./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX --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 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 16:10:08,571 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 16:10:08,689 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 16:10:08,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 16:10:08,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 16:10:08,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 16:10:08,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 16:10:08,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 16:10:08,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 16:10:08,769 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 16:10:08,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 16:10:08,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 16:10:08,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 16:10:08,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 16:10:08,777 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 16:10:08,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 16:10:08,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 16:10:08,778 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 16:10:08,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 16:10:08,779 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 16:10:08,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 16:10:08,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 16:10:08,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 16:10:08,786 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 16:10:08,786 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 16:10:08,787 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 16:10:08,787 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 16:10:08,788 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 16:10:08,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 16:10:08,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 16:10:08,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 16:10:08,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 16:10:08,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:10:08,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 16:10:08,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 16:10:08,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 16:10:08,793 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 16:10:08,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 16:10:08,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 16:10:08,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 16:10:08,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 16:10:08,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 16:10:08,796 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_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b
[2024-11-08 16:10:09,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 16:10:09,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 16:10:09,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 16:10:09,221 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 16:10:09,222 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 16:10:09,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c
Unable to find full path for "g++"
[2024-11-08 16:10:11,857 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 16:10:12,216 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 16:10:12,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c
[2024-11-08 16:10:12,233 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/data/66f560519/9ea61d88ac8f4f7897c657cfdc595e30/FLAGa599a45f2
[2024-11-08 16:10:12,467 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/data/66f560519/9ea61d88ac8f4f7897c657cfdc595e30
[2024-11-08 16:10:12,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 16:10:12,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 16:10:12,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 16:10:12,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 16:10:12,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 16:10:12,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:10:12" (1/1) ...
[2024-11-08 16:10:12,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750f0ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:12, skipping insertion in model container
[2024-11-08 16:10:12,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:10:12" (1/1) ...
[2024-11-08 16:10:12,547 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 16:10:12,816 WARN L250 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_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[1999,2012]
[2024-11-08 16:10:12,823 WARN L250 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_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[2393,2406]
[2024-11-08 16:10:12,890 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:10:12,903 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 16:10:12,919 WARN L250 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_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[1999,2012]
[2024-11-08 16:10:12,922 WARN L250 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_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[2393,2406]
[2024-11-08 16:10:12,980 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:10:13,004 INFO L204 MainTranslator]: Completed translation
[2024-11-08 16:10:13,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13 WrapperNode
[2024-11-08 16:10:13,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 16:10:13,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 16:10:13,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 16:10:13,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 16:10:13,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,072 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211
[2024-11-08 16:10:13,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 16:10:13,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 16:10:13,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 16:10:13,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 16:10:13,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,092 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,111 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-08 16:10:13,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,131 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 16:10:13,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 16:10:13,142 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 16:10:13,143 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 16:10:13,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (1/1) ...
[2024-11-08 16:10:13,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:10:13,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:10:13,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 16:10:13,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 16:10:13,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 16:10:13,271 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt
[2024-11-08 16:10:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt
[2024-11-08 16:10:13,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 16:10:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 16:10:13,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 16:10:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-08 16:10:13,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-08 16:10:13,422 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 16:10:13,426 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 16:10:14,249 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live.
[2024-11-08 16:10:14,250 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 16:10:14,281 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 16:10:14,281 INFO L316 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-08 16:10:14,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:10:14 BoogieIcfgContainer
[2024-11-08 16:10:14,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 16:10:14,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 16:10:14,286 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 16:10:14,291 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 16:10:14,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:10:12" (1/3) ...
[2024-11-08 16:10:14,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f0a830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:10:14, skipping insertion in model container
[2024-11-08 16:10:14,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:13" (2/3) ...
[2024-11-08 16:10:14,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f0a830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:10:14, skipping insertion in model container
[2024-11-08 16:10:14,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:10:14" (3/3) ...
[2024-11-08 16:10:14,295 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_1-2a.c.cil.c
[2024-11-08 16:10:14,322 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 16:10:14,322 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2024-11-08 16:10:14,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 16:10:14,422 INFO L333 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, 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;@506df0ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 16:10:14,422 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-11-08 16:10:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 92 states have (on average 1.576086956521739) internal successors, (145), 96 states have internal predecessors, (145), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-08 16:10:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-08 16:10:14,445 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:10:14,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:10:14,448 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:10:14,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:10:14,457 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times
[2024-11-08 16:10:14,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:10:14,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652279508]
[2024-11-08 16:10:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:10:14,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:10:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 16:10:14,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-08 16:10:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 16:10:14,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-08 16:10:14,700 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-08 16:10:14,702 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining)
[2024-11-08 16:10:14,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2024-11-08 16:10:14,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 16:10:14,711 INFO L407 BasicCegarLoop]: Path program histogram: [1]
[2024-11-08 16:10:14,732 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-08 16:10:14,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:10:14 BoogieIcfgContainer
[2024-11-08 16:10:14,739 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-08 16:10:14,740 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-08 16:10:14,741 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-08 16:10:14,741 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-08 16:10:14,742 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:10:14" (3/4) ...
[2024-11-08 16:10:14,747 INFO L145 WitnessPrinter]: No result that supports witness generation found
[2024-11-08 16:10:14,749 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-08 16:10:14,751 INFO L158 Benchmark]: Toolchain (without parser) took 2277.37ms. Allocated memory is still 146.8MB. Free memory was 115.9MB in the beginning and 94.3MB in the end (delta: 21.6MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB.
[2024-11-08 16:10:14,752 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 146.8MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 16:10:14,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 530.73ms. Allocated memory is still 146.8MB. Free memory was 115.6MB in the beginning and 98.7MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-08 16:10:14,754 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.77ms. Allocated memory is still 146.8MB. Free memory was 98.7MB in the beginning and 96.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 16:10:14,755 INFO L158 Benchmark]: Boogie Preprocessor took 67.26ms. Allocated memory is still 146.8MB. Free memory was 96.5MB in the beginning and 93.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 16:10:14,757 INFO L158 Benchmark]: RCFGBuilder took 1140.30ms. Allocated memory is still 146.8MB. Free memory was 93.4MB in the beginning and 110.0MB in the end (delta: -16.6MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB.
[2024-11-08 16:10:14,759 INFO L158 Benchmark]: TraceAbstraction took 454.14ms. Allocated memory is still 146.8MB. Free memory was 109.0MB in the beginning and 94.9MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-08 16:10:14,759 INFO L158 Benchmark]: Witness Printer took 8.48ms. Allocated memory is still 146.8MB. Free memory was 94.9MB in the beginning and 94.3MB in the end (delta: 570.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 16:10:14,766 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.42ms. Allocated memory is still 146.8MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 530.73ms. Allocated memory is still 146.8MB. Free memory was 115.6MB in the beginning and 98.7MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 66.77ms. Allocated memory is still 146.8MB. Free memory was 98.7MB in the beginning and 96.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 67.26ms. Allocated memory is still 146.8MB. Free memory was 96.5MB in the beginning and 93.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 1140.30ms. Allocated memory is still 146.8MB. Free memory was 93.4MB in the beginning and 110.0MB in the end (delta: -16.6MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 454.14ms. Allocated memory is still 146.8MB. Free memory was 109.0MB in the beginning and 94.9MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Witness Printer took 8.48ms. Allocated memory is still 146.8MB. Free memory was 94.9MB in the beginning and 94.3MB in the end (delta: 570.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45.
Possible FailurePath:
[L403] COND TRUE __VERIFIER_nondet_int()
[L404] CALL main1()
[L39] float IN = __VERIFIER_nondet_float();
[L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f)
[L34] COND FALSE !(!cond)
[L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f)
[L42] float x = IN;
[L44-L45] float result =
1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x;
[L47] COND TRUE !(result >= 0.0f && result < 1.39844f)
[L48] reach_error()
- UnprovableResult [Line: 61]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 105 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-11-08 16:10:14,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX --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 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 16:10:18,015 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 16:10:18,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-08 16:10:18,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 16:10:18,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 16:10:18,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 16:10:18,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 16:10:18,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 16:10:18,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 16:10:18,225 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 16:10:18,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 16:10:18,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 16:10:18,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 16:10:18,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 16:10:18,228 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 16:10:18,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 16:10:18,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 16:10:18,233 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 16:10:18,233 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 16:10:18,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 16:10:18,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 16:10:18,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 16:10:18,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 16:10:18,242 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 16:10:18,243 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-08 16:10:18,243 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 16:10:18,244 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-08 16:10:18,244 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 16:10:18,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 16:10:18,245 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 16:10:18,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 16:10:18,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 16:10:18,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 16:10:18,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 16:10:18,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:10:18,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 16:10:18,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 16:10:18,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 16:10:18,253 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-08 16:10:18,253 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-08 16:10:18,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 16:10:18,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 16:10:18,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 16:10:18,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 16:10:18,256 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_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b
[2024-11-08 16:10:18,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 16:10:18,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 16:10:18,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 16:10:18,873 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 16:10:18,874 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 16:10:18,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c
Unable to find full path for "g++"
[2024-11-08 16:10:21,401 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 16:10:21,781 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 16:10:21,782 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c
[2024-11-08 16:10:21,803 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/data/56d57186e/cef0ed9d2b394d19beb8565347bb251f/FLAGe543f27bb
[2024-11-08 16:10:22,032 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/data/56d57186e/cef0ed9d2b394d19beb8565347bb251f
[2024-11-08 16:10:22,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 16:10:22,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 16:10:22,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 16:10:22,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 16:10:22,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 16:10:22,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403d020e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22, skipping insertion in model container
[2024-11-08 16:10:22,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,096 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 16:10:22,371 WARN L250 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_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[1999,2012]
[2024-11-08 16:10:22,384 WARN L250 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_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[2393,2406]
[2024-11-08 16:10:22,506 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:10:22,558 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 16:10:22,620 WARN L250 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_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[1999,2012]
[2024-11-08 16:10:22,628 WARN L250 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_d55c5185-562b-4b60-95d2-71c605566a68/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c[2393,2406]
[2024-11-08 16:10:22,686 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:10:22,712 INFO L204 MainTranslator]: Completed translation
[2024-11-08 16:10:22,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22 WrapperNode
[2024-11-08 16:10:22,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 16:10:22,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 16:10:22,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 16:10:22,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 16:10:22,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,800 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168
[2024-11-08 16:10:22,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 16:10:22,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 16:10:22,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 16:10:22,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 16:10:22,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,863 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-08 16:10:22,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,894 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 16:10:22,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 16:10:22,921 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 16:10:22,921 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 16:10:22,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (1/1) ...
[2024-11-08 16:10:22,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:10:22,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:10:22,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 16:10:22,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 16:10:23,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 16:10:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-08 16:10:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt
[2024-11-08 16:10:23,031 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt
[2024-11-08 16:10:23,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 16:10:23,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 16:10:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-08 16:10:23,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-08 16:10:23,190 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 16:10:23,194 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 16:10:28,111 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live.
[2024-11-08 16:10:28,112 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 16:10:28,144 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 16:10:28,144 INFO L316 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-08 16:10:28,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:10:28 BoogieIcfgContainer
[2024-11-08 16:10:28,145 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 16:10:28,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 16:10:28,148 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 16:10:28,153 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 16:10:28,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:10:22" (1/3) ...
[2024-11-08 16:10:28,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f048843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:10:28, skipping insertion in model container
[2024-11-08 16:10:28,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:10:22" (2/3) ...
[2024-11-08 16:10:28,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f048843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:10:28, skipping insertion in model container
[2024-11-08 16:10:28,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:10:28" (3/3) ...
[2024-11-08 16:10:28,157 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_1-2a.c.cil.c
[2024-11-08 16:10:28,182 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 16:10:28,183 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2024-11-08 16:10:28,283 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 16:10:28,294 INFO L333 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, 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;@52ea8f84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 16:10:28,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-11-08 16:10:28,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-08 16:10:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-08 16:10:28,309 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:10:28,311 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:10:28,311 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:10:28,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:10:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1912677092, now seen corresponding path program 1 times
[2024-11-08 16:10:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:10:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589599186]
[2024-11-08 16:10:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:10:28,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-08 16:10:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat
[2024-11-08 16:10:28,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-08 16:10:28,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2024-11-08 16:10:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:10:28,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-08 16:10:28,975 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:10:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:10:28,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:10:28,994 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:10:28,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589599186]
[2024-11-08 16:10:28,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589599186] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:10:28,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:10:28,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:10:28,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313273424]
[2024-11-08 16:10:29,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:10:29,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-08 16:10:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:10:29,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-08 16:10:29,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 16:10:29,041 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:10:29,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:10:29,097 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions.
[2024-11-08 16:10:29,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-08 16:10:29,100 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2024-11-08 16:10:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:10:29,112 INFO L225 Difference]: With dead ends: 157
[2024-11-08 16:10:29,113 INFO L226 Difference]: Without dead ends: 74
[2024-11-08 16:10:29,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 16:10:29,122 INFO L432 NwaCegarLoop]: 116 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, 116 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
[2024-11-08 16:10:29,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 16:10:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2024-11-08 16:10:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74.
[2024-11-08 16:10:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-08 16:10:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions.
[2024-11-08 16:10:29,180 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7
[2024-11-08 16:10:29,180 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:10:29,181 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions.
[2024-11-08 16:10:29,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:10:29,181 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions.
[2024-11-08 16:10:29,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-08 16:10:29,182 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:10:29,182 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:10:29,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2024-11-08 16:10:29,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-08 16:10:29,384 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:10:29,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:10:29,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1912736674, now seen corresponding path program 1 times
[2024-11-08 16:10:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:10:29,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877044749]
[2024-11-08 16:10:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:10:29,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-08 16:10:29,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat
[2024-11-08 16:10:29,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-08 16:10:29,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2024-11-08 16:21:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:21:45,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 16:21:45,185 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:21:54,010 WARN L286 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 16:22:02,133 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 16:22:10,387 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 16:22:14,478 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false
[2024-11-08 16:22:30,888 WARN L286 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 16:22:38,639 WARN L286 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 16:22:46,788 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 16:22:59,098 WARN L286 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 16:23:07,364 WARN L286 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 16:23:15,487 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 16:23:19,612 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false
[2024-11-08 16:23:23,671 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true
[2024-11-08 16:23:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:23:23,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:23:23,672 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:23,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877044749]
[2024-11-08 16:23:23,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877044749] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:23:23,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:23:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 16:23:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382411590]
[2024-11-08 16:23:23,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:23:23,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:23:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:23:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42
[2024-11-08 16:23:23,676 INFO L87 Difference]: Start difference. First operand 74 states and 107 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:23:27,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 16:23:31,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 16:23:35,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 16:23:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:23:36,531 INFO L93 Difference]: Finished difference Result 74 states and 107 transitions.
[2024-11-08 16:23:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:23:36,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2024-11-08 16:23:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:23:36,534 INFO L225 Difference]: With dead ends: 74
[2024-11-08 16:23:36,535 INFO L226 Difference]: Without dead ends: 69
[2024-11-08 16:23:36,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42
[2024-11-08 16:23:36,537 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 101 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time
[2024-11-08 16:23:36,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 274 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 3 Unknown, 214 Unchecked, 12.8s Time]
[2024-11-08 16:23:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2024-11-08 16:23:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2024-11-08 16:23:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.5) internal successors, (87), 60 states have internal predecessors, (87), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-08 16:23:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 102 transitions.
[2024-11-08 16:23:36,550 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 102 transitions. Word has length 7
[2024-11-08 16:23:36,550 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:23:36,550 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 102 transitions.
[2024-11-08 16:23:36,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:23:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 102 transitions.
[2024-11-08 16:23:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2024-11-08 16:23:36,552 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:23:36,552 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:23:36,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2024-11-08 16:23:36,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-08 16:23:36,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:23:36,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:23:36,754 INFO L85 PathProgramCache]: Analyzing trace with hash -549432071, now seen corresponding path program 1 times
[2024-11-08 16:23:36,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:23:36,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029140105]
[2024-11-08 16:23:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:23:36,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:36,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:23:36,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:23:36,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 16:23:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:23:36,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 16:23:36,863 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:23:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:23:37,704 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:23:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:23:38,309 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:38,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029140105]
[2024-11-08 16:23:38,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029140105] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:23:38,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:23:38,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2024-11-08 16:23:38,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479246657]
[2024-11-08 16:23:38,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:23:38,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 16:23:38,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:38,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 16:23:38,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-08 16:23:38,314 INFO L87 Difference]: Start difference. First operand 69 states and 102 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:23:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:23:39,991 INFO L93 Difference]: Finished difference Result 146 states and 224 transitions.
[2024-11-08 16:23:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 16:23:39,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33
[2024-11-08 16:23:39,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:23:39,997 INFO L225 Difference]: With dead ends: 146
[2024-11-08 16:23:39,997 INFO L226 Difference]: Without dead ends: 101
[2024-11-08 16:23:39,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-08 16:23:39,999 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 31 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:23:40,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 597 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2024-11-08 16:23:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2024-11-08 16:23:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99.
[2024-11-08 16:23:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 87 states have internal predecessors, (123), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14)
[2024-11-08 16:23:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 148 transitions.
[2024-11-08 16:23:40,018 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 148 transitions. Word has length 33
[2024-11-08 16:23:40,018 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:23:40,018 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 148 transitions.
[2024-11-08 16:23:40,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:23:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 148 transitions.
[2024-11-08 16:23:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-08 16:23:40,020 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:23:40,020 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:23:40,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-08 16:23:40,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:40,225 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:23:40,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:23:40,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1528596169, now seen corresponding path program 1 times
[2024-11-08 16:23:40,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:23:40,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287493231]
[2024-11-08 16:23:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:23:40,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:23:40,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:23:40,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 16:23:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:23:40,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 16:23:40,306 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:23:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-08 16:23:41,718 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:23:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:23:42,614 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:42,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287493231]
[2024-11-08 16:23:42,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287493231] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:23:42,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:23:42,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 12
[2024-11-08 16:23:42,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379486254]
[2024-11-08 16:23:42,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:23:42,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 16:23:42,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:42,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 16:23:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:23:42,620 INFO L87 Difference]: Start difference. First operand 99 states and 148 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 16:23:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:23:45,576 INFO L93 Difference]: Finished difference Result 231 states and 366 transitions.
[2024-11-08 16:23:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 16:23:45,578 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37
[2024-11-08 16:23:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:23:45,580 INFO L225 Difference]: With dead ends: 231
[2024-11-08 16:23:45,584 INFO L226 Difference]: Without dead ends: 165
[2024-11-08 16:23:45,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:23:45,589 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 60 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time
[2024-11-08 16:23:45,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1050 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time]
[2024-11-08 16:23:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2024-11-08 16:23:45,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 127.
[2024-11-08 16:23:45,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 106 states have internal predecessors, (146), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (33), 20 states have call predecessors, (33), 15 states have call successors, (33)
[2024-11-08 16:23:45,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 195 transitions.
[2024-11-08 16:23:45,642 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 195 transitions. Word has length 37
[2024-11-08 16:23:45,643 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:23:45,643 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 195 transitions.
[2024-11-08 16:23:45,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 16:23:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 195 transitions.
[2024-11-08 16:23:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 16:23:45,649 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:23:45,650 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:23:45,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 16:23:45,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:45,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:23:45,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:23:45,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1466896535, now seen corresponding path program 1 times
[2024-11-08 16:23:45,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:23:45,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718278655]
[2024-11-08 16:23:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:23:45,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:45,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:23:45,853 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:23:45,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 16:23:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:23:45,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-08 16:23:45,924 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:23:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-08 16:23:47,862 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:23:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:23:49,153 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:49,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718278655]
[2024-11-08 16:23:49,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718278655] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:23:49,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:23:49,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14
[2024-11-08 16:23:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761920979]
[2024-11-08 16:23:49,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:23:49,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:23:49,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:23:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182
[2024-11-08 16:23:49,157 INFO L87 Difference]: Start difference. First operand 127 states and 195 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:23:51,291 INFO L93 Difference]: Finished difference Result 257 states and 388 transitions.
[2024-11-08 16:23:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:23:51,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41
[2024-11-08 16:23:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:23:51,296 INFO L225 Difference]: With dead ends: 257
[2024-11-08 16:23:51,297 INFO L226 Difference]: Without dead ends: 202
[2024-11-08 16:23:51,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210
[2024-11-08 16:23:51,304 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 39 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2024-11-08 16:23:51,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 437 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2024-11-08 16:23:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states.
[2024-11-08 16:23:51,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 160.
[2024-11-08 16:23:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 139 states have (on average 1.3453237410071943) internal successors, (187), 133 states have internal predecessors, (187), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (33), 26 states have call predecessors, (33), 15 states have call successors, (33)
[2024-11-08 16:23:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 236 transitions.
[2024-11-08 16:23:51,350 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 236 transitions. Word has length 41
[2024-11-08 16:23:51,350 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:23:51,350 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 236 transitions.
[2024-11-08 16:23:51,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:51,351 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 236 transitions.
[2024-11-08 16:23:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 16:23:51,357 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:23:51,358 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:23:51,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 16:23:51,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:51,559 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:23:51,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:23:51,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1409638233, now seen corresponding path program 1 times
[2024-11-08 16:23:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:23:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260578467]
[2024-11-08 16:23:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:23:51,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:51,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:23:51,562 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:23:51,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 16:23:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:23:51,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 16:23:51,637 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:23:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:23:52,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:23:52,369 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:52,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260578467]
[2024-11-08 16:23:52,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260578467] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:23:52,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:23:52,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-08 16:23:52,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39100183]
[2024-11-08 16:23:52,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:23:52,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:23:52,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:52,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:23:52,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:23:52,372 INFO L87 Difference]: Start difference. First operand 160 states and 236 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:53,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:23:53,482 INFO L93 Difference]: Finished difference Result 259 states and 386 transitions.
[2024-11-08 16:23:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:23:53,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41
[2024-11-08 16:23:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:23:53,485 INFO L225 Difference]: With dead ends: 259
[2024-11-08 16:23:53,485 INFO L226 Difference]: Without dead ends: 198
[2024-11-08 16:23:53,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-08 16:23:53,487 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 33 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-11-08 16:23:53,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 517 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-11-08 16:23:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states.
[2024-11-08 16:23:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196.
[2024-11-08 16:23:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 171 states have (on average 1.3508771929824561) internal successors, (231), 167 states have internal predecessors, (231), 20 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (37), 30 states have call predecessors, (37), 19 states have call successors, (37)
[2024-11-08 16:23:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions.
[2024-11-08 16:23:53,509 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 41
[2024-11-08 16:23:53,510 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:23:53,510 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions.
[2024-11-08 16:23:53,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:53,511 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions.
[2024-11-08 16:23:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-08 16:23:53,513 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:23:53,513 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:23:53,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-08 16:23:53,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:53,718 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:23:53,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:23:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 728518674, now seen corresponding path program 1 times
[2024-11-08 16:23:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:23:53,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954817616]
[2024-11-08 16:23:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:23:53,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:53,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:23:53,721 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:23:53,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 16:23:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:23:53,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:23:53,784 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:23:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:23:54,106 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:23:54,107 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954817616]
[2024-11-08 16:23:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954817616] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:23:54,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:23:54,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:23:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686201237]
[2024-11-08 16:23:54,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:23:54,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:23:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:23:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:23:54,110 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:23:54,281 INFO L93 Difference]: Finished difference Result 317 states and 467 transitions.
[2024-11-08 16:23:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:23:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44
[2024-11-08 16:23:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:23:54,287 INFO L225 Difference]: With dead ends: 317
[2024-11-08 16:23:54,288 INFO L226 Difference]: Without dead ends: 251
[2024-11-08 16:23:54,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:23:54,289 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 15 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:23:54,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 344 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:23:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states.
[2024-11-08 16:23:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251.
[2024-11-08 16:23:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 224 states have (on average 1.3214285714285714) internal successors, (296), 220 states have internal predecessors, (296), 22 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (39), 32 states have call predecessors, (39), 21 states have call successors, (39)
[2024-11-08 16:23:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions.
[2024-11-08 16:23:54,311 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 44
[2024-11-08 16:23:54,311 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:23:54,311 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions.
[2024-11-08 16:23:54,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:54,312 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions.
[2024-11-08 16:23:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-08 16:23:54,314 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:23:54,314 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:23:54,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-08 16:23:54,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:54,515 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:23:54,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:23:54,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1141622334, now seen corresponding path program 1 times
[2024-11-08 16:23:54,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:23:54,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814026285]
[2024-11-08 16:23:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:23:54,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:54,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:23:54,524 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:23:54,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 16:23:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:23:54,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:23:54,592 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:23:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-11-08 16:23:54,874 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:23:54,874 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814026285]
[2024-11-08 16:23:54,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814026285] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:23:54,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:23:54,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:23:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083587245]
[2024-11-08 16:23:54,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:23:54,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:23:54,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:54,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:23:54,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:23:54,878 INFO L87 Difference]: Start difference. First operand 251 states and 357 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:23:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:23:55,295 INFO L93 Difference]: Finished difference Result 437 states and 618 transitions.
[2024-11-08 16:23:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 16:23:55,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44
[2024-11-08 16:23:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:23:55,298 INFO L225 Difference]: With dead ends: 437
[2024-11-08 16:23:55,298 INFO L226 Difference]: Without dead ends: 190
[2024-11-08 16:23:55,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 16:23:55,303 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 26 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:23:55,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 261 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 16:23:55,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states.
[2024-11-08 16:23:55,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178.
[2024-11-08 16:23:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 158 states have (on average 1.2848101265822784) internal successors, (203), 159 states have internal predecessors, (203), 14 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (25), 18 states have call predecessors, (25), 13 states have call successors, (25)
[2024-11-08 16:23:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 242 transitions.
[2024-11-08 16:23:55,333 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 242 transitions. Word has length 44
[2024-11-08 16:23:55,333 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:23:55,333 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 242 transitions.
[2024-11-08 16:23:55,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:23:55,333 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 242 transitions.
[2024-11-08 16:23:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 16:23:55,339 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:23:55,340 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:23:55,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-08 16:23:55,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:55,541 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:23:55,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:23:55,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1015579738, now seen corresponding path program 1 times
[2024-11-08 16:23:55,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:23:55,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212540337]
[2024-11-08 16:23:55,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:23:55,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:55,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:23:55,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:23:55,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 16:23:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:23:55,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:23:55,611 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:23:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:23:55,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:23:55,759 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:55,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212540337]
[2024-11-08 16:23:55,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212540337] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:23:55,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:23:55,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:23:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284622975]
[2024-11-08 16:23:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:23:55,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:23:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:23:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:23:55,762 INFO L87 Difference]: Start difference. First operand 178 states and 242 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:23:55,912 INFO L93 Difference]: Finished difference Result 189 states and 254 transitions.
[2024-11-08 16:23:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:23:55,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 16:23:55,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:23:55,915 INFO L225 Difference]: With dead ends: 189
[2024-11-08 16:23:55,915 INFO L226 Difference]: Without dead ends: 182
[2024-11-08 16:23:55,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:23:55,917 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:23:55,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:23:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2024-11-08 16:23:55,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182.
[2024-11-08 16:23:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 162 states have (on average 1.2777777777777777) internal successors, (207), 163 states have internal predecessors, (207), 14 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (25), 18 states have call predecessors, (25), 13 states have call successors, (25)
[2024-11-08 16:23:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 246 transitions.
[2024-11-08 16:23:55,943 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 246 transitions. Word has length 45
[2024-11-08 16:23:55,943 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:23:55,944 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 246 transitions.
[2024-11-08 16:23:55,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 246 transitions.
[2024-11-08 16:23:55,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 16:23:55,945 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:23:55,946 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:23:55,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-08 16:23:56,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:56,147 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:23:56,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:23:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1504380196, now seen corresponding path program 1 times
[2024-11-08 16:23:56,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:23:56,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424486092]
[2024-11-08 16:23:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:23:56,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:56,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:23:56,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:23:56,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 16:23:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:23:56,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 16:23:56,222 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:23:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:23:56,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:23:56,478 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:56,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424486092]
[2024-11-08 16:23:56,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424486092] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:23:56,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:23:56,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 16:23:56,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025297315]
[2024-11-08 16:23:56,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:23:56,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 16:23:56,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 16:23:56,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 16:23:56,481 INFO L87 Difference]: Start difference. First operand 182 states and 246 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:23:56,749 INFO L93 Difference]: Finished difference Result 189 states and 252 transitions.
[2024-11-08 16:23:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 16:23:56,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 16:23:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:23:56,751 INFO L225 Difference]: With dead ends: 189
[2024-11-08 16:23:56,752 INFO L226 Difference]: Without dead ends: 182
[2024-11-08 16:23:56,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:23:56,753 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 3 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:23:56,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 383 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:23:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2024-11-08 16:23:56,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178.
[2024-11-08 16:23:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 158 states have (on average 1.2658227848101267) internal successors, (200), 159 states have internal predecessors, (200), 14 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (25), 18 states have call predecessors, (25), 13 states have call successors, (25)
[2024-11-08 16:23:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 239 transitions.
[2024-11-08 16:23:56,767 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 239 transitions. Word has length 45
[2024-11-08 16:23:56,768 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:23:56,768 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 239 transitions.
[2024-11-08 16:23:56,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:23:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 239 transitions.
[2024-11-08 16:23:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 16:23:56,770 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:23:56,770 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:23:56,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-11-08 16:23:56,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:56,971 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:23:56,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:23:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2051114471, now seen corresponding path program 2 times
[2024-11-08 16:23:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:23:56,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950420483]
[2024-11-08 16:23:56,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 16:23:56,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:23:56,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:23:56,975 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:23:56,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-08 16:23:57,053 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-08 16:23:57,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 16:23:57,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 16:23:57,061 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:23:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 16:23:58,565 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:23:58,566 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:23:58,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950420483]
[2024-11-08 16:23:58,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950420483] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:23:58,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:23:58,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 16:23:58,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276821872]
[2024-11-08 16:23:58,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:23:58,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 16:23:58,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:23:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 16:23:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2024-11-08 16:23:58,569 INFO L87 Difference]: Start difference. First operand 178 states and 239 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:01,811 INFO L93 Difference]: Finished difference Result 304 states and 411 transitions.
[2024-11-08 16:24:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 16:24:01,812 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 16:24:01,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:01,814 INFO L225 Difference]: With dead ends: 304
[2024-11-08 16:24:01,814 INFO L226 Difference]: Without dead ends: 265
[2024-11-08 16:24:01,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240
[2024-11-08 16:24:01,815 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 57 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:01,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1184 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time]
[2024-11-08 16:24:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states.
[2024-11-08 16:24:01,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261.
[2024-11-08 16:24:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 234 states have (on average 1.2777777777777777) internal successors, (299), 233 states have internal predecessors, (299), 20 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (31), 27 states have call predecessors, (31), 19 states have call successors, (31)
[2024-11-08 16:24:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 350 transitions.
[2024-11-08 16:24:01,844 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 350 transitions. Word has length 45
[2024-11-08 16:24:01,846 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:01,846 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 350 transitions.
[2024-11-08 16:24:01,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 350 transitions.
[2024-11-08 16:24:01,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 16:24:01,849 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:01,849 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:01,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-08 16:24:02,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:02,050 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:02,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:02,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1132557739, now seen corresponding path program 1 times
[2024-11-08 16:24:02,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:02,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55946534]
[2024-11-08 16:24:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:02,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:02,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:02,053 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:02,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-08 16:24:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:02,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:02,117 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 16:24:02,917 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:24:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 16:24:03,467 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55946534]
[2024-11-08 16:24:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55946534] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:24:03,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:24:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2024-11-08 16:24:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618352630]
[2024-11-08 16:24:03,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:24:03,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:24:03,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:03,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:24:03,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:24:03,469 INFO L87 Difference]: Start difference. First operand 261 states and 350 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:24:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:04,822 INFO L93 Difference]: Finished difference Result 438 states and 613 transitions.
[2024-11-08 16:24:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:24:04,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45
[2024-11-08 16:24:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:04,826 INFO L225 Difference]: With dead ends: 438
[2024-11-08 16:24:04,826 INFO L226 Difference]: Without dead ends: 352
[2024-11-08 16:24:04,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-08 16:24:04,828 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 46 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:04,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 721 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-11-08 16:24:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states.
[2024-11-08 16:24:04,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 348.
[2024-11-08 16:24:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 311 states have (on average 1.2990353697749195) internal successors, (404), 313 states have internal predecessors, (404), 30 states have call successors, (30), 3 states have call predecessors, (30), 6 states have return successors, (41), 37 states have call predecessors, (41), 29 states have call successors, (41)
[2024-11-08 16:24:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 475 transitions.
[2024-11-08 16:24:04,858 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 475 transitions. Word has length 45
[2024-11-08 16:24:04,858 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:04,859 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 475 transitions.
[2024-11-08 16:24:04,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:24:04,859 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 475 transitions.
[2024-11-08 16:24:04,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 16:24:04,860 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:04,860 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:04,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2024-11-08 16:24:05,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:05,061 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:05,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:05,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1075299437, now seen corresponding path program 1 times
[2024-11-08 16:24:05,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:05,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337474017]
[2024-11-08 16:24:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:05,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:05,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:05,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:05,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-08 16:24:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:05,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:05,134 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 16:24:06,611 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:24:09,262 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:09,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337474017]
[2024-11-08 16:24:09,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337474017] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:24:09,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [101757357]
[2024-11-08 16:24:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:09,263 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 16:24:09,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 16:24:09,265 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 16:24:09,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process
[2024-11-08 16:24:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:09,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:09,453 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 16:24:09,986 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:24:10,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [101757357] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:24:10,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:24:10,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2024-11-08 16:24:10,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682592254]
[2024-11-08 16:24:10,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:24:10,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 16:24:10,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:10,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 16:24:10,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210
[2024-11-08 16:24:10,447 INFO L87 Difference]: Start difference. First operand 348 states and 475 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:24:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:13,048 INFO L93 Difference]: Finished difference Result 362 states and 487 transitions.
[2024-11-08 16:24:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-08 16:24:13,049 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45
[2024-11-08 16:24:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:13,052 INFO L225 Difference]: With dead ends: 362
[2024-11-08 16:24:13,052 INFO L226 Difference]: Without dead ends: 360
[2024-11-08 16:24:13,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306
[2024-11-08 16:24:13,054 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 48 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:13,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 920 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2024-11-08 16:24:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states.
[2024-11-08 16:24:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 356.
[2024-11-08 16:24:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 317 states have (on average 1.2933753943217665) internal successors, (410), 319 states have internal predecessors, (410), 30 states have call successors, (30), 5 states have call predecessors, (30), 8 states have return successors, (41), 37 states have call predecessors, (41), 29 states have call successors, (41)
[2024-11-08 16:24:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 481 transitions.
[2024-11-08 16:24:13,078 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 481 transitions. Word has length 45
[2024-11-08 16:24:13,078 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:13,078 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 481 transitions.
[2024-11-08 16:24:13,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:24:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 481 transitions.
[2024-11-08 16:24:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 16:24:13,080 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:13,081 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:13,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0
[2024-11-08 16:24:13,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2024-11-08 16:24:13,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:13,484 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:13,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1246282599, now seen corresponding path program 1 times
[2024-11-08 16:24:13,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:13,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603404682]
[2024-11-08 16:24:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:13,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:13,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:13,495 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:13,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-08 16:24:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:13,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:13,595 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 16:24:14,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:14,415 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:14,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603404682]
[2024-11-08 16:24:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603404682] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:14,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:14,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 16:24:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504602932]
[2024-11-08 16:24:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:14,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:24:14,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:24:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:24:14,418 INFO L87 Difference]: Start difference. First operand 356 states and 481 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:15,471 INFO L93 Difference]: Finished difference Result 377 states and 506 transitions.
[2024-11-08 16:24:15,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:24:15,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 16:24:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:15,477 INFO L225 Difference]: With dead ends: 377
[2024-11-08 16:24:15,478 INFO L226 Difference]: Without dead ends: 375
[2024-11-08 16:24:15,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:24:15,479 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 3 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:15,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 475 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-08 16:24:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states.
[2024-11-08 16:24:15,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 364.
[2024-11-08 16:24:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 322 states have (on average 1.295031055900621) internal successors, (417), 326 states have internal predecessors, (417), 32 states have call successors, (32), 6 states have call predecessors, (32), 9 states have return successors, (43), 37 states have call predecessors, (43), 31 states have call successors, (43)
[2024-11-08 16:24:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 492 transitions.
[2024-11-08 16:24:15,507 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 492 transitions. Word has length 45
[2024-11-08 16:24:15,508 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:15,508 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 492 transitions.
[2024-11-08 16:24:15,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 492 transitions.
[2024-11-08 16:24:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 16:24:15,510 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:15,510 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:15,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-11-08 16:24:15,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:15,714 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:15,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:15,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1189024297, now seen corresponding path program 1 times
[2024-11-08 16:24:15,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:15,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712386263]
[2024-11-08 16:24:15,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:15,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:15,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:15,718 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:15,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-08 16:24:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:15,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:15,815 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 16:24:16,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:16,483 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712386263]
[2024-11-08 16:24:16,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712386263] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:16,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:16,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 16:24:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81773129]
[2024-11-08 16:24:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:16,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:24:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:24:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:24:16,486 INFO L87 Difference]: Start difference. First operand 364 states and 492 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:17,608 INFO L93 Difference]: Finished difference Result 370 states and 497 transitions.
[2024-11-08 16:24:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:24:17,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 16:24:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:17,613 INFO L225 Difference]: With dead ends: 370
[2024-11-08 16:24:17,613 INFO L226 Difference]: Without dead ends: 368
[2024-11-08 16:24:17,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:24:17,617 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:17,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 455 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-08 16:24:17,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states.
[2024-11-08 16:24:17,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 360.
[2024-11-08 16:24:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 320 states have (on average 1.290625) internal successors, (413), 322 states have internal predecessors, (413), 30 states have call successors, (30), 6 states have call predecessors, (30), 9 states have return successors, (41), 37 states have call predecessors, (41), 29 states have call successors, (41)
[2024-11-08 16:24:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 484 transitions.
[2024-11-08 16:24:17,654 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 484 transitions. Word has length 45
[2024-11-08 16:24:17,655 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:17,655 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 484 transitions.
[2024-11-08 16:24:17,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:17,656 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 484 transitions.
[2024-11-08 16:24:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2024-11-08 16:24:17,657 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:17,658 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:17,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-11-08 16:24:17,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:17,858 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:17,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:17,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1891124004, now seen corresponding path program 1 times
[2024-11-08 16:24:17,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:17,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699220542]
[2024-11-08 16:24:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:17,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:17,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:17,861 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:17,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-08 16:24:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:17,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:17,932 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:24:18,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:18,193 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:18,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699220542]
[2024-11-08 16:24:18,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699220542] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:18,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:18,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:24:18,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339576752]
[2024-11-08 16:24:18,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:18,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:24:18,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:18,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:24:18,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:24:18,195 INFO L87 Difference]: Start difference. First operand 360 states and 484 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:18,377 INFO L93 Difference]: Finished difference Result 592 states and 817 transitions.
[2024-11-08 16:24:18,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:24:18,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46
[2024-11-08 16:24:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:18,381 INFO L225 Difference]: With dead ends: 592
[2024-11-08 16:24:18,381 INFO L226 Difference]: Without dead ends: 500
[2024-11-08 16:24:18,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:24:18,383 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 28 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:18,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 289 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:24:18,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states.
[2024-11-08 16:24:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 413.
[2024-11-08 16:24:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 369 states have (on average 1.2899728997289972) internal successors, (476), 369 states have internal predecessors, (476), 34 states have call successors, (34), 6 states have call predecessors, (34), 9 states have return successors, (45), 41 states have call predecessors, (45), 33 states have call successors, (45)
[2024-11-08 16:24:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 555 transitions.
[2024-11-08 16:24:18,415 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 555 transitions. Word has length 46
[2024-11-08 16:24:18,415 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:18,415 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 555 transitions.
[2024-11-08 16:24:18,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 555 transitions.
[2024-11-08 16:24:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2024-11-08 16:24:18,417 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:18,417 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:18,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-11-08 16:24:18,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:18,622 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:18,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:18,623 INFO L85 PathProgramCache]: Analyzing trace with hash 807338949, now seen corresponding path program 1 times
[2024-11-08 16:24:18,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:18,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418014779]
[2024-11-08 16:24:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:18,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:18,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:18,626 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:18,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-08 16:24:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:18,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:18,703 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:24:20,606 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:24:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:24:21,748 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418014779]
[2024-11-08 16:24:21,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418014779] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:24:21,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:24:21,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14
[2024-11-08 16:24:21,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764303317]
[2024-11-08 16:24:21,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:21,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:24:21,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:24:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2024-11-08 16:24:21,751 INFO L87 Difference]: Start difference. First operand 413 states and 555 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:23,630 INFO L93 Difference]: Finished difference Result 604 states and 829 transitions.
[2024-11-08 16:24:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:24:23,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49
[2024-11-08 16:24:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:23,634 INFO L225 Difference]: With dead ends: 604
[2024-11-08 16:24:23,634 INFO L226 Difference]: Without dead ends: 564
[2024-11-08 16:24:23,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2024-11-08 16:24:23,636 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 23 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:23,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 374 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2024-11-08 16:24:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states.
[2024-11-08 16:24:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 445.
[2024-11-08 16:24:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 395 states have (on average 1.2835443037974683) internal successors, (507), 395 states have internal predecessors, (507), 40 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (51), 47 states have call predecessors, (51), 39 states have call successors, (51)
[2024-11-08 16:24:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 598 transitions.
[2024-11-08 16:24:23,685 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 598 transitions. Word has length 49
[2024-11-08 16:24:23,685 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:23,685 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 598 transitions.
[2024-11-08 16:24:23,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 598 transitions.
[2024-11-08 16:24:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2024-11-08 16:24:23,687 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:23,688 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:23,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-11-08 16:24:23,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:23,889 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:23,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1508403527, now seen corresponding path program 1 times
[2024-11-08 16:24:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:23,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080772326]
[2024-11-08 16:24:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:23,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:23,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:23,891 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:23,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-11-08 16:24:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:23,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:23,953 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:24:24,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:24,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:24,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080772326]
[2024-11-08 16:24:24,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080772326] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:24,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:24,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:24:24,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529836840]
[2024-11-08 16:24:24,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:24,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:24:24,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:24:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:24:24,124 INFO L87 Difference]: Start difference. First operand 445 states and 598 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:24,237 INFO L93 Difference]: Finished difference Result 464 states and 619 transitions.
[2024-11-08 16:24:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:24:24,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49
[2024-11-08 16:24:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:24,240 INFO L225 Difference]: With dead ends: 464
[2024-11-08 16:24:24,241 INFO L226 Difference]: Without dead ends: 420
[2024-11-08 16:24:24,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:24:24,242 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:24,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:24:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states.
[2024-11-08 16:24:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420.
[2024-11-08 16:24:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 370 states have (on average 1.2864864864864864) internal successors, (476), 371 states have internal predecessors, (476), 40 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (49), 46 states have call predecessors, (49), 39 states have call successors, (49)
[2024-11-08 16:24:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 565 transitions.
[2024-11-08 16:24:24,287 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 565 transitions. Word has length 49
[2024-11-08 16:24:24,288 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:24,288 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 565 transitions.
[2024-11-08 16:24:24,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 565 transitions.
[2024-11-08 16:24:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 16:24:24,290 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:24,290 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:24,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2024-11-08 16:24:24,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:24,491 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:24,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2134474190, now seen corresponding path program 1 times
[2024-11-08 16:24:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484359605]
[2024-11-08 16:24:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:24,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:24,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:24,493 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:24,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-11-08 16:24:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:24,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:24,563 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 16:24:24,803 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:24,803 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:24,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484359605]
[2024-11-08 16:24:24,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484359605] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:24,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:24,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:24:24,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743209057]
[2024-11-08 16:24:24,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:24,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:24:24,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:24,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:24:24,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:24:24,807 INFO L87 Difference]: Start difference. First operand 420 states and 565 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:25,398 INFO L93 Difference]: Finished difference Result 545 states and 727 transitions.
[2024-11-08 16:24:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:24:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50
[2024-11-08 16:24:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:25,403 INFO L225 Difference]: With dead ends: 545
[2024-11-08 16:24:25,403 INFO L226 Difference]: Without dead ends: 514
[2024-11-08 16:24:25,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 16:24:25,405 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 41 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:25,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 253 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-08 16:24:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states.
[2024-11-08 16:24:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 424.
[2024-11-08 16:24:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 374 states have (on average 1.2807486631016043) internal successors, (479), 375 states have internal predecessors, (479), 40 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (49), 46 states have call predecessors, (49), 39 states have call successors, (49)
[2024-11-08 16:24:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 568 transitions.
[2024-11-08 16:24:25,440 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 568 transitions. Word has length 50
[2024-11-08 16:24:25,441 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:25,441 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 568 transitions.
[2024-11-08 16:24:25,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 568 transitions.
[2024-11-08 16:24:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 16:24:25,443 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:25,443 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:25,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2024-11-08 16:24:25,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:25,648 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:25,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash -566198360, now seen corresponding path program 1 times
[2024-11-08 16:24:25,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216443399]
[2024-11-08 16:24:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:25,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:25,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:25,650 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:25,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2024-11-08 16:24:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:25,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:25,713 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 16:24:27,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:27,388 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:27,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216443399]
[2024-11-08 16:24:27,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216443399] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:27,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:27,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 16:24:27,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478622024]
[2024-11-08 16:24:27,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:27,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 16:24:27,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 16:24:27,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2024-11-08 16:24:27,391 INFO L87 Difference]: Start difference. First operand 424 states and 568 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:31,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:31,253 INFO L93 Difference]: Finished difference Result 475 states and 636 transitions.
[2024-11-08 16:24:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 16:24:31,254 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50
[2024-11-08 16:24:31,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:31,255 INFO L225 Difference]: With dead ends: 475
[2024-11-08 16:24:31,255 INFO L226 Difference]: Without dead ends: 448
[2024-11-08 16:24:31,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272
[2024-11-08 16:24:31,257 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 72 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:31,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 823 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time]
[2024-11-08 16:24:31,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states.
[2024-11-08 16:24:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 442.
[2024-11-08 16:24:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 390 states have (on average 1.2794871794871794) internal successors, (499), 392 states have internal predecessors, (499), 42 states have call successors, (42), 6 states have call predecessors, (42), 9 states have return successors, (51), 48 states have call predecessors, (51), 41 states have call successors, (51)
[2024-11-08 16:24:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 592 transitions.
[2024-11-08 16:24:31,295 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 592 transitions. Word has length 50
[2024-11-08 16:24:31,296 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:31,296 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 592 transitions.
[2024-11-08 16:24:31,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 592 transitions.
[2024-11-08 16:24:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 16:24:31,298 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:31,298 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:31,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2024-11-08 16:24:31,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:31,502 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:31,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:31,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1821559572, now seen corresponding path program 1 times
[2024-11-08 16:24:31,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:31,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597856669]
[2024-11-08 16:24:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:31,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:31,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:31,505 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:31,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2024-11-08 16:24:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:31,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:31,589 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 16:24:32,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:32,013 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597856669]
[2024-11-08 16:24:32,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597856669] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:32,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:32,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 16:24:32,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247061326]
[2024-11-08 16:24:32,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:32,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 16:24:32,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:32,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 16:24:32,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 16:24:32,015 INFO L87 Difference]: Start difference. First operand 442 states and 592 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:33,120 INFO L93 Difference]: Finished difference Result 525 states and 701 transitions.
[2024-11-08 16:24:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:24:33,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50
[2024-11-08 16:24:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:33,128 INFO L225 Difference]: With dead ends: 525
[2024-11-08 16:24:33,128 INFO L226 Difference]: Without dead ends: 459
[2024-11-08 16:24:33,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:24:33,129 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 61 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:33,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 366 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-08 16:24:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states.
[2024-11-08 16:24:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 424.
[2024-11-08 16:24:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 374 states have (on average 1.2700534759358288) internal successors, (475), 375 states have internal predecessors, (475), 40 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (49), 46 states have call predecessors, (49), 39 states have call successors, (49)
[2024-11-08 16:24:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 564 transitions.
[2024-11-08 16:24:33,196 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 564 transitions. Word has length 50
[2024-11-08 16:24:33,196 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:33,197 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 564 transitions.
[2024-11-08 16:24:33,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 564 transitions.
[2024-11-08 16:24:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-11-08 16:24:33,199 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:33,199 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:33,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2024-11-08 16:24:33,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:33,404 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:33,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1251141765, now seen corresponding path program 1 times
[2024-11-08 16:24:33,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:33,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150904709]
[2024-11-08 16:24:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:33,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:33,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:33,406 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:33,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2024-11-08 16:24:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:33,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:33,474 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:24:35,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:35,303 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:35,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150904709]
[2024-11-08 16:24:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150904709] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:35,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:35,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 16:24:35,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54492746]
[2024-11-08 16:24:35,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:35,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 16:24:35,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:35,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 16:24:35,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2024-11-08 16:24:35,306 INFO L87 Difference]: Start difference. First operand 424 states and 564 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:38,940 INFO L93 Difference]: Finished difference Result 502 states and 668 transitions.
[2024-11-08 16:24:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-08 16:24:38,941 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51
[2024-11-08 16:24:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:38,944 INFO L225 Difference]: With dead ends: 502
[2024-11-08 16:24:38,944 INFO L226 Difference]: Without dead ends: 463
[2024-11-08 16:24:38,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2024-11-08 16:24:38,946 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 48 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:38,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 786 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2024-11-08 16:24:38,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states.
[2024-11-08 16:24:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 450.
[2024-11-08 16:24:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 396 states have (on average 1.2575757575757576) internal successors, (498), 399 states have internal predecessors, (498), 44 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (52), 49 states have call predecessors, (52), 42 states have call successors, (52)
[2024-11-08 16:24:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 594 transitions.
[2024-11-08 16:24:38,988 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 594 transitions. Word has length 51
[2024-11-08 16:24:38,988 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:38,989 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 594 transitions.
[2024-11-08 16:24:38,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:38,989 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 594 transitions.
[2024-11-08 16:24:38,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-11-08 16:24:38,991 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:38,992 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:39,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2024-11-08 16:24:39,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:39,192 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:39,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1393357641, now seen corresponding path program 1 times
[2024-11-08 16:24:39,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:39,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677680928]
[2024-11-08 16:24:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:39,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:39,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:39,194 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:39,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2024-11-08 16:24:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:39,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:39,265 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:24:39,894 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:39,894 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677680928]
[2024-11-08 16:24:39,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677680928] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:39,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:39,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-08 16:24:39,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770333763]
[2024-11-08 16:24:39,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:39,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:24:39,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:24:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:24:39,897 INFO L87 Difference]: Start difference. First operand 450 states and 594 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:41,920 INFO L93 Difference]: Finished difference Result 587 states and 781 transitions.
[2024-11-08 16:24:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:24:41,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51
[2024-11-08 16:24:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:41,923 INFO L225 Difference]: With dead ends: 587
[2024-11-08 16:24:41,923 INFO L226 Difference]: Without dead ends: 563
[2024-11-08 16:24:41,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:24:41,924 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 27 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:41,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 531 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2024-11-08 16:24:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states.
[2024-11-08 16:24:41,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 467.
[2024-11-08 16:24:41,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 409 states have (on average 1.2665036674816625) internal successors, (518), 414 states have internal predecessors, (518), 48 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (56), 52 states have call predecessors, (56), 46 states have call successors, (56)
[2024-11-08 16:24:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 622 transitions.
[2024-11-08 16:24:41,964 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 622 transitions. Word has length 51
[2024-11-08 16:24:41,964 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:41,964 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 622 transitions.
[2024-11-08 16:24:41,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 622 transitions.
[2024-11-08 16:24:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-11-08 16:24:41,966 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:41,966 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:41,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2024-11-08 16:24:42,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:42,167 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:42,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash -609523299, now seen corresponding path program 1 times
[2024-11-08 16:24:42,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:42,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521483783]
[2024-11-08 16:24:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:42,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:42,171 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:42,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2024-11-08 16:24:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:42,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:42,244 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:24:42,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:42,597 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:42,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521483783]
[2024-11-08 16:24:42,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521483783] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:42,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:42,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:24:42,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579516095]
[2024-11-08 16:24:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:42,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:24:42,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:24:42,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:24:42,600 INFO L87 Difference]: Start difference. First operand 467 states and 622 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:42,778 INFO L93 Difference]: Finished difference Result 514 states and 681 transitions.
[2024-11-08 16:24:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:24:42,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51
[2024-11-08 16:24:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:42,781 INFO L225 Difference]: With dead ends: 514
[2024-11-08 16:24:42,781 INFO L226 Difference]: Without dead ends: 467
[2024-11-08 16:24:42,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:24:42,783 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 26 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:42,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 281 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:24:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states.
[2024-11-08 16:24:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467.
[2024-11-08 16:24:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 409 states have (on average 1.215158924205379) internal successors, (497), 414 states have internal predecessors, (497), 48 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (56), 52 states have call predecessors, (56), 46 states have call successors, (56)
[2024-11-08 16:24:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 601 transitions.
[2024-11-08 16:24:42,823 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 601 transitions. Word has length 51
[2024-11-08 16:24:42,823 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:42,824 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 601 transitions.
[2024-11-08 16:24:42,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:42,824 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 601 transitions.
[2024-11-08 16:24:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-11-08 16:24:42,826 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:42,826 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:42,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2024-11-08 16:24:43,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:43,026 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:43,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 977915423, now seen corresponding path program 1 times
[2024-11-08 16:24:43,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:43,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574678951]
[2024-11-08 16:24:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:43,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:43,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:43,029 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:43,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2024-11-08 16:24:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:43,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:43,097 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:24:43,935 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:24:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:24:44,832 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:44,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574678951]
[2024-11-08 16:24:44,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574678951] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:24:44,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:24:44,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2024-11-08 16:24:44,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523563775]
[2024-11-08 16:24:44,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:24:44,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:24:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:44,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:24:44,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:24:44,836 INFO L87 Difference]: Start difference. First operand 467 states and 601 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:24:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:45,872 INFO L93 Difference]: Finished difference Result 495 states and 634 transitions.
[2024-11-08 16:24:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:24:45,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51
[2024-11-08 16:24:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:45,876 INFO L225 Difference]: With dead ends: 495
[2024-11-08 16:24:45,876 INFO L226 Difference]: Without dead ends: 459
[2024-11-08 16:24:45,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-08 16:24:45,878 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 20 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:45,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 571 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-08 16:24:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states.
[2024-11-08 16:24:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 443.
[2024-11-08 16:24:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 385 states have (on average 1.2181818181818183) internal successors, (469), 391 states have internal predecessors, (469), 48 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (56), 51 states have call predecessors, (56), 46 states have call successors, (56)
[2024-11-08 16:24:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 573 transitions.
[2024-11-08 16:24:45,925 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 573 transitions. Word has length 51
[2024-11-08 16:24:45,925 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:45,925 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 573 transitions.
[2024-11-08 16:24:45,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:24:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 573 transitions.
[2024-11-08 16:24:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2024-11-08 16:24:45,927 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:45,931 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:45,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2024-11-08 16:24:46,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:46,132 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:46,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash -317311561, now seen corresponding path program 1 times
[2024-11-08 16:24:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:46,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357809172]
[2024-11-08 16:24:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:46,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:46,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:46,134 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:46,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2024-11-08 16:24:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:46,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:46,204 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:24:46,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:46,359 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:46,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357809172]
[2024-11-08 16:24:46,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357809172] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:46,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:46,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:24:46,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771195401]
[2024-11-08 16:24:46,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:46,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:24:46,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:46,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:24:46,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:24:46,363 INFO L87 Difference]: Start difference. First operand 443 states and 573 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:46,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:46,484 INFO L93 Difference]: Finished difference Result 452 states and 581 transitions.
[2024-11-08 16:24:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:24:46,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53
[2024-11-08 16:24:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:46,489 INFO L225 Difference]: With dead ends: 452
[2024-11-08 16:24:46,490 INFO L226 Difference]: Without dead ends: 405
[2024-11-08 16:24:46,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:24:46,491 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:46,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:24:46,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states.
[2024-11-08 16:24:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 368.
[2024-11-08 16:24:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 320 states have (on average 1.215625) internal successors, (389), 325 states have internal predecessors, (389), 38 states have call successors, (38), 6 states have call predecessors, (38), 9 states have return successors, (43), 40 states have call predecessors, (43), 36 states have call successors, (43)
[2024-11-08 16:24:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 470 transitions.
[2024-11-08 16:24:46,526 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 470 transitions. Word has length 53
[2024-11-08 16:24:46,526 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:46,527 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 470 transitions.
[2024-11-08 16:24:46,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 470 transitions.
[2024-11-08 16:24:46,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2024-11-08 16:24:46,528 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:46,528 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:46,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2024-11-08 16:24:46,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:46,729 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:46,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:46,730 INFO L85 PathProgramCache]: Analyzing trace with hash 685169853, now seen corresponding path program 1 times
[2024-11-08 16:24:46,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:46,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988116763]
[2024-11-08 16:24:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:46,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:46,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:46,732 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:46,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2024-11-08 16:24:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:46,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:46,801 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:24:48,333 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:24:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 16:24:49,392 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988116763]
[2024-11-08 16:24:49,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988116763] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:24:49,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:24:49,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14
[2024-11-08 16:24:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110732411]
[2024-11-08 16:24:49,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:49,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:24:49,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:24:49,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2024-11-08 16:24:49,394 INFO L87 Difference]: Start difference. First operand 368 states and 470 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:51,068 INFO L93 Difference]: Finished difference Result 449 states and 569 transitions.
[2024-11-08 16:24:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:24:51,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53
[2024-11-08 16:24:51,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:51,071 INFO L225 Difference]: With dead ends: 449
[2024-11-08 16:24:51,071 INFO L226 Difference]: Without dead ends: 388
[2024-11-08 16:24:51,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240
[2024-11-08 16:24:51,072 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 24 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:51,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 373 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2024-11-08 16:24:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states.
[2024-11-08 16:24:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 358.
[2024-11-08 16:24:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 310 states have (on average 1.2129032258064516) internal successors, (376), 314 states have internal predecessors, (376), 39 states have call successors, (39), 6 states have call predecessors, (39), 8 states have return successors, (40), 40 states have call predecessors, (40), 37 states have call successors, (40)
[2024-11-08 16:24:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 455 transitions.
[2024-11-08 16:24:51,107 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 455 transitions. Word has length 53
[2024-11-08 16:24:51,107 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:51,108 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 455 transitions.
[2024-11-08 16:24:51,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 16:24:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 455 transitions.
[2024-11-08 16:24:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-08 16:24:51,110 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:51,110 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:51,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2024-11-08 16:24:51,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:51,311 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:51,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1804015042, now seen corresponding path program 1 times
[2024-11-08 16:24:51,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:51,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392532191]
[2024-11-08 16:24:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:51,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:51,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:51,314 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:51,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2024-11-08 16:24:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:51,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:51,401 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:24:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 16:24:53,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:24:53,948 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:24:53,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392532191]
[2024-11-08 16:24:53,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392532191] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:24:53,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:24:53,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2024-11-08 16:24:53,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649533341]
[2024-11-08 16:24:53,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:24:53,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 16:24:53,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:24:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 16:24:53,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2024-11-08 16:24:53,950 INFO L87 Difference]: Start difference. First operand 358 states and 455 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:24:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:24:58,732 INFO L93 Difference]: Finished difference Result 444 states and 563 transitions.
[2024-11-08 16:24:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-08 16:24:58,734 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55
[2024-11-08 16:24:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:24:58,736 INFO L225 Difference]: With dead ends: 444
[2024-11-08 16:24:58,736 INFO L226 Difference]: Without dead ends: 399
[2024-11-08 16:24:58,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306
[2024-11-08 16:24:58,738 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 91 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2024-11-08 16:24:58,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1273 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2024-11-08 16:24:58,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states.
[2024-11-08 16:24:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 358.
[2024-11-08 16:24:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 310 states have (on average 1.2032258064516128) internal successors, (373), 314 states have internal predecessors, (373), 39 states have call successors, (39), 6 states have call predecessors, (39), 8 states have return successors, (40), 40 states have call predecessors, (40), 37 states have call successors, (40)
[2024-11-08 16:24:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 452 transitions.
[2024-11-08 16:24:58,776 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 452 transitions. Word has length 55
[2024-11-08 16:24:58,777 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:24:58,777 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 452 transitions.
[2024-11-08 16:24:58,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:24:58,777 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 452 transitions.
[2024-11-08 16:24:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-08 16:24:58,779 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:24:58,779 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:24:58,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2024-11-08 16:24:58,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:58,984 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:24:58,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:24:58,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1661799166, now seen corresponding path program 1 times
[2024-11-08 16:24:58,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:24:58,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293635934]
[2024-11-08 16:24:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:24:58,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:24:58,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:24:58,986 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:24:58,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2024-11-08 16:24:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:24:59,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 16:24:59,054 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:25:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 16:25:00,582 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:25:01,741 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:25:01,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293635934]
[2024-11-08 16:25:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293635934] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:25:01,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1606193318]
[2024-11-08 16:25:01,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:25:01,742 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 16:25:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 16:25:01,743 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 16:25:01,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process
[2024-11-08 16:25:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:25:01,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 16:25:01,868 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:25:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 16:25:02,859 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:25:03,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1606193318] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:25:03,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:25:03,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2024-11-08 16:25:03,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836733155]
[2024-11-08 16:25:03,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:25:03,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 16:25:03,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:25:03,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 16:25:03,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156
[2024-11-08 16:25:03,262 INFO L87 Difference]: Start difference. First operand 358 states and 452 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:25:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:25:05,802 INFO L93 Difference]: Finished difference Result 439 states and 557 transitions.
[2024-11-08 16:25:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-08 16:25:05,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55
[2024-11-08 16:25:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:25:05,804 INFO L225 Difference]: With dead ends: 439
[2024-11-08 16:25:05,804 INFO L226 Difference]: Without dead ends: 399
[2024-11-08 16:25:05,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272
[2024-11-08 16:25:05,805 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 45 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2024-11-08 16:25:05,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 921 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2024-11-08 16:25:05,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states.
[2024-11-08 16:25:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 358.
[2024-11-08 16:25:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 310 states have (on average 1.196774193548387) internal successors, (371), 314 states have internal predecessors, (371), 39 states have call successors, (39), 6 states have call predecessors, (39), 8 states have return successors, (40), 40 states have call predecessors, (40), 37 states have call successors, (40)
[2024-11-08 16:25:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 450 transitions.
[2024-11-08 16:25:05,837 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 450 transitions. Word has length 55
[2024-11-08 16:25:05,837 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:25:05,837 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 450 transitions.
[2024-11-08 16:25:05,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:25:05,838 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 450 transitions.
[2024-11-08 16:25:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-08 16:25:05,839 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:25:05,839 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:25:05,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2024-11-08 16:25:06,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0
[2024-11-08 16:25:06,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt
[2024-11-08 16:25:06,240 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:25:06,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:25:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash 212141896, now seen corresponding path program 1 times
[2024-11-08 16:25:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:25:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590245288]
[2024-11-08 16:25:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:25:06,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:25:06,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:25:06,243 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:25:06,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2024-11-08 16:25:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:25:06,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-08 16:25:06,323 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:25:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 16:25:08,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:25:08,027 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:25:08,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590245288]
[2024-11-08 16:25:08,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590245288] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:25:08,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:25:08,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 16:25:08,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338836917]
[2024-11-08 16:25:08,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:25:08,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 16:25:08,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:25:08,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 16:25:08,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-11-08 16:25:08,029 INFO L87 Difference]: Start difference. First operand 358 states and 450 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 16:25:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:25:11,071 INFO L93 Difference]: Finished difference Result 430 states and 538 transitions.
[2024-11-08 16:25:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 16:25:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55
[2024-11-08 16:25:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:25:11,073 INFO L225 Difference]: With dead ends: 430
[2024-11-08 16:25:11,073 INFO L226 Difference]: Without dead ends: 376
[2024-11-08 16:25:11,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272
[2024-11-08 16:25:11,075 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 55 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:25:11,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 844 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2024-11-08 16:25:11,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states.
[2024-11-08 16:25:11,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 358.
[2024-11-08 16:25:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 310 states have (on average 1.1870967741935483) internal successors, (368), 314 states have internal predecessors, (368), 39 states have call successors, (39), 6 states have call predecessors, (39), 8 states have return successors, (40), 40 states have call predecessors, (40), 37 states have call successors, (40)
[2024-11-08 16:25:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 447 transitions.
[2024-11-08 16:25:11,104 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 447 transitions. Word has length 55
[2024-11-08 16:25:11,104 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:25:11,104 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 447 transitions.
[2024-11-08 16:25:11,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 16:25:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 447 transitions.
[2024-11-08 16:25:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-08 16:25:11,106 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:25:11,106 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:25:11,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2024-11-08 16:25:11,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:25:11,313 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:25:11,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:25:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash 69926020, now seen corresponding path program 1 times
[2024-11-08 16:25:11,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:25:11,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573527265]
[2024-11-08 16:25:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:25:11,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:25:11,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:25:11,317 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:25:11,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2024-11-08 16:25:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:25:11,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 16:25:11,393 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:25:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 16:25:13,570 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:25:15,558 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:25:15,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573527265]
[2024-11-08 16:25:15,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573527265] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:25:15,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1298138942]
[2024-11-08 16:25:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:25:15,559 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 16:25:15,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 16:25:15,560 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 16:25:15,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process
[2024-11-08 16:25:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:25:15,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 16:25:15,681 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:25:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 16:25:16,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:25:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1298138942] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:25:16,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:25:16,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10
[2024-11-08 16:25:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213398026]
[2024-11-08 16:25:16,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:25:16,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 16:25:16,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:25:16,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 16:25:16,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2024-11-08 16:25:16,202 INFO L87 Difference]: Start difference. First operand 358 states and 447 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 16:25:17,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:25:17,837 INFO L93 Difference]: Finished difference Result 378 states and 469 transitions.
[2024-11-08 16:25:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:25:17,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55
[2024-11-08 16:25:17,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:25:17,839 INFO L225 Difference]: With dead ends: 378
[2024-11-08 16:25:17,839 INFO L226 Difference]: Without dead ends: 376
[2024-11-08 16:25:17,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240
[2024-11-08 16:25:17,840 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 10 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2024-11-08 16:25:17,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 509 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2024-11-08 16:25:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states.
[2024-11-08 16:25:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 365.
[2024-11-08 16:25:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 313 states have (on average 1.1853035143769968) internal successors, (371), 320 states have internal predecessors, (371), 42 states have call successors, (42), 7 states have call predecessors, (42), 9 states have return successors, (43), 40 states have call predecessors, (43), 40 states have call successors, (43)
[2024-11-08 16:25:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 456 transitions.
[2024-11-08 16:25:17,881 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 456 transitions. Word has length 55
[2024-11-08 16:25:17,881 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:25:17,881 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 456 transitions.
[2024-11-08 16:25:17,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 16:25:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 456 transitions.
[2024-11-08 16:25:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2024-11-08 16:25:17,883 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:25:17,883 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:25:17,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0
[2024-11-08 16:25:18,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2024-11-08 16:25:18,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:25:18,284 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:25:18,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:25:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash -225389381, now seen corresponding path program 1 times
[2024-11-08 16:25:18,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:25:18,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616951077]
[2024-11-08 16:25:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:25:18,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:25:18,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:25:18,286 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:25:18,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55c5185-562b-4b60-95d2-71c605566a68/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2024-11-08 16:25:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:25:18,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-08 16:25:18,356 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:25:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 16:25:20,599 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:25:20,600 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:25:20,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616951077]
[2024-11-08 16:25:20,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616951077] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:25:20,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:25:20,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2024-11-08 16:25:20,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605512562]
[2024-11-08 16:25:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:25:20,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 16:25:20,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:25:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 16:25:20,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156
[2024-11-08 16:25:20,602 INFO L87 Difference]: Start difference. First operand 365 states and 456 transitions. Second operand has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)