./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e77897bf0c0355da39ab9d60964373b1d092435579efbe2948ef80a499f9d265
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 04:30:59,567 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 04:30:59,628 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 04:30:59,632 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 04:30:59,632 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 04:30:59,655 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 04:30:59,656 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 04:30:59,657 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 04:30:59,657 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 04:30:59,658 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 04:30:59,658 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 04:30:59,659 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 04:30:59,660 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 04:30:59,660 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 04:30:59,661 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 04:30:59,661 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 04:30:59,662 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 04:30:59,663 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 04:30:59,663 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 04:30:59,664 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 04:30:59,664 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 04:30:59,665 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 04:30:59,666 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 04:30:59,666 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 04:30:59,667 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 04:30:59,667 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 04:30:59,667 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 04:30:59,668 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 04:30:59,668 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:30:59,669 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 04:30:59,669 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 04:30:59,670 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 04:30:59,670 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 04:30:59,670 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 04:30:59,670 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 04:30:59,671 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 04:30:59,671 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 04:30:59,671 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 04:30:59,671 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 04:30:59,671 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_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e77897bf0c0355da39ab9d60964373b1d092435579efbe2948ef80a499f9d265
[2023-11-29 04:30:59,882 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 04:30:59,903 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 04:30:59,906 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 04:30:59,907 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 04:30:59,907 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 04:30:59,909 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c
[2023-11-29 04:31:02,685 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 04:31:03,058 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 04:31:03,059 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c
[2023-11-29 04:31:03,091 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/data/7cba3f388/d25267171f0e4caab7437096dd2e4b2e/FLAGa3f5a4f14
[2023-11-29 04:31:03,104 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/data/7cba3f388/d25267171f0e4caab7437096dd2e4b2e
[2023-11-29 04:31:03,107 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 04:31:03,108 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 04:31:03,110 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 04:31:03,110 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 04:31:03,114 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 04:31:03,115 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:31:03" (1/1) ...
[2023-11-29 04:31:03,116 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7804498a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:03, skipping insertion in model container
[2023-11-29 04:31:03,116 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:31:03" (1/1) ...
[2023-11-29 04:31:03,241 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 04:31:03,450 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_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c[1176,1189]
[2023-11-29 04:31:04,179 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:31:04,189 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 04:31:04,200 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_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c[1176,1189]
[2023-11-29 04:31:04,755 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:31:04,772 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 04:31:04,772 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04 WrapperNode
[2023-11-29 04:31:04,773 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 04:31:04,774 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 04:31:04,774 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 04:31:04,774 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 04:31:04,782 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:05,002 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:07,048 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28260
[2023-11-29 04:31:07,048 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 04:31:07,049 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 04:31:07,049 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 04:31:07,049 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 04:31:07,059 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:07,060 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:07,534 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:07,852 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 04:31:07,852 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:07,853 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:08,414 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:08,496 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:08,661 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:08,757 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:09,110 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 04:31:09,111 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 04:31:09,111 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 04:31:09,112 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 04:31:09,112 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (1/1) ...
[2023-11-29 04:31:09,119 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:31:09,129 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:09,143 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 04:31:09,144 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 04:31:09,178 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 04:31:09,178 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 04:31:09,178 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 04:31:09,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 04:31:10,320 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 04:31:10,323 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 04:31:24,598 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 04:31:24,994 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 04:31:24,995 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 04:31:24,998 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:31:24 BoogieIcfgContainer
[2023-11-29 04:31:24,998 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 04:31:25,001 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 04:31:25,002 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 04:31:25,005 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 04:31:25,006 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:31:03" (1/3) ...
[2023-11-29 04:31:25,006 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7896b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:31:25, skipping insertion in model container
[2023-11-29 04:31:25,007 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:04" (2/3) ...
[2023-11-29 04:31:25,007 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7896b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:31:25, skipping insertion in model container
[2023-11-29 04:31:25,007 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:31:24" (3/3) ...
[2023-11-29 04:31:25,009 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.6.prop1-func-interl.c
[2023-11-29 04:31:25,030 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 04:31:25,030 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 04:31:25,196 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 04:31:25,203 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;@106e494d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 04:31:25,204 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 04:31:25,229 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6455 states, 6453 states have (on average 1.6703858670385867) internal successors, (10779), 6454 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:25,256 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 333
[2023-11-29 04:31:25,257 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:25,258 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]
[2023-11-29 04:31:25,259 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:25,264 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:25,265 INFO  L85        PathProgramCache]: Analyzing trace with hash 379053561, now seen corresponding path program 1 times
[2023-11-29 04:31:25,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:25,275 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009712346]
[2023-11-29 04:31:25,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:25,276 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:25,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:27,092 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:31:27,093 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:27,093 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009712346]
[2023-11-29 04:31:27,094 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009712346] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:27,094 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:27,095 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:31:27,096 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26913179]
[2023-11-29 04:31:27,097 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:27,102 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:31:27,102 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:27,133 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:31:27,133 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:27,150 INFO  L87              Difference]: Start difference. First operand  has 6455 states, 6453 states have (on average 1.6703858670385867) internal successors, (10779), 6454 states have internal predecessors, (10779), 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 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:27,445 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:27,446 INFO  L93              Difference]: Finished difference Result 12678 states and 21174 transitions.
[2023-11-29 04:31:27,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:31:27,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 332
[2023-11-29 04:31:27,450 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:27,494 INFO  L225             Difference]: With dead ends: 12678
[2023-11-29 04:31:27,495 INFO  L226             Difference]: Without dead ends: 6455
[2023-11-29 04:31:27,507 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
[2023-11-29 04:31:27,510 INFO  L413           NwaCegarLoop]: 10772 mSDtfsCounter, 1 mSDsluCounter, 21539 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32311 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:27,511 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32311 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:27,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6455 states.
[2023-11-29 04:31:27,725 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 6455.
[2023-11-29 04:31:27,739 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6455 states, 6454 states have (on average 1.6698171676479703) internal successors, (10777), 6454 states have internal predecessors, (10777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:27,757 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6455 states to 6455 states and 10777 transitions.
[2023-11-29 04:31:27,758 INFO  L78                 Accepts]: Start accepts. Automaton has 6455 states and 10777 transitions. Word has length 332
[2023-11-29 04:31:27,760 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:27,760 INFO  L495      AbstractCegarLoop]: Abstraction has 6455 states and 10777 transitions.
[2023-11-29 04:31:27,761 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:27,761 INFO  L276                IsEmpty]: Start isEmpty. Operand 6455 states and 10777 transitions.
[2023-11-29 04:31:27,768 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 334
[2023-11-29 04:31:27,768 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:27,769 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]
[2023-11-29 04:31:27,769 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 04:31:27,769 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:27,770 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:27,770 INFO  L85        PathProgramCache]: Analyzing trace with hash -1132514581, now seen corresponding path program 1 times
[2023-11-29 04:31:27,770 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:27,770 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081928803]
[2023-11-29 04:31:27,771 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:27,771 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:27,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:28,330 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:31:28,331 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:28,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081928803]
[2023-11-29 04:31:28,331 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081928803] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:28,332 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:28,332 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:31:28,332 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126514601]
[2023-11-29 04:31:28,332 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:28,335 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:31:28,335 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:28,336 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:31:28,336 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:28,337 INFO  L87              Difference]: Start difference. First operand 6455 states and 10777 transitions. Second operand  has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:28,562 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:28,562 INFO  L93              Difference]: Finished difference Result 12681 states and 21172 transitions.
[2023-11-29 04:31:28,563 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:31:28,563 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 333
[2023-11-29 04:31:28,564 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:28,592 INFO  L225             Difference]: With dead ends: 12681
[2023-11-29 04:31:28,592 INFO  L226             Difference]: Without dead ends: 6458
[2023-11-29 04:31:28,599 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
[2023-11-29 04:31:28,600 INFO  L413           NwaCegarLoop]: 10772 mSDtfsCounter, 1 mSDsluCounter, 21537 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32309 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:28,601 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32309 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:28,613 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6458 states.
[2023-11-29 04:31:28,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6458 to 6457.
[2023-11-29 04:31:28,715 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6457 states, 6456 states have (on average 1.6696096654275092) internal successors, (10779), 6456 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:28,739 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6457 states to 6457 states and 10779 transitions.
[2023-11-29 04:31:28,740 INFO  L78                 Accepts]: Start accepts. Automaton has 6457 states and 10779 transitions. Word has length 333
[2023-11-29 04:31:28,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:28,741 INFO  L495      AbstractCegarLoop]: Abstraction has 6457 states and 10779 transitions.
[2023-11-29 04:31:28,741 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:28,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 6457 states and 10779 transitions.
[2023-11-29 04:31:28,746 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 335
[2023-11-29 04:31:28,746 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:28,746 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]
[2023-11-29 04:31:28,747 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 04:31:28,747 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:28,747 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:28,748 INFO  L85        PathProgramCache]: Analyzing trace with hash -958644141, now seen corresponding path program 1 times
[2023-11-29 04:31:28,748 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:28,748 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104570911]
[2023-11-29 04:31:28,749 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:28,749 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:28,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:29,717 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:31:29,717 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:29,717 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104570911]
[2023-11-29 04:31:29,718 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104570911] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:29,718 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:29,718 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:31:29,719 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772411631]
[2023-11-29 04:31:29,719 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:29,720 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 04:31:29,720 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:29,721 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 04:31:29,721 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:31:29,721 INFO  L87              Difference]: Start difference. First operand 6457 states and 10779 transitions. Second operand  has 5 states, 5 states have (on average 66.8) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:30,353 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:30,353 INFO  L93              Difference]: Finished difference Result 19152 states and 31975 transitions.
[2023-11-29 04:31:30,354 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 04:31:30,355 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 66.8) internal successors, (334), 4 states have internal predecessors, (334), 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 334
[2023-11-29 04:31:30,355 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:30,424 INFO  L225             Difference]: With dead ends: 19152
[2023-11-29 04:31:30,424 INFO  L226             Difference]: Without dead ends: 12927
[2023-11-29 04:31:30,434 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:31:30,436 INFO  L413           NwaCegarLoop]: 11189 mSDtfsCounter, 42013 mSDsluCounter, 21535 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42013 SdHoareTripleChecker+Valid, 32724 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:30,436 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [42013 Valid, 32724 Invalid, 21 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:30,458 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12927 states.
[2023-11-29 04:31:30,629 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12927 to 6714.
[2023-11-29 04:31:30,644 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6714 states, 6713 states have (on average 1.6692983762848206) internal successors, (11206), 6713 states have internal predecessors, (11206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:30,665 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 11206 transitions.
[2023-11-29 04:31:30,665 INFO  L78                 Accepts]: Start accepts. Automaton has 6714 states and 11206 transitions. Word has length 334
[2023-11-29 04:31:30,666 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:30,666 INFO  L495      AbstractCegarLoop]: Abstraction has 6714 states and 11206 transitions.
[2023-11-29 04:31:30,666 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 66.8) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:30,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 6714 states and 11206 transitions.
[2023-11-29 04:31:30,867 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4394
[2023-11-29 04:31:30,868 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:30,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 04:31:30,872 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 04:31:30,872 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:30,872 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:30,874 INFO  L85        PathProgramCache]: Analyzing trace with hash 1461506025, now seen corresponding path program 1 times
[2023-11-29 04:31:30,875 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:30,875 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931433251]
[2023-11-29 04:31:30,876 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:30,876 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:31,470 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:31:31,470 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772157907]
[2023-11-29 04:31:31,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:31,472 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:31,472 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:31,475 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:31:31,481 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 04:31:36,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:37,000 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19774 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 04:31:37,164 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:31:37,432 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:31:37,432 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:31:37,432 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:37,433 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931433251]
[2023-11-29 04:31:37,433 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:31:37,433 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772157907]
[2023-11-29 04:31:37,433 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772157907] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:37,433 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:37,435 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:31:37,435 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958246660]
[2023-11-29 04:31:37,436 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:37,443 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:31:37,443 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:37,450 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:31:37,451 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:37,454 INFO  L87              Difference]: Start difference. First operand 6714 states and 11206 transitions. Second operand  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:37,786 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:37,787 INFO  L93              Difference]: Finished difference Result 12949 states and 21615 transitions.
[2023-11-29 04:31:37,787 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:31:37,789 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 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 4393
[2023-11-29 04:31:37,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:37,806 INFO  L225             Difference]: With dead ends: 12949
[2023-11-29 04:31:37,807 INFO  L226             Difference]: Without dead ends: 6724
[2023-11-29 04:31:37,816 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4392 GetRequests, 4390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:37,818 INFO  L413           NwaCegarLoop]: 10772 mSDtfsCounter, 12 mSDsluCounter, 21534 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32306 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:37,818 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32306 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:37,835 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6724 states.
[2023-11-29 04:31:37,978 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6724 to 6716.
[2023-11-29 04:31:37,989 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6716 states, 6715 states have (on average 1.6690990320178705) internal successors, (11208), 6715 states have internal predecessors, (11208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:38,009 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6716 states to 6716 states and 11208 transitions.
[2023-11-29 04:31:38,010 INFO  L78                 Accepts]: Start accepts. Automaton has 6716 states and 11208 transitions. Word has length 4393
[2023-11-29 04:31:38,012 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:38,013 INFO  L495      AbstractCegarLoop]: Abstraction has 6716 states and 11208 transitions.
[2023-11-29 04:31:38,015 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:38,015 INFO  L276                IsEmpty]: Start isEmpty. Operand 6716 states and 11208 transitions.
[2023-11-29 04:31:38,281 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4394
[2023-11-29 04:31:38,282 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:38,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:31:38,351 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-29 04:31:38,486 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2023-11-29 04:31:38,486 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:38,488 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:38,490 INFO  L85        PathProgramCache]: Analyzing trace with hash 1738945371, now seen corresponding path program 1 times
[2023-11-29 04:31:38,490 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:38,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718831858]
[2023-11-29 04:31:38,491 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:38,491 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:38,906 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:31:38,907 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153430133]
[2023-11-29 04:31:38,908 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:38,908 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:38,908 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:38,909 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:31:38,910 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-29 04:31:43,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:43,607 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19775 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 04:31:43,677 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:31:43,813 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:31:43,813 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:31:43,813 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:43,814 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718831858]
[2023-11-29 04:31:43,814 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:31:43,814 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153430133]
[2023-11-29 04:31:43,814 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [153430133] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:43,814 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:43,816 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:31:43,816 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185275158]
[2023-11-29 04:31:43,816 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:43,822 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:31:43,822 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:43,827 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:31:43,827 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:43,829 INFO  L87              Difference]: Start difference. First operand 6716 states and 11208 transitions. Second operand  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:44,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:44,067 INFO  L93              Difference]: Finished difference Result 12952 states and 21617 transitions.
[2023-11-29 04:31:44,067 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:31:44,069 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 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 4393
[2023-11-29 04:31:44,071 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:44,086 INFO  L225             Difference]: With dead ends: 12952
[2023-11-29 04:31:44,086 INFO  L226             Difference]: Without dead ends: 6725
[2023-11-29 04:31:44,094 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4392 GetRequests, 4390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:44,095 INFO  L413           NwaCegarLoop]: 10772 mSDtfsCounter, 12 mSDsluCounter, 21534 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32306 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:44,096 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32306 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:44,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6725 states.
[2023-11-29 04:31:44,205 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6725 to 6717.
[2023-11-29 04:31:44,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6717 states, 6716 states have (on average 1.6689994044073853) internal successors, (11209), 6716 states have internal predecessors, (11209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:44,227 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 11209 transitions.
[2023-11-29 04:31:44,227 INFO  L78                 Accepts]: Start accepts. Automaton has 6717 states and 11209 transitions. Word has length 4393
[2023-11-29 04:31:44,229 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:44,229 INFO  L495      AbstractCegarLoop]: Abstraction has 6717 states and 11209 transitions.
[2023-11-29 04:31:44,231 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:44,231 INFO  L276                IsEmpty]: Start isEmpty. Operand 6717 states and 11209 transitions.
[2023-11-29 04:31:44,336 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4394
[2023-11-29 04:31:44,336 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:44,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:31:44,392 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-29 04:31:44,539 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:44,539 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:44,539 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:44,541 INFO  L85        PathProgramCache]: Analyzing trace with hash -1742491187, now seen corresponding path program 1 times
[2023-11-29 04:31:44,541 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:44,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285909936]
[2023-11-29 04:31:44,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:44,543 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:44,932 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:31:44,933 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354377839]
[2023-11-29 04:31:44,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:44,934 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:44,934 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:44,935 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:31:44,940 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-29 04:31:49,531 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:49,677 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19776 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 04:31:49,853 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:31:49,983 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:31:49,983 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:31:49,983 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:49,983 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285909936]
[2023-11-29 04:31:49,983 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:31:49,984 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354377839]
[2023-11-29 04:31:49,984 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [354377839] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:49,984 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:49,985 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:31:49,986 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983950803]
[2023-11-29 04:31:49,986 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:49,989 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:31:49,989 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:49,992 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:31:49,993 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:49,994 INFO  L87              Difference]: Start difference. First operand 6717 states and 11209 transitions. Second operand  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:50,186 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:50,186 INFO  L93              Difference]: Finished difference Result 12954 states and 21619 transitions.
[2023-11-29 04:31:50,187 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:31:50,188 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 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 4393
[2023-11-29 04:31:50,192 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:50,207 INFO  L225             Difference]: With dead ends: 12954
[2023-11-29 04:31:50,207 INFO  L226             Difference]: Without dead ends: 6726
[2023-11-29 04:31:50,216 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4392 GetRequests, 4390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:50,217 INFO  L413           NwaCegarLoop]: 10772 mSDtfsCounter, 12 mSDsluCounter, 21534 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32306 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:50,217 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32306 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 04:31:50,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6726 states.
[2023-11-29 04:31:50,318 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6718.
[2023-11-29 04:31:50,328 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6718 states, 6717 states have (on average 1.6688998064612177) internal successors, (11210), 6717 states have internal predecessors, (11210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:50,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 11210 transitions.
[2023-11-29 04:31:50,341 INFO  L78                 Accepts]: Start accepts. Automaton has 6718 states and 11210 transitions. Word has length 4393
[2023-11-29 04:31:50,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:50,345 INFO  L495      AbstractCegarLoop]: Abstraction has 6718 states and 11210 transitions.
[2023-11-29 04:31:50,347 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:50,347 INFO  L276                IsEmpty]: Start isEmpty. Operand 6718 states and 11210 transitions.
[2023-11-29 04:31:50,490 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4394
[2023-11-29 04:31:50,490 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:50,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:31:50,547 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-29 04:31:50,693 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:50,694 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:50,694 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:50,697 INFO  L85        PathProgramCache]: Analyzing trace with hash -75949925, now seen corresponding path program 1 times
[2023-11-29 04:31:50,697 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:50,697 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172667412]
[2023-11-29 04:31:50,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:50,698 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:51,089 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:31:51,089 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354027019]
[2023-11-29 04:31:51,090 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:51,090 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:51,090 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:51,091 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:31:51,092 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-29 04:31:55,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:31:55,470 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19777 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 04:31:55,536 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:31:55,682 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:31:55,683 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:31:55,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:31:55,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172667412]
[2023-11-29 04:31:55,683 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:31:55,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354027019]
[2023-11-29 04:31:55,683 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [354027019] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:31:55,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:31:55,685 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:31:55,685 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930681076]
[2023-11-29 04:31:55,685 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:31:55,690 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:31:55,690 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:31:55,695 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:31:55,695 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:55,697 INFO  L87              Difference]: Start difference. First operand 6718 states and 11210 transitions. Second operand  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:55,900 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:31:55,900 INFO  L93              Difference]: Finished difference Result 12956 states and 21621 transitions.
[2023-11-29 04:31:55,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:31:55,902 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 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 4393
[2023-11-29 04:31:55,905 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:31:55,918 INFO  L225             Difference]: With dead ends: 12956
[2023-11-29 04:31:55,918 INFO  L226             Difference]: Without dead ends: 6727
[2023-11-29 04:31:55,927 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4392 GetRequests, 4390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:31:55,928 INFO  L413           NwaCegarLoop]: 10772 mSDtfsCounter, 12 mSDsluCounter, 21534 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32306 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:31:55,928 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32306 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:31:55,940 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6727 states.
[2023-11-29 04:31:56,092 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6727 to 6719.
[2023-11-29 04:31:56,101 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6719 states, 6718 states have (on average 1.6688002381661209) internal successors, (11211), 6718 states have internal predecessors, (11211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:56,113 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6719 states to 6719 states and 11211 transitions.
[2023-11-29 04:31:56,113 INFO  L78                 Accepts]: Start accepts. Automaton has 6719 states and 11211 transitions. Word has length 4393
[2023-11-29 04:31:56,116 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:31:56,116 INFO  L495      AbstractCegarLoop]: Abstraction has 6719 states and 11211 transitions.
[2023-11-29 04:31:56,117 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:31:56,118 INFO  L276                IsEmpty]: Start isEmpty. Operand 6719 states and 11211 transitions.
[2023-11-29 04:31:56,236 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4394
[2023-11-29 04:31:56,236 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:31:56,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:31:56,303 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-29 04:31:56,441 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:56,441 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:31:56,441 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:31:56,443 INFO  L85        PathProgramCache]: Analyzing trace with hash 388112745, now seen corresponding path program 1 times
[2023-11-29 04:31:56,443 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:31:56,443 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467417788]
[2023-11-29 04:31:56,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:56,444 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:31:56,880 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:31:56,880 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669288336]
[2023-11-29 04:31:56,881 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:31:56,881 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:31:56,882 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:31:56,883 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:31:56,884 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-29 04:32:01,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:01,504 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19778 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-29 04:32:01,584 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:01,689 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:32:01,689 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:01,689 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:01,690 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467417788]
[2023-11-29 04:32:01,690 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:01,690 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669288336]
[2023-11-29 04:32:01,690 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669288336] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:01,690 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:01,692 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 04:32:01,692 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120227037]
[2023-11-29 04:32:01,692 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:01,697 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:32:01,697 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:01,700 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:32:01,701 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:32:01,702 INFO  L87              Difference]: Start difference. First operand 6719 states and 11211 transitions. Second operand  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:01,863 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:32:01,863 INFO  L93              Difference]: Finished difference Result 12958 states and 21623 transitions.
[2023-11-29 04:32:01,864 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:32:01,865 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 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 4393
[2023-11-29 04:32:01,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:32:01,877 INFO  L225             Difference]: With dead ends: 12958
[2023-11-29 04:32:01,877 INFO  L226             Difference]: Without dead ends: 6728
[2023-11-29 04:32:01,884 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4392 GetRequests, 4390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:32:01,885 INFO  L413           NwaCegarLoop]: 10772 mSDtfsCounter, 12 mSDsluCounter, 21534 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32306 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 04:32:01,886 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32306 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 04:32:01,894 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6728 states.
[2023-11-29 04:32:01,957 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6728 to 6720.
[2023-11-29 04:32:01,965 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.6687006995088556) internal successors, (11212), 6719 states have internal predecessors, (11212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:01,974 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11212 transitions.
[2023-11-29 04:32:01,974 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11212 transitions. Word has length 4393
[2023-11-29 04:32:01,976 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:32:01,977 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11212 transitions.
[2023-11-29 04:32:01,978 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 4 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:01,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11212 transitions.
[2023-11-29 04:32:02,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4394
[2023-11-29 04:32:02,067 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:32:02,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:32:02,126 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-29 04:32:02,270 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:02,271 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:32:02,271 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:32:02,273 INFO  L85        PathProgramCache]: Analyzing trace with hash -196237513, now seen corresponding path program 1 times
[2023-11-29 04:32:02,273 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:32:02,273 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12955148]
[2023-11-29 04:32:02,274 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:02,274 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:32:02,652 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:32:02,652 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349122064]
[2023-11-29 04:32:02,653 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:02,654 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:02,654 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:32:02,655 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:32:02,656 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-29 04:32:07,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:07,259 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19779 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:32:07,361 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:09,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:32:09,829 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:09,829 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:09,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12955148]
[2023-11-29 04:32:09,830 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:09,830 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349122064]
[2023-11-29 04:32:09,830 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [349122064] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:09,830 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:09,832 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:32:09,832 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915558186]
[2023-11-29 04:32:09,832 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:09,837 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:32:09,837 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:09,841 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:32:09,842 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:32:09,843 INFO  L87              Difference]: Start difference. First operand 6720 states and 11212 transitions. Second operand  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 3 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:13,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:32:13,899 INFO  L93              Difference]: Finished difference Result 13611 states and 22719 transitions.
[2023-11-29 04:32:13,899 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:32:13,900 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 3 states have internal predecessors, (4393), 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 4393
[2023-11-29 04:32:13,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:32:13,912 INFO  L225             Difference]: With dead ends: 13611
[2023-11-29 04:32:13,912 INFO  L226             Difference]: Without dead ends: 7380
[2023-11-29 04:32:13,919 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4393 GetRequests, 4390 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:32:13,920 INFO  L413           NwaCegarLoop]: 9603 mSDtfsCounter, 20438 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 3513 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20438 SdHoareTripleChecker+Valid, 10710 SdHoareTripleChecker+Invalid, 3513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:32:13,920 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20438 Valid, 10710 Invalid, 3513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3513 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-11-29 04:32:13,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7380 states.
[2023-11-29 04:32:14,056 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 6720.
[2023-11-29 04:32:14,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.6685518678374758) internal successors, (11211), 6719 states have internal predecessors, (11211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:14,081 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11211 transitions.
[2023-11-29 04:32:14,082 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11211 transitions. Word has length 4393
[2023-11-29 04:32:14,084 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:32:14,084 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11211 transitions.
[2023-11-29 04:32:14,086 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1098.25) internal successors, (4393), 3 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:14,086 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11211 transitions.
[2023-11-29 04:32:14,315 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4395
[2023-11-29 04:32:14,315 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:32:14,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:32:14,373 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-29 04:32:14,518 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:14,519 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:32:14,520 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:32:14,523 INFO  L85        PathProgramCache]: Analyzing trace with hash 1701018245, now seen corresponding path program 1 times
[2023-11-29 04:32:14,523 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:32:14,523 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681689739]
[2023-11-29 04:32:14,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:14,524 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:32:15,043 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:32:15,043 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220611907]
[2023-11-29 04:32:15,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:15,044 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:15,045 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:32:15,046 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:32:15,049 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-29 04:32:19,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:19,823 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19780 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:32:19,886 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:21,843 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:32:21,844 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:21,844 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:21,844 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681689739]
[2023-11-29 04:32:21,844 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:21,844 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220611907]
[2023-11-29 04:32:21,844 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [220611907] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:21,844 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:21,846 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:32:21,846 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260818695]
[2023-11-29 04:32:21,846 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:21,851 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:32:21,851 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:21,854 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:32:21,854 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:32:21,856 INFO  L87              Difference]: Start difference. First operand 6720 states and 11211 transitions. Second operand  has 4 states, 4 states have (on average 1098.5) internal successors, (4394), 3 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:25,741 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:32:25,741 INFO  L93              Difference]: Finished difference Result 13618 states and 22728 transitions.
[2023-11-29 04:32:25,742 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:32:25,744 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1098.5) internal successors, (4394), 3 states have internal predecessors, (4394), 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 4394
[2023-11-29 04:32:25,745 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:32:25,754 INFO  L225             Difference]: With dead ends: 13618
[2023-11-29 04:32:25,755 INFO  L226             Difference]: Without dead ends: 7387
[2023-11-29 04:32:25,760 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4394 GetRequests, 4391 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:32:25,761 INFO  L413           NwaCegarLoop]: 9612 mSDtfsCounter, 20431 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 3515 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20431 SdHoareTripleChecker+Valid, 10729 SdHoareTripleChecker+Invalid, 3515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2023-11-29 04:32:25,761 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20431 Valid, 10729 Invalid, 3515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3515 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2023-11-29 04:32:25,770 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7387 states.
[2023-11-29 04:32:25,835 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 6720.
[2023-11-29 04:32:25,841 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.6684030361660962) internal successors, (11210), 6719 states have internal predecessors, (11210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:25,851 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11210 transitions.
[2023-11-29 04:32:25,851 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11210 transitions. Word has length 4394
[2023-11-29 04:32:25,852 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:32:25,852 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11210 transitions.
[2023-11-29 04:32:25,853 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1098.5) internal successors, (4394), 3 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:25,854 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11210 transitions.
[2023-11-29 04:32:25,946 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4396
[2023-11-29 04:32:25,946 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:32:25,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:32:26,015 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-29 04:32:26,149 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:26,150 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:32:26,150 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:32:26,151 INFO  L85        PathProgramCache]: Analyzing trace with hash -927323960, now seen corresponding path program 1 times
[2023-11-29 04:32:26,152 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:32:26,152 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089395249]
[2023-11-29 04:32:26,152 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:26,152 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:32:26,559 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:32:26,559 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416674785]
[2023-11-29 04:32:26,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:26,561 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:26,561 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:32:26,562 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:32:26,563 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-29 04:32:30,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:30,981 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19781 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:32:31,036 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:33,466 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:32:33,466 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:33,466 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:33,466 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089395249]
[2023-11-29 04:32:33,466 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:33,466 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416674785]
[2023-11-29 04:32:33,466 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416674785] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:33,466 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:33,468 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:32:33,468 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318946459]
[2023-11-29 04:32:33,468 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:33,471 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:32:33,471 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:33,474 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:32:33,475 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:32:33,475 INFO  L87              Difference]: Start difference. First operand 6720 states and 11210 transitions. Second operand  has 4 states, 4 states have (on average 1098.75) internal successors, (4395), 3 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:37,287 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:32:37,287 INFO  L93              Difference]: Finished difference Result 13622 states and 22732 transitions.
[2023-11-29 04:32:37,288 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:32:37,289 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1098.75) internal successors, (4395), 3 states have internal predecessors, (4395), 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 4395
[2023-11-29 04:32:37,289 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:32:37,295 INFO  L225             Difference]: With dead ends: 13622
[2023-11-29 04:32:37,295 INFO  L226             Difference]: Without dead ends: 7391
[2023-11-29 04:32:37,299 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4395 GetRequests, 4392 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:32:37,299 INFO  L413           NwaCegarLoop]: 9616 mSDtfsCounter, 20426 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 3517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20426 SdHoareTripleChecker+Valid, 10738 SdHoareTripleChecker+Invalid, 3517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-11-29 04:32:37,300 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20426 Valid, 10738 Invalid, 3517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3517 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-11-29 04:32:37,307 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7391 states.
[2023-11-29 04:32:37,364 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 6720.
[2023-11-29 04:32:37,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.6682542044947164) internal successors, (11209), 6719 states have internal predecessors, (11209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:37,379 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11209 transitions.
[2023-11-29 04:32:37,379 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11209 transitions. Word has length 4395
[2023-11-29 04:32:37,381 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:32:37,381 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11209 transitions.
[2023-11-29 04:32:37,382 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1098.75) internal successors, (4395), 3 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:37,382 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11209 transitions.
[2023-11-29 04:32:37,474 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4397
[2023-11-29 04:32:37,474 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:32:37,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:32:37,537 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-11-29 04:32:37,681 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-29 04:32:37,681 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:32:37,681 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:32:37,684 INFO  L85        PathProgramCache]: Analyzing trace with hash 2142805328, now seen corresponding path program 1 times
[2023-11-29 04:32:37,684 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:32:37,684 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885848484]
[2023-11-29 04:32:37,685 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:37,685 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:32:38,020 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:32:38,020 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156554082]
[2023-11-29 04:32:38,021 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:38,022 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:38,022 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:32:38,023 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:32:38,024 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-11-29 04:32:42,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:42,596 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19782 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:32:42,649 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:44,673 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:32:44,673 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:44,674 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:44,674 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885848484]
[2023-11-29 04:32:44,674 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:44,674 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156554082]
[2023-11-29 04:32:44,674 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156554082] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:44,674 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:44,675 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:32:44,675 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129371364]
[2023-11-29 04:32:44,675 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:44,678 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:32:44,678 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:44,682 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:32:44,682 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:32:44,683 INFO  L87              Difference]: Start difference. First operand 6720 states and 11209 transitions. Second operand  has 4 states, 4 states have (on average 1099.0) internal successors, (4396), 3 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:49,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:32:49,083 INFO  L93              Difference]: Finished difference Result 13629 states and 22741 transitions.
[2023-11-29 04:32:49,084 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:32:49,085 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1099.0) internal successors, (4396), 3 states have internal predecessors, (4396), 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 4396
[2023-11-29 04:32:49,085 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:32:49,091 INFO  L225             Difference]: With dead ends: 13629
[2023-11-29 04:32:49,091 INFO  L226             Difference]: Without dead ends: 7398
[2023-11-29 04:32:49,095 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4396 GetRequests, 4393 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:32:49,095 INFO  L413           NwaCegarLoop]: 9625 mSDtfsCounter, 20419 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 3519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20419 SdHoareTripleChecker+Valid, 10757 SdHoareTripleChecker+Invalid, 3519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2023-11-29 04:32:49,096 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20419 Valid, 10757 Invalid, 3519 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3519 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2023-11-29 04:32:49,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7398 states.
[2023-11-29 04:32:49,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 6720.
[2023-11-29 04:32:49,171 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.6681053728233368) internal successors, (11208), 6719 states have internal predecessors, (11208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:49,182 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11208 transitions.
[2023-11-29 04:32:49,183 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11208 transitions. Word has length 4396
[2023-11-29 04:32:49,184 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:32:49,185 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11208 transitions.
[2023-11-29 04:32:49,186 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1099.0) internal successors, (4396), 3 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:32:49,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11208 transitions.
[2023-11-29 04:32:49,273 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4398
[2023-11-29 04:32:49,274 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:32:49,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:32:49,332 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-11-29 04:32:49,481 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-29 04:32:49,481 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:32:49,481 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:32:49,484 INFO  L85        PathProgramCache]: Analyzing trace with hash 811156057, now seen corresponding path program 1 times
[2023-11-29 04:32:49,484 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:32:49,484 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699044368]
[2023-11-29 04:32:49,485 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:49,486 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:32:49,819 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:32:49,819 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030025269]
[2023-11-29 04:32:49,820 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:32:49,821 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:32:49,821 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:32:49,822 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:32:49,824 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-11-29 04:32:54,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:32:54,278 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19783 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:32:54,332 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:32:57,137 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:32:57,137 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:32:57,137 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:32:57,137 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699044368]
[2023-11-29 04:32:57,137 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:32:57,137 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030025269]
[2023-11-29 04:32:57,137 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030025269] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:32:57,137 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:32:57,139 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:32:57,139 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167951390]
[2023-11-29 04:32:57,139 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:32:57,142 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:32:57,142 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:32:57,145 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:32:57,145 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:32:57,146 INFO  L87              Difference]: Start difference. First operand 6720 states and 11208 transitions. Second operand  has 4 states, 4 states have (on average 1099.25) internal successors, (4397), 3 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:01,077 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:33:01,077 INFO  L93              Difference]: Finished difference Result 13633 states and 22745 transitions.
[2023-11-29 04:33:01,077 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:33:01,078 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1099.25) internal successors, (4397), 3 states have internal predecessors, (4397), 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 4397
[2023-11-29 04:33:01,079 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:33:01,084 INFO  L225             Difference]: With dead ends: 13633
[2023-11-29 04:33:01,085 INFO  L226             Difference]: Without dead ends: 7402
[2023-11-29 04:33:01,088 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4397 GetRequests, 4394 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:33:01,089 INFO  L413           NwaCegarLoop]: 9629 mSDtfsCounter, 20414 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 3521 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20414 SdHoareTripleChecker+Valid, 10766 SdHoareTripleChecker+Invalid, 3521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:33:01,089 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20414 Valid, 10766 Invalid, 3521 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3521 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-11-29 04:33:01,097 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7402 states.
[2023-11-29 04:33:01,145 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7402 to 6720.
[2023-11-29 04:33:01,151 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.6679565411519572) internal successors, (11207), 6719 states have internal predecessors, (11207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:01,159 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11207 transitions.
[2023-11-29 04:33:01,159 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11207 transitions. Word has length 4397
[2023-11-29 04:33:01,160 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:33:01,160 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11207 transitions.
[2023-11-29 04:33:01,161 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1099.25) internal successors, (4397), 3 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:01,162 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11207 transitions.
[2023-11-29 04:33:01,239 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4399
[2023-11-29 04:33:01,240 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:33:01,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:33:01,300 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-11-29 04:33:01,442 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-29 04:33:01,442 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:33:01,443 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:33:01,445 INFO  L85        PathProgramCache]: Analyzing trace with hash -1026587365, now seen corresponding path program 1 times
[2023-11-29 04:33:01,445 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:33:01,445 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217394316]
[2023-11-29 04:33:01,446 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:01,446 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:33:01,774 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:33:01,774 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794238881]
[2023-11-29 04:33:01,775 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:01,775 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:33:01,776 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:33:01,776 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:33:01,777 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-11-29 04:33:06,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:33:06,531 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19784 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:33:06,583 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:33:08,472 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:33:08,473 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:33:08,473 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:33:08,473 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217394316]
[2023-11-29 04:33:08,473 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:33:08,473 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794238881]
[2023-11-29 04:33:08,473 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [794238881] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:33:08,473 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:33:08,475 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:33:08,475 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270566176]
[2023-11-29 04:33:08,475 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:33:08,479 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:33:08,479 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:33:08,482 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:33:08,482 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:33:08,483 INFO  L87              Difference]: Start difference. First operand 6720 states and 11207 transitions. Second operand  has 4 states, 4 states have (on average 1099.5) internal successors, (4398), 3 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:12,409 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:33:12,409 INFO  L93              Difference]: Finished difference Result 13640 states and 22754 transitions.
[2023-11-29 04:33:12,410 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:33:12,410 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1099.5) internal successors, (4398), 3 states have internal predecessors, (4398), 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 4398
[2023-11-29 04:33:12,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:33:12,417 INFO  L225             Difference]: With dead ends: 13640
[2023-11-29 04:33:12,417 INFO  L226             Difference]: Without dead ends: 7409
[2023-11-29 04:33:12,420 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4398 GetRequests, 4395 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:33:12,421 INFO  L413           NwaCegarLoop]: 9638 mSDtfsCounter, 20407 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 3523 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20407 SdHoareTripleChecker+Valid, 10785 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-11-29 04:33:12,421 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20407 Valid, 10785 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3523 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-11-29 04:33:12,429 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7409 states.
[2023-11-29 04:33:12,473 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7409 to 6720.
[2023-11-29 04:33:12,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.6678077094805774) internal successors, (11206), 6719 states have internal predecessors, (11206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:12,485 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11206 transitions.
[2023-11-29 04:33:12,485 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11206 transitions. Word has length 4398
[2023-11-29 04:33:12,487 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:33:12,487 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11206 transitions.
[2023-11-29 04:33:12,488 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1099.5) internal successors, (4398), 3 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:12,488 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11206 transitions.
[2023-11-29 04:33:12,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4400
[2023-11-29 04:33:12,564 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:33:12,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:33:12,611 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-11-29 04:33:12,766 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-29 04:33:12,766 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:33:12,766 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:33:12,768 INFO  L85        PathProgramCache]: Analyzing trace with hash -1377557526, now seen corresponding path program 1 times
[2023-11-29 04:33:12,768 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:33:12,768 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462359248]
[2023-11-29 04:33:12,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:12,768 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:33:13,096 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:33:13,096 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952943196]
[2023-11-29 04:33:13,097 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:13,097 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:33:13,097 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:33:13,098 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:33:13,099 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-11-29 04:33:17,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:33:17,475 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19785 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:33:17,528 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:33:20,217 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:33:20,217 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:33:20,218 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:33:20,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462359248]
[2023-11-29 04:33:20,218 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:33:20,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952943196]
[2023-11-29 04:33:20,218 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [952943196] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:33:20,218 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:33:20,220 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:33:20,220 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22292356]
[2023-11-29 04:33:20,220 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:33:20,224 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:33:20,224 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:33:20,229 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:33:20,229 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:33:20,230 INFO  L87              Difference]: Start difference. First operand 6720 states and 11206 transitions. Second operand  has 4 states, 4 states have (on average 1099.75) internal successors, (4399), 3 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:24,491 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:33:24,491 INFO  L93              Difference]: Finished difference Result 13644 states and 22758 transitions.
[2023-11-29 04:33:24,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:33:24,492 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1099.75) internal successors, (4399), 3 states have internal predecessors, (4399), 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 4399
[2023-11-29 04:33:24,494 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:33:24,500 INFO  L225             Difference]: With dead ends: 13644
[2023-11-29 04:33:24,500 INFO  L226             Difference]: Without dead ends: 7413
[2023-11-29 04:33:24,503 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4399 GetRequests, 4396 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:33:24,504 INFO  L413           NwaCegarLoop]: 9642 mSDtfsCounter, 20402 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 3525 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20402 SdHoareTripleChecker+Valid, 10794 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:33:24,504 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20402 Valid, 10794 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3525 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2023-11-29 04:33:24,512 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7413 states.
[2023-11-29 04:33:24,558 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 6720.
[2023-11-29 04:33:24,564 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.6676588778091979) internal successors, (11205), 6719 states have internal predecessors, (11205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:24,571 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11205 transitions.
[2023-11-29 04:33:24,571 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11205 transitions. Word has length 4399
[2023-11-29 04:33:24,572 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:33:24,572 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11205 transitions.
[2023-11-29 04:33:24,573 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1099.75) internal successors, (4399), 3 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:24,573 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11205 transitions.
[2023-11-29 04:33:24,649 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4401
[2023-11-29 04:33:24,649 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:33:24,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:33:24,696 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-11-29 04:33:24,851 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-29 04:33:24,851 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:33:24,852 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:33:24,853 INFO  L85        PathProgramCache]: Analyzing trace with hash -1164000794, now seen corresponding path program 1 times
[2023-11-29 04:33:24,853 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:33:24,853 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073368816]
[2023-11-29 04:33:24,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:24,854 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:33:25,178 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:33:25,178 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601712864]
[2023-11-29 04:33:25,179 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:25,179 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:33:25,179 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:33:25,180 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:33:25,183 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-11-29 04:33:29,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:33:29,540 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19786 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-29 04:33:29,593 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:33:31,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:33:31,596 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:33:31,596 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:33:31,596 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073368816]
[2023-11-29 04:33:31,596 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:33:31,596 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601712864]
[2023-11-29 04:33:31,596 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [601712864] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:33:31,596 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:33:31,597 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:33:31,597 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851428061]
[2023-11-29 04:33:31,597 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:33:31,600 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:33:31,600 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:33:31,603 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:33:31,603 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:33:31,604 INFO  L87              Difference]: Start difference. First operand 6720 states and 11205 transitions. Second operand  has 4 states, 4 states have (on average 1100.0) internal successors, (4400), 3 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:35,483 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:33:35,483 INFO  L93              Difference]: Finished difference Result 13651 states and 22767 transitions.
[2023-11-29 04:33:35,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:33:35,485 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1100.0) internal successors, (4400), 3 states have internal predecessors, (4400), 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 4400
[2023-11-29 04:33:35,486 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:33:35,492 INFO  L225             Difference]: With dead ends: 13651
[2023-11-29 04:33:35,492 INFO  L226             Difference]: Without dead ends: 7420
[2023-11-29 04:33:35,496 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4400 GetRequests, 4397 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:33:35,496 INFO  L413           NwaCegarLoop]: 9651 mSDtfsCounter, 20395 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 3527 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20395 SdHoareTripleChecker+Valid, 10813 SdHoareTripleChecker+Invalid, 3527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2023-11-29 04:33:35,496 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20395 Valid, 10813 Invalid, 3527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3527 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2023-11-29 04:33:35,505 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7420 states.
[2023-11-29 04:33:35,557 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 6720.
[2023-11-29 04:33:35,563 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.667510046137818) internal successors, (11204), 6719 states have internal predecessors, (11204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:35,570 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11204 transitions.
[2023-11-29 04:33:35,570 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11204 transitions. Word has length 4400
[2023-11-29 04:33:35,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:33:35,571 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11204 transitions.
[2023-11-29 04:33:35,572 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1100.0) internal successors, (4400), 3 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:35,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11204 transitions.
[2023-11-29 04:33:35,650 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4402
[2023-11-29 04:33:35,650 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:33:35,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:33:35,700 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-11-29 04:33:35,853 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-29 04:33:35,853 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:33:35,854 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:33:35,855 INFO  L85        PathProgramCache]: Analyzing trace with hash -1247019653, now seen corresponding path program 1 times
[2023-11-29 04:33:35,855 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:33:35,855 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639562818]
[2023-11-29 04:33:35,856 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:35,856 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:33:36,180 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:33:36,180 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494671278]
[2023-11-29 04:33:36,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:36,181 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:33:36,181 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:33:36,182 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:33:36,183 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-11-29 04:33:40,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:33:40,505 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19787 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-29 04:33:40,571 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:33:40,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked.
[2023-11-29 04:33:40,820 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:33:40,820 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:33:40,820 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639562818]
[2023-11-29 04:33:40,820 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:33:40,820 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494671278]
[2023-11-29 04:33:40,820 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [494671278] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:33:40,820 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:33:40,822 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-29 04:33:40,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315944531]
[2023-11-29 04:33:40,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:33:40,825 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:33:40,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:33:40,828 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:33:40,829 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:33:40,830 INFO  L87              Difference]: Start difference. First operand 6720 states and 11204 transitions. Second operand  has 8 states, 8 states have (on average 529.0) internal successors, (4232), 8 states have internal predecessors, (4232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:41,278 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:33:41,278 INFO  L93              Difference]: Finished difference Result 19175 states and 31974 transitions.
[2023-11-29 04:33:41,278 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-29 04:33:41,279 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 529.0) internal successors, (4232), 8 states have internal predecessors, (4232), 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 4401
[2023-11-29 04:33:41,283 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:33:41,293 INFO  L225             Difference]: With dead ends: 19175
[2023-11-29 04:33:41,293 INFO  L226             Difference]: Without dead ends: 12944
[2023-11-29 04:33:41,299 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4409 GetRequests, 4397 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-11-29 04:33:41,300 INFO  L413           NwaCegarLoop]: 11182 mSDtfsCounter, 30933 mSDsluCounter, 54654 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30933 SdHoareTripleChecker+Valid, 65836 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:33:41,300 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30933 Valid, 65836 Invalid, 51 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 04:33:41,315 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12944 states.
[2023-11-29 04:33:41,385 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12944 to 6720.
[2023-11-29 04:33:41,390 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6720 states, 6719 states have (on average 1.667510046137818) internal successors, (11204), 6719 states have internal predecessors, (11204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:41,397 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 11204 transitions.
[2023-11-29 04:33:41,398 INFO  L78                 Accepts]: Start accepts. Automaton has 6720 states and 11204 transitions. Word has length 4401
[2023-11-29 04:33:41,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:33:41,401 INFO  L495      AbstractCegarLoop]: Abstraction has 6720 states and 11204 transitions.
[2023-11-29 04:33:41,402 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 529.0) internal successors, (4232), 8 states have internal predecessors, (4232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:33:41,402 INFO  L276                IsEmpty]: Start isEmpty. Operand 6720 states and 11204 transitions.
[2023-11-29 04:33:41,480 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4403
[2023-11-29 04:33:41,481 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:33:41,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 04:33:41,534 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-11-29 04:33:41,682 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-29 04:33:41,682 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:33:41,683 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:33:41,683 INFO  L85        PathProgramCache]: Analyzing trace with hash 1203978151, now seen corresponding path program 1 times
[2023-11-29 04:33:41,684 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 04:33:41,684 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43310111]
[2023-11-29 04:33:41,685 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:41,685 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 04:33:42,034 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-29 04:33:42,035 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691491654]
[2023-11-29 04:33:42,035 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:33:42,036 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 04:33:42,036 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:33:42,036 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 04:33:42,038 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-11-29 04:33:46,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:33:46,546 INFO  L262         TraceCheckSpWp]: Trace formula consists of 19791 conjuncts, 170 conjunts are in the unsatisfiable core
[2023-11-29 04:33:46,608 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:34:15,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 6 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:34:15,291 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 04:35:10,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 24 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:35:10,178 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 04:35:10,178 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43310111]
[2023-11-29 04:35:10,178 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-29 04:35:10,178 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691491654]
[2023-11-29 04:35:10,178 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [691491654] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 04:35:10,178 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-29 04:35:10,181 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 37] total 101
[2023-11-29 04:35:10,181 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035674041]
[2023-11-29 04:35:10,181 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-29 04:35:10,186 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 101 states
[2023-11-29 04:35:10,186 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 04:35:10,193 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants.
[2023-11-29 04:35:10,195 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=859, Invalid=9241, Unknown=0, NotChecked=0, Total=10100
[2023-11-29 04:35:10,198 INFO  L87              Difference]: Start difference. First operand 6720 states and 11204 transitions. Second operand  has 101 states, 101 states have (on average 87.05940594059406) internal successors, (8793), 101 states have internal predecessors, (8793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:01,128 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101
[2023-11-29 04:42:01,128 WARN  L249               Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory")

[2023-11-29 04:42:01,129 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1085 states. 
[2023-11-29 04:42:01,193 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9887 GetRequests, 8705 SyntacticMatches, 0 SemanticMatches, 1181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583974 ImplicationChecksByTransitivity, 324.0s TimeCoverageRelationStatistics Valid=146888, Invalid=1251418, Unknown=0, NotChecked=0, Total=1398306
[2023-11-29 04:42:01,194 INFO  L413           NwaCegarLoop]: 10375 mSDtfsCounter, 623362 mSDsluCounter, 614705 mSDsCounter, 0 mSdLazyCounter, 83538 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623362 SdHoareTripleChecker+Valid, 625080 SdHoareTripleChecker+Invalid, 83701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.8s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 83538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.1s IncrementalHoareTripleChecker+Time
[2023-11-29 04:42:01,194 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [623362 Valid, 625080 Invalid, 83701 Unknown, 0 Unchecked, 2.8s Time], IncrementalHoareTripleChecker [163 Valid, 83538 Invalid, 0 Unknown, 0 Unchecked, 63.1s Time]
[2023-11-29 04:42:01,253 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-11-29 04:42:01,395 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-11-29 04:42:01,395 FATAL L?                        ?]: An unrecoverable error occured during an interaction with an SMT solver:
de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")

	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281)
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155)
	at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163)
	at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163)
	at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.<init>(PredicateUnifier.java:789)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.<init>(NestedWordAutomatonReachableStates.java:960)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.<init>(NestedWordAutomatonReachableStates.java:182)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137)
	at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.<init>(Difference.java:90)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518)
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701)
	at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383)
	at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258)
	... 47 more
[2023-11-29 04:42:01,398 INFO  L158              Benchmark]: Toolchain (without parser) took 658290.20ms. Allocated memory was 163.6MB in the beginning and 6.4GB in the end (delta: 6.3GB). Free memory was 120.2MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB.
[2023-11-29 04:42:01,398 INFO  L158              Benchmark]: CDTParser took 0.19ms. Allocated memory is still 123.7MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-29 04:42:01,399 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1663.37ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 120.2MB in the beginning and 67.8MB in the end (delta: 52.3MB). Peak memory consumption was 175.0MB. Max. memory is 16.1GB.
[2023-11-29 04:42:01,399 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2274.25ms. Allocated memory was 218.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 67.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 391.1MB. Max. memory is 16.1GB.
[2023-11-29 04:42:01,399 INFO  L158              Benchmark]: Boogie Preprocessor took 2061.73ms. Allocated memory is still 1.9GB. Free memory was 1.5GB in the beginning and 1.3GB in the end (delta: 180.4MB). Peak memory consumption was 242.2MB. Max. memory is 16.1GB.
[2023-11-29 04:42:01,399 INFO  L158              Benchmark]: RCFGBuilder took 15887.06ms. Allocated memory was 1.9GB in the beginning and 5.8GB in the end (delta: 3.9GB). Free memory was 1.3GB in the beginning and 4.4GB in the end (delta: -3.1GB). Peak memory consumption was 756.2MB. Max. memory is 16.1GB.
[2023-11-29 04:42:01,400 INFO  L158              Benchmark]: TraceAbstraction took 636396.42ms. Allocated memory was 5.8GB in the beginning and 6.4GB in the end (delta: 627.0MB). Free memory was 4.4GB in the beginning and 2.2GB in the end (delta: 2.2GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB.
[2023-11-29 04:42:01,401 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19ms. Allocated memory is still 123.7MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 1663.37ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 120.2MB in the beginning and 67.8MB in the end (delta: 52.3MB). Peak memory consumption was 175.0MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 2274.25ms. Allocated memory was 218.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 67.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 391.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 2061.73ms. Allocated memory is still 1.9GB. Free memory was 1.5GB in the beginning and 1.3GB in the end (delta: 180.4MB). Peak memory consumption was 242.2MB. Max. memory is 16.1GB.
 * RCFGBuilder took 15887.06ms. Allocated memory was 1.9GB in the beginning and 5.8GB in the end (delta: 3.9GB). Free memory was 1.3GB in the beginning and 4.4GB in the end (delta: -3.1GB). Peak memory consumption was 756.2MB. Max. memory is 16.1GB.
 * TraceAbstraction took 636396.42ms. Allocated memory was 5.8GB in the beginning and 6.4GB in the end (delta: 627.0MB). Free memory was 4.4GB in the beginning and 2.2GB in the end (delta: 2.2GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")

    de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis

### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e77897bf0c0355da39ab9d60964373b1d092435579efbe2948ef80a499f9d265
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 04:42:03,401 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 04:42:03,468 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2023-11-29 04:42:03,481 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 04:42:03,482 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 04:42:03,509 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 04:42:03,510 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 04:42:03,511 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 04:42:03,511 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 04:42:03,512 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 04:42:03,513 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 04:42:03,513 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 04:42:03,514 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 04:42:03,515 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 04:42:03,515 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 04:42:03,516 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 04:42:03,517 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 04:42:03,517 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 04:42:03,517 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 04:42:03,518 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 04:42:03,518 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 04:42:03,519 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-11-29 04:42:03,519 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-11-29 04:42:03,520 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-29 04:42:03,520 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 04:42:03,520 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 04:42:03,521 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 04:42:03,521 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 04:42:03,521 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 04:42:03,522 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 04:42:03,522 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:42:03,523 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 04:42:03,523 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 04:42:03,523 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 04:42:03,524 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-11-29 04:42:03,524 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2023-11-29 04:42:03,524 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 04:42:03,524 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 04:42:03,524 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 04:42:03,525 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 04:42:03,525 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 04:42:03,525 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-11-29 04:42:03,525 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_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e77897bf0c0355da39ab9d60964373b1d092435579efbe2948ef80a499f9d265
[2023-11-29 04:42:03,788 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 04:42:03,808 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 04:42:03,811 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 04:42:03,812 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 04:42:03,812 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 04:42:03,813 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c
[2023-11-29 04:42:06,523 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 04:42:06,963 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 04:42:06,964 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c
[2023-11-29 04:42:06,992 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/data/162d1cc42/5a8a3dade083470284556ce533e4bee5/FLAG1bb729369
[2023-11-29 04:42:07,006 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/data/162d1cc42/5a8a3dade083470284556ce533e4bee5
[2023-11-29 04:42:07,008 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 04:42:07,010 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 04:42:07,011 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 04:42:07,012 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 04:42:07,016 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 04:42:07,017 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:42:07" (1/1) ...
[2023-11-29 04:42:07,018 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b784b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:07, skipping insertion in model container
[2023-11-29 04:42:07,018 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:42:07" (1/1) ...
[2023-11-29 04:42:07,142 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 04:42:07,343 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_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c[1176,1189]
[2023-11-29 04:42:07,903 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:42:07,912 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 04:42:07,921 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_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.6.prop1-func-interl.c[1176,1189]
[2023-11-29 04:42:08,316 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 04:42:08,331 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 04:42:08,331 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08 WrapperNode
[2023-11-29 04:42:08,331 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 04:42:08,332 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 04:42:08,333 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 04:42:08,333 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 04:42:08,340 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:08,432 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:08,667 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 7114
[2023-11-29 04:42:08,667 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 04:42:08,668 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 04:42:08,668 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 04:42:08,668 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 04:42:08,680 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:08,680 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:08,721 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:08,846 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-29 04:42:08,847 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:08,847 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:08,976 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:08,991 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:09,017 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:09,046 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:09,111 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 04:42:09,112 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 04:42:09,112 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 04:42:09,112 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 04:42:09,113 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (1/1) ...
[2023-11-29 04:42:09,119 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 04:42:09,130 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 04:42:09,143 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 04:42:09,151 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 04:42:09,180 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 04:42:09,180 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-11-29 04:42:09,180 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 04:42:09,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 04:42:10,113 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 04:42:10,115 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 04:42:28,205 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 04:42:28,485 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 04:42:28,485 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 04:42:28,485 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:42:28 BoogieIcfgContainer
[2023-11-29 04:42:28,486 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 04:42:28,488 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 04:42:28,488 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 04:42:28,490 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 04:42:28,490 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:42:07" (1/3) ...
[2023-11-29 04:42:28,491 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45882ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:42:28, skipping insertion in model container
[2023-11-29 04:42:28,491 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:08" (2/3) ...
[2023-11-29 04:42:28,491 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45882ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:42:28, skipping insertion in model container
[2023-11-29 04:42:28,491 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:42:28" (3/3) ...
[2023-11-29 04:42:28,493 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.6.prop1-func-interl.c
[2023-11-29 04:42:28,506 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 04:42:28,506 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 04:42:28,544 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 04:42:28,549 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;@459c2ab5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 04:42:28,550 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 04:42:28,553 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:28,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-11-29 04:42:28,558 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:42:28,558 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-11-29 04:42:28,559 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:42:28,563 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:42:28,564 INFO  L85        PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times
[2023-11-29 04:42:28,577 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-29 04:42:28,577 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862393520]
[2023-11-29 04:42:28,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:42:28,578 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 04:42:28,578 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat
[2023-11-29 04:42:28,581 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-29 04:42:28,586 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-11-29 04:42:29,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:42:29,754 INFO  L262         TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-11-29 04:42:29,773 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:42:29,951 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:42:29,952 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-29 04:42:29,953 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-29 04:42:29,953 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862393520]
[2023-11-29 04:42:29,953 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [862393520] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 04:42:29,954 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 04:42:29,954 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-29 04:42:29,955 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484177830]
[2023-11-29 04:42:29,956 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 04:42:29,960 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 04:42:29,961 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-29 04:42:29,986 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 04:42:29,987 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 04:42:29,989 INFO  L87              Difference]: Start difference. First operand  has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:34,619 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-29 04:42:35,556 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:42:35,556 INFO  L93              Difference]: Finished difference Result 16 states and 24 transitions.
[2023-11-29 04:42:35,557 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 04:42:35,559 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4
[2023-11-29 04:42:35,559 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:42:35,565 INFO  L225             Difference]: With dead ends: 16
[2023-11-29 04:42:35,565 INFO  L226             Difference]: Without dead ends: 9
[2023-11-29 04:42:35,566 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 04:42:35,569 INFO  L413           NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-11-29 04:42:35,570 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time]
[2023-11-29 04:42:35,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2023-11-29 04:42:35,593 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8.
[2023-11-29 04:42:35,594 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:35,595 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2023-11-29 04:42:35,596 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4
[2023-11-29 04:42:35,596 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:42:35,596 INFO  L495      AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2023-11-29 04:42:35,596 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:42:35,596 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2023-11-29 04:42:35,596 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-11-29 04:42:35,596 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:42:35,597 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1]
[2023-11-29 04:42:35,602 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-11-29 04:42:35,797 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 04:42:35,798 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:42:35,798 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:42:35,798 INFO  L85        PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times
[2023-11-29 04:42:35,804 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-29 04:42:35,805 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424121181]
[2023-11-29 04:42:35,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 04:42:35,805 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 04:42:35,805 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat
[2023-11-29 04:42:35,806 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-29 04:42:35,807 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-11-29 04:42:46,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 04:42:46,952 INFO  L262         TraceCheckSpWp]: Trace formula consists of 5995 conjuncts, 270 conjunts are in the unsatisfiable core
[2023-11-29 04:42:46,998 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-29 04:42:55,340 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:42:55,340 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-29 04:43:05,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 04:43:05,748 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-29 04:43:05,748 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424121181]
[2023-11-29 04:43:05,749 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [424121181] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-29 04:43:05,749 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-29 04:43:05,749 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2023-11-29 04:43:05,749 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687180153]
[2023-11-29 04:43:05,750 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-29 04:43:05,751 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-29 04:43:05,751 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-29 04:43:05,752 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-29 04:43:05,752 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2023-11-29 04:43:05,752 INFO  L87              Difference]: Start difference. First operand 8 states and 8 transitions. Second operand  has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:43:21,427 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-11-29 04:43:33,662 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-11-29 04:43:33,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 04:43:33,821 INFO  L93              Difference]: Finished difference Result 14 states and 14 transitions.
[2023-11-29 04:43:33,822 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-29 04:43:33,822 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 7
[2023-11-29 04:43:33,822 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 04:43:33,823 INFO  L225             Difference]: With dead ends: 14
[2023-11-29 04:43:33,823 INFO  L226             Difference]: Without dead ends: 12
[2023-11-29 04:43:33,823 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2023-11-29 04:43:33,825 INFO  L413           NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time
[2023-11-29 04:43:33,825 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time]
[2023-11-29 04:43:33,826 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2023-11-29 04:43:33,833 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11.
[2023-11-29 04:43:33,834 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:43:33,834 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions.
[2023-11-29 04:43:33,834 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7
[2023-11-29 04:43:33,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 04:43:33,835 INFO  L495      AbstractCegarLoop]: Abstraction has 11 states and 11 transitions.
[2023-11-29 04:43:33,835 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 04:43:33,835 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions.
[2023-11-29 04:43:33,835 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-29 04:43:33,835 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 04:43:33,835 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1]
[2023-11-29 04:43:33,885 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0
[2023-11-29 04:43:34,036 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 04:43:34,036 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 04:43:34,037 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 04:43:34,037 INFO  L85        PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times
[2023-11-29 04:43:34,044 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-29 04:43:34,044 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758828534]
[2023-11-29 04:43:34,045 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-29 04:43:34,045 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-29 04:43:34,045 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat
[2023-11-29 04:43:34,046 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-29 04:43:34,046 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898b5d00-a7cb-449f-9cfa-1e54b6dfa809/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-11-29 04:44:02,414 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-29 04:44:02,415 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-29 04:44:02,799 INFO  L262         TraceCheckSpWp]: Trace formula consists of 11706 conjuncts, 577 conjunts are in the unsatisfiable core
[2023-11-29 04:44:02,875 INFO  L285         TraceCheckSpWp]: Computing forward predicates...