./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-59.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version e7bb482b
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_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 fc0a0af56e5e9321edcb3f4b8b60429c2310fce90b678a839adfd55ae003bf1d
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 23:06:08,965 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 23:06:09,068 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-06 23:06:09,080 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 23:06:09,080 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 23:06:09,121 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 23:06:09,122 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 23:06:09,123 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 23:06:09,124 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 23:06:09,129 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 23:06:09,130 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 23:06:09,131 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 23:06:09,131 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 23:06:09,133 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 23:06:09,134 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 23:06:09,134 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-06 23:06:09,135 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 23:06:09,135 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-06 23:06:09,136 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 23:06:09,136 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 23:06:09,137 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 23:06:09,137 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 23:06:09,138 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-06 23:06:09,138 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 23:06:09,139 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 23:06:09,140 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 23:06:09,140 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 23:06:09,141 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 23:06:09,141 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 23:06:09,141 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 23:06:09,143 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 23:06:09,143 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 23:06:09,143 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 23:06:09,144 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 23:06:09,144 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 23:06:09,144 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 23:06:09,145 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 23:06:09,145 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 23:06:09,145 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 23:06:09,145 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_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/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_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 -> fc0a0af56e5e9321edcb3f4b8b60429c2310fce90b678a839adfd55ae003bf1d
[2023-11-06 23:06:09,452 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 23:06:09,493 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 23:06:09,496 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 23:06:09,498 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 23:06:09,499 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 23:06:09,500 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-59.i
[2023-11-06 23:06:12,724 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 23:06:12,930 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 23:06:12,931 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-59.i
[2023-11-06 23:06:12,945 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/data/065ab9cd4/7da280dc8ba24639b261d32fe46547c4/FLAGf2b538821
[2023-11-06 23:06:12,960 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/data/065ab9cd4/7da280dc8ba24639b261d32fe46547c4
[2023-11-06 23:06:12,962 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 23:06:12,964 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 23:06:12,966 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 23:06:12,966 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 23:06:12,971 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 23:06:12,972 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:12" (1/1) ...
[2023-11-06 23:06:12,973 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b9f257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:12, skipping insertion in model container
[2023-11-06 23:06:12,974 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:12" (1/1) ...
[2023-11-06 23:06:13,006 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 23:06:13,182 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_09d39c27-8448-49f5-867c-5367976ef66d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-59.i[913,926]
[2023-11-06 23:06:13,246 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 23:06:13,258 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 23:06:13,271 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_09d39c27-8448-49f5-867c-5367976ef66d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-59.i[913,926]
[2023-11-06 23:06:13,307 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 23:06:13,336 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 23:06:13,337 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13 WrapperNode
[2023-11-06 23:06:13,337 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 23:06:13,338 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 23:06:13,339 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 23:06:13,339 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 23:06:13,346 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,359 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,412 INFO  L138                Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129
[2023-11-06 23:06:13,424 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 23:06:13,425 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 23:06:13,425 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 23:06:13,426 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 23:06:13,434 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,435 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,443 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,444 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,457 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,460 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,463 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,465 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,470 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 23:06:13,471 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 23:06:13,471 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 23:06:13,471 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 23:06:13,472 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (1/1) ...
[2023-11-06 23:06:13,487 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 23:06:13,507 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:06:13,536 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 23:06:13,555 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 23:06:13,577 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 23:06:13,578 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-11-06 23:06:13,578 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-11-06 23:06:13,578 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 23:06:13,578 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 23:06:13,579 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 23:06:13,697 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 23:06:13,699 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 23:06:14,133 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 23:06:14,145 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 23:06:14,145 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 23:06:14,147 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:14 BoogieIcfgContainer
[2023-11-06 23:06:14,148 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 23:06:14,151 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 23:06:14,151 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 23:06:14,155 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 23:06:14,155 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:06:12" (1/3) ...
[2023-11-06 23:06:14,156 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f7f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:14, skipping insertion in model container
[2023-11-06 23:06:14,156 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:13" (2/3) ...
[2023-11-06 23:06:14,157 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f7f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:14, skipping insertion in model container
[2023-11-06 23:06:14,157 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:14" (3/3) ...
[2023-11-06 23:06:14,159 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-59.i
[2023-11-06 23:06:14,180 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 23:06:14,181 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 23:06:14,270 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 23:06:14,296 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=LoopsAndPotentialCycles, 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;@7cccf779, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 23:06:14,297 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 23:06:14,303 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 54 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2023-11-06 23:06:14,316 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2023-11-06 23:06:14,316 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:06:14,317 INFO  L195           NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:06:14,318 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:06:14,323 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:06:14,323 INFO  L85        PathProgramCache]: Analyzing trace with hash 1164860862, now seen corresponding path program 1 times
[2023-11-06 23:06:14,333 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:06:14,333 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265244980]
[2023-11-06 23:06:14,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:14,334 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:06:14,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:14,568 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:06:14,568 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265244980]
[2023-11-06 23:06:14,569 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-11-06 23:06:14,569 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495194038]
[2023-11-06 23:06:14,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:14,570 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:06:14,570 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:06:14,574 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:06:14,619 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 23:06:14,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:14,776 INFO  L262         TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-06 23:06:14,786 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:06:14,827 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked.
[2023-11-06 23:06:14,828 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:06:14,829 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [495194038] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:06:14,829 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:06:14,829 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-06 23:06:14,832 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131574694]
[2023-11-06 23:06:14,832 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:06:14,837 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-06 23:06:14,838 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:06:14,869 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-06 23:06:14,870 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-06 23:06:14,872 INFO  L87              Difference]: Start difference. First operand  has 54 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14)
[2023-11-06 23:06:14,900 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:06:14,900 INFO  L93              Difference]: Finished difference Result 101 states and 168 transitions.
[2023-11-06 23:06:14,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-06 23:06:14,902 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95
[2023-11-06 23:06:14,903 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:06:14,910 INFO  L225             Difference]: With dead ends: 101
[2023-11-06 23:06:14,911 INFO  L226             Difference]: Without dead ends: 50
[2023-11-06 23:06:14,914 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-06 23:06:14,918 INFO  L413           NwaCegarLoop]: 73 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, 73 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
[2023-11-06 23:06:14,919 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 23:06:14,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2023-11-06 23:06:14,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2023-11-06 23:06:14,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2023-11-06 23:06:14,966 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 73 transitions.
[2023-11-06 23:06:14,968 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 73 transitions. Word has length 95
[2023-11-06 23:06:14,968 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:06:14,969 INFO  L495      AbstractCegarLoop]: Abstraction has 50 states and 73 transitions.
[2023-11-06 23:06:14,969 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14)
[2023-11-06 23:06:14,969 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 73 transitions.
[2023-11-06 23:06:14,974 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2023-11-06 23:06:14,974 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:06:14,974 INFO  L195           NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:06:14,985 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 23:06:15,179 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-11-06 23:06:15,181 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:06:15,181 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:06:15,182 INFO  L85        PathProgramCache]: Analyzing trace with hash 1236847222, now seen corresponding path program 1 times
[2023-11-06 23:06:15,182 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:06:15,182 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750931926]
[2023-11-06 23:06:15,183 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:15,183 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:06:15,291 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:06:15,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669762623]
[2023-11-06 23:06:15,292 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:15,292 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:06:15,293 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:06:15,306 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:06:15,327 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 23:06:15,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:15,478 INFO  L262         TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-06 23:06:15,492 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:06:15,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked.
[2023-11-06 23:06:15,669 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:06:15,669 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:06:15,670 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750931926]
[2023-11-06 23:06:15,670 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:06:15,670 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669762623]
[2023-11-06 23:06:15,670 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [669762623] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:06:15,670 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:06:15,671 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-06 23:06:15,671 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387672741]
[2023-11-06 23:06:15,671 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:06:15,672 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 23:06:15,672 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:06:15,673 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 23:06:15,673 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 23:06:15,674 INFO  L87              Difference]: Start difference. First operand 50 states and 73 transitions. Second operand  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14)
[2023-11-06 23:06:15,819 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:06:15,820 INFO  L93              Difference]: Finished difference Result 145 states and 214 transitions.
[2023-11-06 23:06:15,821 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 23:06:15,822 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95
[2023-11-06 23:06:15,824 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:06:15,828 INFO  L225             Difference]: With dead ends: 145
[2023-11-06 23:06:15,829 INFO  L226             Difference]: Without dead ends: 98
[2023-11-06 23:06:15,830 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 23:06:15,831 INFO  L413           NwaCegarLoop]: 70 mSDtfsCounter, 48 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:06:15,834 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 203 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:06:15,837 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2023-11-06 23:06:15,874 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 79.
[2023-11-06 23:06:15,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2023-11-06 23:06:15,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 115 transitions.
[2023-11-06 23:06:15,879 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 115 transitions. Word has length 95
[2023-11-06 23:06:15,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:06:15,882 INFO  L495      AbstractCegarLoop]: Abstraction has 79 states and 115 transitions.
[2023-11-06 23:06:15,883 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14)
[2023-11-06 23:06:15,883 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 115 transitions.
[2023-11-06 23:06:15,892 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2023-11-06 23:06:15,893 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:06:15,894 INFO  L195           NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:06:15,905 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-06 23:06:16,105 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:06:16,105 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:06:16,106 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:06:16,106 INFO  L85        PathProgramCache]: Analyzing trace with hash 1287173988, now seen corresponding path program 1 times
[2023-11-06 23:06:16,106 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:06:16,106 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685357180]
[2023-11-06 23:06:16,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:16,107 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:06:16,154 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:06:16,164 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989602660]
[2023-11-06 23:06:16,164 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:16,164 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:06:16,164 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:06:16,168 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:06:16,175 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-06 23:06:16,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:16,562 INFO  L262         TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-06 23:06:16,567 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:06:16,770 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked.
[2023-11-06 23:06:16,770 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 23:06:16,771 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:06:16,771 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685357180]
[2023-11-06 23:06:16,771 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:06:16,771 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989602660]
[2023-11-06 23:06:16,772 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [989602660] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 23:06:16,772 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 23:06:16,772 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 23:06:16,772 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795632604]
[2023-11-06 23:06:16,772 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 23:06:16,773 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 23:06:16,773 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:06:16,774 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 23:06:16,774 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-11-06 23:06:16,774 INFO  L87              Difference]: Start difference. First operand 79 states and 115 transitions. Second operand  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14)
[2023-11-06 23:06:16,993 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:06:16,994 INFO  L93              Difference]: Finished difference Result 183 states and 267 transitions.
[2023-11-06 23:06:16,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 23:06:16,995 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96
[2023-11-06 23:06:16,996 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:06:16,997 INFO  L225             Difference]: With dead ends: 183
[2023-11-06 23:06:16,998 INFO  L226             Difference]: Without dead ends: 136
[2023-11-06 23:06:16,999 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2023-11-06 23:06:17,000 INFO  L413           NwaCegarLoop]: 71 mSDtfsCounter, 111 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:06:17,001 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 230 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 23:06:17,002 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2023-11-06 23:06:17,027 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124.
[2023-11-06 23:06:17,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 124 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42)
[2023-11-06 23:06:17,030 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions.
[2023-11-06 23:06:17,031 INFO  L78                 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 96
[2023-11-06 23:06:17,031 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:06:17,031 INFO  L495      AbstractCegarLoop]: Abstraction has 124 states and 182 transitions.
[2023-11-06 23:06:17,032 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14)
[2023-11-06 23:06:17,032 INFO  L276                IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions.
[2023-11-06 23:06:17,033 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2023-11-06 23:06:17,033 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:06:17,034 INFO  L195           NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:06:17,045 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-06 23:06:17,240 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:06:17,240 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:06:17,241 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:06:17,241 INFO  L85        PathProgramCache]: Analyzing trace with hash 866463787, now seen corresponding path program 1 times
[2023-11-06 23:06:17,241 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:06:17,242 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931248690]
[2023-11-06 23:06:17,242 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:17,242 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:06:17,279 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:06:17,279 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471440577]
[2023-11-06 23:06:17,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:06:17,280 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:06:17,280 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:06:17,281 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:06:17,311 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-06 23:06:17,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:06:17,803 INFO  L262         TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjunts are in the unsatisfiable core
[2023-11-06 23:06:17,809 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:06:19,539 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 169 proven. 105 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked.
[2023-11-06 23:06:19,540 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 23:06:30,425 WARN  L293               SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2023-11-06 23:06:59,866 WARN  L293               SmtUtils]: Spent 10.50s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2023-11-06 23:07:18,152 WARN  L839   $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_~var_1_4~0 256))) (let ((.cse4 (mod c_~var_1_19~0 4294967296)) (.cse2 (div (mod c_~var_1_6~0 65536) .cse7))) (let ((.cse0 (mod (+ .cse7 c_~var_1_7~0) 65536)) (.cse3 (mod (* c_~var_1_19~0 .cse2) 4294967296)) (.cse5 (mod |c_ULTIMATE.start_step_~stepLocal_2~0#1| 65536)) (.cse6 (+ (mod c_~var_1_7~0 65536) .cse7 1)) (.cse1 (+ .cse4 1))) (and (or (< .cse0 .cse1) (not (= (mod (* .cse2 .cse0) 4294967296) .cse0))) (or (not (= .cse3 .cse0)) (< .cse4 .cse0)) (or (< .cse5 .cse3) (< .cse3 .cse6) (< .cse4 .cse3)) (forall ((v_z_6 Int)) (or (not (= (mod (* v_z_6 .cse2) 4294967296) v_z_6)) (< .cse5 v_z_6) (< v_z_6 .cse6) (< v_z_6 .cse1))))))) is different from false
[2023-11-06 23:08:19,529 WARN  L293               SmtUtils]: Spent 16.85s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2023-11-06 23:09:33,047 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:09:33,047 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931248690]
[2023-11-06 23:09:33,048 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:09:33,048 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471440577]
[2023-11-06 23:09:33,048 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471440577] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-06 23:09:33,048 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2023-11-06 23:09:33,049 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22
[2023-11-06 23:09:33,049 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922979609]
[2023-11-06 23:09:33,049 INFO  L85    oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2023-11-06 23:09:33,050 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2023-11-06 23:09:33,050 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:09:33,051 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2023-11-06 23:09:33,052 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=673, Unknown=26, NotChecked=58, Total=992
[2023-11-06 23:09:33,053 INFO  L87              Difference]: Start difference. First operand 124 states and 182 transitions. Second operand  has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 6 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)
[2023-11-06 23:09:52,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:09:52,101 INFO  L93              Difference]: Finished difference Result 264 states and 334 transitions.
[2023-11-06 23:09:52,102 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2023-11-06 23:09:52,102 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 6 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 97
[2023-11-06 23:09:52,103 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:09:52,106 INFO  L225             Difference]: With dead ends: 264
[2023-11-06 23:09:52,106 INFO  L226             Difference]: Without dead ends: 217
[2023-11-06 23:09:52,108 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 141.1s TimeCoverageRelationStatistics Valid=522, Invalid=1523, Unknown=29, NotChecked=88, Total=2162
[2023-11-06 23:09:52,109 INFO  L413           NwaCegarLoop]: 57 mSDtfsCounter, 134 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:09:52,110 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 348 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2023-11-06 23:09:52,111 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 217 states.
[2023-11-06 23:09:52,146 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 186.
[2023-11-06 23:09:52,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 186 states, 125 states have (on average 1.16) internal successors, (145), 125 states have internal predecessors, (145), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42)
[2023-11-06 23:09:52,149 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 229 transitions.
[2023-11-06 23:09:52,150 INFO  L78                 Accepts]: Start accepts. Automaton has 186 states and 229 transitions. Word has length 97
[2023-11-06 23:09:52,150 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:09:52,151 INFO  L495      AbstractCegarLoop]: Abstraction has 186 states and 229 transitions.
[2023-11-06 23:09:52,151 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 6 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)
[2023-11-06 23:09:52,151 INFO  L276                IsEmpty]: Start isEmpty. Operand 186 states and 229 transitions.
[2023-11-06 23:09:52,153 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2023-11-06 23:09:52,153 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:09:52,153 INFO  L195           NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:09:52,170 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-06 23:09:52,361 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:09:52,363 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:09:52,363 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:09:52,364 INFO  L85        PathProgramCache]: Analyzing trace with hash -1653496147, now seen corresponding path program 1 times
[2023-11-06 23:09:52,364 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:09:52,364 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256081097]
[2023-11-06 23:09:52,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:09:52,364 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:09:52,392 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:09:52,392 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136221825]
[2023-11-06 23:09:52,392 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:09:52,393 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:09:52,393 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:09:52,394 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:09:52,412 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-06 23:09:52,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:09:52,535 INFO  L262         TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-11-06 23:09:52,540 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:09:52,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 85 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2023-11-06 23:09:52,846 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 23:09:53,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked.
[2023-11-06 23:09:53,156 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 23:09:53,157 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256081097]
[2023-11-06 23:09:53,157 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 23:09:53,157 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136221825]
[2023-11-06 23:09:53,157 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136221825] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-06 23:09:53,157 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-06 23:09:53,158 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15
[2023-11-06 23:09:53,158 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912307262]
[2023-11-06 23:09:53,158 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-06 23:09:53,159 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-06 23:09:53,159 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 23:09:53,160 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-06 23:09:53,161 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2023-11-06 23:09:53,161 INFO  L87              Difference]: Start difference. First operand 186 states and 229 transitions. Second operand  has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28)
[2023-11-06 23:09:54,809 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 23:09:54,810 INFO  L93              Difference]: Finished difference Result 766 states and 938 transitions.
[2023-11-06 23:09:54,810 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2023-11-06 23:09:54,811 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 97
[2023-11-06 23:09:54,811 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 23:09:54,818 INFO  L225             Difference]: With dead ends: 766
[2023-11-06 23:09:54,819 INFO  L226             Difference]: Without dead ends: 632
[2023-11-06 23:09:54,823 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332
[2023-11-06 23:09:54,826 INFO  L413           NwaCegarLoop]: 95 mSDtfsCounter, 516 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2023-11-06 23:09:54,827 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 629 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2023-11-06 23:09:54,829 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 632 states.
[2023-11-06 23:09:54,903 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 396.
[2023-11-06 23:09:54,905 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 396 states, 276 states have (on average 1.1521739130434783) internal successors, (318), 279 states have internal predecessors, (318), 79 states have call successors, (79), 40 states have call predecessors, (79), 40 states have return successors, (79), 76 states have call predecessors, (79), 79 states have call successors, (79)
[2023-11-06 23:09:54,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 476 transitions.
[2023-11-06 23:09:54,911 INFO  L78                 Accepts]: Start accepts. Automaton has 396 states and 476 transitions. Word has length 97
[2023-11-06 23:09:54,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 23:09:54,912 INFO  L495      AbstractCegarLoop]: Abstraction has 396 states and 476 transitions.
[2023-11-06 23:09:54,912 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28)
[2023-11-06 23:09:54,912 INFO  L276                IsEmpty]: Start isEmpty. Operand 396 states and 476 transitions.
[2023-11-06 23:09:54,914 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2023-11-06 23:09:54,915 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 23:09:54,915 INFO  L195           NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 23:09:54,929 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-06 23:09:55,121 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:09:55,122 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 23:09:55,122 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 23:09:55,122 INFO  L85        PathProgramCache]: Analyzing trace with hash -1395330709, now seen corresponding path program 1 times
[2023-11-06 23:09:55,122 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 23:09:55,122 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044001909]
[2023-11-06 23:09:55,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:09:55,122 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 23:09:55,179 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 23:09:55,182 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16411456]
[2023-11-06 23:09:55,183 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 23:09:55,183 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 23:09:55,183 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 23:09:55,184 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 23:09:55,207 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d39c27-8448-49f5-867c-5367976ef66d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-06 23:09:55,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 23:09:55,532 INFO  L262         TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 43 conjunts are in the unsatisfiable core
[2023-11-06 23:09:55,537 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 23:10:04,896 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 133 proven. 81 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked.
[2023-11-06 23:10:04,897 INFO  L327         TraceCheckSpWp]: Computing backward predicates...