./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/string-2.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_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/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_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/string-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/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_2362318a-aaa8-4d27-b118-112f98e711ce/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 fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 18:54:37,984 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 18:54:38,093 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 18:54:38,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 18:54:38,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 18:54:38,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 18:54:38,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 18:54:38,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 18:54:38,159 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 18:54:38,165 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 18:54:38,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 18:54:38,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 18:54:38,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 18:54:38,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 18:54:38,168 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 18:54:38,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 18:54:38,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 18:54:38,173 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 18:54:38,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 18:54:38,174 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 18:54:38,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 18:54:38,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 18:54:38,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 18:54:38,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 18:54:38,179 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 18:54:38,179 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 18:54:38,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 18:54:38,180 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 18:54:38,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 18:54:38,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 18:54:38,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 18:54:38,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 18:54:38,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 18:54:38,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 18:54:38,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 18:54:38,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 18:54:38,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 18:54:38,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 18:54:38,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 18:54:38,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 18:54:38,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 18:54:38,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 18:54:38,188 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_2362318a-aaa8-4d27-b118-112f98e711ce/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892
[2024-11-08 18:54:38,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 18:54:38,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 18:54:38,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 18:54:38,610 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 18:54:38,611 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 18:54:38,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/loops/string-2.i
Unable to find full path for "g++"
[2024-11-08 18:54:41,272 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 18:54:41,543 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 18:54:41,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/sv-benchmarks/c/loops/string-2.i
[2024-11-08 18:54:41,554 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/data/fd7094779/de8a300e28ff4facafaddfc3657ca0e1/FLAG0107c9849
[2024-11-08 18:54:41,575 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/data/fd7094779/de8a300e28ff4facafaddfc3657ca0e1
[2024-11-08 18:54:41,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 18:54:41,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 18:54:41,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 18:54:41,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 18:54:41,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 18:54:41,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:41" (1/1) ...
[2024-11-08 18:54:41,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50aa58d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:41, skipping insertion in model container
[2024-11-08 18:54:41,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:41" (1/1) ...
[2024-11-08 18:54:41,635 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 18:54:41,952 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_2362318a-aaa8-4d27-b118-112f98e711ce/sv-benchmarks/c/loops/string-2.i[896,909]
[2024-11-08 18:54:41,994 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 18:54:42,012 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 18:54:42,033 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_2362318a-aaa8-4d27-b118-112f98e711ce/sv-benchmarks/c/loops/string-2.i[896,909]
[2024-11-08 18:54:42,057 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 18:54:42,082 INFO L204 MainTranslator]: Completed translation
[2024-11-08 18:54:42,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42 WrapperNode
[2024-11-08 18:54:42,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 18:54:42,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 18:54:42,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 18:54:42,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 18:54:42,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,144 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124
[2024-11-08 18:54:42,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 18:54:42,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 18:54:42,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 18:54:42,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 18:54:42,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,170 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,190 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1].
[2024-11-08 18:54:42,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 18:54:42,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 18:54:42,236 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 18:54:42,236 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 18:54:42,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (1/1) ...
[2024-11-08 18:54:42,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 18:54:42,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:42,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 18:54:42,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 18:54:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 18:54:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 18:54:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-08 18:54:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-08 18:54:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-08 18:54:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-08 18:54:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-08 18:54:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-08 18:54:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 18:54:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 18:54:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-08 18:54:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-08 18:54:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-08 18:54:42,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-08 18:54:42,474 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 18:54:42,476 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 18:54:42,847 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live.
[2024-11-08 18:54:42,848 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 18:54:42,877 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 18:54:42,877 INFO L316 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-08 18:54:42,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:42 BoogieIcfgContainer
[2024-11-08 18:54:42,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 18:54:42,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 18:54:42,886 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 18:54:42,891 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 18:54:42,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:54:41" (1/3) ...
[2024-11-08 18:54:42,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6544d010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:42, skipping insertion in model container
[2024-11-08 18:54:42,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:42" (2/3) ...
[2024-11-08 18:54:42,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6544d010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:42, skipping insertion in model container
[2024-11-08 18:54:42,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:42" (3/3) ...
[2024-11-08 18:54:42,897 INFO L112 eAbstractionObserver]: Analyzing ICFG string-2.i
[2024-11-08 18:54:42,934 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 18:54:42,934 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 18:54:43,038 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 18:54:43,048 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;@6dd7c55e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 18:54:43,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 18:54:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:43,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-08 18:54:43,067 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:43,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:43,069 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:43,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1265437441, now seen corresponding path program 1 times
[2024-11-08 18:54:43,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:54:43,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689196504]
[2024-11-08 18:54:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:43,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:54:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:43,493 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 18:54:43,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:54:43,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689196504]
[2024-11-08 18:54:43,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689196504] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:54:43,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:54:43,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 18:54:43,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899577733]
[2024-11-08 18:54:43,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:54:43,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 18:54:43,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:54:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 18:54:43,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 18:54:43,535 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18:54:43,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:43,647 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions.
[2024-11-08 18:54:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 18:54:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2024-11-08 18:54:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:43,667 INFO L225 Difference]: With dead ends: 62
[2024-11-08 18:54:43,667 INFO L226 Difference]: Without dead ends: 33
[2024-11-08 18:54:43,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 18:54:43,679 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:43,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 51 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 18:54:43,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2024-11-08 18:54:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32.
[2024-11-08 18:54:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 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 18:54:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions.
[2024-11-08 18:54:43,743 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 17
[2024-11-08 18:54:43,746 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:43,746 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions.
[2024-11-08 18:54:43,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18:54:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions.
[2024-11-08 18:54:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-08 18:54:43,750 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:43,750 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:43,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 18:54:43,752 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:43,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:43,754 INFO L85 PathProgramCache]: Analyzing trace with hash -885994698, now seen corresponding path program 1 times
[2024-11-08 18:54:43,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:54:43,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975110053]
[2024-11-08 18:54:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:43,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:54:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 18:54:44,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:54:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975110053]
[2024-11-08 18:54:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975110053] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:54:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78084143]
[2024-11-08 18:54:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:44,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:44,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:44,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:54:44,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 18:54:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:44,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 18:54:44,198 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:54:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 18:54:44,280 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:54:44,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 18:54:44,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78084143] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:54:44,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:54:44,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2024-11-08 18:54:44,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839112560]
[2024-11-08 18:54:44,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:54:44,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 18:54:44,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:54:44,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 18:54:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-08 18:54:44,341 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:44,592 INFO L93 Difference]: Finished difference Result 81 states and 124 transitions.
[2024-11-08 18:54:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 18:54:44,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2024-11-08 18:54:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:44,594 INFO L225 Difference]: With dead ends: 81
[2024-11-08 18:54:44,595 INFO L226 Difference]: Without dead ends: 55
[2024-11-08 18:54:44,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-08 18:54:44,597 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:44,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 65 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 18:54:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2024-11-08 18:54:44,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42.
[2024-11-08 18:54:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2024-11-08 18:54:44,610 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 23
[2024-11-08 18:54:44,620 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:44,620 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2024-11-08 18:54:44,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2024-11-08 18:54:44,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-11-08 18:54:44,622 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:44,622 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:44,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 18:54:44,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:44,831 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:44,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash 560329046, now seen corresponding path program 2 times
[2024-11-08 18:54:44,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:54:44,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738891020]
[2024-11-08 18:54:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:54:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-08 18:54:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:54:45,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738891020]
[2024-11-08 18:54:45,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738891020] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:54:45,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022761151]
[2024-11-08 18:54:45,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:54:45,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:45,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:45,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:54:45,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 18:54:45,289 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-08 18:54:45,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:54:45,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 18:54:45,295 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:54:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2024-11-08 18:54:45,492 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 18:54:45,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022761151] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:54:45,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 18:54:45,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-11-08 18:54:45,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063664624]
[2024-11-08 18:54:45,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:54:45,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 18:54:45,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:54:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 18:54:45,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110
[2024-11-08 18:54:45,499 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 18:54:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:45,577 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions.
[2024-11-08 18:54:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 18:54:45,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35
[2024-11-08 18:54:45,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:45,579 INFO L225 Difference]: With dead ends: 60
[2024-11-08 18:54:45,580 INFO L226 Difference]: Without dead ends: 44
[2024-11-08 18:54:45,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110
[2024-11-08 18:54:45,582 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:45,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 18:54:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2024-11-08 18:54:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2024-11-08 18:54:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:45,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions.
[2024-11-08 18:54:45,591 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 35
[2024-11-08 18:54:45,591 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:45,592 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions.
[2024-11-08 18:54:45,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 18:54:45,592 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions.
[2024-11-08 18:54:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-08 18:54:45,593 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:45,594 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:45,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 18:54:45,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:45,798 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:45,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:45,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1993865093, now seen corresponding path program 1 times
[2024-11-08 18:54:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:54:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928613003]
[2024-11-08 18:54:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:45,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:54:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 18:54:46,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:54:46,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928613003]
[2024-11-08 18:54:46,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928613003] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:54:46,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915415572]
[2024-11-08 18:54:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:46,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:46,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:46,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:54:46,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 18:54:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:46,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 18:54:46,174 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:54:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 18:54:46,231 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:54:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 18:54:46,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915415572] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:54:46,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:54:46,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8
[2024-11-08 18:54:46,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642319010]
[2024-11-08 18:54:46,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:54:46,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 18:54:46,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:54:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 18:54:46,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2024-11-08 18:54:46,318 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 18:54:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:46,500 INFO L93 Difference]: Finished difference Result 98 states and 134 transitions.
[2024-11-08 18:54:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 18:54:46,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2024-11-08 18:54:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:46,505 INFO L225 Difference]: With dead ends: 98
[2024-11-08 18:54:46,505 INFO L226 Difference]: Without dead ends: 65
[2024-11-08 18:54:46,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2024-11-08 18:54:46,507 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:46,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 50 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 18:54:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-11-08 18:54:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48.
[2024-11-08 18:54:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions.
[2024-11-08 18:54:46,523 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 37
[2024-11-08 18:54:46,523 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:46,523 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions.
[2024-11-08 18:54:46,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 18:54:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions.
[2024-11-08 18:54:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 18:54:46,527 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:46,527 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:46,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 18:54:46,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:46,729 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:46,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:46,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2050125019, now seen corresponding path program 2 times
[2024-11-08 18:54:46,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:54:46,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022302523]
[2024-11-08 18:54:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:46,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:54:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-08 18:54:47,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:54:47,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022302523]
[2024-11-08 18:54:47,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022302523] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:54:47,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136900314]
[2024-11-08 18:54:47,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:54:47,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:47,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:47,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:54:47,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 18:54:47,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-08 18:54:47,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:54:47,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 18:54:47,367 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:54:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2024-11-08 18:54:47,484 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 18:54:47,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136900314] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:54:47,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 18:54:47,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2024-11-08 18:54:47,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353843950]
[2024-11-08 18:54:47,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:54:47,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 18:54:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:54:47,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 18:54:47,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2024-11-08 18:54:47,490 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:47,511 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions.
[2024-11-08 18:54:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 18:54:47,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41
[2024-11-08 18:54:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:47,513 INFO L225 Difference]: With dead ends: 52
[2024-11-08 18:54:47,513 INFO L226 Difference]: Without dead ends: 47
[2024-11-08 18:54:47,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2024-11-08 18:54:47,515 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:47,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 18:54:47,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2024-11-08 18:54:47,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2024-11-08 18:54:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions.
[2024-11-08 18:54:47,523 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 41
[2024-11-08 18:54:47,523 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:47,523 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions.
[2024-11-08 18:54:47,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions.
[2024-11-08 18:54:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 18:54:47,524 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:47,525 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:47,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 18:54:47,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:47,730 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:47,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1345591308, now seen corresponding path program 1 times
[2024-11-08 18:54:47,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:54:47,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734973790]
[2024-11-08 18:54:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:47,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:54:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2024-11-08 18:54:47,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:54:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734973790]
[2024-11-08 18:54:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734973790] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:54:47,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:54:47,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 18:54:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079907436]
[2024-11-08 18:54:47,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:54:47,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 18:54:47,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:54:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 18:54:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 18:54:47,947 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:47,982 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions.
[2024-11-08 18:54:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 18:54:47,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45
[2024-11-08 18:54:47,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:47,984 INFO L225 Difference]: With dead ends: 66
[2024-11-08 18:54:47,984 INFO L226 Difference]: Without dead ends: 49
[2024-11-08 18:54:47,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 18:54:47,986 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:47,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 18:54:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2024-11-08 18:54:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2024-11-08 18:54:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions.
[2024-11-08 18:54:48,000 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 45
[2024-11-08 18:54:48,001 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:48,001 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions.
[2024-11-08 18:54:48,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions.
[2024-11-08 18:54:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-08 18:54:48,005 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:48,005 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:48,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-08 18:54:48,006 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:48,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash 837633679, now seen corresponding path program 1 times
[2024-11-08 18:54:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:54:48,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318931032]
[2024-11-08 18:54:48,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:48,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:54:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 18:54:48,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-08 18:54:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 18:54:48,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-08 18:54:48,186 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-08 18:54:48,188 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-08 18:54:48,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-08 18:54:48,195 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1]
[2024-11-08 18:54:48,263 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-08 18:54:48,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:54:48 BoogieIcfgContainer
[2024-11-08 18:54:48,267 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-08 18:54:48,268 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-08 18:54:48,268 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-08 18:54:48,268 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-08 18:54:48,269 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:42" (3/4) ...
[2024-11-08 18:54:48,273 INFO L145 WitnessPrinter]: No result that supports witness generation found
[2024-11-08 18:54:48,274 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-08 18:54:48,275 INFO L158 Benchmark]: Toolchain (without parser) took 6694.00ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 82.4MB in the beginning and 117.9MB in the end (delta: -35.5MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB.
[2024-11-08 18:54:48,275 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 123.7MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 18:54:48,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.41ms. Allocated memory is still 123.7MB. Free memory was 82.2MB in the beginning and 69.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-08 18:54:48,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.69ms. Allocated memory is still 123.7MB. Free memory was 69.1MB in the beginning and 67.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 18:54:48,278 INFO L158 Benchmark]: Boogie Preprocessor took 89.60ms. Allocated memory is still 123.7MB. Free memory was 67.2MB in the beginning and 65.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 18:54:48,279 INFO L158 Benchmark]: RCFGBuilder took 644.62ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 64.9MB in the beginning and 142.2MB in the end (delta: -77.2MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB.
[2024-11-08 18:54:48,279 INFO L158 Benchmark]: TraceAbstraction took 5384.05ms. Allocated memory is still 174.1MB. Free memory was 141.4MB in the beginning and 117.9MB in the end (delta: 23.5MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB.
[2024-11-08 18:54:48,280 INFO L158 Benchmark]: Witness Printer took 6.40ms. Allocated memory is still 174.1MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 18:54:48,285 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.41ms. Allocated memory is still 123.7MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 501.41ms. Allocated memory is still 123.7MB. Free memory was 82.2MB in the beginning and 69.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 59.69ms. Allocated memory is still 123.7MB. Free memory was 69.1MB in the beginning and 67.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 89.60ms. Allocated memory is still 123.7MB. Free memory was 67.2MB in the beginning and 65.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 644.62ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 64.9MB in the beginning and 142.2MB in the end (delta: -77.2MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 5384.05ms. Allocated memory is still 174.1MB. Free memory was 141.4MB in the beginning and 117.9MB in the end (delta: 23.5MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB.
* Witness Printer took 6.40ms. Allocated memory is still 174.1MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 20]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: overapproximation of shiftLeft at line 69.
Possible FailurePath:
[L31] char string_A[5], string_B[5];
[L32] int i, j, nc_A, nc_B, found=0;
[L35] i=0
VAL [i=0, string_A={6:0}, string_B={7:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=1, string_A={6:0}, string_B={7:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=2, string_A={6:0}, string_B={7:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=3, string_A={6:0}, string_B={7:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=4, string_A={6:0}, string_B={7:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=5, string_A={6:0}, string_B={7:0}]
[L35] COND TRUE i<5
[L37] EXPR string_A[5 -1]
[L37] COND FALSE !(!(string_A[5 -1]=='\0'))
[L39] i=0
VAL [i=0, string_A={6:0}, string_B={7:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=1, string_A={6:0}, string_B={7:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=2, string_A={6:0}, string_B={7:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=3, string_A={6:0}, string_B={7:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=4, string_A={6:0}, string_B={7:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=5, string_A={6:0}, string_B={7:0}]
[L39] COND TRUE i<5
[L41] EXPR string_B[5 -1]
[L41] COND FALSE !(!(string_B[5 -1]=='\0'))
[L43] nc_A = 0
VAL [nc_A=0, string_A={6:0}, string_B={7:0}]
[L44] EXPR string_A[nc_A]
[L44] COND TRUE string_A[nc_A]!='\0'
[L45] nc_A++
VAL [nc_A=1, string_A={6:0}, string_B={7:0}]
[L44] EXPR string_A[nc_A]
[L44] COND FALSE !(string_A[nc_A]!='\0')
[L47] nc_B = 0
VAL [nc_A=1, nc_B=0, string_A={6:0}, string_B={7:0}]
[L48] EXPR string_B[nc_B]
[L48] COND TRUE string_B[nc_B]!='\0'
[L49] nc_B++
VAL [nc_A=1, nc_B=1, string_A={6:0}, string_B={7:0}]
[L48] EXPR string_B[nc_B]
[L48] COND FALSE !(string_B[nc_B]!='\0')
[L51] COND FALSE !(!(nc_B >= nc_A))
[L54] EXPR j=0
[L54] i=j=0
VAL [i=0, j=0, nc_A=1, nc_B=1, string_A={6:0}, string_B={7:0}]
[L55] COND FALSE !((i<nc_A) && (j<nc_B))
[L55] COND TRUE (i<nc_A) && (j<nc_B)
[L57] EXPR string_A[i]
[L57] EXPR string_B[j]
[L57] COND TRUE string_A[i] == string_B[j]
[L59] i++
[L60] j++
VAL [i=1, j=1, nc_A=1, nc_B=1, string_A={6:0}, string_B={7:0}]
[L55] COND TRUE (i<nc_A) && (j<nc_B)
[L69] EXPR (j>nc_B-1)<<i
VAL [string_A={6:0}, string_B={7:0}]
[L69] found = (j>nc_B-1)<<i
[L71] CALL __VERIFIER_assert(found == 0 || found == 1)
[L19] COND TRUE !(cond)
[L20] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 89 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 89 mSDsluCounter, 405 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 250 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 228 IncrementalHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 155 mSDtfsCounter, 228 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 189 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=6, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 381 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 260/329 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-11-08 18:54:48,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/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_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/string-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/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 fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 18:54:51,500 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 18:54:51,651 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-08 18:54:51,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 18:54:51,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 18:54:51,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 18:54:51,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 18:54:51,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 18:54:51,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 18:54:51,713 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 18:54:51,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 18:54:51,714 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 18:54:51,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 18:54:51,716 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 18:54:51,716 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 18:54:51,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 18:54:51,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 18:54:51,721 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 18:54:51,722 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 18:54:51,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 18:54:51,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 18:54:51,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 18:54:51,727 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 18:54:51,728 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 18:54:51,728 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-08 18:54:51,729 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 18:54:51,729 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-08 18:54:51,729 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 18:54:51,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 18:54:51,730 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 18:54:51,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 18:54:51,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 18:54:51,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 18:54:51,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 18:54:51,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 18:54:51,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 18:54:51,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 18:54:51,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 18:54:51,738 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-08 18:54:51,739 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-08 18:54:51,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 18:54:51,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 18:54:51,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 18:54:51,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 18:54:51,741 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_2362318a-aaa8-4d27-b118-112f98e711ce/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892
[2024-11-08 18:54:52,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 18:54:52,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 18:54:52,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 18:54:52,386 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 18:54:52,386 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 18:54:52,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/loops/string-2.i
Unable to find full path for "g++"
[2024-11-08 18:54:54,956 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 18:54:55,340 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 18:54:55,342 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/sv-benchmarks/c/loops/string-2.i
[2024-11-08 18:54:55,357 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/data/997eaab28/905ddc1a03af4d75bf6cdf2d84ebc824/FLAG0a498a031
[2024-11-08 18:54:55,596 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/data/997eaab28/905ddc1a03af4d75bf6cdf2d84ebc824
[2024-11-08 18:54:55,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 18:54:55,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 18:54:55,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 18:54:55,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 18:54:55,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 18:54:55,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:55" (1/1) ...
[2024-11-08 18:54:55,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423c063c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:55, skipping insertion in model container
[2024-11-08 18:54:55,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:55" (1/1) ...
[2024-11-08 18:54:55,656 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 18:54:55,962 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_2362318a-aaa8-4d27-b118-112f98e711ce/sv-benchmarks/c/loops/string-2.i[896,909]
[2024-11-08 18:54:55,999 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 18:54:56,012 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 18:54:56,031 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_2362318a-aaa8-4d27-b118-112f98e711ce/sv-benchmarks/c/loops/string-2.i[896,909]
[2024-11-08 18:54:56,048 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 18:54:56,072 INFO L204 MainTranslator]: Completed translation
[2024-11-08 18:54:56,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56 WrapperNode
[2024-11-08 18:54:56,073 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 18:54:56,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 18:54:56,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 18:54:56,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 18:54:56,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,178 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 116
[2024-11-08 18:54:56,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 18:54:56,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 18:54:56,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 18:54:56,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 18:54:56,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,219 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1].
[2024-11-08 18:54:56,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 18:54:56,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 18:54:56,246 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 18:54:56,246 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 18:54:56,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (1/1) ...
[2024-11-08 18:54:56,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 18:54:56,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:56,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 18:54:56,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 18:54:56,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 18:54:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0
[2024-11-08 18:54:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1
[2024-11-08 18:54:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2
[2024-11-08 18:54:56,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-08 18:54:56,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-08 18:54:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2
[2024-11-08 18:54:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-08 18:54:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 18:54:56,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 18:54:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0
[2024-11-08 18:54:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1
[2024-11-08 18:54:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2
[2024-11-08 18:54:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-08 18:54:56,502 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 18:54:56,505 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 18:54:56,898 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live.
[2024-11-08 18:54:56,898 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 18:54:56,929 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 18:54:56,929 INFO L316 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-08 18:54:56,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:56 BoogieIcfgContainer
[2024-11-08 18:54:56,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 18:54:56,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 18:54:56,938 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 18:54:56,943 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 18:54:56,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:54:55" (1/3) ...
[2024-11-08 18:54:56,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cea8438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:56, skipping insertion in model container
[2024-11-08 18:54:56,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:56" (2/3) ...
[2024-11-08 18:54:56,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cea8438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:56, skipping insertion in model container
[2024-11-08 18:54:56,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:56" (3/3) ...
[2024-11-08 18:54:56,950 INFO L112 eAbstractionObserver]: Analyzing ICFG string-2.i
[2024-11-08 18:54:56,975 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 18:54:56,976 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 18:54:57,075 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 18:54:57,086 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;@241c465f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 18:54:57,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 18:54:57,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.64) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-11-08 18:54:57,103 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:57,104 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:57,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:57,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1898840033, now seen corresponding path program 1 times
[2024-11-08 18:54:57,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 18:54:57,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434784760]
[2024-11-08 18:54:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:57,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:57,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:57,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:54:57,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 18:54:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:57,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-08 18:54:57,344 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:54:57,376 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 18:54:57,376 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 18:54:57,377 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 18:54:57,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434784760]
[2024-11-08 18:54:57,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434784760] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:54:57,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:54:57,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 18:54:57,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496661223]
[2024-11-08 18:54:57,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:54:57,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-08 18:54:57,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 18:54:57,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-08 18:54:57,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 18:54:57,433 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.64) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 18:54:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:57,458 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions.
[2024-11-08 18:54:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-08 18:54:57,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2024-11-08 18:54:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:57,472 INFO L225 Difference]: With dead ends: 42
[2024-11-08 18:54:57,473 INFO L226 Difference]: Without dead ends: 23
[2024-11-08 18:54:57,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 18:54:57,484 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:57,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 18:54:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2024-11-08 18:54:57,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2024-11-08 18:54:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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 18:54:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions.
[2024-11-08 18:54:57,533 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 16
[2024-11-08 18:54:57,534 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:57,536 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions.
[2024-11-08 18:54:57,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 18:54:57,536 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions.
[2024-11-08 18:54:57,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-08 18:54:57,539 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:57,539 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:57,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 18:54:57,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:57,745 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:57,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:57,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1620182314, now seen corresponding path program 1 times
[2024-11-08 18:54:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 18:54:57,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331245462]
[2024-11-08 18:54:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:57,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:57,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:54:57,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 18:54:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:57,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-08 18:54:57,865 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:54:57,896 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 18:54:57,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 18:54:57,897 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 18:54:57,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331245462]
[2024-11-08 18:54:57,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331245462] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:54:57,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:54:57,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 18:54:57,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326120721]
[2024-11-08 18:54:57,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:54:57,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 18:54:57,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 18:54:57,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 18:54:57,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 18:54:57,902 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18:54:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:58,012 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions.
[2024-11-08 18:54:58,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 18:54:58,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18
[2024-11-08 18:54:58,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:58,016 INFO L225 Difference]: With dead ends: 50
[2024-11-08 18:54:58,017 INFO L226 Difference]: Without dead ends: 31
[2024-11-08 18:54:58,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 18:54:58,019 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:58,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 18:54:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2024-11-08 18:54:58,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27.
[2024-11-08 18:54:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 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 18:54:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions.
[2024-11-08 18:54:58,030 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 18
[2024-11-08 18:54:58,030 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:58,030 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions.
[2024-11-08 18:54:58,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18:54:58,031 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions.
[2024-11-08 18:54:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-11-08 18:54:58,032 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:58,032 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:58,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 18:54:58,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:58,233 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:58,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1829697846, now seen corresponding path program 1 times
[2024-11-08 18:54:58,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 18:54:58,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058648036]
[2024-11-08 18:54:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:58,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:58,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:58,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:54:58,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 18:54:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:58,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 18:54:58,373 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:54:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 18:54:58,425 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:54:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 18:54:58,474 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 18:54:58,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058648036]
[2024-11-08 18:54:58,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058648036] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:54:58,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 18:54:58,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2024-11-08 18:54:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749132123]
[2024-11-08 18:54:58,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:54:58,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 18:54:58,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 18:54:58,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 18:54:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2024-11-08 18:54:58,478 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:58,806 INFO L93 Difference]: Finished difference Result 74 states and 110 transitions.
[2024-11-08 18:54:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 18:54:58,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2024-11-08 18:54:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:58,809 INFO L225 Difference]: With dead ends: 74
[2024-11-08 18:54:58,809 INFO L226 Difference]: Without dead ends: 53
[2024-11-08 18:54:58,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2024-11-08 18:54:58,812 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 44 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:58,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 44 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 18:54:58,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2024-11-08 18:54:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37.
[2024-11-08 18:54:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 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 18:54:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions.
[2024-11-08 18:54:58,822 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 22
[2024-11-08 18:54:58,822 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:58,822 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions.
[2024-11-08 18:54:58,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions.
[2024-11-08 18:54:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2024-11-08 18:54:58,824 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:58,824 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:58,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-08 18:54:59,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:59,025 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:59,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:59,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1819188394, now seen corresponding path program 2 times
[2024-11-08 18:54:59,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 18:54:59,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261723024]
[2024-11-08 18:54:59,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:54:59,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:59,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:59,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:54:59,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 18:54:59,167 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-08 18:54:59,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:54:59,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 18:54:59,176 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:54:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2024-11-08 18:54:59,320 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 18:54:59,321 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 18:54:59,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261723024]
[2024-11-08 18:54:59,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261723024] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:54:59,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:54:59,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 18:54:59,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199935507]
[2024-11-08 18:54:59,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:54:59,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 18:54:59,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 18:54:59,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 18:54:59,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 18:54:59,324 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:54:59,458 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions.
[2024-11-08 18:54:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 18:54:59,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2024-11-08 18:54:59,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:54:59,460 INFO L225 Difference]: With dead ends: 50
[2024-11-08 18:54:59,460 INFO L226 Difference]: Without dead ends: 39
[2024-11-08 18:54:59,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 18:54:59,462 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 18:54:59,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 18:54:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2024-11-08 18:54:59,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2024-11-08 18:54:59,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 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 18:54:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions.
[2024-11-08 18:54:59,472 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 34
[2024-11-08 18:54:59,472 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:54:59,473 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions.
[2024-11-08 18:54:59,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:54:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions.
[2024-11-08 18:54:59,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-08 18:54:59,475 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:54:59,475 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:54:59,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-08 18:54:59,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:59,679 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:54:59,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:54:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash -64320283, now seen corresponding path program 1 times
[2024-11-08 18:54:59,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 18:54:59,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627194704]
[2024-11-08 18:54:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:54:59,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:54:59,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:54:59,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:54:59,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 18:54:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:54:59,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 18:54:59,845 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:55:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-11-08 18:55:00,040 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:55:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2024-11-08 18:55:00,278 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 18:55:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627194704]
[2024-11-08 18:55:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627194704] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:55:00,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 18:55:00,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2024-11-08 18:55:00,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807149511]
[2024-11-08 18:55:00,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:55:00,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 18:55:00,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 18:55:00,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 18:55:00,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2024-11-08 18:55:00,286 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 18:55:00,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:55:00,469 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions.
[2024-11-08 18:55:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 18:55:00,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2024-11-08 18:55:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:55:00,471 INFO L225 Difference]: With dead ends: 44
[2024-11-08 18:55:00,471 INFO L226 Difference]: Without dead ends: 40
[2024-11-08 18:55:00,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2024-11-08 18:55:00,473 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 18:55:00,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 18:55:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2024-11-08 18:55:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2024-11-08 18:55:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 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 18:55:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions.
[2024-11-08 18:55:00,483 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 36
[2024-11-08 18:55:00,483 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:55:00,484 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions.
[2024-11-08 18:55:00,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 18:55:00,484 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions.
[2024-11-08 18:55:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2024-11-08 18:55:00,485 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:55:00,486 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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 18:55:00,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 18:55:00,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:55:00,687 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:55:00,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:55:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash 441568430, now seen corresponding path program 1 times
[2024-11-08 18:55:00,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 18:55:00,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528632935]
[2024-11-08 18:55:00,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:55:00,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:55:00,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:55:00,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:55:00,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 18:55:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:55:00,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 18:55:00,831 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:55:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2024-11-08 18:55:00,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 18:55:00,889 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 18:55:00,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528632935]
[2024-11-08 18:55:00,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528632935] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:55:00,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:55:00,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 18:55:00,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843888499]
[2024-11-08 18:55:00,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:55:00,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 18:55:00,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 18:55:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 18:55:00,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 18:55:00,893 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:55:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:55:00,990 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions.
[2024-11-08 18:55:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 18:55:00,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39
[2024-11-08 18:55:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:55:00,992 INFO L225 Difference]: With dead ends: 56
[2024-11-08 18:55:00,992 INFO L226 Difference]: Without dead ends: 42
[2024-11-08 18:55:00,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 18:55:00,994 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 18:55:00,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 18:55:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2024-11-08 18:55:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2024-11-08 18:55:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:55:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions.
[2024-11-08 18:55:01,004 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 39
[2024-11-08 18:55:01,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:55:01,004 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions.
[2024-11-08 18:55:01,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:55:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions.
[2024-11-08 18:55:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 18:55:01,006 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:55:01,006 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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 18:55:01,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-08 18:55:01,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:55:01,208 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:55:01,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:55:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2086776329, now seen corresponding path program 1 times
[2024-11-08 18:55:01,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 18:55:01,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504426399]
[2024-11-08 18:55:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:55:01,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:55:01,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:55:01,211 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:55:01,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 18:55:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:55:01,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 18:55:01,348 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:55:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-11-08 18:55:01,421 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:55:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-11-08 18:55:01,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 18:55:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504426399]
[2024-11-08 18:55:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504426399] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:55:01,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 18:55:01,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-08 18:55:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761399788]
[2024-11-08 18:55:01,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:55:01,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 18:55:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 18:55:01,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 18:55:01,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2024-11-08 18:55:01,567 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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 18:55:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 18:55:02,150 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions.
[2024-11-08 18:55:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 18:55:02,151 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41
[2024-11-08 18:55:02,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 18:55:02,152 INFO L225 Difference]: With dead ends: 97
[2024-11-08 18:55:02,152 INFO L226 Difference]: Without dead ends: 66
[2024-11-08 18:55:02,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2024-11-08 18:55:02,154 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 59 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-08 18:55:02,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 83 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-08 18:55:02,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2024-11-08 18:55:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46.
[2024-11-08 18:55:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:55:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions.
[2024-11-08 18:55:02,165 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 41
[2024-11-08 18:55:02,166 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 18:55:02,166 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions.
[2024-11-08 18:55:02,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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 18:55:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions.
[2024-11-08 18:55:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 18:55:02,168 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 18:55:02,168 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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 18:55:02,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-08 18:55:02,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:55:02,373 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 18:55:02,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:55:02,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1591927401, now seen corresponding path program 2 times
[2024-11-08 18:55:02,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 18:55:02,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448253998]
[2024-11-08 18:55:02,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:55:02,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:55:02,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:55:02,378 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:55:02,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 18:55:02,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 18:55:02,697 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat
[2024-11-08 18:55:02,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-08 18:55:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 18:55:02,963 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace
[2024-11-08 18:55:02,963 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-08 18:55:02,965 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-08 18:55:03,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-08 18:55:03,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:55:03,172 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1]
[2024-11-08 18:55:03,219 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-08 18:55:03,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:55:03 BoogieIcfgContainer
[2024-11-08 18:55:03,222 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-08 18:55:03,223 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-08 18:55:03,223 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-08 18:55:03,223 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-08 18:55:03,224 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:56" (3/4) ...
[2024-11-08 18:55:03,225 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample
[2024-11-08 18:55:03,301 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/witness.graphml
[2024-11-08 18:55:03,301 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-08 18:55:03,302 INFO L158 Benchmark]: Toolchain (without parser) took 7697.41ms. Allocated memory was 71.3MB in the beginning and 117.4MB in the end (delta: 46.1MB). Free memory was 47.6MB in the beginning and 82.2MB in the end (delta: -34.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB.
[2024-11-08 18:55:03,303 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 92.1kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 18:55:03,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.81ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 33.8MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-08 18:55:03,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.71ms. Allocated memory is still 96.5MB. Free memory was 76.6MB in the beginning and 75.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 18:55:03,304 INFO L158 Benchmark]: Boogie Preprocessor took 64.78ms. Allocated memory is still 96.5MB. Free memory was 75.0MB in the beginning and 72.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 18:55:03,305 INFO L158 Benchmark]: RCFGBuilder took 686.65ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 57.7MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-08 18:55:03,305 INFO L158 Benchmark]: TraceAbstraction took 6285.60ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 57.0MB in the beginning and 85.4MB in the end (delta: -28.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 18:55:03,306 INFO L158 Benchmark]: Witness Printer took 78.29ms. Allocated memory is still 117.4MB. Free memory was 85.4MB in the beginning and 82.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 18:55:03,308 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 92.1kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 465.81ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 33.8MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 91.71ms. Allocated memory is still 96.5MB. Free memory was 76.6MB in the beginning and 75.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 64.78ms. Allocated memory is still 96.5MB. Free memory was 75.0MB in the beginning and 72.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 686.65ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 57.7MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 6285.60ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 57.0MB in the beginning and 85.4MB in the end (delta: -28.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 78.29ms. Allocated memory is still 117.4MB. Free memory was 85.4MB in the beginning and 82.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: 20]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L31] char string_A[5], string_B[5];
[L32] int i, j, nc_A, nc_B, found=0;
[L35] i=0
VAL [i=0, string_A={-1610612735:0}, string_B={536870913:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=1, string_A={-1610612735:0}, string_B={536870913:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=2, string_A={-1610612735:0}, string_B={536870913:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=3, string_A={-1610612735:0}, string_B={536870913:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=4, string_A={-1610612735:0}, string_B={536870913:0}]
[L35] COND FALSE !(i<5)
[L35] COND TRUE i<5
[L36] string_A[i]=__VERIFIER_nondet_char()
[L35] i++
VAL [i=5, string_A={-1610612735:0}, string_B={536870913:0}]
[L35] COND TRUE i<5
[L37] EXPR string_A[5 -1]
[L37] COND FALSE !(!(string_A[5 -1]=='\0'))
[L39] i=0
VAL [i=0, string_A={-1610612735:0}, string_B={536870913:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=1, string_A={-1610612735:0}, string_B={536870913:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=2, string_A={-1610612735:0}, string_B={536870913:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=3, string_A={-1610612735:0}, string_B={536870913:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=4, string_A={-1610612735:0}, string_B={536870913:0}]
[L39] COND FALSE !(i<5)
[L39] COND TRUE i<5
[L40] string_B[i]=__VERIFIER_nondet_char()
[L39] i++
VAL [i=5, string_A={-1610612735:0}, string_B={536870913:0}]
[L39] COND TRUE i<5
[L41] EXPR string_B[5 -1]
[L41] COND FALSE !(!(string_B[5 -1]=='\0'))
[L43] nc_A = 0
VAL [nc_A=0, string_A={-1610612735:0}, string_B={536870913:0}]
[L44] EXPR string_A[nc_A]
[L44] COND TRUE string_A[nc_A]!='\0'
[L45] nc_A++
VAL [nc_A=1, string_A={-1610612735:0}, string_B={536870913:0}]
[L44] EXPR string_A[nc_A]
[L44] COND FALSE !(string_A[nc_A]!='\0')
[L47] nc_B = 0
VAL [nc_A=1, nc_B=0, string_A={-1610612735:0}, string_B={536870913:0}]
[L48] EXPR string_B[nc_B]
[L48] COND TRUE string_B[nc_B]!='\0'
[L49] nc_B++
VAL [nc_A=1, nc_B=1, string_A={-1610612735:0}, string_B={536870913:0}]
[L48] EXPR string_B[nc_B]
[L48] COND FALSE !(string_B[nc_B]!='\0')
[L51] COND FALSE !(!(nc_B >= nc_A))
[L54] EXPR j=0
[L54] i=j=0
VAL [i=0, j=0, nc_A=1, nc_B=1, string_A={-1610612735:0}, string_B={536870913:0}]
[L55] COND FALSE !((i<nc_A) && (j<nc_B))
[L55] COND TRUE (i<nc_A) && (j<nc_B)
[L57] EXPR string_A[i]
[L57] EXPR string_B[j]
[L57] COND TRUE string_A[i] == string_B[j]
[L59] i++
[L60] j++
VAL [i=1, j=1, nc_A=1, nc_B=1, string_A={-1610612735:0}, string_B={536870913:0}]
[L55] COND TRUE (i<nc_A) && (j<nc_B)
[L69] found = (j>nc_B-1)<<i
[L71] CALL __VERIFIER_assert(found == 0 || found == 1)
[L19] COND TRUE !(cond)
[L20] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 374 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 213 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 514 IncrementalHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 161 mSDtfsCounter, 514 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=7, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 251 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 482 SizeOfPredicates, 2 NumberOfNonLiveVariables, 524 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 170/213 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2024-11-08 18:55:03,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2362318a-aaa8-4d27-b118-112f98e711ce/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE