./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC --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 fc77cb5fe4af5100e01bafbf150d5df54332b351a9f9d4040d6b54bbf20f5710
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 01:17:58,288 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 01:17:58,396 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-24 01:17:58,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 01:17:58,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 01:17:58,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 01:17:58,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 01:17:58,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 01:17:58,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 01:17:58,457 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 01:17:58,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 01:17:58,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 01:17:58,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 01:17:58,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 01:17:58,462 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 01:17:58,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 01:17:58,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-24 01:17:58,463 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-24 01:17:58,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-24 01:17:58,463 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-24 01:17:58,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 01:17:58,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 01:17:58,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 01:17:58,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 01:17:58,465 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-24 01:17:58,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-24 01:17:58,465 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 01:17:58,465 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 01:17:58,466 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 01:17:58,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:17:58,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:17:58,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:17:58,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:17:58,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 01:17:58,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:17:58,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:17:58,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:17:58,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:17:58,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 01:17:58,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 01:17:58,467 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-24 01:17:58,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 01:17:58,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-24 01:17:58,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 01:17:58,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 01:17:58,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 01:17:58,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 01:17:58,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 01:17:58,468 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC
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 -> fc77cb5fe4af5100e01bafbf150d5df54332b351a9f9d4040d6b54bbf20f5710
[2024-11-24 01:17:58,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 01:17:58,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 01:17:58,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 01:17:58,887 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 01:17:58,887 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 01:17:58,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c
[2024-11-24 01:18:02,735 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/data/03edf397d/114a0978a40445ea8c25858574b5bae4/FLAG8aaeacf81
[2024-11-24 01:18:03,036 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 01:18:03,037 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c
[2024-11-24 01:18:03,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/data/03edf397d/114a0978a40445ea8c25858574b5bae4/FLAG8aaeacf81
[2024-11-24 01:18:03,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/data/03edf397d/114a0978a40445ea8c25858574b5bae4
[2024-11-24 01:18:03,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 01:18:03,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 01:18:03,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 01:18:03,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 01:18:03,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 01:18:03,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03, skipping insertion in model container
[2024-11-24 01:18:03,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,347 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 01:18:03,586 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c[576,589]
[2024-11-24 01:18:03,619 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:18:03,636 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 01:18:03,651 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c[576,589]
[2024-11-24 01:18:03,668 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:18:03,690 INFO L204 MainTranslator]: Completed translation
[2024-11-24 01:18:03,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03 WrapperNode
[2024-11-24 01:18:03,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 01:18:03,693 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 01:18:03,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 01:18:03,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 01:18:03,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,731 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55
[2024-11-24 01:18:03,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 01:18:03,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 01:18:03,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 01:18:03,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 01:18:03,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,759 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-24 01:18:03,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,763 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 01:18:03,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 01:18:03,774 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 01:18:03,774 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 01:18:03,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (1/1) ...
[2024-11-24 01:18:03,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:18:03,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:03,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 01:18:03,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 01:18:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 01:18:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-24 01:18:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-24 01:18:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 01:18:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 01:18:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 01:18:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-24 01:18:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-24 01:18:03,949 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 01:18:03,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 01:18:04,223 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live.
[2024-11-24 01:18:04,224 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 01:18:04,242 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 01:18:04,242 INFO L312 CfgBuilder]: Removed 4 assume(true) statements.
[2024-11-24 01:18:04,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:04 BoogieIcfgContainer
[2024-11-24 01:18:04,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 01:18:04,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 01:18:04,248 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 01:18:04,256 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 01:18:04,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:18:03" (1/3) ...
[2024-11-24 01:18:04,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a417203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:04, skipping insertion in model container
[2024-11-24 01:18:04,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:03" (2/3) ...
[2024-11-24 01:18:04,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a417203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:04, skipping insertion in model container
[2024-11-24 01:18:04,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:04" (3/3) ...
[2024-11-24 01:18:04,262 INFO L128 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound5.c
[2024-11-24 01:18:04,283 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 01:18:04,288 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cohendiv-ll_valuebound5.c that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 1 error locations.
[2024-11-24 01:18:04,381 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 01:18:04,397 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ac7b64d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 01:18:04,397 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-24 01:18:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-24 01:18:04,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-24 01:18:04,411 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:04,412 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:18:04,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:04,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1333923269, now seen corresponding path program 1 times
[2024-11-24 01:18:04,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:04,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446843418]
[2024-11-24 01:18:04,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:04,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-24 01:18:04,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446843418]
[2024-11-24 01:18:04,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446843418] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:18:04,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051600665]
[2024-11-24 01:18:04,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:04,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:04,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:04,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:04,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-24 01:18:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:04,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:04,762 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-24 01:18:04,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 01:18:04,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051600665] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:18:04,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 01:18:04,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-24 01:18:04,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79144530]
[2024-11-24 01:18:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:18:04,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-24 01:18:04,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:04,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-24 01:18:04,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-24 01:18:04,823 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-24 01:18:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:04,851 INFO L93 Difference]: Finished difference Result 61 states and 100 transitions.
[2024-11-24 01:18:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-24 01:18:04,853 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23
[2024-11-24 01:18:04,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:04,863 INFO L225 Difference]: With dead ends: 61
[2024-11-24 01:18:04,863 INFO L226 Difference]: Without dead ends: 28
[2024-11-24 01:18:04,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-24 01:18:04,871 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:04,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-24 01:18:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2024-11-24 01:18:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2024-11-24 01:18:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-24 01:18:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions.
[2024-11-24 01:18:04,920 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 23
[2024-11-24 01:18:04,921 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:04,921 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions.
[2024-11-24 01:18:04,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-24 01:18:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions.
[2024-11-24 01:18:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-24 01:18:04,923 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:04,923 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:18:04,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-24 01:18:05,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-11-24 01:18:05,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:05,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:05,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1751173113, now seen corresponding path program 1 times
[2024-11-24 01:18:05,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:05,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266282394]
[2024-11-24 01:18:05,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:05,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-24 01:18:05,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788950882]
[2024-11-24 01:18:05,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:05,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:05,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:05,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:05,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-24 01:18:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:05,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:05,284 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-24 01:18:05,414 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 01:18:05,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:05,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266282394]
[2024-11-24 01:18:05,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 01:18:05,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788950882]
[2024-11-24 01:18:05,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788950882] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:18:05,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:18:05,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-24 01:18:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935345961]
[2024-11-24 01:18:05,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:18:05,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 01:18:05,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:05,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 01:18:05,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-24 01:18:05,419 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-24 01:18:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:05,524 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions.
[2024-11-24 01:18:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 01:18:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23
[2024-11-24 01:18:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:05,527 INFO L225 Difference]: With dead ends: 38
[2024-11-24 01:18:05,527 INFO L226 Difference]: Without dead ends: 36
[2024-11-24 01:18:05,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-24 01:18:05,528 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:05,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 01:18:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-11-24 01:18:05,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33.
[2024-11-24 01:18:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-24 01:18:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions.
[2024-11-24 01:18:05,541 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 23
[2024-11-24 01:18:05,541 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:05,541 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions.
[2024-11-24 01:18:05,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-24 01:18:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions.
[2024-11-24 01:18:05,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-11-24 01:18:05,543 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:05,543 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:18:05,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-24 01:18:05,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2024-11-24 01:18:05,747 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:05,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash 77308727, now seen corresponding path program 1 times
[2024-11-24 01:18:05,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:05,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519222953]
[2024-11-24 01:18:05,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:05,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-24 01:18:05,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477514428]
[2024-11-24 01:18:05,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:05,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:05,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:05,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:05,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-24 01:18:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:05,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:05,890 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-24 01:18:05,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 01:18:05,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:05,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519222953]
[2024-11-24 01:18:05,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 01:18:05,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477514428]
[2024-11-24 01:18:05,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477514428] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:18:05,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:18:05,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-24 01:18:05,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142959199]
[2024-11-24 01:18:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:18:05,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 01:18:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:05,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 01:18:05,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-24 01:18:05,970 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-24 01:18:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:06,127 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions.
[2024-11-24 01:18:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 01:18:06,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28
[2024-11-24 01:18:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:06,132 INFO L225 Difference]: With dead ends: 49
[2024-11-24 01:18:06,132 INFO L226 Difference]: Without dead ends: 46
[2024-11-24 01:18:06,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-24 01:18:06,136 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:06,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 112 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 01:18:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2024-11-24 01:18:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45.
[2024-11-24 01:18:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-24 01:18:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions.
[2024-11-24 01:18:06,163 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 28
[2024-11-24 01:18:06,163 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:06,163 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions.
[2024-11-24 01:18:06,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-24 01:18:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions.
[2024-11-24 01:18:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2024-11-24 01:18:06,167 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:06,167 INFO L218 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]
[2024-11-24 01:18:06,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-24 01:18:06,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2024-11-24 01:18:06,372 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:06,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:06,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1963321705, now seen corresponding path program 1 times
[2024-11-24 01:18:06,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:06,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479009653]
[2024-11-24 01:18:06,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:06,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-24 01:18:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111245939]
[2024-11-24 01:18:06,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:06,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:06,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:06,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:06,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-24 01:18:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:06,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:06,509 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-24 01:18:06,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 01:18:06,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479009653]
[2024-11-24 01:18:06,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 01:18:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111245939]
[2024-11-24 01:18:06,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111245939] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:18:06,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:18:06,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-24 01:18:06,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83401021]
[2024-11-24 01:18:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:18:06,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 01:18:06,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:06,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 01:18:06,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-24 01:18:06,565 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2024-11-24 01:18:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:06,685 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions.
[2024-11-24 01:18:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 01:18:06,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34
[2024-11-24 01:18:06,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:06,688 INFO L225 Difference]: With dead ends: 68
[2024-11-24 01:18:06,688 INFO L226 Difference]: Without dead ends: 66
[2024-11-24 01:18:06,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-24 01:18:06,690 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:06,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 122 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 01:18:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2024-11-24 01:18:06,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59.
[2024-11-24 01:18:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22)
[2024-11-24 01:18:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions.
[2024-11-24 01:18:06,709 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 34
[2024-11-24 01:18:06,710 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:06,710 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions.
[2024-11-24 01:18:06,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2024-11-24 01:18:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions.
[2024-11-24 01:18:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-24 01:18:06,712 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:06,712 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:18:06,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-24 01:18:06,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:06,913 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:06,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:06,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1428905129, now seen corresponding path program 1 times
[2024-11-24 01:18:06,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:06,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100693375]
[2024-11-24 01:18:06,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:06,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2024-11-24 01:18:07,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:07,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100693375]
[2024-11-24 01:18:07,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100693375] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:18:07,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331851669]
[2024-11-24 01:18:07,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:07,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:07,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:07,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:07,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-24 01:18:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:07,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:07,614 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2024-11-24 01:18:07,756 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:18:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2024-11-24 01:18:07,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331851669] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:18:07,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:18:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13
[2024-11-24 01:18:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234454930]
[2024-11-24 01:18:07,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:18:08,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-24 01:18:08,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:08,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-24 01:18:08,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156
[2024-11-24 01:18:08,001 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14)
[2024-11-24 01:18:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:08,238 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions.
[2024-11-24 01:18:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-24 01:18:08,240 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 44
[2024-11-24 01:18:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:08,245 INFO L225 Difference]: With dead ends: 67
[2024-11-24 01:18:08,245 INFO L226 Difference]: Without dead ends: 65
[2024-11-24 01:18:08,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182
[2024-11-24 01:18:08,247 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:08,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 207 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-24 01:18:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-11-24 01:18:08,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63.
[2024-11-24 01:18:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22)
[2024-11-24 01:18:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions.
[2024-11-24 01:18:08,281 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 44
[2024-11-24 01:18:08,281 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:08,281 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions.
[2024-11-24 01:18:08,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14)
[2024-11-24 01:18:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions.
[2024-11-24 01:18:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-24 01:18:08,288 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:08,290 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:18:08,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-24 01:18:08,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:08,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:08,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash -657552545, now seen corresponding path program 1 times
[2024-11-24 01:18:08,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:08,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431499364]
[2024-11-24 01:18:08,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2024-11-24 01:18:08,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:08,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431499364]
[2024-11-24 01:18:08,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431499364] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:18:08,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786209766]
[2024-11-24 01:18:08,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:08,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:08,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:08,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:08,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-24 01:18:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:08,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:08,851 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2024-11-24 01:18:08,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 01:18:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786209766] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:18:08,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 01:18:08,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-11-24 01:18:08,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109763830]
[2024-11-24 01:18:08,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:18:08,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 01:18:08,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:08,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 01:18:08,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2024-11-24 01:18:08,999 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)
[2024-11-24 01:18:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:09,154 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions.
[2024-11-24 01:18:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:18:09,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50
[2024-11-24 01:18:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:09,157 INFO L225 Difference]: With dead ends: 76
[2024-11-24 01:18:09,159 INFO L226 Difference]: Without dead ends: 74
[2024-11-24 01:18:09,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2024-11-24 01:18:09,163 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:09,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 153 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 01:18:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2024-11-24 01:18:09,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69.
[2024-11-24 01:18:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 40 states have internal predecessors, (42), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24)
[2024-11-24 01:18:09,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions.
[2024-11-24 01:18:09,200 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 50
[2024-11-24 01:18:09,200 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:09,200 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions.
[2024-11-24 01:18:09,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)
[2024-11-24 01:18:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions.
[2024-11-24 01:18:09,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2024-11-24 01:18:09,203 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:09,204 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 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]
[2024-11-24 01:18:09,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-24 01:18:09,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:09,409 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:09,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:09,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1060988137, now seen corresponding path program 1 times
[2024-11-24 01:18:09,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:09,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995560392]
[2024-11-24 01:18:09,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-24 01:18:09,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998834302]
[2024-11-24 01:18:09,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:09,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:09,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:09,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:09,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-24 01:18:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:09,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:09,528 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2024-11-24 01:18:10,005 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:18:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked.
[2024-11-24 01:18:10,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:10,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995560392]
[2024-11-24 01:18:10,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-24 01:18:10,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998834302]
[2024-11-24 01:18:10,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998834302] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:18:10,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 01:18:10,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17
[2024-11-24 01:18:10,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007382394]
[2024-11-24 01:18:10,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:18:10,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-24 01:18:10,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:10,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-24 01:18:10,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272
[2024-11-24 01:18:10,389 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9)
[2024-11-24 01:18:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:10,628 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions.
[2024-11-24 01:18:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 01:18:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56
[2024-11-24 01:18:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:10,631 INFO L225 Difference]: With dead ends: 75
[2024-11-24 01:18:10,631 INFO L226 Difference]: Without dead ends: 72
[2024-11-24 01:18:10,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342
[2024-11-24 01:18:10,633 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:10,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 108 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-24 01:18:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2024-11-24 01:18:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72.
[2024-11-24 01:18:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24)
[2024-11-24 01:18:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions.
[2024-11-24 01:18:10,662 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 56
[2024-11-24 01:18:10,663 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:10,663 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions.
[2024-11-24 01:18:10,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9)
[2024-11-24 01:18:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions.
[2024-11-24 01:18:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2024-11-24 01:18:10,665 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:10,666 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:18:10,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-11-24 01:18:10,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:10,871 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:10,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:10,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2133234825, now seen corresponding path program 2 times
[2024-11-24 01:18:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:10,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346587164]
[2024-11-24 01:18:10,872 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:18:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:10,904 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:18:10,908 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:18:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked.
[2024-11-24 01:18:11,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:11,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346587164]
[2024-11-24 01:18:11,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346587164] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:18:11,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105439299]
[2024-11-24 01:18:11,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:18:11,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:11,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:11,392 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:11,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-24 01:18:11,475 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:18:11,475 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:18:11,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:11,479 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked.
[2024-11-24 01:18:11,601 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 01:18:11,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105439299] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:18:11,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 01:18:11,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13
[2024-11-24 01:18:11,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044045745]
[2024-11-24 01:18:11,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:18:11,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 01:18:11,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:11,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 01:18:11,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156
[2024-11-24 01:18:11,604 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12)
[2024-11-24 01:18:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:11,732 INFO L93 Difference]: Finished difference Result 111 states and 141 transitions.
[2024-11-24 01:18:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 01:18:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 72
[2024-11-24 01:18:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:11,737 INFO L225 Difference]: With dead ends: 111
[2024-11-24 01:18:11,740 INFO L226 Difference]: Without dead ends: 72
[2024-11-24 01:18:11,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182
[2024-11-24 01:18:11,742 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:11,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 89 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 01:18:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2024-11-24 01:18:11,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70.
[2024-11-24 01:18:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 40 states have internal predecessors, (41), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-24 01:18:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions.
[2024-11-24 01:18:11,796 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 72
[2024-11-24 01:18:11,796 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:11,796 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions.
[2024-11-24 01:18:11,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12)
[2024-11-24 01:18:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions.
[2024-11-24 01:18:11,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2024-11-24 01:18:11,800 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:11,800 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:18:11,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-24 01:18:12,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:12,001 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:12,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:12,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1024621969, now seen corresponding path program 1 times
[2024-11-24 01:18:12,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:12,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311849601]
[2024-11-24 01:18:12,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:12,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked.
[2024-11-24 01:18:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311849601]
[2024-11-24 01:18:12,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311849601] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:18:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335453649]
[2024-11-24 01:18:12,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:12,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:12,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:12,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:12,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-24 01:18:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:12,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:12,375 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked.
[2024-11-24 01:18:12,464 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:18:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked.
[2024-11-24 01:18:12,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335453649] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:18:12,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:18:12,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11
[2024-11-24 01:18:12,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564486785]
[2024-11-24 01:18:12,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:18:12,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-24 01:18:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:12,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-24 01:18:12,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2024-11-24 01:18:12,664 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15)
[2024-11-24 01:18:12,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:12,858 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions.
[2024-11-24 01:18:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-24 01:18:12,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 72
[2024-11-24 01:18:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:12,861 INFO L225 Difference]: With dead ends: 80
[2024-11-24 01:18:12,861 INFO L226 Difference]: Without dead ends: 78
[2024-11-24 01:18:12,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156
[2024-11-24 01:18:12,862 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:12,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 126 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 01:18:12,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2024-11-24 01:18:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72.
[2024-11-24 01:18:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2024-11-24 01:18:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions.
[2024-11-24 01:18:12,901 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 72
[2024-11-24 01:18:12,902 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:12,902 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions.
[2024-11-24 01:18:12,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15)
[2024-11-24 01:18:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions.
[2024-11-24 01:18:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2024-11-24 01:18:12,908 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 01:18:12,908 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:18:12,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-24 01:18:13,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:13,109 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 01:18:13,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:18:13,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1605956923, now seen corresponding path program 1 times
[2024-11-24 01:18:13,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:18:13,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104256244]
[2024-11-24 01:18:13,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:13,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:18:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2024-11-24 01:18:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:18:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104256244]
[2024-11-24 01:18:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104256244] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:18:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840979493]
[2024-11-24 01:18:13,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:18:13,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:18:13,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:18:13,426 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:18:13,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-24 01:18:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:18:13,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-24 01:18:13,511 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:18:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2024-11-24 01:18:13,733 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:18:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2024-11-24 01:18:14,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840979493] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:18:14,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:18:14,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19
[2024-11-24 01:18:14,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046290416]
[2024-11-24 01:18:14,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:18:14,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-11-24 01:18:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:18:14,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-11-24 01:18:14,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342
[2024-11-24 01:18:14,139 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36)
[2024-11-24 01:18:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 01:18:15,357 INFO L93 Difference]: Finished difference Result 135 states and 174 transitions.
[2024-11-24 01:18:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2024-11-24 01:18:15,358 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 94
[2024-11-24 01:18:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 01:18:15,359 INFO L225 Difference]: With dead ends: 135
[2024-11-24 01:18:15,359 INFO L226 Difference]: Without dead ends: 0
[2024-11-24 01:18:15,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332
[2024-11-24 01:18:15,362 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 44 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-24 01:18:15,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 392 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-24 01:18:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-24 01:18:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-24 01:18:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:18:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-24 01:18:15,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94
[2024-11-24 01:18:15,368 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-24 01:18:15,368 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-24 01:18:15,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36)
[2024-11-24 01:18:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-24 01:18:15,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-24 01:18:15,373 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-24 01:18:15,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-24 01:18:15,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-24 01:18:15,581 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:18:15,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-24 01:18:17,382 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-24 01:18:17,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:18:17 BoogieIcfgContainer
[2024-11-24 01:18:17,407 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-24 01:18:17,408 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-24 01:18:17,408 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-24 01:18:17,408 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-24 01:18:17,409 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:04" (3/4) ...
[2024-11-24 01:18:17,412 INFO L146 WitnessPrinter]: Generating witness for correct program
[2024-11-24 01:18:17,419 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not
[2024-11-24 01:18:17,419 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2024-11-24 01:18:17,425 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges
[2024-11-24 01:18:17,425 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-24 01:18:17,425 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-24 01:18:17,426 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-24 01:18:17,530 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/witness.graphml
[2024-11-24 01:18:17,530 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/witness.yml
[2024-11-24 01:18:17,530 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-24 01:18:17,532 INFO L158 Benchmark]: Toolchain (without parser) took 14212.22ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 58.4MB in the end (delta: 34.2MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB.
[2024-11-24 01:18:17,533 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 73.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:18:17,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.06ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.4MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:18:17,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.58ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:18:17,536 INFO L158 Benchmark]: Boogie Preprocessor took 40.70ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 79.0MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:18:17,536 INFO L158 Benchmark]: RCFGBuilder took 471.12ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 68.5MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:18:17,536 INFO L158 Benchmark]: TraceAbstraction took 13159.41ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 63.3MB in the end (delta: 4.4MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB.
[2024-11-24 01:18:17,538 INFO L158 Benchmark]: Witness Printer took 122.50ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 58.4MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:18:17,540 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 73.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 371.06ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.4MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 38.58ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 40.70ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 79.0MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 471.12ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 68.5MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 13159.41ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 63.3MB in the end (delta: 4.4MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB.
* Witness Printer took 122.50ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 58.4MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 17]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.2s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 1473 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1134 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 712 IncrementalHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 339 mSDtfsCounter, 712 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 829 GetRequests, 709 SyntacticMatches, 10 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 992 NumberOfCodeBlocks, 992 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1097 ConstructedInterpolants, 0 QuantifiedInterpolants, 2203 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1203 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 2394/2484 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, ConComCheckerStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 47]: Loop Invariant
Derived loop invariant: (((((((x <= 5) && ((((__int128) a * y) + r) == ((__int128) b + x))) && (0 <= r)) && (r == x)) && (q == 0)) && (b < ((long long) y + 1))) || (((((((x <= 5) && (0 <= x)) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (b <= ((__int128) r + y))) && (0 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))))
- InvariantResult [Line: 38]: Loop Invariant
Derived loop invariant: ((((((((x <= 5) && (b == 0)) && (0 <= r)) && (r == x)) && (q == 0)) && (a == 0)) || ((((((((__int128) r + 1) <= y) && (x <= 5)) && (0 <= x)) && (b == y)) && (a == 1)) && ((((__int128) r + y) + ((__int128) q * y)) == ((__int128) b + x)))) || ((((((x <= 5) && (0 <= x)) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (0 <= ((__int128) r + y))) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))))
RESULT: Ultimate proved your program to be correct!
[2024-11-24 01:18:17,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c022b3c-e0aa-4499-8602-571d5f83e5aa/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE