,989 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (1/1) ...
[2023-11-19 08:05:05,996 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:05:06,011 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:05:06,027 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 08:05:06,040 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 08:05:06,068 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 08:05:06,068 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 08:05:06,069 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 08:05:06,069 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 08:05:07,031 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-19 08:05:07,033 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 08:05:20,525 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-19 08:05:20,571 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 08:05:20,571 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-19 08:05:20,593 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:20 BoogieIcfgContainer
[2023-11-19 08:05:20,594 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 08:05:20,597 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 08:05:20,598 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 08:05:20,601 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-19 08:05:20,601 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:00" (1/3) ...
[2023-11-19 08:05:20,602 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4cf532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:20, skipping insertion in model container
[2023-11-19 08:05:20,602 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:02" (2/3) ...
[2023-11-19 08:05:20,604 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4cf532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:20, skipping insertion in model container
[2023-11-19 08:05:20,605 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:20" (3/3) ...
[2023-11-19 08:05:20,607 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.collision.4.prop1-back-serstep.c
[2023-11-19 08:05:20,625 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 08:05:20,625 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 08:05:20,762 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 08:05:20,771 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;@306f4932, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 08:05:20,772 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 08:05:20,792 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4609 states, 4607 states have (on average 1.6767961797265032) internal successors, (7725), 4608 states have internal predecessors, (7725), 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)
[2023-11-19 08:05:20,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 376
[2023-11-19 08:05:20,827 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 08:05:20,828 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]
[2023-11-19 08:05:20,828 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:05:20,834 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:05:20,834 INFO  L85        PathProgramCache]: Analyzing trace with hash -1379831134, now seen corresponding path program 1 times
[2023-11-19 08:05:20,846 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:05:20,847 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438192214]
[2023-11-19 08:05:20,848 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:05:20,848 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:05:21,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:05:23,358 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:05:23,359 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:05:23,359 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438192214]
[2023-11-19 08:05:23,360 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438192214] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:05:23,360 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:05:23,361 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:05:23,362 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572605194]
[2023-11-19 08:05:23,368 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:05:23,383 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:05:23,383 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:05:23,452 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:05:23,453 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:05:23,467 INFO  L87              Difference]: Start difference. First operand  has 4609 states, 4607 states have (on average 1.6767961797265032) internal successors, (7725), 4608 states have internal predecessors, (7725), 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 93.75) 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)
[2023-11-19 08:05:23,884 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:05:23,885 INFO  L93              Difference]: Finished difference Result 9082 states and 15228 transitions.
[2023-11-19 08:05:23,886 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 08:05:23,888 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
[2023-11-19 08:05:23,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:05:23,937 INFO  L225             Difference]: With dead ends: 9082
[2023-11-19 08:05:23,938 INFO  L226             Difference]: Without dead ends: 4607
[2023-11-19 08:05:23,952 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
[2023-11-19 08:05:23,958 INFO  L413           NwaCegarLoop]: 7717 mSDtfsCounter, 1 mSDsluCounter, 15428 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23145 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 08:05:23,960 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23145 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 08:05:23,990 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4607 states.
[2023-11-19 08:05:24,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 4607.
[2023-11-19 08:05:24,151 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4607 states, 4606 states have (on average 1.6762917933130699) internal successors, (7721), 4606 states have internal predecessors, (7721), 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)
[2023-11-19 08:05:24,172 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 7721 transitions.
[2023-11-19 08:05:24,173 INFO  L78                 Accepts]: Start accepts. Automaton has 4607 states and 7721 transitions. Word has length 375
[2023-11-19 08:05:24,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:05:24,178 INFO  L495      AbstractCegarLoop]: Abstraction has 4607 states and 7721 transitions.
[2023-11-19 08:05:24,179 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)
[2023-11-19 08:05:24,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 4607 states and 7721 transitions.
[2023-11-19 08:05:24,191 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 377
[2023-11-19 08:05:24,191 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 08:05:24,192 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]
[2023-11-19 08:05:24,192 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 08:05:24,193 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:05:24,193 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:05:24,194 INFO  L85        PathProgramCache]: Analyzing trace with hash 176634974, now seen corresponding path program 1 times
[2023-11-19 08:05:24,194 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:05:24,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431206723]
[2023-11-19 08:05:24,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:05:24,195 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:05:24,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:05:25,393 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:05:25,394 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:05:25,394 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431206723]
[2023-11-19 08:05:25,394 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431206723] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:05:25,394 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:05:25,395 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:05:25,395 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77980440]
[2023-11-19 08:05:25,395 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:05:25,397 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:05:25,397 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:05:25,398 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:05:25,399 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:05:25,399 INFO  L87              Difference]: Start difference. First operand 4607 states and 7721 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)
[2023-11-19 08:05:25,686 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:05:25,686 INFO  L93              Difference]: Finished difference Result 9083 states and 15224 transitions.
[2023-11-19 08:05:25,687 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 08:05:25,687 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
[2023-11-19 08:05:25,688 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:05:25,713 INFO  L225             Difference]: With dead ends: 9083
[2023-11-19 08:05:25,714 INFO  L226             Difference]: Without dead ends: 4610
[2023-11-19 08:05:25,727 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
[2023-11-19 08:05:25,730 INFO  L413           NwaCegarLoop]: 7717 mSDtfsCounter, 1 mSDsluCounter, 15425 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23142 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:05:25,730 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23142 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:05:25,743 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4610 states.
[2023-11-19 08:05:25,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4609.
[2023-11-19 08:05:25,837 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4609 states, 4608 states have (on average 1.6759982638888888) internal successors, (7723), 4608 states have internal predecessors, (7723), 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)
[2023-11-19 08:05:25,855 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 7723 transitions.
[2023-11-19 08:05:25,855 INFO  L78                 Accepts]: Start accepts. Automaton has 4609 states and 7723 transitions. Word has length 376
[2023-11-19 08:05:25,856 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:05:25,856 INFO  L495      AbstractCegarLoop]: Abstraction has 4609 states and 7723 transitions.
[2023-11-19 08:05:25,857 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)
[2023-11-19 08:05:25,857 INFO  L276                IsEmpty]: Start isEmpty. Operand 4609 states and 7723 transitions.
[2023-11-19 08:05:25,864 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 378
[2023-11-19 08:05:25,864 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 08:05:25,865 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]
[2023-11-19 08:05:25,865 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 08:05:25,865 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:05:25,866 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:05:25,866 INFO  L85        PathProgramCache]: Analyzing trace with hash 970286652, now seen corresponding path program 1 times
[2023-11-19 08:05:25,866 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:05:25,867 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057668822]
[2023-11-19 08:05:25,867 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:05:25,867 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:05:26,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:05:26,936 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:05:26,937 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:05:26,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057668822]
[2023-11-19 08:05:26,938 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057668822] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:05:26,939 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:05:26,939 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:05:26,940 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644197273]
[2023-11-19 08:05:26,940 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:05:26,941 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:05:26,941 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:05:26,943 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:05:26,943 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:05:26,943 INFO  L87              Difference]: Start difference. First operand 4609 states and 7723 transitions. Second operand  has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 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)
[2023-11-19 08:05:27,494 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:05:27,496 INFO  L93              Difference]: Finished difference Result 13553 states and 22716 transitions.
[2023-11-19 08:05:27,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-19 08:05:27,497 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 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
[2023-11-19 08:05:27,498 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:05:27,548 INFO  L225             Difference]: With dead ends: 13553
[2023-11-19 08:05:27,548 INFO  L226             Difference]: Without dead ends: 9078
[2023-11-19 08:05:27,559 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
[2023-11-19 08:05:27,565 INFO  L413           NwaCegarLoop]: 8412 mSDtfsCounter, 7488 mSDsluCounter, 16118 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7488 SdHoareTripleChecker+Valid, 24530 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:05:27,567 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7488 Valid, 24530 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:05:27,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9078 states.
[2023-11-19 08:05:27,731 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9078 to 4611.
[2023-11-19 08:05:27,750 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4611 states, 4610 states have (on average 1.675704989154013) internal successors, (7725), 4610 states have internal predecessors, (7725), 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)
[2023-11-19 08:05:27,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 7725 transitions.
[2023-11-19 08:05:27,784 INFO  L78                 Accepts]: Start accepts. Automaton has 4611 states and 7725 transitions. Word has length 377
[2023-11-19 08:05:27,785 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:05:27,786 INFO  L495      AbstractCegarLoop]: Abstraction has 4611 states and 7725 transitions.
[2023-11-19 08:05:27,788 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 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)
[2023-11-19 08:05:27,790 INFO  L276                IsEmpty]: Start isEmpty. Operand 4611 states and 7725 transitions.
[2023-11-19 08:05:27,798 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 379
[2023-11-19 08:05:27,799 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 08:05:27,799 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:05:27,800 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 08:05:27,801 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:05:27,802 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:05:27,802 INFO  L85        PathProgramCache]: Analyzing trace with hash 1614024132, now seen corresponding path program 1 times
[2023-11-19 08:05:27,803 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:05:27,809 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179398916]
[2023-11-19 08:05:27,809 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:05:27,810 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:05:28,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:05:29,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:05:29,213 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:05:29,213 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179398916]
[2023-11-19 08:05:29,214 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179398916] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:05:29,214 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:05:29,214 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-19 08:05:29,215 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007619156]
[2023-11-19 08:05:29,215 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:05:29,216 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 08:05:29,216 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:05:29,217 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 08:05:29,218 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-19 08:05:29,218 INFO  L87              Difference]: Start difference. First operand 4611 states and 7725 transitions. Second operand  has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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)
[2023-11-19 08:05:29,972 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:05:29,972 INFO  L93              Difference]: Finished difference Result 13976 states and 23417 transitions.
[2023-11-19 08:05:29,973 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-19 08:05:29,973 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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 378
[2023-11-19 08:05:29,974 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:05:30,013 INFO  L225             Difference]: With dead ends: 13976
[2023-11-19 08:05:30,013 INFO  L226             Difference]: Without dead ends: 9499
[2023-11-19 08:05:30,020 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-11-19 08:05:30,021 INFO  L413           NwaCegarLoop]: 8411 mSDtfsCounter, 30512 mSDsluCounter, 22913 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30512 SdHoareTripleChecker+Valid, 31324 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:05:30,022 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30512 Valid, 31324 Invalid, 19 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:05:30,038 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9499 states.
[2023-11-19 08:05:30,158 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9499 to 5028.
[2023-11-19 08:05:30,167 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5028 states, 5027 states have (on average 1.6749552416948479) internal successors, (8420), 5027 states have internal predecessors, (8420), 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)
[2023-11-19 08:05:30,192 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 8420 transitions.
[2023-11-19 08:05:30,192 INFO  L78                 Accepts]: Start accepts. Automaton has 5028 states and 8420 transitions. Word has length 378
[2023-11-19 08:05:30,193 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:05:30,193 INFO  L495      AbstractCegarLoop]: Abstraction has 5028 states and 8420 transitions.
[2023-11-19 08:05:30,193 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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)
[2023-11-19 08:05:30,194 INFO  L276                IsEmpty]: Start isEmpty. Operand 5028 states and 8420 transitions.
[2023-11-19 08:05:30,443 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3116
[2023-11-19 08:05:30,444 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 08:05:30,446 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, 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[2023-11-19 08:05:30,447 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 08:05:30,447 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:05:30,447 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:05:30,449 INFO  L85        PathProgramCache]: Analyzing trace with hash -626846960, now seen corresponding path program 1 times
[2023-11-19 08:05:30,449 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:05:30,449 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093615844]
[2023-11-19 08:05:30,450 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:05:30,450 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:05:30,891 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 08:05:30,891 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161632538]
[2023-11-19 08:05:30,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:05:30,892 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:05:30,893 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:05:30,895 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:05:30,919 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 08:05:34,899 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:05:34,992 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12626 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-19 08:05:35,097 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:05:35,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:05:35,260 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 08:05:35,260 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:05:35,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093615844]
[2023-11-19 08:05:35,261 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-19 08:05:35,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161632538]
[2023-11-19 08:05:35,261 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161632538] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:05:35,262 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:05:35,263 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:05:35,263 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309761270]
[2023-11-19 08:05:35,264 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:05:35,269 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:05:35,269 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:05:35,274 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:05:35,275 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:05:35,277 INFO  L87              Difference]: Start difference. First operand 5028 states and 8420 transitions. Second operand  has 4 states, 4 states have (on average 778.75) internal successors, (3115), 4 states have internal predecessors, (3115), 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)
[2023-11-19 08:05:35,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:05:35,518 INFO  L93              Difference]: Finished difference Result 9515 states and 15939 transitions.
[2023-11-19 08:05:35,518 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 08:05:35,520 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 778.75) internal successors, (3115), 4 states have internal predecessors, (3115), 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 3115
[2023-11-19 08:05:35,522 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:05:35,533 INFO  L225             Difference]: With dead ends: 9515
[2023-11-19 08:05:35,533 INFO  L226             Difference]: Without dead ends: 5038
[2023-11-19 08:05:35,540 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3114 GetRequests, 3112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:05:35,541 INFO  L413           NwaCegarLoop]: 7717 mSDtfsCounter, 12 mSDsluCounter, 15422 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23139 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:05:35,542 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23139 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:05:35,553 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5038 states.
[2023-11-19 08:05:35,644 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 5030.
[2023-11-19 08:05:35,653 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5030 states, 5029 states have (on average 1.674686816464506) internal successors, (8422), 5029 states have internal predecessors, (8422), 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)
[2023-11-19 08:05:35,667 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5030 states to 5030 states and 8422 transitions.
[2023-11-19 08:05:35,667 INFO  L78                 Accepts]: Start accepts. Automaton has 5030 states and 8422 transitions. Word has length 3115
[2023-11-19 08:05:35,669 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:05:35,669 INFO  L495      AbstractCegarLoop]: Abstraction has 5030 states and 8422 transitions.
[2023-11-19 08:05:35,671 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 778.75) internal successors, (3115), 4 states have internal predecessors, (3115), 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)
[2023-11-19 08:05:35,671 INFO  L276                IsEmpty]: Start isEmpty. Operand 5030 states and 8422 transitions.
[2023-11-19 08:05:35,748 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3116
[2023-11-19 08:05:35,749 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 08:05:35,751 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, 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[2023-11-19 08:05:35,813 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 08:05:35,967 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:05:35,968 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:05:35,968 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:05:35,969 INFO  L85        PathProgramCache]: Analyzing trace with hash -1930687394, now seen corresponding path program 1 times
[2023-11-19 08:05:35,970 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:05:35,970 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116794215]
[2023-11-19 08:05:35,970 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:05:35,971 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:05:36,418 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 08:05:36,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774832497]
[2023-11-19 08:05:36,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:05:36,420 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:05:36,420 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:05:36,421 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:05:36,443 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f39aeb-abcc-4042-bc4d-3f15bd2fb740/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 08:05:40,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:05:40,404 INFO  L262         TraceCheckSpWp]: Trace formula consists of 12627 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-19 08:05:40,517 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:05:40,682 INFO  L134       CoverageAnalysis]: Checked inductivity of 284 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:05:40,682 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 08:05:40,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace