./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/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_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/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_fb2d77e8-18e4-4831-8682-1cb66da68210/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 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 18:13:02,356 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 18:13:02,442 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 18:13:02,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 18:13:02,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 18:13:02,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 18:13:02,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 18:13:02,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 18:13:02,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 18:13:02,500 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 18:13:02,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 18:13:02,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 18:13:02,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 18:13:02,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 18:13:02,506 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 18:13:02,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 18:13:02,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 18:13:02,508 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 18:13:02,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 18:13:02,509 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 18:13:02,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 18:13:02,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 18:13:02,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 18:13:02,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 18:13:02,515 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 18:13:02,515 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 18:13:02,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 18:13:02,516 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 18:13:02,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 18:13:02,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 18:13:02,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 18:13:02,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 18:13:02,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 18:13:02,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 18:13:02,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 18:13:02,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 18:13:02,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 18:13:02,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 18:13:02,522 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 18:13:02,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 18:13:02,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 18:13:02,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 18:13:02,525 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_fb2d77e8-18e4-4831-8682-1cb66da68210/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc
[2024-11-08 18:13:02,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 18:13:03,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 18:13:03,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 18:13:03,068 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 18:13:03,068 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 18:13:03,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/loop-invgen/nested6.i
Unable to find full path for "g++"
[2024-11-08 18:13:05,596 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 18:13:05,884 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 18:13:05,884 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/sv-benchmarks/c/loop-invgen/nested6.i
[2024-11-08 18:13:05,894 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/data/ce994cab0/65953a34ab3b46d6817a94b0e93dd97b/FLAGc3bbbfb3c
[2024-11-08 18:13:05,913 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/data/ce994cab0/65953a34ab3b46d6817a94b0e93dd97b
[2024-11-08 18:13:05,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 18:13:05,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 18:13:05,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 18:13:05,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 18:13:05,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 18:13:05,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:13:05" (1/1) ...
[2024-11-08 18:13:05,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@826fc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:05, skipping insertion in model container
[2024-11-08 18:13:05,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:13:05" (1/1) ...
[2024-11-08 18:13:05,971 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 18:13:06,231 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_fb2d77e8-18e4-4831-8682-1cb66da68210/sv-benchmarks/c/loop-invgen/nested6.i[893,906]
[2024-11-08 18:13:06,253 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 18:13:06,264 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 18:13:06,283 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_fb2d77e8-18e4-4831-8682-1cb66da68210/sv-benchmarks/c/loop-invgen/nested6.i[893,906]
[2024-11-08 18:13:06,290 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 18:13:06,311 INFO L204 MainTranslator]: Completed translation
[2024-11-08 18:13:06,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06 WrapperNode
[2024-11-08 18:13:06,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 18:13:06,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 18:13:06,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 18:13:06,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 18:13:06,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,352 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57
[2024-11-08 18:13:06,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 18:13:06,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 18:13:06,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 18:13:06,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 18:13:06,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,371 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,387 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 18:13:06,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,396 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 18:13:06,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 18:13:06,405 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 18:13:06,405 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 18:13:06,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (1/1) ...
[2024-11-08 18:13:06,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 18:13:06,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:13:06,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 18:13:06,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 18:13:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 18:13:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 18:13:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 18:13:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 18:13:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-08 18:13:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-08 18:13:06,623 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 18:13:06,629 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 18:13:06,879 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live.
[2024-11-08 18:13:06,879 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 18:13:06,910 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 18:13:06,911 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 18:13:06,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:13:06 BoogieIcfgContainer
[2024-11-08 18:13:06,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 18:13:06,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 18:13:06,914 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 18:13:06,919 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 18:13:06,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:13:05" (1/3) ...
[2024-11-08 18:13:06,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134e881c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:13:06, skipping insertion in model container
[2024-11-08 18:13:06,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:13:06" (2/3) ...
[2024-11-08 18:13:06,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134e881c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:13:06, skipping insertion in model container
[2024-11-08 18:13:06,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:13:06" (3/3) ...
[2024-11-08 18:13:06,923 INFO L112 eAbstractionObserver]: Analyzing ICFG nested6.i
[2024-11-08 18:13:06,948 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 18:13:06,948 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 18:13:07,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 18:13:07,041 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;@64aa4526, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 18:13:07,041 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 18:13:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 18:13:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-08 18:13:07,053 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:13:07,053 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:07,054 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:13:07,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash 697459350, now seen corresponding path program 1 times
[2024-11-08 18:13:07,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:07,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25688015]
[2024-11-08 18:13:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:07,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:07,460 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 18:13:07,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:07,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25688015]
[2024-11-08 18:13:07,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25688015] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:13:07,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:13:07,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 18:13:07,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150294010]
[2024-11-08 18:13:07,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:13:07,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 18:13:07,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:13:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 18:13:07,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 18:13:07,501 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:13:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:13:07,623 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions.
[2024-11-08 18:13:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 18:13:07,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-11-08 18:13:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:13:07,634 INFO L225 Difference]: With dead ends: 55
[2024-11-08 18:13:07,635 INFO L226 Difference]: Without dead ends: 28
[2024-11-08 18:13:07,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 18:13:07,647 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 18:13:07,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 18:13:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2024-11-08 18:13:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2024-11-08 18:13:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 18:13:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions.
[2024-11-08 18:13:07,690 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14
[2024-11-08 18:13:07,691 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:13:07,691 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions.
[2024-11-08 18:13:07,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:13:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions.
[2024-11-08 18:13:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-11-08 18:13:07,692 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:13:07,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:07,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 18:13:07,693 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:13:07,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2028547053, now seen corresponding path program 1 times
[2024-11-08 18:13:07,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:07,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667218329]
[2024-11-08 18:13:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:07,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:07,923 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 18:13:07,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667218329]
[2024-11-08 18:13:07,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667218329] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:13:07,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:13:07,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 18:13:07,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782803825]
[2024-11-08 18:13:07,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:13:07,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 18:13:07,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:13:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 18:13:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 18:13:07,929 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:13:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:13:08,142 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions.
[2024-11-08 18:13:08,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 18:13:08,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2024-11-08 18:13:08,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:13:08,145 INFO L225 Difference]: With dead ends: 41
[2024-11-08 18:13:08,147 INFO L226 Difference]: Without dead ends: 39
[2024-11-08 18:13:08,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-11-08 18:13:08,149 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 18:13:08,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 93 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 18:13:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2024-11-08 18:13:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32.
[2024-11-08 18:13:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 18:13:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions.
[2024-11-08 18:13:08,169 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 16
[2024-11-08 18:13:08,169 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:13:08,170 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions.
[2024-11-08 18:13:08,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:13:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions.
[2024-11-08 18:13:08,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-11-08 18:13:08,171 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:13:08,171 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:08,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-08 18:13:08,172 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:13:08,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1379199246, now seen corresponding path program 1 times
[2024-11-08 18:13:08,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:08,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176201167]
[2024-11-08 18:13:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:08,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:08,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2024-11-08 18:13:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:13:08,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:08,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176201167]
[2024-11-08 18:13:08,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176201167] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:13:08,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:13:08,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 18:13:08,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130753937]
[2024-11-08 18:13:08,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:13:08,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 18:13:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:13:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 18:13:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 18:13:08,401 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 18:13:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:13:08,513 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions.
[2024-11-08 18:13:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 18:13:08,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19
[2024-11-08 18:13:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:13:08,516 INFO L225 Difference]: With dead ends: 47
[2024-11-08 18:13:08,517 INFO L226 Difference]: Without dead ends: 45
[2024-11-08 18:13:08,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 18:13:08,519 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 18:13:08,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 18:13:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2024-11-08 18:13:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2024-11-08 18:13:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-08 18:13:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions.
[2024-11-08 18:13:08,533 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 19
[2024-11-08 18:13:08,533 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:13:08,533 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions.
[2024-11-08 18:13:08,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 18:13:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions.
[2024-11-08 18:13:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-11-08 18:13:08,535 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:13:08,535 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:08,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-08 18:13:08,536 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:13:08,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:08,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1187052089, now seen corresponding path program 1 times
[2024-11-08 18:13:08,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:08,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097307756]
[2024-11-08 18:13:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:08,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:08,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2024-11-08 18:13:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:13:08,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:08,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097307756]
[2024-11-08 18:13:08,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097307756] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:13:08,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293346884]
[2024-11-08 18:13:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:08,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:08,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:13:08,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:13:08,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 18:13:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:08,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 18:13:08,806 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:13:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-08 18:13:08,995 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 18:13:08,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293346884] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:13:08,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 18:13:08,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2024-11-08 18:13:08,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68650486]
[2024-11-08 18:13:08,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:13:08,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 18:13:09,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:13:09,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 18:13:09,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2024-11-08 18:13:09,003 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 18:13:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:13:09,200 INFO L93 Difference]: Finished difference Result 120 states and 162 transitions.
[2024-11-08 18:13:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 18:13:09,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24
[2024-11-08 18:13:09,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:13:09,202 INFO L225 Difference]: With dead ends: 120
[2024-11-08 18:13:09,202 INFO L226 Difference]: Without dead ends: 80
[2024-11-08 18:13:09,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182
[2024-11-08 18:13:09,204 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 18:13:09,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 68 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 18:13:09,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2024-11-08 18:13:09,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 52.
[2024-11-08 18:13:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 44 states have internal predecessors, (52), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-08 18:13:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions.
[2024-11-08 18:13:09,229 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 24
[2024-11-08 18:13:09,229 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:13:09,229 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions.
[2024-11-08 18:13:09,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 18:13:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions.
[2024-11-08 18:13:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-08 18:13:09,233 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:13:09,233 INFO L215 NwaCegarLoop]: trace histogram [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]
[2024-11-08 18:13:09,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 18:13:09,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:09,434 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:13:09,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:09,434 INFO L85 PathProgramCache]: Analyzing trace with hash 596063476, now seen corresponding path program 1 times
[2024-11-08 18:13:09,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:09,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000141595]
[2024-11-08 18:13:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:09,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:09,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2024-11-08 18:13:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:09,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2024-11-08 18:13:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 18:13:09,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000141595]
[2024-11-08 18:13:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000141595] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:13:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073576632]
[2024-11-08 18:13:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:09,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:09,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:13:09,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:13:09,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 18:13:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:09,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 18:13:09,787 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:13:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-08 18:13:09,876 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:13:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 18:13:09,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073576632] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:13:09,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:13:09,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 14
[2024-11-08 18:13:09,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312513650]
[2024-11-08 18:13:09,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:13:09,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 18:13:09,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:13:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 18:13:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2024-11-08 18:13:09,970 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5)
[2024-11-08 18:13:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:13:10,522 INFO L93 Difference]: Finished difference Result 145 states and 197 transitions.
[2024-11-08 18:13:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-11-08 18:13:10,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 32
[2024-11-08 18:13:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:13:10,525 INFO L225 Difference]: With dead ends: 145
[2024-11-08 18:13:10,526 INFO L226 Difference]: Without dead ends: 105
[2024-11-08 18:13:10,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870
[2024-11-08 18:13:10,527 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 18:13:10,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 123 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 18:13:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-11-08 18:13:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 72.
[2024-11-08 18:13:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 59 states have internal predecessors, (71), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-08 18:13:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions.
[2024-11-08 18:13:10,566 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 32
[2024-11-08 18:13:10,566 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:13:10,566 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions.
[2024-11-08 18:13:10,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5)
[2024-11-08 18:13:10,569 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions.
[2024-11-08 18:13:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 18:13:10,570 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:13:10,570 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:10,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 18:13:10,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:10,771 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:13:10,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:10,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1001265779, now seen corresponding path program 1 times
[2024-11-08 18:13:10,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:10,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916543055]
[2024-11-08 18:13:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:10,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:10,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2024-11-08 18:13:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:10,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2024-11-08 18:13:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-11-08 18:13:10,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:10,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916543055]
[2024-11-08 18:13:10,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916543055] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:13:10,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958693574]
[2024-11-08 18:13:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:10,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:10,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:13:10,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:13:10,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 18:13:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:10,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 18:13:10,965 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:13:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 18:13:11,121 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:13:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-11-08 18:13:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958693574] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:13:11,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:13:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18
[2024-11-08 18:13:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384163516]
[2024-11-08 18:13:11,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:13:11,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-08 18:13:11,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:13:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-08 18:13:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306
[2024-11-08 18:13:11,215 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5)
[2024-11-08 18:13:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:13:11,487 INFO L93 Difference]: Finished difference Result 145 states and 183 transitions.
[2024-11-08 18:13:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 18:13:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 45
[2024-11-08 18:13:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:13:11,489 INFO L225 Difference]: With dead ends: 145
[2024-11-08 18:13:11,490 INFO L226 Difference]: Without dead ends: 92
[2024-11-08 18:13:11,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506
[2024-11-08 18:13:11,491 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 43 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 18:13:11,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 177 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 18:13:11,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-11-08 18:13:11,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79.
[2024-11-08 18:13:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 65 states have internal predecessors, (78), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2024-11-08 18:13:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions.
[2024-11-08 18:13:11,520 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 45
[2024-11-08 18:13:11,521 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:13:11,521 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions.
[2024-11-08 18:13:11,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5)
[2024-11-08 18:13:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions.
[2024-11-08 18:13:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2024-11-08 18:13:11,523 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:13:11,523 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:11,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 18:13:11,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:11,728 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:13:11,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:11,729 INFO L85 PathProgramCache]: Analyzing trace with hash 525348084, now seen corresponding path program 1 times
[2024-11-08 18:13:11,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:11,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282856616]
[2024-11-08 18:13:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:11,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:11,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2024-11-08 18:13:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:11,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2024-11-08 18:13:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:11,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2024-11-08 18:13:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 18:13:11,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282856616]
[2024-11-08 18:13:11,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282856616] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:13:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688365584]
[2024-11-08 18:13:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:11,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:11,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:13:11,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:13:11,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 18:13:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:11,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 18:13:11,972 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:13:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 18:13:12,092 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:13:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 18:13:12,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688365584] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:13:12,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:13:12,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15
[2024-11-08 18:13:12,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776143049]
[2024-11-08 18:13:12,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:13:12,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-08 18:13:12,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:13:12,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-08 18:13:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210
[2024-11-08 18:13:12,187 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-08 18:13:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:13:12,373 INFO L93 Difference]: Finished difference Result 156 states and 200 transitions.
[2024-11-08 18:13:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 18:13:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 46
[2024-11-08 18:13:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:13:12,375 INFO L225 Difference]: With dead ends: 156
[2024-11-08 18:13:12,375 INFO L226 Difference]: Without dead ends: 105
[2024-11-08 18:13:12,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210
[2024-11-08 18:13:12,377 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 18:13:12,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 154 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 18:13:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-11-08 18:13:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87.
[2024-11-08 18:13:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 71 states have internal predecessors, (84), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-08 18:13:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions.
[2024-11-08 18:13:12,404 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 46
[2024-11-08 18:13:12,404 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:13:12,404 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions.
[2024-11-08 18:13:12,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-08 18:13:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions.
[2024-11-08 18:13:12,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2024-11-08 18:13:12,407 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:13:12,407 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:12,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 18:13:12,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:12,612 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:13:12,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1707833848, now seen corresponding path program 1 times
[2024-11-08 18:13:12,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:12,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595837158]
[2024-11-08 18:13:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:12,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:12,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2024-11-08 18:13:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:12,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2024-11-08 18:13:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:12,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2024-11-08 18:13:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:12,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2024-11-08 18:13:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2024-11-08 18:13:12,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:12,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595837158]
[2024-11-08 18:13:12,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595837158] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:13:12,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900364223]
[2024-11-08 18:13:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:12,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:12,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:13:12,788 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:13:12,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 18:13:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:12,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 18:13:12,861 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:13:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 47 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2024-11-08 18:13:13,014 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:13:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2024-11-08 18:13:13,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900364223] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:13:13,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:13:13,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 14
[2024-11-08 18:13:13,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371494561]
[2024-11-08 18:13:13,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:13:13,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 18:13:13,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:13:13,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 18:13:13,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182
[2024-11-08 18:13:13,192 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9)
[2024-11-08 18:13:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:13:14,043 INFO L93 Difference]: Finished difference Result 189 states and 254 transitions.
[2024-11-08 18:13:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-11-08 18:13:14,045 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 59
[2024-11-08 18:13:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:13:14,046 INFO L225 Difference]: With dead ends: 189
[2024-11-08 18:13:14,046 INFO L226 Difference]: Without dead ends: 0
[2024-11-08 18:13:14,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 112 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992
[2024-11-08 18:13:14,053 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 89 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 18:13:14,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 126 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 18:13:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-08 18:13:14,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-08 18:13:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 18:13:14,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-08 18:13:14,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59
[2024-11-08 18:13:14,058 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:13:14,058 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-08 18:13:14,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9)
[2024-11-08 18:13:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-08 18:13:14,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-08 18:13:14,065 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-08 18:13:14,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 18:13:14,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:14,274 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:14,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-08 18:13:17,820 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-08 18:13:17,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:13:17 BoogieIcfgContainer
[2024-11-08 18:13:17,854 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-08 18:13:17,855 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-08 18:13:17,856 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-08 18:13:17,856 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-08 18:13:17,857 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:13:06" (3/4) ...
[2024-11-08 18:13:17,861 INFO L142 WitnessPrinter]: Generating witness for correct program
[2024-11-08 18:13:17,867 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2024-11-08 18:13:17,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges
[2024-11-08 18:13:17,874 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-08 18:13:17,875 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-08 18:13:17,875 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-08 18:13:18,005 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/witness.graphml
[2024-11-08 18:13:18,006 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/witness.yml
[2024-11-08 18:13:18,006 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-08 18:13:18,007 INFO L158 Benchmark]: Toolchain (without parser) took 12088.77ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 120.5MB in the beginning and 50.8MB in the end (delta: 69.7MB). Peak memory consumption was 104.5MB. Max. memory is 16.1GB.
[2024-11-08 18:13:18,008 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 155.2MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 18:13:18,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.56ms. Allocated memory is still 155.2MB. Free memory was 119.9MB in the beginning and 107.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-08 18:13:18,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.40ms. Allocated memory is still 155.2MB. Free memory was 107.1MB in the beginning and 105.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 18:13:18,010 INFO L158 Benchmark]: Boogie Preprocessor took 49.77ms. Allocated memory is still 155.2MB. Free memory was 105.5MB in the beginning and 103.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 18:13:18,011 INFO L158 Benchmark]: RCFGBuilder took 507.04ms. Allocated memory is still 155.2MB. Free memory was 103.9MB in the beginning and 92.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-11-08 18:13:18,011 INFO L158 Benchmark]: TraceAbstraction took 10940.69ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 91.9MB in the beginning and 56.1MB in the end (delta: 35.8MB). Peak memory consumption was 79.6MB. Max. memory is 16.1GB.
[2024-11-08 18:13:18,012 INFO L158 Benchmark]: Witness Printer took 150.97ms. Allocated memory is still 188.7MB. Free memory was 56.1MB in the beginning and 50.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-11-08 18:13:18,014 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.39ms. Allocated memory is still 155.2MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 392.56ms. Allocated memory is still 155.2MB. Free memory was 119.9MB in the beginning and 107.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 39.40ms. Allocated memory is still 155.2MB. Free memory was 107.1MB in the beginning and 105.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 49.77ms. Allocated memory is still 155.2MB. Free memory was 105.5MB in the beginning and 103.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 507.04ms. Allocated memory is still 155.2MB. Free memory was 103.9MB in the beginning and 92.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 10940.69ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 91.9MB in the beginning and 56.1MB in the end (delta: 35.8MB). Peak memory consumption was 79.6MB. Max. memory is 16.1GB.
* Witness Printer took 150.97ms. Allocated memory is still 188.7MB. Free memory was 56.1MB in the beginning and 50.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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
- PositiveResult [Line: 19]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 374 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348 mSDsluCounter, 905 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 739 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1019 IncrementalHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 166 mSDtfsCounter, 1019 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 509 GetRequests, 380 SyntacticMatches, 11 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=7, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 99 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 461 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 626 ConstructedInterpolants, 0 QuantifiedInterpolants, 1620 SizeOfPredicates, 20 NumberOfNonLiveVariables, 473 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 461/507 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
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 36]: Loop Invariant
Derived loop invariant: ((((((long long) 2 * i) <= j) && (k <= n)) && (((long long) j + 1) <= n)) && (((long long) 2 * i) <= k))
- InvariantResult [Line: 33]: Loop Invariant
Derived loop invariant: (k == n)
- InvariantResult [Line: 34]: Loop Invariant
Derived loop invariant: ((((long long) 2 * i) <= j) && (k == n))
- ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert
Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0)
RESULT: Ultimate proved your program to be correct!
[2024-11-08 18:13:18,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2d77e8-18e4-4831-8682-1cb66da68210/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE