./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version cf1a7837
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2e67766c6fd196971faf344e8fff85e5c895ea0afd7f2774008fd81029a9807
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-cf1a783
[2023-11-12 02:03:35,195 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-12 02:03:35,314 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-12 02:03:35,321 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-12 02:03:35,322 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-12 02:03:35,353 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-12 02:03:35,354 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-12 02:03:35,354 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-12 02:03:35,355 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-12 02:03:35,356 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-12 02:03:35,358 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-12 02:03:35,358 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-12 02:03:35,359 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-12 02:03:35,360 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-12 02:03:35,361 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-12 02:03:35,362 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-12 02:03:35,363 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-12 02:03:35,363 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-12 02:03:35,364 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-12 02:03:35,365 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-12 02:03:35,366 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-12 02:03:35,367 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-12 02:03:35,368 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-12 02:03:35,368 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-12 02:03:35,369 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-12 02:03:35,370 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-12 02:03:35,371 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-12 02:03:35,371 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-12 02:03:35,372 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-12 02:03:35,373 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-12 02:03:35,373 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-12 02:03:35,374 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-12 02:03:35,375 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-12 02:03:35,375 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-12 02:03:35,376 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-12 02:03:35,376 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-12 02:03:35,377 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-12 02:03:35,378 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-12 02:03:35,378 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-12 02:03:35,379 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_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/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_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2e67766c6fd196971faf344e8fff85e5c895ea0afd7f2774008fd81029a9807
[2023-11-12 02:03:35,763 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-12 02:03:35,807 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-12 02:03:35,811 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-12 02:03:35,815 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-12 02:03:35,816 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-12 02:03:35,818 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i
[2023-11-12 02:03:39,422 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-12 02:03:39,718 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-12 02:03:39,718 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i
[2023-11-12 02:03:39,730 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/data/e9979eab3/045fa4e66cfc48a9839e2678c79b924f/FLAG276ada7d9
[2023-11-12 02:03:39,747 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/data/e9979eab3/045fa4e66cfc48a9839e2678c79b924f
[2023-11-12 02:03:39,750 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-12 02:03:39,752 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-12 02:03:39,754 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-12 02:03:39,754 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-12 02:03:39,761 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-12 02:03:39,762 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:03:39" (1/1) ...
[2023-11-12 02:03:39,763 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c78c95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:39, skipping insertion in model container
[2023-11-12 02:03:39,763 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:03:39" (1/1) ...
[2023-11-12 02:03:39,803 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-12 02:03:39,971 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_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i[919,932]
[2023-11-12 02:03:40,066 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:03:40,087 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-12 02:03:40,104 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_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i[919,932]
[2023-11-12 02:03:40,165 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:03:40,193 INFO  L206         MainTranslator]: Completed translation
[2023-11-12 02:03:40,194 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40 WrapperNode
[2023-11-12 02:03:40,194 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-12 02:03:40,195 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-12 02:03:40,196 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-12 02:03:40,196 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-12 02:03:40,204 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,220 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,301 INFO  L138                Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 262
[2023-11-12 02:03:40,302 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-12 02:03:40,303 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-12 02:03:40,303 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-12 02:03:40,303 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-12 02:03:40,318 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,319 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,324 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,325 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,344 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,349 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,358 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,362 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,370 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-12 02:03:40,371 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-12 02:03:40,371 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-12 02:03:40,372 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-12 02:03:40,373 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (1/1) ...
[2023-11-12 02:03:40,381 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-12 02:03:40,415 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:03:40,438 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-12 02:03:40,463 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-12 02:03:40,488 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-12 02:03:40,489 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-11-12 02:03:40,489 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-11-12 02:03:40,489 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-12 02:03:40,490 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-12 02:03:40,490 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-12 02:03:40,646 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-12 02:03:40,649 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-12 02:03:41,305 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-12 02:03:41,328 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-12 02:03:41,331 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-12 02:03:41,335 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:03:41 BoogieIcfgContainer
[2023-11-12 02:03:41,335 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-12 02:03:41,342 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-12 02:03:41,342 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-12 02:03:41,346 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-12 02:03:41,347 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:03:39" (1/3) ...
[2023-11-12 02:03:41,348 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6913e92b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:03:41, skipping insertion in model container
[2023-11-12 02:03:41,348 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:40" (2/3) ...
[2023-11-12 02:03:41,351 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6913e92b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:03:41, skipping insertion in model container
[2023-11-12 02:03:41,351 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:03:41" (3/3) ...
[2023-11-12 02:03:41,352 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i
[2023-11-12 02:03:41,377 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-12 02:03:41,377 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-12 02:03:41,476 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-12 02:03:41,486 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;@e815ef0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-12 02:03:41,486 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-12 02:03:41,493 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 108 states, 72 states have (on average 1.5) internal successors, (108), 73 states have internal predecessors, (108), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33)
[2023-11-12 02:03:41,526 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2023-11-12 02:03:41,526 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:03:41,529 INFO  L195           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:03:41,531 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:03:41,542 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:03:41,542 INFO  L85        PathProgramCache]: Analyzing trace with hash 154600356, now seen corresponding path program 1 times
[2023-11-12 02:03:41,555 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:03:41,556 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818877969]
[2023-11-12 02:03:41,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:41,557 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:03:41,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:03:41,981 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:03:41,982 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818877969]
[2023-11-12 02:03:41,983 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-11-12 02:03:41,983 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276112537]
[2023-11-12 02:03:41,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:41,984 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:03:41,984 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:03:41,988 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:03:42,015 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-12 02:03:42,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:03:42,327 INFO  L262         TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-12 02:03:42,361 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:03:42,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked.
[2023-11-12 02:03:42,480 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:03:42,483 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276112537] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:03:42,483 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:03:42,483 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-12 02:03:42,495 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913543303]
[2023-11-12 02:03:42,499 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:03:42,506 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-12 02:03:42,508 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:03:42,571 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-12 02:03:42,572 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-12 02:03:42,577 INFO  L87              Difference]: Start difference. First operand  has 108 states, 72 states have (on average 1.5) internal successors, (108), 73 states have internal predecessors, (108), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand  has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33)
[2023-11-12 02:03:42,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:03:42,651 INFO  L93              Difference]: Finished difference Result 209 states and 375 transitions.
[2023-11-12 02:03:42,652 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-12 02:03:42,654 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 212
[2023-11-12 02:03:42,655 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:03:42,665 INFO  L225             Difference]: With dead ends: 209
[2023-11-12 02:03:42,666 INFO  L226             Difference]: Without dead ends: 104
[2023-11-12 02:03:42,671 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-12 02:03:42,675 INFO  L413           NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:03:42,677 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:03:42,699 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2023-11-12 02:03:42,762 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2023-11-12 02:03:42,765 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 104 states, 69 states have (on average 1.463768115942029) internal successors, (101), 69 states have internal predecessors, (101), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33)
[2023-11-12 02:03:42,768 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 167 transitions.
[2023-11-12 02:03:42,770 INFO  L78                 Accepts]: Start accepts. Automaton has 104 states and 167 transitions. Word has length 212
[2023-11-12 02:03:42,771 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:03:42,771 INFO  L495      AbstractCegarLoop]: Abstraction has 104 states and 167 transitions.
[2023-11-12 02:03:42,772 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33)
[2023-11-12 02:03:42,772 INFO  L276                IsEmpty]: Start isEmpty. Operand 104 states and 167 transitions.
[2023-11-12 02:03:42,780 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2023-11-12 02:03:42,780 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:03:42,781 INFO  L195           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:03:42,788 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-12 02:03:42,983 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:03:42,984 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:03:42,984 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:03:42,984 INFO  L85        PathProgramCache]: Analyzing trace with hash 1420708254, now seen corresponding path program 1 times
[2023-11-12 02:03:42,985 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:03:42,985 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999740285]
[2023-11-12 02:03:42,985 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:42,985 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:03:43,102 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:03:43,108 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289412055]
[2023-11-12 02:03:43,109 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:43,109 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:03:43,110 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:03:43,111 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:03:43,121 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-12 02:03:43,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:03:43,412 INFO  L262         TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-12 02:03:43,435 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:03:44,036 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked.
[2023-11-12 02:03:44,037 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:03:44,039 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:03:44,042 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999740285]
[2023-11-12 02:03:44,042 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:03:44,042 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289412055]
[2023-11-12 02:03:44,043 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289412055] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:03:44,043 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:03:44,043 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-12 02:03:44,044 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646091369]
[2023-11-12 02:03:44,044 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:03:44,048 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-12 02:03:44,048 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:03:44,050 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-12 02:03:44,051 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:03:44,051 INFO  L87              Difference]: Start difference. First operand 104 states and 167 transitions. Second operand  has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33)
[2023-11-12 02:03:44,642 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:03:44,643 INFO  L93              Difference]: Finished difference Result 305 states and 491 transitions.
[2023-11-12 02:03:44,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-12 02:03:44,644 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212
[2023-11-12 02:03:44,646 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:03:44,654 INFO  L225             Difference]: With dead ends: 305
[2023-11-12 02:03:44,654 INFO  L226             Difference]: Without dead ends: 204
[2023-11-12 02:03:44,658 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-11-12 02:03:44,660 INFO  L413           NwaCegarLoop]: 280 mSDtfsCounter, 164 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:03:44,661 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 600 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:03:44,662 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204 states.
[2023-11-12 02:03:44,711 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 106.
[2023-11-12 02:03:44,712 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 106 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 71 states have internal predecessors, (103), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33)
[2023-11-12 02:03:44,714 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 169 transitions.
[2023-11-12 02:03:44,714 INFO  L78                 Accepts]: Start accepts. Automaton has 106 states and 169 transitions. Word has length 212
[2023-11-12 02:03:44,717 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:03:44,718 INFO  L495      AbstractCegarLoop]: Abstraction has 106 states and 169 transitions.
[2023-11-12 02:03:44,718 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33)
[2023-11-12 02:03:44,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 106 states and 169 transitions.
[2023-11-12 02:03:44,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 214
[2023-11-12 02:03:44,724 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:03:44,724 INFO  L195           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:03:44,737 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-12 02:03:44,932 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2023-11-12 02:03:44,932 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:03:44,933 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:03:44,933 INFO  L85        PathProgramCache]: Analyzing trace with hash 1919287950, now seen corresponding path program 1 times
[2023-11-12 02:03:44,933 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:03:44,933 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142590082]
[2023-11-12 02:03:44,933 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:44,934 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:03:45,036 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:03:45,047 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150218899]
[2023-11-12 02:03:45,050 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:45,050 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:03:45,050 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:03:45,052 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:03:45,063 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-12 02:03:45,305 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:03:45,308 INFO  L262         TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-12 02:03:45,316 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:03:45,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked.
[2023-11-12 02:03:45,736 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:03:45,736 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:03:45,736 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142590082]
[2023-11-12 02:03:45,737 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:03:45,737 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150218899]
[2023-11-12 02:03:45,737 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150218899] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:03:45,738 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:03:45,738 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-12 02:03:45,738 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972890846]
[2023-11-12 02:03:45,739 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:03:45,740 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:03:45,740 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:03:45,741 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:03:45,742 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:03:45,742 INFO  L87              Difference]: Start difference. First operand 106 states and 169 transitions. Second operand  has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33)
[2023-11-12 02:03:45,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:03:45,988 INFO  L93              Difference]: Finished difference Result 352 states and 565 transitions.
[2023-11-12 02:03:45,988 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:03:45,989 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213
[2023-11-12 02:03:45,991 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:03:45,994 INFO  L225             Difference]: With dead ends: 352
[2023-11-12 02:03:45,994 INFO  L226             Difference]: Without dead ends: 249
[2023-11-12 02:03:45,996 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:03:45,998 INFO  L413           NwaCegarLoop]: 219 mSDtfsCounter, 162 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-12 02:03:45,999 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 536 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-12 02:03:46,000 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 249 states.
[2023-11-12 02:03:46,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217.
[2023-11-12 02:03:46,056 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 217 states, 148 states have (on average 1.4797297297297298) internal successors, (219), 148 states have internal predecessors, (219), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66)
[2023-11-12 02:03:46,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 351 transitions.
[2023-11-12 02:03:46,061 INFO  L78                 Accepts]: Start accepts. Automaton has 217 states and 351 transitions. Word has length 213
[2023-11-12 02:03:46,063 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:03:46,064 INFO  L495      AbstractCegarLoop]: Abstraction has 217 states and 351 transitions.
[2023-11-12 02:03:46,064 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33)
[2023-11-12 02:03:46,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 217 states and 351 transitions.
[2023-11-12 02:03:46,069 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 215
[2023-11-12 02:03:46,069 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:03:46,072 INFO  L195           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:03:46,090 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-12 02:03:46,279 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:03:46,280 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:03:46,280 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:03:46,280 INFO  L85        PathProgramCache]: Analyzing trace with hash -26770679, now seen corresponding path program 1 times
[2023-11-12 02:03:46,281 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:03:46,281 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928551095]
[2023-11-12 02:03:46,281 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:46,281 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:03:46,368 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:03:46,368 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215755758]
[2023-11-12 02:03:46,368 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:46,369 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:03:46,369 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:03:46,378 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:03:46,395 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-12 02:03:46,629 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:03:46,633 INFO  L262         TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-12 02:03:46,642 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:03:46,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 978 proven. 63 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked.
[2023-11-12 02:03:46,997 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-12 02:03:47,376 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked.
[2023-11-12 02:03:47,377 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:03:47,377 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928551095]
[2023-11-12 02:03:47,377 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:03:47,377 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215755758]
[2023-11-12 02:03:47,378 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [215755758] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-12 02:03:47,378 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-12 02:03:47,378 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9
[2023-11-12 02:03:47,378 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335532551]
[2023-11-12 02:03:47,379 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-12 02:03:47,380 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-12 02:03:47,380 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:03:47,381 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-12 02:03:47,382 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-11-12 02:03:47,382 INFO  L87              Difference]: Start difference. First operand 217 states and 351 transitions. Second operand  has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55)
[2023-11-12 02:03:48,079 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:03:48,079 INFO  L93              Difference]: Finished difference Result 342 states and 543 transitions.
[2023-11-12 02:03:48,080 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-11-12 02:03:48,080 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 214
[2023-11-12 02:03:48,081 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:03:48,086 INFO  L225             Difference]: With dead ends: 342
[2023-11-12 02:03:48,086 INFO  L226             Difference]: Without dead ends: 231
[2023-11-12 02:03:48,088 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2023-11-12 02:03:48,093 INFO  L413           NwaCegarLoop]: 194 mSDtfsCounter, 357 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-11-12 02:03:48,095 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 571 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-11-12 02:03:48,098 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 231 states.
[2023-11-12 02:03:48,175 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225.
[2023-11-12 02:03:48,178 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 225 states, 154 states have (on average 1.448051948051948) internal successors, (223), 154 states have internal predecessors, (223), 66 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66)
[2023-11-12 02:03:48,181 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 355 transitions.
[2023-11-12 02:03:48,181 INFO  L78                 Accepts]: Start accepts. Automaton has 225 states and 355 transitions. Word has length 214
[2023-11-12 02:03:48,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:03:48,182 INFO  L495      AbstractCegarLoop]: Abstraction has 225 states and 355 transitions.
[2023-11-12 02:03:48,183 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55)
[2023-11-12 02:03:48,183 INFO  L276                IsEmpty]: Start isEmpty. Operand 225 states and 355 transitions.
[2023-11-12 02:03:48,187 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 215
[2023-11-12 02:03:48,187 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:03:48,187 INFO  L195           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:03:48,196 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-12 02:03:48,396 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:03:48,396 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:03:48,397 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:03:48,398 INFO  L85        PathProgramCache]: Analyzing trace with hash 192084039, now seen corresponding path program 1 times
[2023-11-12 02:03:48,398 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:03:48,398 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270173551]
[2023-11-12 02:03:48,398 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:48,399 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:03:48,450 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:03:48,451 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661283757]
[2023-11-12 02:03:48,451 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:03:48,451 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:03:48,451 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:03:48,452 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:03:48,487 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-12 02:03:48,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:03:48,831 INFO  L262         TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 38 conjunts are in the unsatisfiable core
[2023-11-12 02:03:48,842 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:03:52,882 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 422 proven. 171 refuted. 0 times theorem prover too weak. 1519 trivial. 0 not checked.
[2023-11-12 02:03:52,883 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-12 02:03:58,827 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:03:58,828 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270173551]
[2023-11-12 02:03:58,828 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:03:58,832 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661283757]
[2023-11-12 02:03:58,833 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [661283757] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-12 02:03:58,833 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2023-11-12 02:03:58,833 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17
[2023-11-12 02:03:58,834 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313080655]
[2023-11-12 02:03:58,834 INFO  L85    oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2023-11-12 02:03:58,835 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-11-12 02:03:58,835 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:03:58,836 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-11-12 02:03:58,846 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756
[2023-11-12 02:03:58,847 INFO  L87              Difference]: Start difference. First operand 225 states and 355 transitions. Second operand  has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33)
[2023-11-12 02:04:04,825 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:04:04,826 INFO  L93              Difference]: Finished difference Result 809 states and 1253 transitions.
[2023-11-12 02:04:04,826 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2023-11-12 02:04:04,827 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 214
[2023-11-12 02:04:04,827 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:04:04,834 INFO  L225             Difference]: With dead ends: 809
[2023-11-12 02:04:04,834 INFO  L226             Difference]: Without dead ends: 587
[2023-11-12 02:04:04,838 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=506, Invalid=2146, Unknown=0, NotChecked=0, Total=2652
[2023-11-12 02:04:04,839 INFO  L413           NwaCegarLoop]: 97 mSDtfsCounter, 833 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-11-12 02:04:04,839 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1262 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-11-12 02:04:04,842 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 587 states.
[2023-11-12 02:04:04,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 445.
[2023-11-12 02:04:04,950 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 445 states, 337 states have (on average 1.489614243323442) internal successors, (502), 337 states have internal predecessors, (502), 99 states have call successors, (99), 8 states have call predecessors, (99), 8 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99)
[2023-11-12 02:04:04,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 700 transitions.
[2023-11-12 02:04:04,957 INFO  L78                 Accepts]: Start accepts. Automaton has 445 states and 700 transitions. Word has length 214
[2023-11-12 02:04:04,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:04:04,958 INFO  L495      AbstractCegarLoop]: Abstraction has 445 states and 700 transitions.
[2023-11-12 02:04:04,958 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33)
[2023-11-12 02:04:04,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 445 states and 700 transitions.
[2023-11-12 02:04:04,963 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 215
[2023-11-12 02:04:04,963 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:04:04,964 INFO  L195           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:04:04,987 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-12 02:04:05,172 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:04:05,173 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:04:05,173 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:04:05,173 INFO  L85        PathProgramCache]: Analyzing trace with hash -487974331, now seen corresponding path program 1 times
[2023-11-12 02:04:05,174 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:04:05,174 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279879186]
[2023-11-12 02:04:05,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:04:05,175 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:04:05,339 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:04:05,339 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733771083]
[2023-11-12 02:04:05,339 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:04:05,339 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:04:05,340 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:04:05,341 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:04:05,363 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42c0e65f-e6b2-4b6f-b6e9-72ffa5766cfa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-12 02:04:05,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:04:05,707 INFO  L262         TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 40 conjunts are in the unsatisfiable core
[2023-11-12 02:04:05,718 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:04:18,565 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 753 proven. 225 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked.
[2023-11-12 02:04:18,566 INFO  L327         TraceCheckSpWp]: Computing backward predicates...