./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-23.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-23.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a26493256c46e7f587d292b102e323f1b0854b482605107bb53eec5d533ef8f
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:53:33,228 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:53:33,352 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-19 07:53:33,362 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:53:33,363 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:53:33,393 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:53:33,394 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:53:33,395 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:53:33,396 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:53:33,396 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:53:33,397 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:53:33,398 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-19 07:53:33,399 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-19 07:53:33,399 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:53:33,400 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:53:33,400 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-19 07:53:33,401 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-19 07:53:33,402 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-19 07:53:33,402 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-19 07:53:33,403 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:53:33,404 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:53:33,410 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:53:33,410 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-19 07:53:33,411 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-19 07:53:33,411 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-19 07:53:33,412 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:53:33,412 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-19 07:53:33,413 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-19 07:53:33,413 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:53:33,413 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:53:33,414 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:53:33,414 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:53:33,414 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-19 07:53:33,415 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:53:33,415 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:53:33,415 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:53:33,415 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:53:33,415 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:53:33,416 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:53:33,416 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_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a26493256c46e7f587d292b102e323f1b0854b482605107bb53eec5d533ef8f
[2023-11-19 07:53:33,770 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:53:33,807 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:53:33,810 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:53:33,812 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-19 07:53:33,813 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-19 07:53:33,814 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-23.i
[2023-11-19 07:53:36,946 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:53:37,262 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-19 07:53:37,264 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-23.i
[2023-11-19 07:53:37,281 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/data/0beff56e5/d101420eb5fb47baa62631d57a74ab8f/FLAG34ac5cee9
[2023-11-19 07:53:37,299 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/data/0beff56e5/d101420eb5fb47baa62631d57a74ab8f
[2023-11-19 07:53:37,306 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:53:37,308 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:53:37,310 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:53:37,311 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:53:37,317 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:53:37,318 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,319 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4088d735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37, skipping insertion in model container
[2023-11-19 07:53:37,320 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,372 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:53:37,590 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_ebc821fc-095a-447a-abbf-18bd4b7deb82/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-23.i[913,926]
[2023-11-19 07:53:37,711 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:53:37,734 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-19 07:53:37,755 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_ebc821fc-095a-447a-abbf-18bd4b7deb82/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-23.i[913,926]
[2023-11-19 07:53:37,793 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:53:37,814 INFO  L206         MainTranslator]: Completed translation
[2023-11-19 07:53:37,815 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37 WrapperNode
[2023-11-19 07:53:37,815 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:53:37,817 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:53:37,817 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:53:37,817 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:53:37,837 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,862 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,927 INFO  L138                Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 146
[2023-11-19 07:53:37,927 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:53:37,928 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:53:37,929 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:53:37,929 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:53:37,941 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,941 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,946 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,946 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,962 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,966 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,971 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,975 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,981 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:53:37,982 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:53:37,983 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:53:37,983 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:53:37,984 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ...
[2023-11-19 07:53:37,991 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:53:38,008 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:53:38,022 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:53:38,038 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:53:38,073 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:53:38,073 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-11-19 07:53:38,073 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-11-19 07:53:38,074 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:53:38,074 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:53:38,074 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:53:38,180 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-19 07:53:38,183 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:53:38,627 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-19 07:53:38,639 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:53:38,639 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-19 07:53:38,644 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:38 BoogieIcfgContainer
[2023-11-19 07:53:38,644 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:53:38,648 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:53:38,649 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:53:38,653 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:53:38,654 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:37" (1/3) ...
[2023-11-19 07:53:38,655 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ec7908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:38, skipping insertion in model container
[2023-11-19 07:53:38,655 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (2/3) ...
[2023-11-19 07:53:38,655 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ec7908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:38, skipping insertion in model container
[2023-11-19 07:53:38,656 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:38" (3/3) ...
[2023-11-19 07:53:38,657 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-23.i
[2023-11-19 07:53:38,684 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:53:38,684 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 07:53:38,758 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:53:38,767 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;@59773ad7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:53:38,768 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 07:53:38,773 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 65 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 42 states have internal predecessors, (56), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2023-11-19 07:53:38,792 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-11-19 07:53:38,793 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:53:38,794 INFO  L195           NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:53:38,795 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:53:38,801 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:53:38,802 INFO  L85        PathProgramCache]: Analyzing trace with hash 622962357, now seen corresponding path program 1 times
[2023-11-19 07:53:38,814 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:53:38,815 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178769779]
[2023-11-19 07:53:38,815 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:53:38,816 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:53:39,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:53:39,257 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:53:39,258 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178769779]
[2023-11-19 07:53:39,258 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-11-19 07:53:39,259 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008234232]
[2023-11-19 07:53:39,259 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:53:39,260 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:53:39,260 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:53:39,262 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:53:39,297 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 07:53:39,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:53:39,555 INFO  L262         TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-19 07:53:39,580 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:53:39,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked.
[2023-11-19 07:53:39,664 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:53:39,665 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008234232] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:53:39,666 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:53:39,666 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:53:39,669 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205677494]
[2023-11-19 07:53:39,670 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:53:39,677 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 07:53:39,678 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:53:39,731 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 07:53:39,733 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:53:39,736 INFO  L87              Difference]: Start difference. First operand  has 65 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 42 states have internal predecessors, (56), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand  has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21)
[2023-11-19 07:53:39,780 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:53:39,780 INFO  L93              Difference]: Finished difference Result 123 states and 211 transitions.
[2023-11-19 07:53:39,782 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-19 07:53:39,784 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135
[2023-11-19 07:53:39,784 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:53:39,797 INFO  L225             Difference]: With dead ends: 123
[2023-11-19 07:53:39,797 INFO  L226             Difference]: Without dead ends: 61
[2023-11-19 07:53:39,803 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:53:39,808 INFO  L413           NwaCegarLoop]: 91 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, 91 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
[2023-11-19 07:53:39,810 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:53:39,831 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2023-11-19 07:53:39,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61.
[2023-11-19 07:53:39,867 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2023-11-19 07:53:39,870 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions.
[2023-11-19 07:53:39,872 INFO  L78                 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 135
[2023-11-19 07:53:39,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:53:39,874 INFO  L495      AbstractCegarLoop]: Abstraction has 61 states and 91 transitions.
[2023-11-19 07:53:39,874 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21)
[2023-11-19 07:53:39,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions.
[2023-11-19 07:53:39,879 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-11-19 07:53:39,880 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:53:39,880 INFO  L195           NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:53:39,909 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 07:53:40,106 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-11-19 07:53:40,106 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:53:40,107 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:53:40,107 INFO  L85        PathProgramCache]: Analyzing trace with hash -232026073, now seen corresponding path program 1 times
[2023-11-19 07:53:40,107 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:53:40,107 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147333660]
[2023-11-19 07:53:40,107 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:53:40,108 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:53:40,224 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-19 07:53:40,225 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812046725]
[2023-11-19 07:53:40,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:53:40,225 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:53:40,226 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:53:40,227 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:53:40,241 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc821fc-095a-447a-abbf-18bd4b7deb82/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 07:53:40,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:53:40,541 INFO  L262         TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 41 conjunts are in the unsatisfiable core
[2023-11-19 07:53:40,550 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:53:42,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 840 backedges. 456 proven. 66 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked.
[2023-11-19 07:53:42,629 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:54:13,470 WARN  L293               SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2023-11-19 07:54:26,632 WARN  L293               SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)