./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_del_iter.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 9bd2c7ff
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_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu --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 cce1bb7a06b9dd56fbf663e182ffe801720ee05ee19a126a08070f1616bc4afe
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:42:16,906 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:42:16,978 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-19 07:42:16,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:42:16,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:42:17,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:42:17,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:42:17,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:42:17,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:42:17,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:42:17,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:42:17,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:42:17,018 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:42:17,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:42:17,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:42:17,020 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:42:17,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:42:17,022 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:42:17,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:42:17,023 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:42:17,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:42:17,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:42:17,025 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:42:17,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:42:17,026 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:42:17,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:42:17,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:42:17,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:42:17,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:42:17,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:42:17,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:42:17,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:42:17,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:42:17,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:42:17,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:42:17,031 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:42:17,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:42:17,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:42:17,032 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:42:17,033 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_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cce1bb7a06b9dd56fbf663e182ffe801720ee05ee19a126a08070f1616bc4afe
[2023-11-19 07:42:17,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:42:17,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:42:17,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:42:17,418 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:42:17,419 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:42:17,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/verifythis/tree_del_iter.c
[2023-11-19 07:42:20,529 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:42:20,786 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:42:20,795 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/sv-benchmarks/c/verifythis/tree_del_iter.c
[2023-11-19 07:42:20,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/data/b66eda5eb/0b8218bec79b43e98f4a92c4a1259e07/FLAGfa389e884
[2023-11-19 07:42:20,826 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/data/b66eda5eb/0b8218bec79b43e98f4a92c4a1259e07
[2023-11-19 07:42:20,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:42:20,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:42:20,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:42:20,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:42:20,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:42:20,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:20" (1/1) ...
[2023-11-19 07:42:20,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b161a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:20, skipping insertion in model container
[2023-11-19 07:42:20,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:20" (1/1) ...
[2023-11-19 07:42:20,883 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:42:21,073 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599]
[2023-11-19 07:42:21,093 WARN L1588 CHandler]: Possible shadowing of function min
[2023-11-19 07:42:21,108 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:42:21,120 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:42:21,134 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599]
[2023-11-19 07:42:21,143 WARN L1588 CHandler]: Possible shadowing of function min
[2023-11-19 07:42:21,155 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:42:21,173 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:42:21,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21 WrapperNode
[2023-11-19 07:42:21,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:42:21,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:42:21,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:42:21,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:42:21,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,223 INFO L138 Inliner]: procedures = 29, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 114
[2023-11-19 07:42:21,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:42:21,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:42:21,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:42:21,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:42:21,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:42:21,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:42:21,270 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:42:21,270 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:42:21,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (1/1) ...
[2023-11-19 07:42:21,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:42:21,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:42:21,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:42:21,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:42:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:42:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:42:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-11-19 07:42:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:42:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure min
[2023-11-19 07:42:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure min
[2023-11-19 07:42:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:42:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit
[2023-11-19 07:42:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit
[2023-11-19 07:42:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-11-19 07:42:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree
[2023-11-19 07:42:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree
[2023-11-19 07:42:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:42:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-19 07:42:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure size
[2023-11-19 07:42:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure size
[2023-11-19 07:42:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:42:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:42:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-11-19 07:42:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-11-19 07:42:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder
[2023-11-19 07:42:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder
[2023-11-19 07:42:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:42:21,481 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:42:21,484 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:42:21,918 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:42:21,931 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:42:21,931 INFO L302 CfgBuilder]: Removed 3 assume(true) statements.
[2023-11-19 07:42:21,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:21 BoogieIcfgContainer
[2023-11-19 07:42:21,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:42:21,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:42:21,939 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:42:21,943 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:42:21,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:20" (1/3) ...
[2023-11-19 07:42:21,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ff31db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:21, skipping insertion in model container
[2023-11-19 07:42:21,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:21" (2/3) ...
[2023-11-19 07:42:21,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ff31db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:21, skipping insertion in model container
[2023-11-19 07:42:21,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:21" (3/3) ...
[2023-11-19 07:42:21,946 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c
[2023-11-19 07:42:21,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:42:21,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 07:42:22,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:42:22,023 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@1623e57f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:42:22,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 07:42:22,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 57 states have internal predecessors, (72), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-11-19 07:42:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2023-11-19 07:42:22,039 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:42:22,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:42:22,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:42:22,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:22,046 INFO L85 PathProgramCache]: Analyzing trace with hash -999986209, now seen corresponding path program 1 times
[2023-11-19 07:42:22,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:22,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275455910]
[2023-11-19 07:42:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:42:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-19 07:42:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2023-11-19 07:42:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2023-11-19 07:42:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:42:22,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:42:22,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275455910]
[2023-11-19 07:42:22,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275455910] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:42:22,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:42:22,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-19 07:42:22,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424321165]
[2023-11-19 07:42:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:42:22,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-19 07:42:22,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:42:22,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-19 07:42:22,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2023-11-19 07:42:22,996 INFO L87 Difference]: Start difference. First operand has 84 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 57 states have internal predecessors, (72), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2023-11-19 07:42:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:42:23,383 INFO L93 Difference]: Finished difference Result 150 states and 209 transitions.
[2023-11-19 07:42:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-11-19 07:42:23,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37
[2023-11-19 07:42:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:42:23,397 INFO L225 Difference]: With dead ends: 150
[2023-11-19 07:42:23,397 INFO L226 Difference]: Without dead ends: 85
[2023-11-19 07:42:23,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-11-19 07:42:23,405 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 64 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-19 07:42:23,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 285 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-19 07:42:23,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2023-11-19 07:42:23,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80.
[2023-11-19 07:42:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 53 states have internal predecessors, (61), 20 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (23), 20 states have call predecessors, (23), 20 states have call successors, (23)
[2023-11-19 07:42:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions.
[2023-11-19 07:42:23,460 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 37
[2023-11-19 07:42:23,460 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:42:23,460 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions.
[2023-11-19 07:42:23,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2023-11-19 07:42:23,461 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions.
[2023-11-19 07:42:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2023-11-19 07:42:23,464 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:42:23,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:42:23,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:42:23,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:42:23,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:23,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2141758024, now seen corresponding path program 1 times
[2023-11-19 07:42:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597861270]
[2023-11-19 07:42:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:23,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:23,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:42:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2023-11-19 07:42:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:42:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:24,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2023-11-19 07:42:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2023-11-19 07:42:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-11-19 07:42:24,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:42:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597861270]
[2023-11-19 07:42:24,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597861270] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:42:24,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514678305]
[2023-11-19 07:42:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:24,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:42:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:42:24,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:42:24,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 07:42:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:24,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 25 conjunts are in the unsatisfiable core
[2023-11-19 07:42:24,211 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:42:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-11-19 07:42:24,378 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:42:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-11-19 07:42:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514678305] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:42:24,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:42:24,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 13
[2023-11-19 07:42:24,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420531472]
[2023-11-19 07:42:24,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:42:24,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-19 07:42:24,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:42:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-19 07:42:24,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156
[2023-11-19 07:42:24,605 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-11-19 07:42:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:42:25,160 INFO L93 Difference]: Finished difference Result 144 states and 190 transitions.
[2023-11-19 07:42:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-11-19 07:42:25,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 49
[2023-11-19 07:42:25,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:42:25,169 INFO L225 Difference]: With dead ends: 144
[2023-11-19 07:42:25,169 INFO L226 Difference]: Without dead ends: 85
[2023-11-19 07:42:25,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272
[2023-11-19 07:42:25,175 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 45 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-19 07:42:25,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 441 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-19 07:42:25,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2023-11-19 07:42:25,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82.
[2023-11-19 07:42:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.169811320754717) internal successors, (62), 55 states have internal predecessors, (62), 20 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25)
[2023-11-19 07:42:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions.
[2023-11-19 07:42:25,197 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 49
[2023-11-19 07:42:25,198 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:42:25,198 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions.
[2023-11-19 07:42:25,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-11-19 07:42:25,198 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions.
[2023-11-19 07:42:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2023-11-19 07:42:25,201 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:42:25,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:42:25,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 07:42:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:42:25,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:42:25,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash 15343169, now seen corresponding path program 1 times
[2023-11-19 07:42:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:25,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511726841]
[2023-11-19 07:42:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:25,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:42:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2023-11-19 07:42:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2023-11-19 07:42:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:42:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2023-11-19 07:42:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2023-11-19 07:42:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2023-11-19 07:42:25,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:42:25,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511726841]
[2023-11-19 07:42:25,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511726841] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:42:25,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:42:25,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-11-19 07:42:25,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737204111]
[2023-11-19 07:42:25,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:42:25,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-11-19 07:42:25,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:42:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-11-19 07:42:25,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2023-11-19 07:42:25,800 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9)
[2023-11-19 07:42:26,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:42:26,226 INFO L93 Difference]: Finished difference Result 144 states and 190 transitions.
[2023-11-19 07:42:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2023-11-19 07:42:26,227 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61
[2023-11-19 07:42:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:42:26,236 INFO L225 Difference]: With dead ends: 144
[2023-11-19 07:42:26,236 INFO L226 Difference]: Without dead ends: 87
[2023-11-19 07:42:26,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210
[2023-11-19 07:42:26,243 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 117 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-19 07:42:26,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 356 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-19 07:42:26,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2023-11-19 07:42:26,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84.
[2023-11-19 07:42:26,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 57 states have internal predecessors, (63), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (27), 20 states have call predecessors, (27), 20 states have call successors, (27)
[2023-11-19 07:42:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions.
[2023-11-19 07:42:26,275 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 61
[2023-11-19 07:42:26,275 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:42:26,275 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions.
[2023-11-19 07:42:26,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9)
[2023-11-19 07:42:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions.
[2023-11-19 07:42:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2023-11-19 07:42:26,284 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:42:26,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:42:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 07:42:26,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:42:26,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1095896435, now seen corresponding path program 1 times
[2023-11-19 07:42:26,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:26,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195255248]
[2023-11-19 07:42:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:26,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:42:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2023-11-19 07:42:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:42:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2023-11-19 07:42:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:42:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:42:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2023-11-19 07:42:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2023-11-19 07:42:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2023-11-19 07:42:26,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:42:26,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195255248]
[2023-11-19 07:42:26,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195255248] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:42:26,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639221042]
[2023-11-19 07:42:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:26,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:42:26,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:42:26,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:42:26,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 07:42:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:27,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 25 conjunts are in the unsatisfiable core
[2023-11-19 07:42:27,127 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:42:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2023-11-19 07:42:27,217 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:42:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2023-11-19 07:42:27,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639221042] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:42:27,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:42:27,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 17
[2023-11-19 07:42:27,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587229564]
[2023-11-19 07:42:27,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:42:27,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2023-11-19 07:42:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:42:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2023-11-19 07:42:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272
[2023-11-19 07:42:27,446 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 17 states, 16 states have (on average 3.0) internal successors, (48), 13 states have internal predecessors, (48), 7 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12)
[2023-11-19 07:42:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:42:28,005 INFO L93 Difference]: Finished difference Result 136 states and 178 transitions.
[2023-11-19 07:42:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-11-19 07:42:28,007 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 13 states have internal predecessors, (48), 7 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 74
[2023-11-19 07:42:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:42:28,012 INFO L225 Difference]: With dead ends: 136
[2023-11-19 07:42:28,013 INFO L226 Difference]: Without dead ends: 87
[2023-11-19 07:42:28,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600
[2023-11-19 07:42:28,016 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 152 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-19 07:42:28,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 400 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-19 07:42:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2023-11-19 07:42:28,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86.
[2023-11-19 07:42:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 59 states have internal predecessors, (64), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30)
[2023-11-19 07:42:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 114 transitions.
[2023-11-19 07:42:28,055 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 114 transitions. Word has length 74
[2023-11-19 07:42:28,056 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:42:28,056 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 114 transitions.
[2023-11-19 07:42:28,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 13 states have internal predecessors, (48), 7 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12)
[2023-11-19 07:42:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 114 transitions.
[2023-11-19 07:42:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2023-11-19 07:42:28,059 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:42:28,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:42:28,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 07:42:28,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:42:28,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:42:28,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash 373085558, now seen corresponding path program 1 times
[2023-11-19 07:42:28,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:28,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109427469]
[2023-11-19 07:42:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:42:28,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:42:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:42:28,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:42:28,394 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:42:28,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-19 07:42:28,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:42:28,400 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2023-11-19 07:42:28,404 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 07:42:28,433 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret8
[2023-11-19 07:42:28,434 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret9
[2023-11-19 07:42:28,434 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret45
[2023-11-19 07:42:28,435 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11
[2023-11-19 07:42:28,435 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11
[2023-11-19 07:42:28,438 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated
[2023-11-19 07:42:28,438 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem13
[2023-11-19 07:42:28,439 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem13
[2023-11-19 07:42:28,439 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated
[2023-11-19 07:42:28,439 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated
[2023-11-19 07:42:28,440 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28
[2023-11-19 07:42:28,441 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28
[2023-11-19 07:42:28,441 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
[2023-11-19 07:42:28,441 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28
[2023-11-19 07:42:28,441 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30
[2023-11-19 07:42:28,442 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
[2023-11-19 07:42:28,442 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30
[2023-11-19 07:42:28,442 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28
[2023-11-19 07:42:28,442 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated
[2023-11-19 07:42:28,443 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
[2023-11-19 07:42:28,443 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret33 could not be translated
[2023-11-19 07:42:28,443 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34
[2023-11-19 07:42:28,444 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34
[2023-11-19 07:42:28,444 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem22
[2023-11-19 07:42:28,445 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem22
[2023-11-19 07:42:28,445 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret23 could not be translated
[2023-11-19 07:42:28,446 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem26
[2023-11-19 07:42:28,446 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret27 could not be translated
[2023-11-19 07:42:28,447 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem26
[2023-11-19 07:42:28,447 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34
[2023-11-19 07:42:28,448 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret35 could not be translated
[2023-11-19 07:42:28,448 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34
[2023-11-19 07:42:28,448 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated
[2023-11-19 07:42:28,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:42:28 BoogieIcfgContainer
[2023-11-19 07:42:28,461 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 07:42:28,461 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 07:42:28,461 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-11-19 07:42:28,462 INFO L274 PluginConnector]: Witness Printer initialized
[2023-11-19 07:42:28,462 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:21" (3/4) ...
[2023-11-19 07:42:28,463 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2023-11-19 07:42:28,474 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret8
[2023-11-19 07:42:28,475 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret9
[2023-11-19 07:42:28,475 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret45
[2023-11-19 07:42:28,476 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11
[2023-11-19 07:42:28,476 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11
[2023-11-19 07:42:28,476 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated
[2023-11-19 07:42:28,477 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem13
[2023-11-19 07:42:28,477 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem13
[2023-11-19 07:42:28,477 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated
[2023-11-19 07:42:28,478 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated
[2023-11-19 07:42:28,478 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28
[2023-11-19 07:42:28,479 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28
[2023-11-19 07:42:28,479 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
[2023-11-19 07:42:28,479 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30
[2023-11-19 07:42:28,479 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28
[2023-11-19 07:42:28,480 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
[2023-11-19 07:42:28,480 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30
[2023-11-19 07:42:28,480 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated
[2023-11-19 07:42:28,480 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28
[2023-11-19 07:42:28,480 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
[2023-11-19 07:42:28,481 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret33 could not be translated
[2023-11-19 07:42:28,481 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34
[2023-11-19 07:42:28,481 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34
[2023-11-19 07:42:28,482 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem22
[2023-11-19 07:42:28,482 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem22
[2023-11-19 07:42:28,485 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret23 could not be translated
[2023-11-19 07:42:28,486 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem26
[2023-11-19 07:42:28,486 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret27 could not be translated
[2023-11-19 07:42:28,486 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem26
[2023-11-19 07:42:28,487 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret35 could not be translated
[2023-11-19 07:42:28,487 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34
[2023-11-19 07:42:28,488 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated
[2023-11-19 07:42:28,488 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34
[2023-11-19 07:42:28,548 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml
[2023-11-19 07:42:28,548 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 07:42:28,549 INFO L158 Benchmark]: Toolchain (without parser) took 7712.97ms. Allocated memory was 125.8MB in the beginning and 207.6MB in the end (delta: 81.8MB). Free memory was 62.5MB in the beginning and 138.7MB in the end (delta: -76.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB.
[2023-11-19 07:42:28,549 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 125.8MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:42:28,549 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.55ms. Allocated memory was 125.8MB in the beginning and 172.0MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 136.2MB in the end (delta: -73.9MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB.
[2023-11-19 07:42:28,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.30ms. Allocated memory is still 172.0MB. Free memory was 136.2MB in the beginning and 134.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:42:28,550 INFO L158 Benchmark]: Boogie Preprocessor took 45.18ms. Allocated memory is still 172.0MB. Free memory was 134.2MB in the beginning and 132.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:42:28,550 INFO L158 Benchmark]: RCFGBuilder took 666.17ms. Allocated memory is still 172.0MB. Free memory was 132.1MB in the beginning and 109.7MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
[2023-11-19 07:42:28,551 INFO L158 Benchmark]: TraceAbstraction took 6521.87ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 109.0MB in the beginning and 143.9MB in the end (delta: -34.9MB). Peak memory consumption was 390.5kB. Max. memory is 16.1GB.
[2023-11-19 07:42:28,551 INFO L158 Benchmark]: Witness Printer took 86.70ms. Allocated memory is still 207.6MB. Free memory was 143.9MB in the beginning and 138.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-19 07:42:28,555 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.49ms. Allocated memory is still 125.8MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 334.55ms. Allocated memory was 125.8MB in the beginning and 172.0MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 136.2MB in the end (delta: -73.9MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 48.30ms. Allocated memory is still 172.0MB. Free memory was 136.2MB in the beginning and 134.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 45.18ms. Allocated memory is still 172.0MB. Free memory was 134.2MB in the beginning and 132.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 666.17ms. Allocated memory is still 172.0MB. Free memory was 132.1MB in the beginning and 109.7MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
* TraceAbstraction took 6521.87ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 109.0MB in the beginning and 143.9MB in the end (delta: -34.9MB). Peak memory consumption was 390.5kB. Max. memory is 16.1GB.
* Witness Printer took 86.70ms. Allocated memory is still 207.6MB. Free memory was 143.9MB in the beginning and 138.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~ret8
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~ret9
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~ret45
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem11
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem11
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem13
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem13
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem28
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem28
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem28
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem30
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem30
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem28
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret33 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~malloc34
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~malloc34
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem22
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem22
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret23 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem26
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret27 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem26
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~malloc34
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret35 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~malloc34
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated
- GenericResult: Unfinished Backtranslation
The program execution was not completely translated back.
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~ret8
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~ret9
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~ret45
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem11
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem11
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem13
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem13
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem28
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem28
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem30
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem28
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem30
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem28
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret33 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~malloc34
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~malloc34
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem22
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem22
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret23 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem26
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret27 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~mem26
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~ret35 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~malloc34
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: unknown boogie variable #t~malloc34
- GenericResult: Unfinished Backtranslation
The program execution was not completely translated back.
* 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: 16]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L110] CALL, EXPR nondet_tree()
[L25] COND FALSE !(__VERIFIER_nondet_bool())
[L28] struct node *n = (struct node *)malloc(sizeof(struct node));
[L29] n->data = __VERIFIER_nondet_int()
[L30] CALL, EXPR nondet_tree()
[L25] COND TRUE __VERIFIER_nondet_bool()
[L26] return 0;
VAL [\result={0:0}]
[L30] RET, EXPR nondet_tree()
VAL [n={-1:0}]
[L30] n->left = nondet_tree()
[L31] CALL, EXPR nondet_tree()
[L25] COND TRUE __VERIFIER_nondet_bool()
[L26] return 0;
VAL [\result={0:0}]
[L31] RET, EXPR nondet_tree()
VAL [n={-1:0}]
[L31] n->right = nondet_tree()
[L32] return n;
VAL [\result={-1:0}, n={-1:0}]
[L110] RET, EXPR nondet_tree()
[L110] CALL task(nondet_tree())
[L86] CALL, EXPR min(t)
VAL [n={-1:0}]
[L37] COND FALSE !(!n)
[L40] EXPR n->data
[L40] int a = n->data;
[L41] EXPR n->left
VAL [a=2147483647, n={-1:0}, n={-1:0}]
[L41] CALL, EXPR min(n->left)
VAL [n={0:0}]
[L37] COND TRUE !n
[L38] return 2147483647;
VAL [\result=2147483647, n={0:0}, n={0:0}]
[L41] RET, EXPR min(n->left)
VAL [a=2147483647, n={-1:0}, n={-1:0}]
[L41] int b = min(n->left);
[L42] EXPR n->right
VAL [a=2147483647, b=2147483647, n={-1:0}, n={-1:0}]
[L42] CALL, EXPR min(n->right)
VAL [n={0:0}]
[L37] COND TRUE !n
[L38] return 2147483647;
VAL [\result=2147483647, n={0:0}, n={0:0}]
[L42] RET, EXPR min(n->right)
VAL [a=2147483647, b=2147483647, n={-1:0}, n={-1:0}]
[L42] int c = min(n->right);
[L43] COND TRUE b <= a && b <= c
[L43] return b;
VAL [\result=2147483647, a=2147483647, b=2147483647, c=2147483647, n={-1:0}, n={-1:0}]
[L86] RET, EXPR min(t)
VAL [t={-1:0}, t={-1:0}]
[L86] int a = min(t);
[L87] int b;
VAL [a=2147483647, b={5:0}, t={-1:0}, t={-1:0}]
[L89] CALL, EXPR size(t)
VAL [t={-1:0}]
[L81] COND FALSE !(!t)
[L82] EXPR t->left
VAL [t={-1:0}, t={-1:0}]
[L82] CALL, EXPR size(t->left)
VAL [t={0:0}]
[L81] COND TRUE !t
[L81] return 0;
VAL [\result=0, t={0:0}, t={0:0}]
[L82] RET, EXPR size(t->left)
VAL [t={-1:0}, t={-1:0}]
[L82] EXPR t->right
VAL [t={-1:0}, t={-1:0}]
[L82] CALL, EXPR size(t->right)
VAL [t={0:0}]
[L81] COND TRUE !t
[L81] return 0;
VAL [\result=0, t={0:0}, t={0:0}]
[L82] RET, EXPR size(t->right)
VAL [t={-1:0}, t={-1:0}]
[L82] return size(t->left) + size(t->right) + 1;
[L89] RET, EXPR size(t)
VAL [a=2147483647, b={5:0}, t={-1:0}, t={-1:0}]
[L89] int n = size(t);
[L90] CALL assume_cycle_if_not(n != 0)
[L9] COND FALSE !(!cond)
VAL [\old(cond)=1, cond=1]
[L90] RET assume_cycle_if_not(n != 0)
[L91] EXPR, FCALL calloc(n, sizeof(int))
VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}]
[L91] int *x = calloc(n, sizeof(int));
VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}, x={-2:0}]
[L92] CALL tree_inorder(t, x, n)
VAL [\old(i)=1, a={-2:0}, t={-1:0}]
[L70] COND FALSE !(!t)
[L73] EXPR t->left
VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=1, t={-1:0}, t={-1:0}]
[L73] CALL, EXPR tree_inorder(t->left, a, i)
VAL [\old(i)=1, a={-2:0}, t={0:0}]
[L70] COND TRUE !t
[L71] return i;
VAL [\old(i)=1, \result=1, a={-2:0}, a={-2:0}, i=1, t={0:0}, t={0:0}]
[L73] RET, EXPR tree_inorder(t->left, a, i)
VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=1, t={-1:0}, t={-1:0}]
[L73] i = tree_inorder(t->left, a, i)
[L74] EXPR i++
[L74] EXPR t->data
[L74] a[i++] = t->data
[L75] EXPR t->right
VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}]
[L75] CALL, EXPR tree_inorder(t->right, a, i)
VAL [\old(i)=2, a={-2:0}, t={0:0}]
[L70] COND TRUE !t
[L71] return i;
VAL [\old(i)=2, \result=2, a={-2:0}, a={-2:0}, i=2, t={0:0}, t={0:0}]
[L75] RET, EXPR tree_inorder(t->right, a, i)
VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}]
[L75] i = tree_inorder(t->right, a, i)
[L76] return i;
VAL [\old(i)=1, \result=2, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}]
[L92] RET tree_inorder(t, x, n)
VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}, x={-2:0}]
[L93] EXPR x[0]
VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}, x={-2:0}]
[L93] CALL __VERIFIER_assert(a == x[0])
VAL [\old(cond)=0]
[L16] COND TRUE !cond
VAL [\old(cond)=0, cond=0]
[L16] reach_error()
VAL [\old(cond)=0, cond=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 7 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 392 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 378 mSDsluCounter, 1482 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1239 mSDsCounter, 225 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1554 IncrementalHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 225 mSolverCounterUnsat, 243 mSDtfsCounter, 1554 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=4, InterpolantAutomatonStates: 37, 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 459 ConstructedInterpolants, 0 QuantifiedInterpolants, 1316 SizeOfPredicates, 14 NumberOfNonLiveVariables, 634 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 156/168 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!
[2023-11-19 07:42:28,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfcac11-4322-4151-9467-3fa1f2897c8b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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