./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_1-1.i --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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/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 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 19:20:16,791 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 19:20:16,850 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 19:20:16,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 19:20:16,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 19:20:16,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 19:20:16,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 19:20:16,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 19:20:16,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 19:20:16,888 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 19:20:16,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 19:20:16,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 19:20:16,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 19:20:16,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 19:20:16,891 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 19:20:16,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 19:20:16,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 19:20:16,892 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 19:20:16,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 19:20:16,893 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 19:20:16,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 19:20:16,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 19:20:16,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 19:20:16,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 19:20:16,898 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 19:20:16,898 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 19:20:16,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 19:20:16,899 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 19:20:16,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 19:20:16,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 19:20:16,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 19:20:16,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 19:20:16,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 19:20:16,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 19:20:16,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 19:20:16,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 19:20:16,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 19:20:16,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 19:20:16,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 19:20:16,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 19:20:16,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 19:20:16,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 19:20:16,909 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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80
[2024-11-08 19:20:17,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 19:20:17,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 19:20:17,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 19:20:17,230 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 19:20:17,231 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 19:20:17,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/bitvector/byte_add_1-1.i
Unable to find full path for "g++"
[2024-11-08 19:20:19,222 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 19:20:19,476 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 19:20:19,477 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/sv-benchmarks/c/bitvector/byte_add_1-1.i
[2024-11-08 19:20:19,488 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/data/019595229/8eccdf0d4aaa47d7b1ee528c5b30cb8c/FLAGb7ee8ef05
[2024-11-08 19:20:19,507 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/data/019595229/8eccdf0d4aaa47d7b1ee528c5b30cb8c
[2024-11-08 19:20:19,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 19:20:19,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 19:20:19,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 19:20:19,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 19:20:19,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 19:20:19,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:19,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ac4902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19, skipping insertion in model container
[2024-11-08 19:20:19,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:19,556 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 19:20:19,793 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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181]
[2024-11-08 19:20:19,857 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 19:20:19,883 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 19:20:19,899 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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181]
[2024-11-08 19:20:19,940 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 19:20:19,960 INFO L204 MainTranslator]: Completed translation
[2024-11-08 19:20:19,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19 WrapperNode
[2024-11-08 19:20:19,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 19:20:19,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 19:20:19,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 19:20:19,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 19:20:19,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:19,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,016 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 145
[2024-11-08 19:20:20,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 19:20:20,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 19:20:20,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 19:20:20,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 19:20:20,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,063 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 19:20:20,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 19:20:20,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 19:20:20,083 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 19:20:20,083 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 19:20:20,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (1/1) ...
[2024-11-08 19:20:20,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 19:20:20,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:20,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 19:20:20,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 19:20:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 19:20:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 19:20:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 19:20:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 19:20:20,262 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 19:20:20,266 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 19:20:20,756 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live.
[2024-11-08 19:20:20,756 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 19:20:20,776 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 19:20:20,776 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 19:20:20,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:20:20 BoogieIcfgContainer
[2024-11-08 19:20:20,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 19:20:20,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 19:20:20,783 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 19:20:20,787 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 19:20:20,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:20:19" (1/3) ...
[2024-11-08 19:20:20,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b61461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:20:20, skipping insertion in model container
[2024-11-08 19:20:20,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:19" (2/3) ...
[2024-11-08 19:20:20,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b61461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:20:20, skipping insertion in model container
[2024-11-08 19:20:20,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:20:20" (3/3) ...
[2024-11-08 19:20:20,791 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i
[2024-11-08 19:20:20,827 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 19:20:20,827 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 19:20:20,915 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 19:20:20,924 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;@49bbdd2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 19:20:20,924 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 19:20:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 52 states have internal predecessors, (88), 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 19:20:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2024-11-08 19:20:20,938 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:20,938 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:20:20,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:20,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1425856197, now seen corresponding path program 1 times
[2024-11-08 19:20:20,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:20,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945657352]
[2024-11-08 19:20:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:20,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:21,408 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 19:20:21,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945657352]
[2024-11-08 19:20:21,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945657352] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:21,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:20:21,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 19:20:21,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729456279]
[2024-11-08 19:20:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:21,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 19:20:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 19:20:21,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:20:21,450 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 52 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 19:20:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:21,747 INFO L93 Difference]: Finished difference Result 121 states and 208 transitions.
[2024-11-08 19:20:21,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 19:20:21,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15
[2024-11-08 19:20:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:21,760 INFO L225 Difference]: With dead ends: 121
[2024-11-08 19:20:21,761 INFO L226 Difference]: Without dead ends: 74
[2024-11-08 19:20:21,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:20:21,771 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 27 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:21,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 97 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 19:20:21,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2024-11-08 19:20:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72.
[2024-11-08 19:20:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 71 states have internal predecessors, (111), 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 19:20:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 111 transitions.
[2024-11-08 19:20:21,825 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 111 transitions. Word has length 15
[2024-11-08 19:20:21,827 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:21,827 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 111 transitions.
[2024-11-08 19:20:21,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 19:20:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 111 transitions.
[2024-11-08 19:20:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-11-08 19:20:21,830 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:21,831 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:20:21,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 19:20:21,831 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:21,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash 146882634, now seen corresponding path program 1 times
[2024-11-08 19:20:21,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:21,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516478945]
[2024-11-08 19:20:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:21,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:20:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516478945]
[2024-11-08 19:20:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516478945] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:22,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:20:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:20:22,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864234000]
[2024-11-08 19:20:22,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:22,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:20:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:22,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:20:22,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:20:22,134 INFO L87 Difference]: Start difference. First operand 72 states and 111 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 19:20:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:22,472 INFO L93 Difference]: Finished difference Result 172 states and 294 transitions.
[2024-11-08 19:20:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 19:20:22,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22
[2024-11-08 19:20:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:22,474 INFO L225 Difference]: With dead ends: 172
[2024-11-08 19:20:22,474 INFO L226 Difference]: Without dead ends: 133
[2024-11-08 19:20:22,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:20:22,475 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 101 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:22,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 117 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 19:20:22,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2024-11-08 19:20:22,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 97.
[2024-11-08 19:20:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.5520833333333333) internal successors, (149), 96 states have internal predecessors, (149), 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 19:20:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 149 transitions.
[2024-11-08 19:20:22,508 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 149 transitions. Word has length 22
[2024-11-08 19:20:22,509 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:22,512 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 149 transitions.
[2024-11-08 19:20:22,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 19:20:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 149 transitions.
[2024-11-08 19:20:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-11-08 19:20:22,513 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:22,513 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:20:22,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-08 19:20:22,514 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:22,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:22,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2015341727, now seen corresponding path program 1 times
[2024-11-08 19:20:22,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:22,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342629559]
[2024-11-08 19:20:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:22,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 19:20:22,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342629559]
[2024-11-08 19:20:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342629559] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:22,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:20:22,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:20:22,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361887869]
[2024-11-08 19:20:22,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:22,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:20:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:20:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:20:22,772 INFO L87 Difference]: Start difference. First operand 97 states and 149 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:20:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:23,034 INFO L93 Difference]: Finished difference Result 248 states and 378 transitions.
[2024-11-08 19:20:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 19:20:23,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 29
[2024-11-08 19:20:23,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:23,037 INFO L225 Difference]: With dead ends: 248
[2024-11-08 19:20:23,040 INFO L226 Difference]: Without dead ends: 165
[2024-11-08 19:20:23,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:20:23,042 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 73 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:23,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 185 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:20:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2024-11-08 19:20:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 106.
[2024-11-08 19:20:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.5142857142857142) internal successors, (159), 105 states have internal predecessors, (159), 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 19:20:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 159 transitions.
[2024-11-08 19:20:23,068 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 159 transitions. Word has length 29
[2024-11-08 19:20:23,068 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:23,068 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 159 transitions.
[2024-11-08 19:20:23,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:20:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 159 transitions.
[2024-11-08 19:20:23,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-11-08 19:20:23,070 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:23,070 INFO L215 NwaCegarLoop]: trace histogram [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]
[2024-11-08 19:20:23,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-08 19:20:23,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:23,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash -931511442, now seen corresponding path program 1 times
[2024-11-08 19:20:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:23,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129127889]
[2024-11-08 19:20:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:23,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 19:20:23,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129127889]
[2024-11-08 19:20:23,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129127889] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:23,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:20:23,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:20:23,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146453638]
[2024-11-08 19:20:23,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:23,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:20:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:23,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:20:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:20:23,280 INFO L87 Difference]: Start difference. First operand 106 states and 159 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 19:20:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:23,511 INFO L93 Difference]: Finished difference Result 271 states and 406 transitions.
[2024-11-08 19:20:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 19:20:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 30
[2024-11-08 19:20:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:23,514 INFO L225 Difference]: With dead ends: 271
[2024-11-08 19:20:23,514 INFO L226 Difference]: Without dead ends: 187
[2024-11-08 19:20:23,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:20:23,519 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 77 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:23,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 193 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:20:23,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states.
[2024-11-08 19:20:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 118.
[2024-11-08 19:20:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.4871794871794872) internal successors, (174), 117 states have internal predecessors, (174), 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 19:20:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 174 transitions.
[2024-11-08 19:20:23,539 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 174 transitions. Word has length 30
[2024-11-08 19:20:23,539 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:23,539 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 174 transitions.
[2024-11-08 19:20:23,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 19:20:23,544 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 174 transitions.
[2024-11-08 19:20:23,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-08 19:20:23,545 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:23,546 INFO L215 NwaCegarLoop]: trace histogram [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]
[2024-11-08 19:20:23,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-08 19:20:23,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:23,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:23,547 INFO L85 PathProgramCache]: Analyzing trace with hash -426268240, now seen corresponding path program 1 times
[2024-11-08 19:20:23,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:23,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784559352]
[2024-11-08 19:20:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:23,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:20:23,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784559352]
[2024-11-08 19:20:23,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784559352] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636917679]
[2024-11-08 19:20:23,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:23,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:23,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:23,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:23,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 19:20:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:23,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:23,834 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-11-08 19:20:23,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:20:23,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636917679] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:23,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:20:23,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2024-11-08 19:20:23,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191062734]
[2024-11-08 19:20:23,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:23,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 19:20:23,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:23,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 19:20:23,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-08 19:20:23,922 INFO L87 Difference]: Start difference. First operand 118 states and 174 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 19:20:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:24,230 INFO L93 Difference]: Finished difference Result 367 states and 571 transitions.
[2024-11-08 19:20:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 19:20:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 31
[2024-11-08 19:20:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:24,231 INFO L225 Difference]: With dead ends: 367
[2024-11-08 19:20:24,232 INFO L226 Difference]: Without dead ends: 280
[2024-11-08 19:20:24,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2024-11-08 19:20:24,233 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 102 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:24,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 324 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 19:20:24,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states.
[2024-11-08 19:20:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 256.
[2024-11-08 19:20:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.4980392156862745) internal successors, (382), 255 states have internal predecessors, (382), 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 19:20:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 382 transitions.
[2024-11-08 19:20:24,252 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 382 transitions. Word has length 31
[2024-11-08 19:20:24,252 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:24,252 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 382 transitions.
[2024-11-08 19:20:24,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 19:20:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 382 transitions.
[2024-11-08 19:20:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-08 19:20:24,253 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:24,254 INFO L215 NwaCegarLoop]: trace histogram [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]
[2024-11-08 19:20:24,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 19:20:24,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:24,455 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:24,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1484196812, now seen corresponding path program 1 times
[2024-11-08 19:20:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:24,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051628881]
[2024-11-08 19:20:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:24,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:20:24,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:24,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051628881]
[2024-11-08 19:20:24,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051628881] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:24,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601718899]
[2024-11-08 19:20:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:24,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:24,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:24,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:24,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 19:20:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:24,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:24,687 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:20:24,757 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:20:24,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601718899] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:24,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:20:24,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6
[2024-11-08 19:20:24,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518593597]
[2024-11-08 19:20:24,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:24,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:20:24,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:20:24,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:20:24,764 INFO L87 Difference]: Start difference. First operand 256 states and 382 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 19:20:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:25,022 INFO L93 Difference]: Finished difference Result 609 states and 962 transitions.
[2024-11-08 19:20:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 19:20:25,023 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), 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 32
[2024-11-08 19:20:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:25,025 INFO L225 Difference]: With dead ends: 609
[2024-11-08 19:20:25,025 INFO L226 Difference]: Without dead ends: 371
[2024-11-08 19:20:25,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:20:25,030 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 40 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:25,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 155 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:20:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states.
[2024-11-08 19:20:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 329.
[2024-11-08 19:20:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.4085365853658536) internal successors, (462), 328 states have internal predecessors, (462), 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 19:20:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 462 transitions.
[2024-11-08 19:20:25,069 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 462 transitions. Word has length 32
[2024-11-08 19:20:25,069 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:25,069 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 462 transitions.
[2024-11-08 19:20:25,069 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), 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 19:20:25,069 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 462 transitions.
[2024-11-08 19:20:25,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2024-11-08 19:20:25,071 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:25,075 INFO L215 NwaCegarLoop]: trace histogram [3, 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]
[2024-11-08 19:20:25,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 19:20:25,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:25,276 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:25,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:25,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1195737777, now seen corresponding path program 1 times
[2024-11-08 19:20:25,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:25,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912701071]
[2024-11-08 19:20:25,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:25,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:20:25,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:25,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912701071]
[2024-11-08 19:20:25,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912701071] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:25,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772225700]
[2024-11-08 19:20:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:25,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:25,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:25,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:25,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 19:20:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:25,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:25,591 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2024-11-08 19:20:25,624 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:20:25,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772225700] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:25,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:20:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7
[2024-11-08 19:20:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878290156]
[2024-11-08 19:20:25,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:25,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:20:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:20:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-08 19:20:25,627 INFO L87 Difference]: Start difference. First operand 329 states and 462 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 19:20:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:25,850 INFO L93 Difference]: Finished difference Result 758 states and 1106 transitions.
[2024-11-08 19:20:25,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 19:20:25,851 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), 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 39
[2024-11-08 19:20:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:25,854 INFO L225 Difference]: With dead ends: 758
[2024-11-08 19:20:25,854 INFO L226 Difference]: Without dead ends: 464
[2024-11-08 19:20:25,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-08 19:20:25,856 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 39 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:25,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 155 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:20:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states.
[2024-11-08 19:20:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 391.
[2024-11-08 19:20:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.382051282051282) internal successors, (539), 390 states have internal predecessors, (539), 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 19:20:25,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 539 transitions.
[2024-11-08 19:20:25,877 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 539 transitions. Word has length 39
[2024-11-08 19:20:25,877 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:25,877 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 539 transitions.
[2024-11-08 19:20:25,877 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), 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 19:20:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 539 transitions.
[2024-11-08 19:20:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2024-11-08 19:20:25,879 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:25,880 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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]
[2024-11-08 19:20:25,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 19:20:26,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:26,084 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:26,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:26,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1659461416, now seen corresponding path program 1 times
[2024-11-08 19:20:26,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:26,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299543265]
[2024-11-08 19:20:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked.
[2024-11-08 19:20:26,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299543265]
[2024-11-08 19:20:26,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299543265] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:26,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:20:26,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 19:20:26,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926208955]
[2024-11-08 19:20:26,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:26,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 19:20:26,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:26,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 19:20:26,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:20:26,258 INFO L87 Difference]: Start difference. First operand 391 states and 539 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 19:20:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:26,275 INFO L93 Difference]: Finished difference Result 742 states and 1024 transitions.
[2024-11-08 19:20:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 19:20:26,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 46
[2024-11-08 19:20:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:26,277 INFO L225 Difference]: With dead ends: 742
[2024-11-08 19:20:26,278 INFO L226 Difference]: Without dead ends: 370
[2024-11-08 19:20:26,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:20:26,279 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 73 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:26,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 79 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 19:20:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states.
[2024-11-08 19:20:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370.
[2024-11-08 19:20:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.3739837398373984) internal successors, (507), 369 states have internal predecessors, (507), 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 19:20:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 507 transitions.
[2024-11-08 19:20:26,297 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 507 transitions. Word has length 46
[2024-11-08 19:20:26,297 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:26,297 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 507 transitions.
[2024-11-08 19:20:26,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 19:20:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 507 transitions.
[2024-11-08 19:20:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2024-11-08 19:20:26,299 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:26,299 INFO L215 NwaCegarLoop]: trace histogram [3, 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]
[2024-11-08 19:20:26,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-08 19:20:26,300 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:26,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1247444344, now seen corresponding path program 1 times
[2024-11-08 19:20:26,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:26,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512163117]
[2024-11-08 19:20:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:26,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-08 19:20:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:26,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512163117]
[2024-11-08 19:20:26,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512163117] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:26,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:20:26,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 19:20:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194269015]
[2024-11-08 19:20:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:26,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 19:20:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 19:20:26,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:20:26,398 INFO L87 Difference]: Start difference. First operand 370 states and 507 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 19:20:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:26,429 INFO L93 Difference]: Finished difference Result 532 states and 718 transitions.
[2024-11-08 19:20:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 19:20:26,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 52
[2024-11-08 19:20:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:26,431 INFO L225 Difference]: With dead ends: 532
[2024-11-08 19:20:26,432 INFO L226 Difference]: Without dead ends: 479
[2024-11-08 19:20:26,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:20:26,433 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 5 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:26,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 148 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 19:20:26,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states.
[2024-11-08 19:20:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 465.
[2024-11-08 19:20:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.3275862068965518) internal successors, (616), 464 states have internal predecessors, (616), 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 19:20:26,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 616 transitions.
[2024-11-08 19:20:26,450 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 616 transitions. Word has length 52
[2024-11-08 19:20:26,450 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:26,450 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 616 transitions.
[2024-11-08 19:20:26,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 19:20:26,450 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 616 transitions.
[2024-11-08 19:20:26,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2024-11-08 19:20:26,451 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:26,451 INFO L215 NwaCegarLoop]: trace histogram [3, 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]
[2024-11-08 19:20:26,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-08 19:20:26,452 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:26,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash 853077558, now seen corresponding path program 1 times
[2024-11-08 19:20:26,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:26,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198045103]
[2024-11-08 19:20:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:26,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 19:20:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198045103]
[2024-11-08 19:20:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198045103] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355855290]
[2024-11-08 19:20:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:26,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:26,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:26,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:26,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 19:20:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:26,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:26,759 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-08 19:20:26,815 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:20:26,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355855290] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:26,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:20:26,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6
[2024-11-08 19:20:26,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293362356]
[2024-11-08 19:20:26,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:26,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:20:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:26,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:20:26,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:20:26,817 INFO L87 Difference]: Start difference. First operand 465 states and 616 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 19:20:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:26,929 INFO L93 Difference]: Finished difference Result 1030 states and 1375 transitions.
[2024-11-08 19:20:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 19:20:26,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 52
[2024-11-08 19:20:26,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:26,931 INFO L225 Difference]: With dead ends: 1030
[2024-11-08 19:20:26,931 INFO L226 Difference]: Without dead ends: 501
[2024-11-08 19:20:26,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2024-11-08 19:20:26,933 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 36 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:26,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 107 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:20:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states.
[2024-11-08 19:20:26,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 404.
[2024-11-08 19:20:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.28287841191067) internal successors, (517), 403 states have internal predecessors, (517), 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 19:20:26,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 517 transitions.
[2024-11-08 19:20:26,949 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 517 transitions. Word has length 52
[2024-11-08 19:20:26,949 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:26,949 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 517 transitions.
[2024-11-08 19:20:26,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 19:20:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 517 transitions.
[2024-11-08 19:20:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2024-11-08 19:20:26,952 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:26,952 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:20:26,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 19:20:27,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:27,153 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:27,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash 798029200, now seen corresponding path program 1 times
[2024-11-08 19:20:27,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:27,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157667880]
[2024-11-08 19:20:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:27,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2024-11-08 19:20:27,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:27,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157667880]
[2024-11-08 19:20:27,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157667880] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:27,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:20:27,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 19:20:27,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634206271]
[2024-11-08 19:20:27,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:27,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 19:20:27,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 19:20:27,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:20:27,524 INFO L87 Difference]: Start difference. First operand 404 states and 517 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 19:20:27,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:27,710 INFO L93 Difference]: Finished difference Result 1277 states and 1618 transitions.
[2024-11-08 19:20:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 19:20:27,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 73
[2024-11-08 19:20:27,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:27,714 INFO L225 Difference]: With dead ends: 1277
[2024-11-08 19:20:27,714 INFO L226 Difference]: Without dead ends: 895
[2024-11-08 19:20:27,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2024-11-08 19:20:27,716 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 139 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:27,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 247 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:20:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states.
[2024-11-08 19:20:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 609.
[2024-11-08 19:20:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.2730263157894737) internal successors, (774), 608 states have internal predecessors, (774), 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 19:20:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 774 transitions.
[2024-11-08 19:20:27,745 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 774 transitions. Word has length 73
[2024-11-08 19:20:27,745 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:27,745 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 774 transitions.
[2024-11-08 19:20:27,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 19:20:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 774 transitions.
[2024-11-08 19:20:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2024-11-08 19:20:27,747 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:27,747 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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]
[2024-11-08 19:20:27,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-08 19:20:27,748 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:27,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:27,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1747210730, now seen corresponding path program 1 times
[2024-11-08 19:20:27,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:27,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236673674]
[2024-11-08 19:20:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:27,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2024-11-08 19:20:28,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:28,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236673674]
[2024-11-08 19:20:28,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236673674] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:28,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:20:28,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:20:28,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109362182]
[2024-11-08 19:20:28,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:28,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:20:28,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:28,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:20:28,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:20:28,063 INFO L87 Difference]: Start difference. First operand 609 states and 774 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 19:20:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:28,558 INFO L93 Difference]: Finished difference Result 1102 states and 1394 transitions.
[2024-11-08 19:20:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 19:20:28,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 73
[2024-11-08 19:20:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:28,562 INFO L225 Difference]: With dead ends: 1102
[2024-11-08 19:20:28,562 INFO L226 Difference]: Without dead ends: 879
[2024-11-08 19:20:28,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2024-11-08 19:20:28,564 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 194 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:28,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 350 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-08 19:20:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states.
[2024-11-08 19:20:28,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 618.
[2024-11-08 19:20:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 1.2690437601296596) internal successors, (783), 617 states have internal predecessors, (783), 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 19:20:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 783 transitions.
[2024-11-08 19:20:28,598 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 783 transitions. Word has length 73
[2024-11-08 19:20:28,598 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:28,598 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 783 transitions.
[2024-11-08 19:20:28,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 19:20:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 783 transitions.
[2024-11-08 19:20:28,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2024-11-08 19:20:28,600 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:28,600 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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]
[2024-11-08 19:20:28,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-08 19:20:28,600 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:28,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:28,601 INFO L85 PathProgramCache]: Analyzing trace with hash -531057004, now seen corresponding path program 1 times
[2024-11-08 19:20:28,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:28,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267624795]
[2024-11-08 19:20:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:28,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2024-11-08 19:20:29,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:29,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267624795]
[2024-11-08 19:20:29,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267624795] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:29,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280404317]
[2024-11-08 19:20:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:29,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:29,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:29,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:29,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 19:20:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:29,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:29,403 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 37 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 19:20:29,778 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:20:30,129 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-11-08 19:20:30,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280404317] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:20:30,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:20:30,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18
[2024-11-08 19:20:30,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328518523]
[2024-11-08 19:20:30,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:20:30,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-08 19:20:30,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:30,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-08 19:20:30,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306
[2024-11-08 19:20:30,132 INFO L87 Difference]: Start difference. First operand 618 states and 783 transitions. Second operand has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 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 19:20:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:32,402 INFO L93 Difference]: Finished difference Result 1752 states and 2196 transitions.
[2024-11-08 19:20:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2024-11-08 19:20:32,403 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 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 73
[2024-11-08 19:20:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:32,408 INFO L225 Difference]: With dead ends: 1752
[2024-11-08 19:20:32,408 INFO L226 Difference]: Without dead ends: 1741
[2024-11-08 19:20:32,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=961, Invalid=3595, Unknown=0, NotChecked=0, Total=4556
[2024-11-08 19:20:32,411 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 538 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:32,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1098 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-08 19:20:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states.
[2024-11-08 19:20:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 813.
[2024-11-08 19:20:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 1.2746305418719213) internal successors, (1035), 812 states have internal predecessors, (1035), 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 19:20:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1035 transitions.
[2024-11-08 19:20:32,463 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1035 transitions. Word has length 73
[2024-11-08 19:20:32,463 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:32,463 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1035 transitions.
[2024-11-08 19:20:32,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 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 19:20:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1035 transitions.
[2024-11-08 19:20:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-08 19:20:32,465 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:32,465 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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]
[2024-11-08 19:20:32,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 19:20:32,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-11-08 19:20:32,666 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:32,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1337588570, now seen corresponding path program 1 times
[2024-11-08 19:20:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:32,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204059662]
[2024-11-08 19:20:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:32,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-11-08 19:20:33,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204059662]
[2024-11-08 19:20:33,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204059662] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626717954]
[2024-11-08 19:20:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:33,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:33,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:33,274 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:33,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 19:20:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:33,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:33,536 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 2 proven. 64 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-08 19:20:33,771 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:20:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-08 19:20:34,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626717954] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:20:34,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:20:34,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21
[2024-11-08 19:20:34,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575529990]
[2024-11-08 19:20:34,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:20:34,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-11-08 19:20:34,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:34,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-11-08 19:20:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420
[2024-11-08 19:20:34,079 INFO L87 Difference]: Start difference. First operand 813 states and 1035 transitions. Second operand has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 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 19:20:39,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:39,112 INFO L93 Difference]: Finished difference Result 3310 states and 4149 transitions.
[2024-11-08 19:20:39,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states.
[2024-11-08 19:20:39,113 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 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 75
[2024-11-08 19:20:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:39,123 INFO L225 Difference]: With dead ends: 3310
[2024-11-08 19:20:39,123 INFO L226 Difference]: Without dead ends: 3299
[2024-11-08 19:20:39,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4038 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2358, Invalid=10298, Unknown=0, NotChecked=0, Total=12656
[2024-11-08 19:20:39,129 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 894 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:39,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1877 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2024-11-08 19:20:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states.
[2024-11-08 19:20:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 1446.
[2024-11-08 19:20:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 1.28719723183391) internal successors, (1860), 1445 states have internal predecessors, (1860), 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 19:20:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1860 transitions.
[2024-11-08 19:20:39,255 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1860 transitions. Word has length 75
[2024-11-08 19:20:39,256 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:39,256 INFO L471 AbstractCegarLoop]: Abstraction has 1446 states and 1860 transitions.
[2024-11-08 19:20:39,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 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 19:20:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1860 transitions.
[2024-11-08 19:20:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2024-11-08 19:20:39,259 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:39,260 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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]
[2024-11-08 19:20:39,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-08 19:20:39,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-11-08 19:20:39,464 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:39,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:39,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1248541656, now seen corresponding path program 1 times
[2024-11-08 19:20:39,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:39,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099182189]
[2024-11-08 19:20:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:39,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked.
[2024-11-08 19:20:39,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:39,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099182189]
[2024-11-08 19:20:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099182189] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:20:39,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:20:39,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:20:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764990502]
[2024-11-08 19:20:39,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:20:39,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:20:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:39,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:20:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:20:39,892 INFO L87 Difference]: Start difference. First operand 1446 states and 1860 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 19:20:40,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:40,019 INFO L93 Difference]: Finished difference Result 1457 states and 1873 transitions.
[2024-11-08 19:20:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 19:20:40,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 76
[2024-11-08 19:20:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:40,025 INFO L225 Difference]: With dead ends: 1457
[2024-11-08 19:20:40,025 INFO L226 Difference]: Without dead ends: 1452
[2024-11-08 19:20:40,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:20:40,028 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 3 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:40,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 211 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:20:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states.
[2024-11-08 19:20:40,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1448.
[2024-11-08 19:20:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 1.2874913614374568) internal successors, (1863), 1447 states have internal predecessors, (1863), 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 19:20:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1863 transitions.
[2024-11-08 19:20:40,112 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1863 transitions. Word has length 76
[2024-11-08 19:20:40,112 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:40,113 INFO L471 AbstractCegarLoop]: Abstraction has 1448 states and 1863 transitions.
[2024-11-08 19:20:40,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 19:20:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1863 transitions.
[2024-11-08 19:20:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-08 19:20:40,115 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:40,115 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:20:40,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2024-11-08 19:20:40,115 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:40,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:40,116 INFO L85 PathProgramCache]: Analyzing trace with hash 830672284, now seen corresponding path program 1 times
[2024-11-08 19:20:40,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:40,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167804134]
[2024-11-08 19:20:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2024-11-08 19:20:40,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167804134]
[2024-11-08 19:20:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167804134] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:40,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728746332]
[2024-11-08 19:20:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:40,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:40,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:40,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:40,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 19:20:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:40,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:40,595 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2024-11-08 19:20:40,727 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:20:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2024-11-08 19:20:40,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728746332] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:20:40,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:20:40,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16
[2024-11-08 19:20:40,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17746173]
[2024-11-08 19:20:40,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:20:40,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-08 19:20:40,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:40,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-08 19:20:40,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240
[2024-11-08 19:20:40,938 INFO L87 Difference]: Start difference. First operand 1448 states and 1863 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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 19:20:42,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:42,224 INFO L93 Difference]: Finished difference Result 4223 states and 5476 transitions.
[2024-11-08 19:20:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-11-08 19:20:42,225 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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 77
[2024-11-08 19:20:42,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:42,233 INFO L225 Difference]: With dead ends: 4223
[2024-11-08 19:20:42,233 INFO L226 Difference]: Without dead ends: 2769
[2024-11-08 19:20:42,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702
[2024-11-08 19:20:42,236 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 486 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:42,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 478 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-08 19:20:42,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states.
[2024-11-08 19:20:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2341.
[2024-11-08 19:20:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2340 states have (on average 1.2905982905982907) internal successors, (3020), 2340 states have internal predecessors, (3020), 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 19:20:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3020 transitions.
[2024-11-08 19:20:42,405 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3020 transitions. Word has length 77
[2024-11-08 19:20:42,405 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:42,405 INFO L471 AbstractCegarLoop]: Abstraction has 2341 states and 3020 transitions.
[2024-11-08 19:20:42,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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 19:20:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3020 transitions.
[2024-11-08 19:20:42,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-08 19:20:42,408 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:42,408 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:20:42,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-08 19:20:42,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-11-08 19:20:42,615 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:42,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:42,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1798022938, now seen corresponding path program 1 times
[2024-11-08 19:20:42,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:42,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945469261]
[2024-11-08 19:20:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:42,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 58 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-11-08 19:20:43,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:43,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945469261]
[2024-11-08 19:20:43,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945469261] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:43,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615564433]
[2024-11-08 19:20:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:43,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:43,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:43,118 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:43,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 19:20:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:44,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:44,478 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 58 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-11-08 19:20:44,589 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:20:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 53 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-11-08 19:20:44,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615564433] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:20:44,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:20:44,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14
[2024-11-08 19:20:44,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797970677]
[2024-11-08 19:20:44,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:20:44,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 19:20:44,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:44,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 19:20:44,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182
[2024-11-08 19:20:44,727 INFO L87 Difference]: Start difference. First operand 2341 states and 3020 transitions. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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 19:20:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:45,444 INFO L93 Difference]: Finished difference Result 4976 states and 6352 transitions.
[2024-11-08 19:20:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-08 19:20:45,444 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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 77
[2024-11-08 19:20:45,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:45,452 INFO L225 Difference]: With dead ends: 4976
[2024-11-08 19:20:45,452 INFO L226 Difference]: Without dead ends: 2712
[2024-11-08 19:20:45,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506
[2024-11-08 19:20:45,455 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 293 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:45,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 660 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 19:20:45,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states.
[2024-11-08 19:20:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 1829.
[2024-11-08 19:20:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.2702407002188183) internal successors, (2322), 1828 states have internal predecessors, (2322), 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 19:20:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2322 transitions.
[2024-11-08 19:20:45,585 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2322 transitions. Word has length 77
[2024-11-08 19:20:45,585 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:45,585 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2322 transitions.
[2024-11-08 19:20:45,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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 19:20:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2322 transitions.
[2024-11-08 19:20:45,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-08 19:20:45,587 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:45,587 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:20:45,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-08 19:20:45,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-08 19:20:45,788 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:45,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:45,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2008134242, now seen corresponding path program 2 times
[2024-11-08 19:20:45,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:45,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498650750]
[2024-11-08 19:20:45,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 5 proven. 79 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:20:46,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:46,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498650750]
[2024-11-08 19:20:46,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498650750] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:46,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474847059]
[2024-11-08 19:20:46,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 19:20:46,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:46,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:46,365 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:46,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 19:20:46,568 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 19:20:46,568 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:20:46,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:46,571 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-08 19:20:46,883 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:20:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-08 19:20:48,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474847059] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:20:48,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:20:48,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21
[2024-11-08 19:20:48,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818584498]
[2024-11-08 19:20:48,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:20:48,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-11-08 19:20:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-11-08 19:20:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420
[2024-11-08 19:20:48,080 INFO L87 Difference]: Start difference. First operand 1829 states and 2322 transitions. Second operand has 21 states, 21 states have (on average 8.238095238095237) internal successors, (173), 21 states have internal predecessors, (173), 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 19:20:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:20:52,302 INFO L93 Difference]: Finished difference Result 8134 states and 9988 transitions.
[2024-11-08 19:20:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2024-11-08 19:20:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.238095238095237) internal successors, (173), 21 states have internal predecessors, (173), 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 77
[2024-11-08 19:20:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:20:52,327 INFO L225 Difference]: With dead ends: 8134
[2024-11-08 19:20:52,327 INFO L226 Difference]: Without dead ends: 8119
[2024-11-08 19:20:52,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=734, Invalid=3048, Unknown=0, NotChecked=0, Total=3782
[2024-11-08 19:20:52,331 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 470 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2024-11-08 19:20:52,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1861 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2024-11-08 19:20:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8119 states.
[2024-11-08 19:20:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8119 to 2379.
[2024-11-08 19:20:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2378 states have (on average 1.2733389402859545) internal successors, (3028), 2378 states have internal predecessors, (3028), 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 19:20:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 3028 transitions.
[2024-11-08 19:20:52,558 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 3028 transitions. Word has length 77
[2024-11-08 19:20:52,559 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:20:52,559 INFO L471 AbstractCegarLoop]: Abstraction has 2379 states and 3028 transitions.
[2024-11-08 19:20:52,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.238095238095237) internal successors, (173), 21 states have internal predecessors, (173), 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 19:20:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 3028 transitions.
[2024-11-08 19:20:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-08 19:20:52,579 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:20:52,579 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:20:52,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-08 19:20:52,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-11-08 19:20:52,781 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:20:52,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:20:52,781 INFO L85 PathProgramCache]: Analyzing trace with hash -747216992, now seen corresponding path program 1 times
[2024-11-08 19:20:52,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:20:52,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756557032]
[2024-11-08 19:20:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:52,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:20:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 2 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 19:20:53,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:20:53,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756557032]
[2024-11-08 19:20:53,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756557032] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:20:53,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265136201]
[2024-11-08 19:20:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:20:53,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:20:53,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:20:53,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:20:53,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 19:20:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:20:53,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-08 19:20:53,845 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:20:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-11-08 19:20:54,165 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:20:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-11-08 19:20:55,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265136201] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:20:55,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:20:55,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23
[2024-11-08 19:20:55,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287624839]
[2024-11-08 19:20:55,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:20:55,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 19:20:55,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:20:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 19:20:55,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506
[2024-11-08 19:20:55,152 INFO L87 Difference]: Start difference. First operand 2379 states and 3028 transitions. Second operand has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 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 19:21:07,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:07,125 INFO L93 Difference]: Finished difference Result 8334 states and 10283 transitions.
[2024-11-08 19:21:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states.
[2024-11-08 19:21:07,126 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 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 77
[2024-11-08 19:21:07,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:07,147 INFO L225 Difference]: With dead ends: 8334
[2024-11-08 19:21:07,148 INFO L226 Difference]: Without dead ends: 8322
[2024-11-08 19:21:07,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4488 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2665, Invalid=10675, Unknown=0, NotChecked=0, Total=13340
[2024-11-08 19:21:07,153 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 941 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:07,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1280 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2024-11-08 19:21:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8322 states.
[2024-11-08 19:21:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8322 to 3092.
[2024-11-08 19:21:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3091 states have (on average 1.2675509543836947) internal successors, (3918), 3091 states have internal predecessors, (3918), 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 19:21:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 3918 transitions.
[2024-11-08 19:21:07,468 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 3918 transitions. Word has length 77
[2024-11-08 19:21:07,468 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:07,468 INFO L471 AbstractCegarLoop]: Abstraction has 3092 states and 3918 transitions.
[2024-11-08 19:21:07,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 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 19:21:07,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 3918 transitions.
[2024-11-08 19:21:07,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-08 19:21:07,472 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:07,472 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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]
[2024-11-08 19:21:07,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-08 19:21:07,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:07,673 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:07,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2492721, now seen corresponding path program 1 times
[2024-11-08 19:21:07,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:21:07,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394904749]
[2024-11-08 19:21:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:07,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:21:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 40 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 19:21:08,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:21:08,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394904749]
[2024-11-08 19:21:08,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394904749] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:21:08,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377055456]
[2024-11-08 19:21:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:08,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:08,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:08,158 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:08,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-08 19:21:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:08,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:08,777 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2024-11-08 19:21:08,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377055456] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:08,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:21:08,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12
[2024-11-08 19:21:08,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531892013]
[2024-11-08 19:21:08,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:08,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 19:21:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:21:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 19:21:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2024-11-08 19:21:08,850 INFO L87 Difference]: Start difference. First operand 3092 states and 3918 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 19:21:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:09,269 INFO L93 Difference]: Finished difference Result 3369 states and 4259 transitions.
[2024-11-08 19:21:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 19:21:09,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 77
[2024-11-08 19:21:09,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:09,275 INFO L225 Difference]: With dead ends: 3369
[2024-11-08 19:21:09,275 INFO L226 Difference]: Without dead ends: 2037
[2024-11-08 19:21:09,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2024-11-08 19:21:09,277 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 135 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:09,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 546 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:09,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states.
[2024-11-08 19:21:09,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2026.
[2024-11-08 19:21:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 2025 states have (on average 1.234074074074074) internal successors, (2499), 2025 states have internal predecessors, (2499), 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 19:21:09,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2499 transitions.
[2024-11-08 19:21:09,523 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2499 transitions. Word has length 77
[2024-11-08 19:21:09,523 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:09,523 INFO L471 AbstractCegarLoop]: Abstraction has 2026 states and 2499 transitions.
[2024-11-08 19:21:09,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 19:21:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2499 transitions.
[2024-11-08 19:21:09,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2024-11-08 19:21:09,526 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:09,526 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 19:21:09,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-08 19:21:09,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:09,727 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:09,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:09,728 INFO L85 PathProgramCache]: Analyzing trace with hash -557313567, now seen corresponding path program 1 times
[2024-11-08 19:21:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:21:09,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389453681]
[2024-11-08 19:21:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:21:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-08 19:21:10,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:21:10,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389453681]
[2024-11-08 19:21:10,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389453681] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:21:10,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171584161]
[2024-11-08 19:21:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:10,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:10,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:10,295 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:10,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-08 19:21:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:10,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:10,391 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked.
[2024-11-08 19:21:10,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171584161] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:10,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:21:10,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2024-11-08 19:21:10,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827143540]
[2024-11-08 19:21:10,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:10,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 19:21:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:21:10,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 19:21:10,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2024-11-08 19:21:10,657 INFO L87 Difference]: Start difference. First operand 2026 states and 2499 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 19:21:10,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:10,916 INFO L93 Difference]: Finished difference Result 2037 states and 2512 transitions.
[2024-11-08 19:21:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 19:21:10,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 78
[2024-11-08 19:21:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:10,922 INFO L225 Difference]: With dead ends: 2037
[2024-11-08 19:21:10,922 INFO L226 Difference]: Without dead ends: 2032
[2024-11-08 19:21:10,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2024-11-08 19:21:10,927 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 4 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:10,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 167 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:21:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states.
[2024-11-08 19:21:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 2026.
[2024-11-08 19:21:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 2025 states have (on average 1.234074074074074) internal successors, (2499), 2025 states have internal predecessors, (2499), 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 19:21:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2499 transitions.
[2024-11-08 19:21:11,139 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2499 transitions. Word has length 78
[2024-11-08 19:21:11,139 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:11,139 INFO L471 AbstractCegarLoop]: Abstraction has 2026 states and 2499 transitions.
[2024-11-08 19:21:11,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 19:21:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2499 transitions.
[2024-11-08 19:21:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2024-11-08 19:21:11,142 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:11,142 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 19:21:11,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-08 19:21:11,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:11,343 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:11,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash -44273000, now seen corresponding path program 1 times
[2024-11-08 19:21:11,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:21:11,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426760834]
[2024-11-08 19:21:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:11,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:21:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 40 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 19:21:11,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:21:11,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426760834]
[2024-11-08 19:21:11,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426760834] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:21:11,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997330304]
[2024-11-08 19:21:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:11,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:11,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:11,672 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:11,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-08 19:21:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:12,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:12,090 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 40 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 19:21:12,365 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:21:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 19:21:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997330304] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:21:12,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:21:12,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16
[2024-11-08 19:21:12,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204937853]
[2024-11-08 19:21:12,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:21:12,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-08 19:21:12,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:21:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-08 19:21:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240
[2024-11-08 19:21:12,594 INFO L87 Difference]: Start difference. First operand 2026 states and 2499 transitions. Second operand has 16 states, 16 states have (on average 10.5625) internal successors, (169), 16 states have internal predecessors, (169), 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 19:21:15,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:15,514 INFO L93 Difference]: Finished difference Result 9331 states and 11398 transitions.
[2024-11-08 19:21:15,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2024-11-08 19:21:15,515 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.5625) internal successors, (169), 16 states have internal predecessors, (169), 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 79
[2024-11-08 19:21:15,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:15,528 INFO L225 Difference]: With dead ends: 9331
[2024-11-08 19:21:15,528 INFO L226 Difference]: Without dead ends: 9326
[2024-11-08 19:21:15,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=799, Invalid=2861, Unknown=0, NotChecked=0, Total=3660
[2024-11-08 19:21:15,531 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 857 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:15,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1304 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-08 19:21:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9326 states.
[2024-11-08 19:21:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9326 to 2820.
[2024-11-08 19:21:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2819 states have (on average 1.2983327421071302) internal successors, (3660), 2819 states have internal predecessors, (3660), 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 19:21:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3660 transitions.
[2024-11-08 19:21:15,850 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3660 transitions. Word has length 79
[2024-11-08 19:21:15,851 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:15,851 INFO L471 AbstractCegarLoop]: Abstraction has 2820 states and 3660 transitions.
[2024-11-08 19:21:15,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.5625) internal successors, (169), 16 states have internal predecessors, (169), 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 19:21:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3660 transitions.
[2024-11-08 19:21:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2024-11-08 19:21:15,854 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:15,854 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 19:21:15,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2024-11-08 19:21:16,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:16,055 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:16,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1554341851, now seen corresponding path program 1 times
[2024-11-08 19:21:16,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:21:16,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030865654]
[2024-11-08 19:21:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:21:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-08 19:21:17,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:21:17,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030865654]
[2024-11-08 19:21:17,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030865654] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:21:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31871279]
[2024-11-08 19:21:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:17,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:17,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:17,241 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:17,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-08 19:21:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:17,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:17,602 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked.
[2024-11-08 19:21:17,795 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:17,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31871279] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:17,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:21:17,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15
[2024-11-08 19:21:17,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980962497]
[2024-11-08 19:21:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:17,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 19:21:17,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:21:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 19:21:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210
[2024-11-08 19:21:17,800 INFO L87 Difference]: Start difference. First operand 2820 states and 3660 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 19:21:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:18,151 INFO L93 Difference]: Finished difference Result 2836 states and 3680 transitions.
[2024-11-08 19:21:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 19:21:18,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 79
[2024-11-08 19:21:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:18,160 INFO L225 Difference]: With dead ends: 2836
[2024-11-08 19:21:18,160 INFO L226 Difference]: Without dead ends: 2831
[2024-11-08 19:21:18,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210
[2024-11-08 19:21:18,162 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 2 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:18,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 175 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:21:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states.
[2024-11-08 19:21:18,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2826.
[2024-11-08 19:21:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2825 states have (on average 1.2984070796460176) internal successors, (3668), 2825 states have internal predecessors, (3668), 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 19:21:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3668 transitions.
[2024-11-08 19:21:18,443 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3668 transitions. Word has length 79
[2024-11-08 19:21:18,444 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:18,444 INFO L471 AbstractCegarLoop]: Abstraction has 2826 states and 3668 transitions.
[2024-11-08 19:21:18,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 19:21:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3668 transitions.
[2024-11-08 19:21:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2024-11-08 19:21:18,447 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:18,447 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:21:18,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2024-11-08 19:21:18,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2024-11-08 19:21:18,648 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:18,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:18,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1317114044, now seen corresponding path program 1 times
[2024-11-08 19:21:18,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:21:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269631795]
[2024-11-08 19:21:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:21:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-11-08 19:21:19,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:21:19,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269631795]
[2024-11-08 19:21:19,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269631795] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:21:19,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146553506]
[2024-11-08 19:21:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:19,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:19,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:19,071 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:19,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-08 19:21:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:19,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:19,406 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-11-08 19:21:19,607 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:21:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-11-08 19:21:19,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146553506] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:21:19,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:21:19,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19
[2024-11-08 19:21:19,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168914784]
[2024-11-08 19:21:19,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:21:19,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-11-08 19:21:19,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:21:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-11-08 19:21:19,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342
[2024-11-08 19:21:19,853 INFO L87 Difference]: Start difference. First operand 2826 states and 3668 transitions. Second operand has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 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 19:21:21,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:21,807 INFO L93 Difference]: Finished difference Result 5705 states and 7357 transitions.
[2024-11-08 19:21:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2024-11-08 19:21:21,808 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 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 80
[2024-11-08 19:21:21,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:21,818 INFO L225 Difference]: With dead ends: 5705
[2024-11-08 19:21:21,818 INFO L226 Difference]: Without dead ends: 5693
[2024-11-08 19:21:21,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=704, Invalid=2052, Unknown=0, NotChecked=0, Total=2756
[2024-11-08 19:21:21,821 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 548 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:21,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1027 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-08 19:21:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states.
[2024-11-08 19:21:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 3528.
[2024-11-08 19:21:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 1.3104621491352424) internal successors, (4622), 3527 states have internal predecessors, (4622), 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 19:21:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 4622 transitions.
[2024-11-08 19:21:22,263 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 4622 transitions. Word has length 80
[2024-11-08 19:21:22,264 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:22,264 INFO L471 AbstractCegarLoop]: Abstraction has 3528 states and 4622 transitions.
[2024-11-08 19:21:22,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 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 19:21:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 4622 transitions.
[2024-11-08 19:21:22,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2024-11-08 19:21:22,269 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:22,269 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:21:22,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-11-08 19:21:22,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2024-11-08 19:21:22,470 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:22,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:22,470 INFO L85 PathProgramCache]: Analyzing trace with hash 571674220, now seen corresponding path program 1 times
[2024-11-08 19:21:22,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:21:22,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890402816]
[2024-11-08 19:21:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:22,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:21:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 67 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 19:21:22,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:21:22,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890402816]
[2024-11-08 19:21:22,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890402816] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:21:22,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622681724]
[2024-11-08 19:21:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:22,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:22,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:22,800 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:22,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-08 19:21:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:23,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:23,662 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 67 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 19:21:23,791 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:21:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 50 proven. 23 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 19:21:23,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622681724] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:21:23,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:21:23,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14
[2024-11-08 19:21:23,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646785423]
[2024-11-08 19:21:23,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:21:23,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 19:21:23,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:21:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 19:21:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2024-11-08 19:21:23,941 INFO L87 Difference]: Start difference. First operand 3528 states and 4622 transitions. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 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 19:21:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:24,932 INFO L93 Difference]: Finished difference Result 6520 states and 8552 transitions.
[2024-11-08 19:21:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-08 19:21:24,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 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 81
[2024-11-08 19:21:24,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:24,938 INFO L225 Difference]: With dead ends: 6520
[2024-11-08 19:21:24,938 INFO L226 Difference]: Without dead ends: 4049
[2024-11-08 19:21:24,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600
[2024-11-08 19:21:24,941 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 426 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:24,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 552 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states.
[2024-11-08 19:21:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 2903.
[2024-11-08 19:21:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 1.3094417643004825) internal successors, (3800), 2902 states have internal predecessors, (3800), 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 19:21:25,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 3800 transitions.
[2024-11-08 19:21:25,238 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 3800 transitions. Word has length 81
[2024-11-08 19:21:25,238 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:25,238 INFO L471 AbstractCegarLoop]: Abstraction has 2903 states and 3800 transitions.
[2024-11-08 19:21:25,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 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 19:21:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 3800 transitions.
[2024-11-08 19:21:25,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2024-11-08 19:21:25,241 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:25,241 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:21:25,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-11-08 19:21:25,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:25,442 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:25,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1957877614, now seen corresponding path program 2 times
[2024-11-08 19:21:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:21:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659296056]
[2024-11-08 19:21:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:21:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 17 proven. 59 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-08 19:21:26,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:21:26,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659296056]
[2024-11-08 19:21:26,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659296056] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:21:26,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984965532]
[2024-11-08 19:21:26,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 19:21:26,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:26,092 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:26,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-08 19:21:26,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 19:21:26,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:21:26,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:26,372 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 59 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-11-08 19:21:26,586 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:21:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-08 19:21:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984965532] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:21:26,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:21:26,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21
[2024-11-08 19:21:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892141167]
[2024-11-08 19:21:26,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:21:26,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-11-08 19:21:26,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:21:26,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-11-08 19:21:26,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420
[2024-11-08 19:21:26,871 INFO L87 Difference]: Start difference. First operand 2903 states and 3800 transitions. Second operand has 21 states, 21 states have (on average 9.666666666666666) internal successors, (203), 21 states have internal predecessors, (203), 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 19:21:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:29,341 INFO L93 Difference]: Finished difference Result 7457 states and 9574 transitions.
[2024-11-08 19:21:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2024-11-08 19:21:29,341 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.666666666666666) internal successors, (203), 21 states have internal predecessors, (203), 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 81
[2024-11-08 19:21:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:29,346 INFO L225 Difference]: With dead ends: 7457
[2024-11-08 19:21:29,347 INFO L226 Difference]: Without dead ends: 7445
[2024-11-08 19:21:29,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=776, Invalid=3384, Unknown=0, NotChecked=0, Total=4160
[2024-11-08 19:21:29,349 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 417 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:29,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1911 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-08 19:21:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7445 states.
[2024-11-08 19:21:29,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 3801.
[2024-11-08 19:21:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3801 states, 3800 states have (on average 1.3305263157894738) internal successors, (5056), 3800 states have internal predecessors, (5056), 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 19:21:29,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 5056 transitions.
[2024-11-08 19:21:29,834 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 5056 transitions. Word has length 81
[2024-11-08 19:21:29,834 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:29,834 INFO L471 AbstractCegarLoop]: Abstraction has 3801 states and 5056 transitions.
[2024-11-08 19:21:29,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.666666666666666) internal successors, (203), 21 states have internal predecessors, (203), 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 19:21:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 5056 transitions.
[2024-11-08 19:21:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2024-11-08 19:21:29,839 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:29,839 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:21:29,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-11-08 19:21:30,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2024-11-08 19:21:30,040 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:30,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash 759178942, now seen corresponding path program 1 times
[2024-11-08 19:21:30,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:21:30,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626128414]
[2024-11-08 19:21:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:30,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:21:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 19:21:30,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-08 19:21:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 19:21:30,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-08 19:21:30,217 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-08 19:21:30,218 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-08 19:21:30,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2024-11-08 19:21:30,224 INFO L407 BasicCegarLoop]: Path program histogram: [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]
[2024-11-08 19:21:30,327 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-08 19:21:30,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 07:21:30 BoogieIcfgContainer
[2024-11-08 19:21:30,331 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-08 19:21:30,331 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-08 19:21:30,332 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-08 19:21:30,332 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-08 19:21:30,332 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:20:20" (3/4) ...
[2024-11-08 19:21:30,335 INFO L145 WitnessPrinter]: No result that supports witness generation found
[2024-11-08 19:21:30,337 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-08 19:21:30,337 INFO L158 Benchmark]: Toolchain (without parser) took 70825.23ms. Allocated memory was 132.1MB in the beginning and 866.1MB in the end (delta: 734.0MB). Free memory was 96.3MB in the beginning and 801.8MB in the end (delta: -705.5MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB.
[2024-11-08 19:21:30,338 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory was 78.6MB in the beginning and 78.4MB in the end (delta: 144.2kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 19:21:30,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.72ms. Allocated memory is still 132.1MB. Free memory was 95.9MB in the beginning and 81.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2024-11-08 19:21:30,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.68ms. Allocated memory is still 132.1MB. Free memory was 80.9MB in the beginning and 78.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 19:21:30,339 INFO L158 Benchmark]: Boogie Preprocessor took 64.45ms. Allocated memory is still 132.1MB. Free memory was 78.1MB in the beginning and 75.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-11-08 19:21:30,339 INFO L158 Benchmark]: RCFGBuilder took 694.08ms. Allocated memory is still 132.1MB. Free memory was 75.0MB in the beginning and 52.3MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
[2024-11-08 19:21:30,341 INFO L158 Benchmark]: TraceAbstraction took 69548.18ms. Allocated memory was 132.1MB in the beginning and 866.1MB in the end (delta: 734.0MB). Free memory was 51.5MB in the beginning and 801.8MB in the end (delta: -750.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 19:21:30,342 INFO L158 Benchmark]: Witness Printer took 5.38ms. Allocated memory is still 866.1MB. Free memory is still 801.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 19:21:30,343 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory was 78.6MB in the beginning and 78.4MB in the end (delta: 144.2kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 446.72ms. Allocated memory is still 132.1MB. Free memory was 95.9MB in the beginning and 81.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 55.68ms. Allocated memory is still 132.1MB. Free memory was 80.9MB in the beginning and 78.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 64.45ms. Allocated memory is still 132.1MB. Free memory was 78.1MB in the beginning and 75.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* RCFGBuilder took 694.08ms. Allocated memory is still 132.1MB. Free memory was 75.0MB in the beginning and 52.3MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
* TraceAbstraction took 69548.18ms. Allocated memory was 132.1MB in the beginning and 866.1MB in the end (delta: 734.0MB). Free memory was 51.5MB in the beginning and 801.8MB in the end (delta: -750.3MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 5.38ms. Allocated memory is still 866.1MB. Free memory is still 801.8MB. There was no memory consumed. 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: 25]: 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 bitwiseOr at line 116.
Possible FailurePath:
[L124] unsigned int a, b, r;
[L126] b = __VERIFIER_nondet_uint()
[L128] a = 234770789
[L130] CALL, EXPR mp_add(a, b)
[L42] unsigned char a0, a1, a2, a3;
[L43] unsigned char b0, b1, b2, b3;
[L44] unsigned char r0, r1, r2, r3;
[L45] unsigned short carry;
[L46] unsigned short partial_sum;
[L47] unsigned int r;
[L48] unsigned char i;
[L49] unsigned char na, nb;
[L50] a0 = a
[L51] a1 = a >> 8
[L52] a2 = a >> 16U
[L53] a3 = a >> 24U
[L54] b0 = b
[L55] b1 = b >> 8U
[L56] b2 = b >> 16U
[L57] b3 = b >> 24U
[L58] na = (unsigned char)4
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4]
[L59] COND FALSE !(a3 == (unsigned char)0)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4]
[L68] nb = (unsigned char)4
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4, nb=4]
[L69] COND TRUE b3 == (unsigned char)0
[L70] nb = nb - 1
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4, nb=3]
[L71] COND TRUE b2 == (unsigned char)0
[L72] nb = nb - 1
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4, nb=2]
[L73] COND TRUE b1 == (unsigned char)0
[L74] nb = nb - 1
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4, nb=1]
[L78] carry = (unsigned short)0
[L79] i = (unsigned char)0
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1]
[L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0))
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1]
[L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0)
[L81] partial_sum = carry
[L82] carry = (unsigned short)0
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=0]
[L83] COND TRUE i < na
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=0]
[L84] COND TRUE i == (unsigned char)0
[L84] partial_sum = partial_sum + a0
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101]
[L85] COND FALSE !(i == (unsigned char)1)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101]
[L86] COND FALSE !(i == (unsigned char)2)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101]
[L87] COND FALSE !(i == (unsigned char)3)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101]
[L89] COND TRUE i < nb
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101]
[L90] COND TRUE i == (unsigned char)0
[L90] partial_sum = partial_sum + b0
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=256]
[L91] COND FALSE !(i == (unsigned char)1)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=256]
[L92] COND FALSE !(i == (unsigned char)2)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=256]
[L93] COND FALSE !(i == (unsigned char)3)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=256]
[L95] COND TRUE partial_sum > ((unsigned char)255)
[L96] partial_sum = partial_sum & ((unsigned char)255)
[L97] carry = (unsigned short)1
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0]
[L99] COND TRUE i == (unsigned char)0
[L99] r0 = (unsigned char)partial_sum
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0]
[L100] COND FALSE !(i == (unsigned char)1)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0]
[L101] COND FALSE !(i == (unsigned char)2)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0]
[L102] COND FALSE !(i == (unsigned char)3)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0]
[L104] i = i + (unsigned char)1
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=1, na=4, nb=1, partial_sum=0, r0=0]
[L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0))
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=1, na=4, nb=1, partial_sum=0, r0=0]
[L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0)
[L81] partial_sum = carry
[L82] carry = (unsigned short)0
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=0]
[L83] COND TRUE i < na
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=0]
[L84] COND FALSE !(i == (unsigned char)0)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=0]
[L85] COND TRUE i == (unsigned char)1
[L85] partial_sum = partial_sum + a1
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0]
[L86] COND FALSE !(i == (unsigned char)2)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0]
[L87] COND FALSE !(i == (unsigned char)3)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0]
[L89] COND FALSE !(i < nb)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0]
[L95] COND FALSE !(partial_sum > ((unsigned char)255))
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0]
[L99] COND FALSE !(i == (unsigned char)0)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0]
[L100] COND TRUE i == (unsigned char)1
[L100] r1 = (unsigned char)partial_sum
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0, r1=82]
[L101] COND FALSE !(i == (unsigned char)2)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0, r1=82]
[L102] COND FALSE !(i == (unsigned char)3)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0, r1=82]
[L104] i = i + (unsigned char)1
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=82, r0=0, r1=82]
[L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0))
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=82, r0=0, r1=82]
[L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0)
[L81] partial_sum = carry
[L82] carry = (unsigned short)0
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82]
[L83] COND TRUE i < na
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82]
[L84] COND FALSE !(i == (unsigned char)0)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82]
[L85] COND FALSE !(i == (unsigned char)1)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82]
[L86] COND TRUE i == (unsigned char)2
[L86] partial_sum = partial_sum + a2
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82]
[L87] COND FALSE !(i == (unsigned char)3)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82]
[L89] COND FALSE !(i < nb)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82]
[L95] COND FALSE !(partial_sum > ((unsigned char)255))
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82]
[L99] COND FALSE !(i == (unsigned char)0)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82]
[L100] COND FALSE !(i == (unsigned char)1)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82]
[L101] COND TRUE i == (unsigned char)2
[L101] r2 = (unsigned char)partial_sum
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254]
[L102] COND FALSE !(i == (unsigned char)3)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254]
[L104] i = i + (unsigned char)1
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254]
[L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0))
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254]
[L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0)
[L81] partial_sum = carry
[L82] carry = (unsigned short)0
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254]
[L83] COND TRUE i < na
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254]
[L84] COND FALSE !(i == (unsigned char)0)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254]
[L85] COND FALSE !(i == (unsigned char)1)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254]
[L86] COND FALSE !(i == (unsigned char)2)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254]
[L87] COND TRUE i == (unsigned char)3
[L87] partial_sum = partial_sum + a3
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254]
[L89] COND FALSE !(i < nb)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254]
[L95] COND FALSE !(partial_sum > ((unsigned char)255))
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254]
[L99] COND FALSE !(i == (unsigned char)0)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254]
[L100] COND FALSE !(i == (unsigned char)1)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254]
[L101] COND FALSE !(i == (unsigned char)2)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254]
[L102] COND TRUE i == (unsigned char)3
[L102] r3 = (unsigned char)partial_sum
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, r0=0, r1=82, r2=254, r3=13]
[L104] i = i + (unsigned char)1
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=4, na=4, nb=1, r0=0, r1=82, r2=254, r3=13]
[L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, i=4, r0=0, r1=82, r2=254, r3=13]
[L107] COND TRUE i < (unsigned char)4
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, r0=0, r1=82, r2=254, r3=13]
[L116] EXPR r0 | (r1 << 8U)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, r2=254, r3=13]
[L116] EXPR r0 | (r1 << 8U) | (r2 << 16U)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, r3=13]
[L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U)
VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0]
[L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U)
[L118] return r;
VAL [\result=218103808, a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0]
[L130] RET, EXPR mp_add(a, b)
[L130] r = mp_add(a, b)
[L132] CALL __VERIFIER_assert(r == a + b)
[L24] COND TRUE !(cond)
[L25] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.3s, OverallIterations: 27, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 38.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6920 SdHoareTripleChecker+Valid, 13.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6920 mSDsluCounter, 15304 SdHoareTripleChecker+Invalid, 11.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12524 mSDsCounter, 407 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10552 IncrementalHoareTripleChecker+Invalid, 10959 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 407 mSolverCounterUnsat, 2780 mSDtfsCounter, 10552 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2569 GetRequests, 1885 SyntacticMatches, 8 SemanticMatches, 676 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14192 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3801occurred in iteration=26, InterpolantAutomatonStates: 553, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 26 MinimizatonAttempts, 29512 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 2827 NumberOfCodeBlocks, 2827 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 3470 ConstructedInterpolants, 19 QuantifiedInterpolants, 21626 SizeOfPredicates, 43 NumberOfNonLiveVariables, 3153 ConjunctsInSsa, 240 ConjunctsInUnsatCore, 53 InterpolantComputations, 16 PerfectInterpolantSequences, 2273/3680 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 19:21:30,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/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 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 19:21:32,826 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 19:21:32,909 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-08 19:21:32,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 19:21:32,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 19:21:32,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 19:21:32,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 19:21:32,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 19:21:32,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 19:21:32,946 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 19:21:32,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 19:21:32,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 19:21:32,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 19:21:32,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 19:21:32,948 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 19:21:32,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 19:21:32,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 19:21:32,950 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 19:21:32,950 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 19:21:32,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 19:21:32,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 19:21:32,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 19:21:32,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 19:21:32,954 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 19:21:32,954 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-08 19:21:32,954 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 19:21:32,955 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-08 19:21:32,955 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 19:21:32,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 19:21:32,955 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 19:21:32,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 19:21:32,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 19:21:32,956 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 19:21:32,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 19:21:32,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 19:21:32,957 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 19:21:32,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 19:21:32,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 19:21:32,958 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-08 19:21:32,958 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-08 19:21:32,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 19:21:32,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 19:21:32,960 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 19:21:32,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 19:21:32,961 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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80
[2024-11-08 19:21:33,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 19:21:33,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 19:21:33,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 19:21:33,455 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 19:21:33,455 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 19:21:33,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/bitvector/byte_add_1-1.i
Unable to find full path for "g++"
[2024-11-08 19:21:35,508 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 19:21:35,768 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 19:21:35,768 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/sv-benchmarks/c/bitvector/byte_add_1-1.i
[2024-11-08 19:21:35,777 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/data/8f44c88b2/5f6cc8ca8fc44ad199338918caa84692/FLAGc7cd36b73
[2024-11-08 19:21:35,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/data/8f44c88b2/5f6cc8ca8fc44ad199338918caa84692
[2024-11-08 19:21:35,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 19:21:35,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 19:21:35,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 19:21:35,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 19:21:35,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 19:21:35,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:21:35" (1/1) ...
[2024-11-08 19:21:35,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c11e6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:35, skipping insertion in model container
[2024-11-08 19:21:35,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:21:35" (1/1) ...
[2024-11-08 19:21:35,839 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 19:21:36,083 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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181]
[2024-11-08 19:21:36,162 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 19:21:36,197 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 19:21:36,216 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_9226e856-aca2-48c2-8b22-2eb6a4b2656a/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181]
[2024-11-08 19:21:36,280 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 19:21:36,303 INFO L204 MainTranslator]: Completed translation
[2024-11-08 19:21:36,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36 WrapperNode
[2024-11-08 19:21:36,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 19:21:36,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 19:21:36,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 19:21:36,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 19:21:36,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,356 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 121
[2024-11-08 19:21:36,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 19:21:36,360 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 19:21:36,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 19:21:36,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 19:21:36,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,408 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 19:21:36,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,415 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 19:21:36,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 19:21:36,441 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 19:21:36,441 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 19:21:36,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (1/1) ...
[2024-11-08 19:21:36,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 19:21:36,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:36,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 19:21:36,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 19:21:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 19:21:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-08 19:21:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 19:21:36,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 19:21:36,631 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 19:21:36,636 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 19:21:37,112 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live.
[2024-11-08 19:21:37,113 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 19:21:37,126 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 19:21:37,127 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 19:21:37,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:21:37 BoogieIcfgContainer
[2024-11-08 19:21:37,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 19:21:37,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 19:21:37,130 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 19:21:37,133 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 19:21:37,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:21:35" (1/3) ...
[2024-11-08 19:21:37,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4106c595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:21:37, skipping insertion in model container
[2024-11-08 19:21:37,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:21:36" (2/3) ...
[2024-11-08 19:21:37,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4106c595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:21:37, skipping insertion in model container
[2024-11-08 19:21:37,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:21:37" (3/3) ...
[2024-11-08 19:21:37,137 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i
[2024-11-08 19:21:37,157 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 19:21:37,157 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 19:21:37,221 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 19:21:37,228 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;@17673d3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 19:21:37,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 19:21:37,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 43 states have internal predecessors, (73), 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 19:21:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-11-08 19:21:37,240 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:37,241 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:21:37,242 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:37,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times
[2024-11-08 19:21:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507979306]
[2024-11-08 19:21:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:37,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:37,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:37,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:37,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 19:21:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:37,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:37,386 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:37,440 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 19:21:37,440 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:37,441 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:37,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507979306]
[2024-11-08 19:21:37,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507979306] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:37,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:37,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 19:21:37,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167461844]
[2024-11-08 19:21:37,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:37,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 19:21:37,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 19:21:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:21:37,485 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 43 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 19:21:37,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:37,760 INFO L93 Difference]: Finished difference Result 103 states and 178 transitions.
[2024-11-08 19:21:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 19:21:37,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12
[2024-11-08 19:21:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:37,775 INFO L225 Difference]: With dead ends: 103
[2024-11-08 19:21:37,776 INFO L226 Difference]: Without dead ends: 65
[2024-11-08 19:21:37,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:21:37,786 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:37,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 67 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-11-08 19:21:37,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63.
[2024-11-08 19:21:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 62 states have internal predecessors, (96), 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 19:21:37,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 96 transitions.
[2024-11-08 19:21:37,843 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 96 transitions. Word has length 12
[2024-11-08 19:21:37,844 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:37,844 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 96 transitions.
[2024-11-08 19:21:37,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 19:21:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 96 transitions.
[2024-11-08 19:21:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-11-08 19:21:37,848 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:37,848 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:21:37,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-08 19:21:38,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:38,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:38,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash 816367616, now seen corresponding path program 1 times
[2024-11-08 19:21:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:38,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391536289]
[2024-11-08 19:21:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:38,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:38,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:38,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:38,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 19:21:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:38,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:38,148 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:38,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:38,203 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391536289]
[2024-11-08 19:21:38,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391536289] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:38,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:21:38,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583761494]
[2024-11-08 19:21:38,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:38,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:21:38,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:38,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:21:38,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:21:38,210 INFO L87 Difference]: Start difference. First operand 63 states and 96 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19:21:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:38,466 INFO L93 Difference]: Finished difference Result 168 states and 263 transitions.
[2024-11-08 19:21:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 19:21:38,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19
[2024-11-08 19:21:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:38,468 INFO L225 Difference]: With dead ends: 168
[2024-11-08 19:21:38,468 INFO L226 Difference]: Without dead ends: 115
[2024-11-08 19:21:38,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:21:38,472 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 56 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:38,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 154 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2024-11-08 19:21:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111.
[2024-11-08 19:21:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.5272727272727273) internal successors, (168), 110 states have internal predecessors, (168), 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 19:21:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 168 transitions.
[2024-11-08 19:21:38,502 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 168 transitions. Word has length 19
[2024-11-08 19:21:38,502 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:38,502 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 168 transitions.
[2024-11-08 19:21:38,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19:21:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 168 transitions.
[2024-11-08 19:21:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-08 19:21:38,504 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:38,504 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:21:38,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 19:21:38,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:38,705 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:38,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:38,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1286387454, now seen corresponding path program 1 times
[2024-11-08 19:21:38,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:38,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140682435]
[2024-11-08 19:21:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:38,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:38,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:38,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:38,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 19:21:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:38,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:38,781 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 19:21:38,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:38,805 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:38,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140682435]
[2024-11-08 19:21:38,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140682435] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:38,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:38,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 19:21:38,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259536461]
[2024-11-08 19:21:38,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:38,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 19:21:38,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:38,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 19:21:38,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:21:38,811 INFO L87 Difference]: Start difference. First operand 111 states and 168 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 19:21:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:38,833 INFO L93 Difference]: Finished difference Result 116 states and 172 transitions.
[2024-11-08 19:21:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 19:21:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20
[2024-11-08 19:21:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:38,835 INFO L225 Difference]: With dead ends: 116
[2024-11-08 19:21:38,835 INFO L226 Difference]: Without dead ends: 56
[2024-11-08 19:21:38,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:21:38,836 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 46 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:38,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 52 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 19:21:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2024-11-08 19:21:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2024-11-08 19:21:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 55 states have internal predecessors, (79), 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 19:21:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions.
[2024-11-08 19:21:38,851 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 20
[2024-11-08 19:21:38,851 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:38,851 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions.
[2024-11-08 19:21:38,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 19:21:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions.
[2024-11-08 19:21:38,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-11-08 19:21:38,853 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:38,854 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:21:38,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 19:21:39,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:39,055 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:39,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:39,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1983481684, now seen corresponding path program 1 times
[2024-11-08 19:21:39,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:39,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502011914]
[2024-11-08 19:21:39,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:39,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:39,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:39,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:39,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 19:21:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:39,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:39,131 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:39,156 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:39,157 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502011914]
[2024-11-08 19:21:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502011914] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:39,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:39,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 19:21:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267147042]
[2024-11-08 19:21:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:39,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 19:21:39,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:39,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 19:21:39,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:21:39,160 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 19:21:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:39,188 INFO L93 Difference]: Finished difference Result 74 states and 102 transitions.
[2024-11-08 19:21:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 19:21:39,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26
[2024-11-08 19:21:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:39,191 INFO L225 Difference]: With dead ends: 74
[2024-11-08 19:21:39,191 INFO L226 Difference]: Without dead ends: 68
[2024-11-08 19:21:39,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 19:21:39,193 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:39,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 94 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 19:21:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2024-11-08 19:21:39,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2024-11-08 19:21:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 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 19:21:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions.
[2024-11-08 19:21:39,209 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 26
[2024-11-08 19:21:39,209 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:39,212 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions.
[2024-11-08 19:21:39,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 19:21:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions.
[2024-11-08 19:21:39,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-11-08 19:21:39,213 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:39,213 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:21:39,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 19:21:39,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:39,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:39,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:39,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1725316246, now seen corresponding path program 1 times
[2024-11-08 19:21:39,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:39,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950980685]
[2024-11-08 19:21:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:39,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:39,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:39,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:39,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 19:21:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:39,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:39,486 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:39,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:39,609 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:39,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950980685]
[2024-11-08 19:21:39,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950980685] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:39,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:39,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:21:39,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741255938]
[2024-11-08 19:21:39,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:39,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:21:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:21:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:21:39,612 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 19:21:39,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:39,805 INFO L93 Difference]: Finished difference Result 187 states and 263 transitions.
[2024-11-08 19:21:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 19:21:39,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26
[2024-11-08 19:21:39,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:39,807 INFO L225 Difference]: With dead ends: 187
[2024-11-08 19:21:39,808 INFO L226 Difference]: Without dead ends: 131
[2024-11-08 19:21:39,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:21:39,810 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:39,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 103 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:39,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2024-11-08 19:21:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123.
[2024-11-08 19:21:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4262295081967213) internal successors, (174), 122 states have internal predecessors, (174), 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 19:21:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 174 transitions.
[2024-11-08 19:21:39,838 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 174 transitions. Word has length 26
[2024-11-08 19:21:39,838 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:39,839 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 174 transitions.
[2024-11-08 19:21:39,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 19:21:39,839 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 174 transitions.
[2024-11-08 19:21:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2024-11-08 19:21:39,840 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:39,840 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:21:39,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 19:21:40,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:40,041 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:40,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:40,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1587033851, now seen corresponding path program 1 times
[2024-11-08 19:21:40,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:40,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158327030]
[2024-11-08 19:21:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:40,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:40,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:40,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:40,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 19:21:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:40,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:40,122 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:40,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:40,231 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:40,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158327030]
[2024-11-08 19:21:40,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158327030] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:40,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:40,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 19:21:40,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696401360]
[2024-11-08 19:21:40,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:40,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 19:21:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:40,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 19:21:40,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:21:40,240 INFO L87 Difference]: Start difference. First operand 123 states and 174 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 19:21:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:40,482 INFO L93 Difference]: Finished difference Result 242 states and 342 transitions.
[2024-11-08 19:21:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 19:21:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27
[2024-11-08 19:21:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:40,484 INFO L225 Difference]: With dead ends: 242
[2024-11-08 19:21:40,484 INFO L226 Difference]: Without dead ends: 186
[2024-11-08 19:21:40,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:21:40,485 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 77 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:40,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 198 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:40,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states.
[2024-11-08 19:21:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 123.
[2024-11-08 19:21:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4262295081967213) internal successors, (174), 122 states have internal predecessors, (174), 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 19:21:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 174 transitions.
[2024-11-08 19:21:40,498 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 174 transitions. Word has length 27
[2024-11-08 19:21:40,499 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:40,499 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 174 transitions.
[2024-11-08 19:21:40,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 19:21:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 174 transitions.
[2024-11-08 19:21:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-11-08 19:21:40,500 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:40,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:21:40,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-08 19:21:40,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:40,701 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:40,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:40,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1888525619, now seen corresponding path program 1 times
[2024-11-08 19:21:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:40,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45460786]
[2024-11-08 19:21:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:40,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:40,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:40,705 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:40,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 19:21:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:40,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:40,786 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:40,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:40,887 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:40,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45460786]
[2024-11-08 19:21:40,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45460786] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:40,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:40,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:21:40,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565117807]
[2024-11-08 19:21:40,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:40,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:21:40,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:40,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:21:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:21:40,890 INFO L87 Difference]: Start difference. First operand 123 states and 174 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 19:21:41,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:41,099 INFO L93 Difference]: Finished difference Result 297 states and 421 transitions.
[2024-11-08 19:21:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 19:21:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 28
[2024-11-08 19:21:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:41,101 INFO L225 Difference]: With dead ends: 297
[2024-11-08 19:21:41,101 INFO L226 Difference]: Without dead ends: 241
[2024-11-08 19:21:41,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:21:41,103 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 126 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:41,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 350 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states.
[2024-11-08 19:21:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 123.
[2024-11-08 19:21:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4262295081967213) internal successors, (174), 122 states have internal predecessors, (174), 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 19:21:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 174 transitions.
[2024-11-08 19:21:41,117 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 174 transitions. Word has length 28
[2024-11-08 19:21:41,117 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:41,118 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 174 transitions.
[2024-11-08 19:21:41,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 19:21:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 174 transitions.
[2024-11-08 19:21:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-11-08 19:21:41,119 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:41,119 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:21:41,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-08 19:21:41,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:41,320 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:41,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:41,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1669670901, now seen corresponding path program 1 times
[2024-11-08 19:21:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:41,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090433697]
[2024-11-08 19:21:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:41,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:41,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:41,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:41,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 19:21:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:41,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:41,388 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:41,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:41,487 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:41,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090433697]
[2024-11-08 19:21:41,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090433697] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:41,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:41,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-08 19:21:41,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314745436]
[2024-11-08 19:21:41,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:41,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 19:21:41,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:41,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 19:21:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2024-11-08 19:21:41,490 INFO L87 Difference]: Start difference. First operand 123 states and 174 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 19:21:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:41,706 INFO L93 Difference]: Finished difference Result 291 states and 411 transitions.
[2024-11-08 19:21:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 19:21:41,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 28
[2024-11-08 19:21:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:41,709 INFO L225 Difference]: With dead ends: 291
[2024-11-08 19:21:41,709 INFO L226 Difference]: Without dead ends: 234
[2024-11-08 19:21:41,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2024-11-08 19:21:41,711 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 153 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:41,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 455 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:41,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states.
[2024-11-08 19:21:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 115.
[2024-11-08 19:21:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4035087719298245) internal successors, (160), 114 states have internal predecessors, (160), 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 19:21:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 160 transitions.
[2024-11-08 19:21:41,734 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 160 transitions. Word has length 28
[2024-11-08 19:21:41,735 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:41,735 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 160 transitions.
[2024-11-08 19:21:41,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 19:21:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 160 transitions.
[2024-11-08 19:21:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-11-08 19:21:41,736 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:41,736 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:21:41,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-08 19:21:41,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:41,937 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:41,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:41,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1350015906, now seen corresponding path program 1 times
[2024-11-08 19:21:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:41,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213480451]
[2024-11-08 19:21:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:41,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:41,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:41,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:41,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 19:21:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:42,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:42,010 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:42,066 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:21:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:42,141 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:42,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213480451]
[2024-11-08 19:21:42,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213480451] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:21:42,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:21:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2024-11-08 19:21:42,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015431167]
[2024-11-08 19:21:42,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:21:42,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:21:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:21:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:21:42,143 INFO L87 Difference]: Start difference. First operand 115 states and 160 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 19:21:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:42,443 INFO L93 Difference]: Finished difference Result 436 states and 646 transitions.
[2024-11-08 19:21:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 19:21:42,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 30
[2024-11-08 19:21:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:42,445 INFO L225 Difference]: With dead ends: 436
[2024-11-08 19:21:42,446 INFO L226 Difference]: Without dead ends: 320
[2024-11-08 19:21:42,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2024-11-08 19:21:42,448 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 98 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:42,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 52 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 19:21:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states.
[2024-11-08 19:21:42,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 237.
[2024-11-08 19:21:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.4533898305084745) internal successors, (343), 236 states have internal predecessors, (343), 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 19:21:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 343 transitions.
[2024-11-08 19:21:42,474 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 343 transitions. Word has length 30
[2024-11-08 19:21:42,474 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:42,475 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 343 transitions.
[2024-11-08 19:21:42,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 19:21:42,475 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 343 transitions.
[2024-11-08 19:21:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2024-11-08 19:21:42,483 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:42,483 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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]
[2024-11-08 19:21:42,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-08 19:21:42,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:42,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:42,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash -756196901, now seen corresponding path program 1 times
[2024-11-08 19:21:42,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:42,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038740022]
[2024-11-08 19:21:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:42,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:42,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:42,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:42,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 19:21:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:42,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:42,807 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 19:21:42,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:42,852 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038740022]
[2024-11-08 19:21:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038740022] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:42,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:42,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:21:42,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349427022]
[2024-11-08 19:21:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:42,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:21:42,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:42,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:21:42,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:21:42,856 INFO L87 Difference]: Start difference. First operand 237 states and 343 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 19:21:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:42,990 INFO L93 Difference]: Finished difference Result 641 states and 923 transitions.
[2024-11-08 19:21:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 19:21:42,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 68
[2024-11-08 19:21:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:42,994 INFO L225 Difference]: With dead ends: 641
[2024-11-08 19:21:42,994 INFO L226 Difference]: Without dead ends: 421
[2024-11-08 19:21:42,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:21:42,996 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 28 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:42,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 163 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:21:42,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states.
[2024-11-08 19:21:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 333.
[2024-11-08 19:21:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.463855421686747) internal successors, (486), 332 states have internal predecessors, (486), 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 19:21:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 486 transitions.
[2024-11-08 19:21:43,026 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 486 transitions. Word has length 68
[2024-11-08 19:21:43,026 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:43,026 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 486 transitions.
[2024-11-08 19:21:43,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 19:21:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 486 transitions.
[2024-11-08 19:21:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2024-11-08 19:21:43,029 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:43,029 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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]
[2024-11-08 19:21:43,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-11-08 19:21:43,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:43,234 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:43,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash -694157287, now seen corresponding path program 2 times
[2024-11-08 19:21:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:43,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583769473]
[2024-11-08 19:21:43,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 19:21:43,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:43,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:43,238 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:43,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-08 19:21:43,315 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 19:21:43,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:21:43,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:43,319 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2024-11-08 19:21:43,409 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:43,409 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:43,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583769473]
[2024-11-08 19:21:43,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583769473] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:43,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:43,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:21:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490366921]
[2024-11-08 19:21:43,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:43,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:21:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:43,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:21:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:21:43,412 INFO L87 Difference]: Start difference. First operand 333 states and 486 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 19:21:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:43,557 INFO L93 Difference]: Finished difference Result 694 states and 1020 transitions.
[2024-11-08 19:21:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 19:21:43,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 68
[2024-11-08 19:21:43,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:43,560 INFO L225 Difference]: With dead ends: 694
[2024-11-08 19:21:43,560 INFO L226 Difference]: Without dead ends: 513
[2024-11-08 19:21:43,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:21:43,561 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 28 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:43,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 95 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:21:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states.
[2024-11-08 19:21:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513.
[2024-11-08 19:21:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.46875) internal successors, (752), 512 states have internal predecessors, (752), 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 19:21:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 752 transitions.
[2024-11-08 19:21:43,595 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 752 transitions. Word has length 68
[2024-11-08 19:21:43,595 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:43,595 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 752 transitions.
[2024-11-08 19:21:43,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 19:21:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 752 transitions.
[2024-11-08 19:21:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2024-11-08 19:21:43,597 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:43,598 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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]
[2024-11-08 19:21:43,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-08 19:21:43,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:43,802 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:43,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:43,803 INFO L85 PathProgramCache]: Analyzing trace with hash 828272234, now seen corresponding path program 1 times
[2024-11-08 19:21:43,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:43,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947709549]
[2024-11-08 19:21:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:43,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:43,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:43,805 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:43,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-08 19:21:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:43,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:43,881 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 48 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 19:21:44,146 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:21:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:44,540 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947709549]
[2024-11-08 19:21:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947709549] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:21:44,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:21:44,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12
[2024-11-08 19:21:44,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105885548]
[2024-11-08 19:21:44,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:21:44,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 19:21:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 19:21:44,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132
[2024-11-08 19:21:44,543 INFO L87 Difference]: Start difference. First operand 513 states and 752 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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 19:21:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:44,909 INFO L93 Difference]: Finished difference Result 1096 states and 1631 transitions.
[2024-11-08 19:21:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-08 19:21:44,910 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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 69
[2024-11-08 19:21:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:44,913 INFO L225 Difference]: With dead ends: 1096
[2024-11-08 19:21:44,913 INFO L226 Difference]: Without dead ends: 604
[2024-11-08 19:21:44,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240
[2024-11-08 19:21:44,915 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 187 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:44,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 77 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:44,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states.
[2024-11-08 19:21:44,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 545.
[2024-11-08 19:21:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.3584558823529411) internal successors, (739), 544 states have internal predecessors, (739), 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 19:21:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 739 transitions.
[2024-11-08 19:21:44,954 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 739 transitions. Word has length 69
[2024-11-08 19:21:44,955 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:44,955 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 739 transitions.
[2024-11-08 19:21:44,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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 19:21:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 739 transitions.
[2024-11-08 19:21:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2024-11-08 19:21:44,957 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:44,957 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:21:44,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-08 19:21:45,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:45,161 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:45,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash -493746250, now seen corresponding path program 1 times
[2024-11-08 19:21:45,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:45,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233539397]
[2024-11-08 19:21:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:45,164 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:45,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-08 19:21:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:45,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:45,246 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2024-11-08 19:21:45,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:45,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:45,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233539397]
[2024-11-08 19:21:45,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233539397] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:45,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:45,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 19:21:45,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517526454]
[2024-11-08 19:21:45,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:45,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 19:21:45,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 19:21:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:21:45,340 INFO L87 Difference]: Start difference. First operand 545 states and 739 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 19:21:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:45,521 INFO L93 Difference]: Finished difference Result 930 states and 1263 transitions.
[2024-11-08 19:21:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 19:21:45,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 73
[2024-11-08 19:21:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:45,527 INFO L225 Difference]: With dead ends: 930
[2024-11-08 19:21:45,527 INFO L226 Difference]: Without dead ends: 737
[2024-11-08 19:21:45,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:21:45,529 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 63 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:45,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 178 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:21:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states.
[2024-11-08 19:21:45,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 545.
[2024-11-08 19:21:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.3584558823529411) internal successors, (739), 544 states have internal predecessors, (739), 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 19:21:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 739 transitions.
[2024-11-08 19:21:45,570 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 739 transitions. Word has length 73
[2024-11-08 19:21:45,571 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:45,571 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 739 transitions.
[2024-11-08 19:21:45,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 19:21:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 739 transitions.
[2024-11-08 19:21:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2024-11-08 19:21:45,573 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:45,573 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:21:45,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-11-08 19:21:45,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:45,774 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:45,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1602204690, now seen corresponding path program 1 times
[2024-11-08 19:21:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441592433]
[2024-11-08 19:21:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:45,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:45,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:45,777 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:45,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-08 19:21:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:45,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:45,854 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2024-11-08 19:21:45,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:21:45,951 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:45,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441592433]
[2024-11-08 19:21:45,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441592433] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:21:45,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:21:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:21:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226570158]
[2024-11-08 19:21:45,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:21:45,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:21:45,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:45,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:21:45,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:21:45,954 INFO L87 Difference]: Start difference. First operand 545 states and 739 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 19:21:46,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:46,146 INFO L93 Difference]: Finished difference Result 930 states and 1262 transitions.
[2024-11-08 19:21:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 19:21:46,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 74
[2024-11-08 19:21:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:46,150 INFO L225 Difference]: With dead ends: 930
[2024-11-08 19:21:46,150 INFO L226 Difference]: Without dead ends: 737
[2024-11-08 19:21:46,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:21:46,152 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 98 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:46,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 334 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:21:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states.
[2024-11-08 19:21:46,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 353.
[2024-11-08 19:21:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3551136363636365) internal successors, (477), 352 states have internal predecessors, (477), 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 19:21:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 477 transitions.
[2024-11-08 19:21:46,184 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 477 transitions. Word has length 74
[2024-11-08 19:21:46,184 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:46,185 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 477 transitions.
[2024-11-08 19:21:46,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 19:21:46,185 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 477 transitions.
[2024-11-08 19:21:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2024-11-08 19:21:46,188 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:46,188 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:21:46,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2024-11-08 19:21:46,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:46,389 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:46,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1738822448, now seen corresponding path program 1 times
[2024-11-08 19:21:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662223388]
[2024-11-08 19:21:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:21:46,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:46,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:46,393 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:46,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-08 19:21:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:21:46,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:46,475 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 58 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-11-08 19:21:46,583 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:21:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 53 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-11-08 19:21:46,701 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:46,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662223388]
[2024-11-08 19:21:46,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662223388] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:21:46,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:21:46,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-08 19:21:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185554828]
[2024-11-08 19:21:46,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:21:46,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 19:21:46,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:46,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 19:21:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2024-11-08 19:21:46,709 INFO L87 Difference]: Start difference. First operand 353 states and 477 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 19:21:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:47,095 INFO L93 Difference]: Finished difference Result 669 states and 865 transitions.
[2024-11-08 19:21:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-08 19:21:47,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 74
[2024-11-08 19:21:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:47,098 INFO L225 Difference]: With dead ends: 669
[2024-11-08 19:21:47,098 INFO L226 Difference]: Without dead ends: 520
[2024-11-08 19:21:47,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306
[2024-11-08 19:21:47,101 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 176 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:47,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 271 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states.
[2024-11-08 19:21:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 353.
[2024-11-08 19:21:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3522727272727273) internal successors, (476), 352 states have internal predecessors, (476), 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 19:21:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 476 transitions.
[2024-11-08 19:21:47,124 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 476 transitions. Word has length 74
[2024-11-08 19:21:47,124 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:47,125 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 476 transitions.
[2024-11-08 19:21:47,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 19:21:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 476 transitions.
[2024-11-08 19:21:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2024-11-08 19:21:47,129 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:47,129 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:21:47,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-11-08 19:21:47,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:47,331 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:47,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash 367015150, now seen corresponding path program 2 times
[2024-11-08 19:21:47,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:47,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272443146]
[2024-11-08 19:21:47,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 19:21:47,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:47,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:47,336 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:47,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-08 19:21:47,428 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 19:21:47,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:21:47,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:47,432 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 70 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 19:21:47,647 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:21:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 19:21:47,747 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:47,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272443146]
[2024-11-08 19:21:47,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272443146] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:21:47,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:21:47,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9
[2024-11-08 19:21:47,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54126172]
[2024-11-08 19:21:47,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:21:47,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 19:21:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:47,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 19:21:47,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2024-11-08 19:21:47,750 INFO L87 Difference]: Start difference. First operand 353 states and 476 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 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 19:21:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:21:48,157 INFO L93 Difference]: Finished difference Result 781 states and 1026 transitions.
[2024-11-08 19:21:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-08 19:21:48,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 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 74
[2024-11-08 19:21:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:21:48,160 INFO L225 Difference]: With dead ends: 781
[2024-11-08 19:21:48,160 INFO L226 Difference]: Without dead ends: 445
[2024-11-08 19:21:48,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272
[2024-11-08 19:21:48,161 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 181 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:21:48,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 248 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:21:48,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states.
[2024-11-08 19:21:48,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 295.
[2024-11-08 19:21:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.3197278911564625) internal successors, (388), 294 states have internal predecessors, (388), 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 19:21:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 388 transitions.
[2024-11-08 19:21:48,183 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 388 transitions. Word has length 74
[2024-11-08 19:21:48,183 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:21:48,183 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 388 transitions.
[2024-11-08 19:21:48,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 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 19:21:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 388 transitions.
[2024-11-08 19:21:48,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2024-11-08 19:21:48,185 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:21:48,185 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:21:48,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-11-08 19:21:48,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:48,386 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:21:48,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:21:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash 429054764, now seen corresponding path program 3 times
[2024-11-08 19:21:48,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:21:48,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541345519]
[2024-11-08 19:21:48,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 19:21:48,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:21:48,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:21:48,390 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:21:48,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-08 19:21:48,478 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2024-11-08 19:21:48,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:21:48,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 42 conjuncts are in the unsatisfiable core
[2024-11-08 19:21:48,484 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:21:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:52,876 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:21:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:21:56,160 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:21:56,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541345519]
[2024-11-08 19:21:56,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541345519] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:21:56,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:21:56,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 45
[2024-11-08 19:21:56,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635142725]
[2024-11-08 19:21:56,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:21:56,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2024-11-08 19:21:56,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:21:56,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2024-11-08 19:21:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1831, Unknown=0, NotChecked=0, Total=1980
[2024-11-08 19:21:56,164 INFO L87 Difference]: Start difference. First operand 295 states and 388 transitions. Second operand has 45 states, 45 states have (on average 3.2444444444444445) internal successors, (146), 45 states have internal predecessors, (146), 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 19:22:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:22:15,800 INFO L93 Difference]: Finished difference Result 1410 states and 1786 transitions.
[2024-11-08 19:22:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2024-11-08 19:22:15,801 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.2444444444444445) internal successors, (146), 45 states have internal predecessors, (146), 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 74
[2024-11-08 19:22:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:22:15,806 INFO L225 Difference]: With dead ends: 1410
[2024-11-08 19:22:15,806 INFO L226 Difference]: Without dead ends: 1295
[2024-11-08 19:22:15,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3234 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=2508, Invalid=13242, Unknown=0, NotChecked=0, Total=15750
[2024-11-08 19:22:15,812 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 1931 mSDsluCounter, 6190 mSDsCounter, 0 mSdLazyCounter, 4890 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 6478 SdHoareTripleChecker+Invalid, 4983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2024-11-08 19:22:15,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 6478 Invalid, 4983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 4890 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2024-11-08 19:22:15,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states.
[2024-11-08 19:22:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 512.
[2024-11-08 19:22:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.2915851272015655) internal successors, (660), 511 states have internal predecessors, (660), 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 19:22:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 660 transitions.
[2024-11-08 19:22:15,877 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 660 transitions. Word has length 74
[2024-11-08 19:22:15,877 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:22:15,877 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 660 transitions.
[2024-11-08 19:22:15,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.2444444444444445) internal successors, (146), 45 states have internal predecessors, (146), 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 19:22:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 660 transitions.
[2024-11-08 19:22:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2024-11-08 19:22:15,880 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:22:15,880 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:22:15,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-11-08 19:22:16,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:22:16,084 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:22:16,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:22:16,085 INFO L85 PathProgramCache]: Analyzing trace with hash 807808467, now seen corresponding path program 1 times
[2024-11-08 19:22:16,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:22:16,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909431496]
[2024-11-08 19:22:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:22:16,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:22:16,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:22:16,088 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:22:16,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-08 19:22:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:22:16,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 19:22:16,189 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:22:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2024-11-08 19:22:16,288 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:22:16,289 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:22:16,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909431496]
[2024-11-08 19:22:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909431496] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:22:16,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:22:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:22:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081207276]
[2024-11-08 19:22:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:22:16,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:22:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:22:16,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:22:16,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:22:16,291 INFO L87 Difference]: Start difference. First operand 512 states and 660 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 19:22:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:22:16,431 INFO L93 Difference]: Finished difference Result 874 states and 1153 transitions.
[2024-11-08 19:22:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 19:22:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 76
[2024-11-08 19:22:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:22:16,434 INFO L225 Difference]: With dead ends: 874
[2024-11-08 19:22:16,434 INFO L226 Difference]: Without dead ends: 692
[2024-11-08 19:22:16,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:22:16,435 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:22:16,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:22:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states.
[2024-11-08 19:22:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692.
[2024-11-08 19:22:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.3096960926193921) internal successors, (905), 691 states have internal predecessors, (905), 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 19:22:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 905 transitions.
[2024-11-08 19:22:16,503 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 905 transitions. Word has length 76
[2024-11-08 19:22:16,503 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:22:16,504 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 905 transitions.
[2024-11-08 19:22:16,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 19:22:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 905 transitions.
[2024-11-08 19:22:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-08 19:22:16,505 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:22:16,506 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:22:16,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-11-08 19:22:16,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:22:16,706 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:22:16,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:22:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1044232996, now seen corresponding path program 1 times
[2024-11-08 19:22:16,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:22:16,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102193365]
[2024-11-08 19:22:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:22:16,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:22:16,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:22:16,709 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:22:16,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-11-08 19:22:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:22:16,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 19:22:16,781 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:22:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-08 19:22:16,990 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:22:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-08 19:22:17,353 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:22:17,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102193365]
[2024-11-08 19:22:17,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102193365] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:22:17,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:22:17,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14
[2024-11-08 19:22:17,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418015987]
[2024-11-08 19:22:17,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:22:17,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 19:22:17,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:22:17,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 19:22:17,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182
[2024-11-08 19:22:17,356 INFO L87 Difference]: Start difference. First operand 692 states and 905 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 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 19:22:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:22:18,516 INFO L93 Difference]: Finished difference Result 1672 states and 2185 transitions.
[2024-11-08 19:22:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2024-11-08 19:22:18,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 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 77
[2024-11-08 19:22:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:22:18,519 INFO L225 Difference]: With dead ends: 1672
[2024-11-08 19:22:18,519 INFO L226 Difference]: Without dead ends: 976
[2024-11-08 19:22:18,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=754, Unknown=0, NotChecked=0, Total=1056
[2024-11-08 19:22:18,521 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 541 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-08 19:22:18,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 134 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-08 19:22:18,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states.
[2024-11-08 19:22:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 891.
[2024-11-08 19:22:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 1.2988764044943821) internal successors, (1156), 890 states have internal predecessors, (1156), 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 19:22:18,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1156 transitions.
[2024-11-08 19:22:18,609 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1156 transitions. Word has length 77
[2024-11-08 19:22:18,609 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:22:18,610 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1156 transitions.
[2024-11-08 19:22:18,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 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 19:22:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1156 transitions.
[2024-11-08 19:22:18,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2024-11-08 19:22:18,612 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:22:18,612 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:22:18,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2024-11-08 19:22:18,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:22:18,813 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:22:18,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:22:18,815 INFO L85 PathProgramCache]: Analyzing trace with hash 377430876, now seen corresponding path program 1 times
[2024-11-08 19:22:18,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:22:18,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696444858]
[2024-11-08 19:22:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:22:18,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:22:18,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:22:18,819 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:22:18,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-11-08 19:22:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:22:18,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 44 conjuncts are in the unsatisfiable core
[2024-11-08 19:22:18,917 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:22:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:22:23,264 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:22:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:22:27,286 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:22:27,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696444858]
[2024-11-08 19:22:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696444858] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:22:27,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:22:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47
[2024-11-08 19:22:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717568371]
[2024-11-08 19:22:27,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:22:27,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2024-11-08 19:22:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:22:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2024-11-08 19:22:27,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162
[2024-11-08 19:22:27,289 INFO L87 Difference]: Start difference. First operand 891 states and 1156 transitions. Second operand has 47 states, 47 states have (on average 3.276595744680851) internal successors, (154), 47 states have internal predecessors, (154), 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 19:23:39,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:23:39,623 INFO L93 Difference]: Finished difference Result 4015 states and 4995 transitions.
[2024-11-08 19:23:39,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states.
[2024-11-08 19:23:39,623 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.276595744680851) internal successors, (154), 47 states have internal predecessors, (154), 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 78
[2024-11-08 19:23:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:23:39,632 INFO L225 Difference]: With dead ends: 4015
[2024-11-08 19:23:39,632 INFO L226 Difference]: Without dead ends: 3718
[2024-11-08 19:23:39,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23299 ImplicationChecksByTransitivity, 62.2s TimeCoverageRelationStatistics Valid=8688, Invalid=62334, Unknown=0, NotChecked=0, Total=71022
[2024-11-08 19:23:39,651 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 2440 mSDsluCounter, 13863 mSDsCounter, 0 mSdLazyCounter, 10401 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 14497 SdHoareTripleChecker+Invalid, 10759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 10401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time
[2024-11-08 19:23:39,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2440 Valid, 14497 Invalid, 10759 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [358 Valid, 10401 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time]
[2024-11-08 19:23:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states.
[2024-11-08 19:23:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 2230.
[2024-11-08 19:23:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 2229 states have (on average 1.2826379542395694) internal successors, (2859), 2229 states have internal predecessors, (2859), 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 19:23:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 2859 transitions.
[2024-11-08 19:23:39,933 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 2859 transitions. Word has length 78
[2024-11-08 19:23:39,933 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:23:39,934 INFO L471 AbstractCegarLoop]: Abstraction has 2230 states and 2859 transitions.
[2024-11-08 19:23:39,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.276595744680851) internal successors, (154), 47 states have internal predecessors, (154), 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 19:23:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 2859 transitions.
[2024-11-08 19:23:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2024-11-08 19:23:39,937 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:23:39,937 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:23:39,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2024-11-08 19:23:40,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:23:40,137 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:23:40,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:23:40,138 INFO L85 PathProgramCache]: Analyzing trace with hash -560647336, now seen corresponding path program 1 times
[2024-11-08 19:23:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:23:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409074184]
[2024-11-08 19:23:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:23:40,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:23:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:23:40,140 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:23:40,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2024-11-08 19:23:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:23:40,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 42 conjuncts are in the unsatisfiable core
[2024-11-08 19:23:40,218 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:23:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:23:44,322 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:23:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:23:47,825 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:23:47,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409074184]
[2024-11-08 19:23:47,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409074184] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:23:47,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:23:47,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47
[2024-11-08 19:23:47,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627215964]
[2024-11-08 19:23:47,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:23:47,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2024-11-08 19:23:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:23:47,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2024-11-08 19:23:47,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2015, Unknown=0, NotChecked=0, Total=2162
[2024-11-08 19:23:47,827 INFO L87 Difference]: Start difference. First operand 2230 states and 2859 transitions. Second operand has 47 states, 47 states have (on average 3.276595744680851) internal successors, (154), 47 states have internal predecessors, (154), 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 19:24:20,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:24:20,201 INFO L93 Difference]: Finished difference Result 5609 states and 7029 transitions.
[2024-11-08 19:24:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states.
[2024-11-08 19:24:20,202 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.276595744680851) internal successors, (154), 47 states have internal predecessors, (154), 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 78
[2024-11-08 19:24:20,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:24:20,212 INFO L225 Difference]: With dead ends: 5609
[2024-11-08 19:24:20,212 INFO L226 Difference]: Without dead ends: 3988
[2024-11-08 19:24:20,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4884 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=2666, Invalid=17640, Unknown=0, NotChecked=0, Total=20306
[2024-11-08 19:24:20,217 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 1524 mSDsluCounter, 8698 mSDsCounter, 0 mSdLazyCounter, 6400 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 9079 SdHoareTripleChecker+Invalid, 6505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 6400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time
[2024-11-08 19:24:20,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 9079 Invalid, 6505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 6400 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time]
[2024-11-08 19:24:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states.
[2024-11-08 19:24:20,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 2430.
[2024-11-08 19:24:20,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2429 states have (on average 1.2791272128447921) internal successors, (3107), 2429 states have internal predecessors, (3107), 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 19:24:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 3107 transitions.
[2024-11-08 19:24:20,540 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 3107 transitions. Word has length 78
[2024-11-08 19:24:20,540 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:24:20,541 INFO L471 AbstractCegarLoop]: Abstraction has 2430 states and 3107 transitions.
[2024-11-08 19:24:20,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.276595744680851) internal successors, (154), 47 states have internal predecessors, (154), 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 19:24:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 3107 transitions.
[2024-11-08 19:24:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2024-11-08 19:24:20,544 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:24:20,544 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:24:20,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2024-11-08 19:24:20,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:24:20,745 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:24:20,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:24:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1002262490, now seen corresponding path program 1 times
[2024-11-08 19:24:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:24:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912109173]
[2024-11-08 19:24:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:24:20,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:24:20,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:24:20,747 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:24:20,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2024-11-08 19:24:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:24:20,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 45 conjuncts are in the unsatisfiable core
[2024-11-08 19:24:20,836 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:24:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:24:25,778 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:24:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:24:30,421 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:24:30,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912109173]
[2024-11-08 19:24:30,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912109173] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:24:30,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:24:30,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50
[2024-11-08 19:24:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663576368]
[2024-11-08 19:24:30,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:24:30,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2024-11-08 19:24:30,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:24:30,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2024-11-08 19:24:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2287, Unknown=0, NotChecked=0, Total=2450
[2024-11-08 19:24:30,425 INFO L87 Difference]: Start difference. First operand 2430 states and 3107 transitions. Second operand has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 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 19:25:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:25:21,910 INFO L93 Difference]: Finished difference Result 3870 states and 4902 transitions.
[2024-11-08 19:25:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states.
[2024-11-08 19:25:21,912 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 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 81
[2024-11-08 19:25:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:25:21,918 INFO L225 Difference]: With dead ends: 3870
[2024-11-08 19:25:21,918 INFO L226 Difference]: Without dead ends: 3677
[2024-11-08 19:25:21,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9929 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=4146, Invalid=32144, Unknown=0, NotChecked=0, Total=36290
[2024-11-08 19:25:21,921 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 1386 mSDsluCounter, 8728 mSDsCounter, 0 mSdLazyCounter, 6867 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 9023 SdHoareTripleChecker+Invalid, 6984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 6867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:25:21,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 9023 Invalid, 6984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 6867 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time]
[2024-11-08 19:25:21,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states.
[2024-11-08 19:25:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 2960.
[2024-11-08 19:25:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2959 states have (on average 1.280162216965191) internal successors, (3788), 2959 states have internal predecessors, (3788), 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 19:25:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 3788 transitions.
[2024-11-08 19:25:22,260 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 3788 transitions. Word has length 81
[2024-11-08 19:25:22,261 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:25:22,261 INFO L471 AbstractCegarLoop]: Abstraction has 2960 states and 3788 transitions.
[2024-11-08 19:25:22,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 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 19:25:22,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 3788 transitions.
[2024-11-08 19:25:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2024-11-08 19:25:22,266 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:25:22,266 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:25:22,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2024-11-08 19:25:22,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:25:22,467 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:25:22,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:25:22,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1047125352, now seen corresponding path program 2 times
[2024-11-08 19:25:22,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:25:22,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126956393]
[2024-11-08 19:25:22,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 19:25:22,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:25:22,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:25:22,469 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:25:22,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2024-11-08 19:25:22,551 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 19:25:22,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:25:22,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 44 conjuncts are in the unsatisfiable core
[2024-11-08 19:25:22,557 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:25:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:25:27,214 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:25:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:25:31,823 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:25:31,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126956393]
[2024-11-08 19:25:31,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126956393] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:25:31,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:25:31,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48
[2024-11-08 19:25:31,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471869358]
[2024-11-08 19:25:31,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:25:31,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2024-11-08 19:25:31,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:25:31,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2024-11-08 19:25:31,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2103, Unknown=0, NotChecked=0, Total=2256
[2024-11-08 19:25:31,825 INFO L87 Difference]: Start difference. First operand 2960 states and 3788 transitions. Second operand has 48 states, 48 states have (on average 3.3333333333333335) internal successors, (160), 48 states have internal predecessors, (160), 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 19:27:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:27:13,830 INFO L93 Difference]: Finished difference Result 10666 states and 13377 transitions.
[2024-11-08 19:27:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states.
[2024-11-08 19:27:13,831 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.3333333333333335) internal successors, (160), 48 states have internal predecessors, (160), 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 81
[2024-11-08 19:27:13,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:27:13,856 INFO L225 Difference]: With dead ends: 10666
[2024-11-08 19:27:13,856 INFO L226 Difference]: Without dead ends: 8476
[2024-11-08 19:27:13,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28319 ImplicationChecksByTransitivity, 89.0s TimeCoverageRelationStatistics Valid=8797, Invalid=72713, Unknown=0, NotChecked=0, Total=81510
[2024-11-08 19:27:13,891 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 2311 mSDsluCounter, 12290 mSDsCounter, 0 mSdLazyCounter, 9419 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 12837 SdHoareTripleChecker+Invalid, 9850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 9419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:27:13,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 12837 Invalid, 9850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [431 Valid, 9419 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time]
[2024-11-08 19:27:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states.
[2024-11-08 19:27:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 4982.
[2024-11-08 19:27:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4982 states, 4981 states have (on average 1.2927123067657098) internal successors, (6439), 4981 states have internal predecessors, (6439), 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 19:27:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4982 states to 4982 states and 6439 transitions.
[2024-11-08 19:27:14,614 INFO L78 Accepts]: Start accepts. Automaton has 4982 states and 6439 transitions. Word has length 81
[2024-11-08 19:27:14,614 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:27:14,614 INFO L471 AbstractCegarLoop]: Abstraction has 4982 states and 6439 transitions.
[2024-11-08 19:27:14,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.3333333333333335) internal successors, (160), 48 states have internal predecessors, (160), 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 19:27:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states and 6439 transitions.
[2024-11-08 19:27:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2024-11-08 19:27:14,619 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:27:14,619 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:27:14,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2024-11-08 19:27:14,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:27:14,820 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:27:14,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:27:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1743574358, now seen corresponding path program 3 times
[2024-11-08 19:27:14,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:27:14,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107436035]
[2024-11-08 19:27:14,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 19:27:14,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:27:14,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:27:14,822 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:27:14,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2024-11-08 19:27:14,890 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-11-08 19:27:14,890 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:27:14,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 19:27:14,893 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:27:15,190 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 67 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 19:27:15,191 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:27:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 50 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 19:27:15,538 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:27:15,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107436035]
[2024-11-08 19:27:15,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107436035] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:27:15,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:27:15,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2024-11-08 19:27:15,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912450863]
[2024-11-08 19:27:15,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:27:15,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 19:27:15,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:27:15,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 19:27:15,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2024-11-08 19:27:15,541 INFO L87 Difference]: Start difference. First operand 4982 states and 6439 transitions. Second operand has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 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 19:27:16,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:27:16,541 INFO L93 Difference]: Finished difference Result 7267 states and 9365 transitions.
[2024-11-08 19:27:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 19:27:16,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 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 81
[2024-11-08 19:27:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:27:16,561 INFO L225 Difference]: With dead ends: 7267
[2024-11-08 19:27:16,562 INFO L226 Difference]: Without dead ends: 5286
[2024-11-08 19:27:16,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2024-11-08 19:27:16,566 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 126 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-08 19:27:16,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 689 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-08 19:27:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states.
[2024-11-08 19:27:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4982.
[2024-11-08 19:27:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4982 states, 4981 states have (on average 1.290704677775547) internal successors, (6429), 4981 states have internal predecessors, (6429), 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 19:27:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4982 states to 4982 states and 6429 transitions.
[2024-11-08 19:27:17,151 INFO L78 Accepts]: Start accepts. Automaton has 4982 states and 6429 transitions. Word has length 81
[2024-11-08 19:27:17,152 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:27:17,152 INFO L471 AbstractCegarLoop]: Abstraction has 4982 states and 6429 transitions.
[2024-11-08 19:27:17,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 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 19:27:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states and 6429 transitions.
[2024-11-08 19:27:17,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2024-11-08 19:27:17,156 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:27:17,157 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:27:17,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2024-11-08 19:27:17,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:27:17,357 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:27:17,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:27:17,358 INFO L85 PathProgramCache]: Analyzing trace with hash -305813484, now seen corresponding path program 1 times
[2024-11-08 19:27:17,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:27:17,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756886086]
[2024-11-08 19:27:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:27:17,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:27:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:27:17,359 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:27:17,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2024-11-08 19:27:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:27:17,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjuncts are in the unsatisfiable core
[2024-11-08 19:27:17,437 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:27:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:27:23,112 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:27:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:27:27,669 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:27:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756886086]
[2024-11-08 19:27:27,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756886086] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:27:27,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:27:27,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50
[2024-11-08 19:27:27,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21299064]
[2024-11-08 19:27:27,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:27:27,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2024-11-08 19:27:27,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:27:27,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2024-11-08 19:27:27,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2285, Unknown=0, NotChecked=0, Total=2450
[2024-11-08 19:27:27,672 INFO L87 Difference]: Start difference. First operand 4982 states and 6429 transitions. Second operand has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 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 19:28:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:28:49,016 INFO L93 Difference]: Finished difference Result 9720 states and 12378 transitions.
[2024-11-08 19:28:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states.
[2024-11-08 19:28:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 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 81
[2024-11-08 19:28:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:28:49,034 INFO L225 Difference]: With dead ends: 9720
[2024-11-08 19:28:49,034 INFO L226 Difference]: Without dead ends: 7728
[2024-11-08 19:28:49,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13328 ImplicationChecksByTransitivity, 71.9s TimeCoverageRelationStatistics Valid=4593, Invalid=39297, Unknown=0, NotChecked=0, Total=43890
[2024-11-08 19:28:49,040 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 1445 mSDsluCounter, 8925 mSDsCounter, 0 mSdLazyCounter, 6687 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 9295 SdHoareTripleChecker+Invalid, 6831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 6687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:28:49,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 9295 Invalid, 6831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [144 Valid, 6687 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time]
[2024-11-08 19:28:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7728 states.
[2024-11-08 19:28:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7728 to 5556.
[2024-11-08 19:28:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 5555 states have (on average 1.288208820882088) internal successors, (7156), 5555 states have internal predecessors, (7156), 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 19:28:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 7156 transitions.
[2024-11-08 19:28:49,750 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 7156 transitions. Word has length 81
[2024-11-08 19:28:49,751 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:28:49,751 INFO L471 AbstractCegarLoop]: Abstraction has 5556 states and 7156 transitions.
[2024-11-08 19:28:49,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 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 19:28:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 7156 transitions.
[2024-11-08 19:28:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2024-11-08 19:28:49,756 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:28:49,787 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 19:28:49,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2024-11-08 19:28:49,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:28:49,988 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:28:49,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:28:49,988 INFO L85 PathProgramCache]: Analyzing trace with hash -258163888, now seen corresponding path program 1 times
[2024-11-08 19:28:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:28:49,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902766636]
[2024-11-08 19:28:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:28:49,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:28:49,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:28:49,992 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:28:49,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2024-11-08 19:28:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:28:50,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 19:28:50,074 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:28:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2024-11-08 19:28:50,185 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:28:50,185 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:28:50,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902766636]
[2024-11-08 19:28:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902766636] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:28:50,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:28:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:28:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686231679]
[2024-11-08 19:28:50,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:28:50,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:28:50,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:28:50,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:28:50,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:28:50,187 INFO L87 Difference]: Start difference. First operand 5556 states and 7156 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 19:28:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:28:50,838 INFO L93 Difference]: Finished difference Result 6255 states and 7964 transitions.
[2024-11-08 19:28:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 19:28:50,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 82
[2024-11-08 19:28:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:28:50,845 INFO L225 Difference]: With dead ends: 6255
[2024-11-08 19:28:50,845 INFO L226 Difference]: Without dead ends: 2994
[2024-11-08 19:28:50,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:28:50,849 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 80 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 19:28:50,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 343 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 19:28:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states.
[2024-11-08 19:28:51,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2994.
[2024-11-08 19:28:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2993 states have (on average 1.2826595389241564) internal successors, (3839), 2993 states have internal predecessors, (3839), 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 19:28:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 3839 transitions.
[2024-11-08 19:28:51,207 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 3839 transitions. Word has length 82
[2024-11-08 19:28:51,207 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:28:51,207 INFO L471 AbstractCegarLoop]: Abstraction has 2994 states and 3839 transitions.
[2024-11-08 19:28:51,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 19:28:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 3839 transitions.
[2024-11-08 19:28:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2024-11-08 19:28:51,209 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:28:51,210 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:28:51,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2024-11-08 19:28:51,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:28:51,410 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:28:51,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:28:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2054177479, now seen corresponding path program 1 times
[2024-11-08 19:28:51,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:28:51,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121853953]
[2024-11-08 19:28:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:28:51,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:28:51,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:28:51,412 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:28:51,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2024-11-08 19:28:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:28:51,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 46 conjuncts are in the unsatisfiable core
[2024-11-08 19:28:51,516 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:28:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:28:56,744 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:29:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:29:02,615 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:29:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121853953]
[2024-11-08 19:29:02,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121853953] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:29:02,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:29:02,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50
[2024-11-08 19:29:02,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758505799]
[2024-11-08 19:29:02,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:29:02,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2024-11-08 19:29:02,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:29:02,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2024-11-08 19:29:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2280, Unknown=0, NotChecked=0, Total=2450
[2024-11-08 19:29:02,617 INFO L87 Difference]: Start difference. First operand 2994 states and 3839 transitions. Second operand has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 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 19:31:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:31:53,445 INFO L93 Difference]: Finished difference Result 6797 states and 8493 transitions.
[2024-11-08 19:31:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states.
[2024-11-08 19:31:53,446 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 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 84
[2024-11-08 19:31:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:31:53,456 INFO L225 Difference]: With dead ends: 6797
[2024-11-08 19:31:53,456 INFO L226 Difference]: Without dead ends: 6596
[2024-11-08 19:31:53,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40765 ImplicationChecksByTransitivity, 156.3s TimeCoverageRelationStatistics Valid=11422, Invalid=99134, Unknown=0, NotChecked=0, Total=110556
[2024-11-08 19:31:53,465 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 3329 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 9944 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 12780 SdHoareTripleChecker+Invalid, 10689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 9944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time
[2024-11-08 19:31:53,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3329 Valid, 12780 Invalid, 10689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [745 Valid, 9944 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time]
[2024-11-08 19:31:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6596 states.
[2024-11-08 19:31:54,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6596 to 4077.
[2024-11-08 19:31:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4077 states, 4076 states have (on average 1.286800785083415) internal successors, (5245), 4076 states have internal predecessors, (5245), 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 19:31:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4077 states to 4077 states and 5245 transitions.
[2024-11-08 19:31:54,040 INFO L78 Accepts]: Start accepts. Automaton has 4077 states and 5245 transitions. Word has length 84
[2024-11-08 19:31:54,040 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:31:54,040 INFO L471 AbstractCegarLoop]: Abstraction has 4077 states and 5245 transitions.
[2024-11-08 19:31:54,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 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 19:31:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4077 states and 5245 transitions.
[2024-11-08 19:31:54,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2024-11-08 19:31:54,044 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 19:31:54,044 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-08 19:31:54,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2024-11-08 19:31:54,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:31:54,248 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:31:54,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:31:54,248 INFO L85 PathProgramCache]: Analyzing trace with hash -92383179, now seen corresponding path program 2 times
[2024-11-08 19:31:54,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 19:31:54,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360123625]
[2024-11-08 19:31:54,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 19:31:54,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:31:54,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:31:54,250 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:31:54,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9226e856-aca2-48c2-8b22-2eb6a4b2656a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2024-11-08 19:31:54,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 19:31:54,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 19:31:54,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 44 conjuncts are in the unsatisfiable core
[2024-11-08 19:31:54,336 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:31:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:31:59,158 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:32:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:32:04,831 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 19:32:04,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360123625]
[2024-11-08 19:32:04,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360123625] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:32:04,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 19:32:04,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50
[2024-11-08 19:32:04,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818257854]
[2024-11-08 19:32:04,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:32:04,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2024-11-08 19:32:04,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 19:32:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2024-11-08 19:32:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2290, Unknown=0, NotChecked=0, Total=2450
[2024-11-08 19:32:04,833 INFO L87 Difference]: Start difference. First operand 4077 states and 5245 transitions. Second operand has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 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)