./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound5.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1 --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 a8eb1c4cff73de825c0246f8cf2782e4a89e8227445b840b0a85ffef021d29c3
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 15:32:36,627 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 15:32:36,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-12-02 15:32:36,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 15:32:36,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 15:32:36,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 15:32:36,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 15:32:36,708 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 15:32:36,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 15:32:36,708 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 15:32:36,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 15:32:36,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 15:32:36,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 15:32:36,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 15:32:36,709 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 15:32:36,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 15:32:36,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 15:32:36,710 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 15:32:36,711 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 15:32:36,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 15:32:36,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 15:32:36,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 15:32:36,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:32:36,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 15:32:36,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 15:32:36,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 15:32:36,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 15:32:36,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:32:36,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 15:32:36,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 15:32:36,712 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 15:32:36,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 15:32:36,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 15:32:36,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 15:32:36,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 15:32:36,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 15:32:36,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 15:32:36,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 15:32:36,713 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_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1
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 -> a8eb1c4cff73de825c0246f8cf2782e4a89e8227445b840b0a85ffef021d29c3
[2024-12-02 15:32:36,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 15:32:36,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 15:32:36,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 15:32:36,925 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 15:32:36,925 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 15:32:36,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound5.c
[2024-12-02 15:32:39,514 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/data/bc9061e0b/ce1c7761c1cb48f1bd62a73b8faa3c88/FLAGe6852844b
[2024-12-02 15:32:39,698 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 15:32:39,699 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound5.c
[2024-12-02 15:32:39,707 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/data/bc9061e0b/ce1c7761c1cb48f1bd62a73b8faa3c88/FLAGe6852844b
[2024-12-02 15:32:40,075 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/data/bc9061e0b/ce1c7761c1cb48f1bd62a73b8faa3c88
[2024-12-02 15:32:40,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 15:32:40,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 15:32:40,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 15:32:40,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 15:32:40,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 15:32:40,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddb925d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40, skipping insertion in model container
[2024-12-02 15:32:40,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,097 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 15:32:40,221 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_8da57779-9373-4496-9860-822cfbe53b35/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound5.c[524,537]
[2024-12-02 15:32:40,238 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 15:32:40,246 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 15:32:40,256 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_8da57779-9373-4496-9860-822cfbe53b35/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound5.c[524,537]
[2024-12-02 15:32:40,262 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 15:32:40,274 INFO L204 MainTranslator]: Completed translation
[2024-12-02 15:32:40,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40 WrapperNode
[2024-12-02 15:32:40,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 15:32:40,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 15:32:40,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 15:32:40,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 15:32:40,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,287 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,300 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46
[2024-12-02 15:32:40,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 15:32:40,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 15:32:40,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 15:32:40,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 15:32:40,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,318 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].
[2024-12-02 15:32:40,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,321 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,325 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 15:32:40,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 15:32:40,328 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 15:32:40,328 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 15:32:40,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (1/1) ...
[2024-12-02 15:32:40,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:32:40,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:32:40,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 15:32:40,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 15:32:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 15:32:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-12-02 15:32:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-12-02 15:32:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 15:32:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 15:32:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 15:32:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-12-02 15:32:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-12-02 15:32:40,441 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 15:32:40,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 15:32:40,535 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live.
[2024-12-02 15:32:40,535 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 15:32:40,543 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 15:32:40,543 INFO L312 CfgBuilder]: Removed 1 assume(true) statements.
[2024-12-02 15:32:40,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:40 BoogieIcfgContainer
[2024-12-02 15:32:40,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 15:32:40,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 15:32:40,545 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 15:32:40,548 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 15:32:40,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:32:40" (1/3) ...
[2024-12-02 15:32:40,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b0912e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:40, skipping insertion in model container
[2024-12-02 15:32:40,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:40" (2/3) ...
[2024-12-02 15:32:40,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b0912e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:40, skipping insertion in model container
[2024-12-02 15:32:40,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:40" (3/3) ...
[2024-12-02 15:32:40,550 INFO L128 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound5.c
[2024-12-02 15:32:40,561 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 15:32:40,562 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fermat2-ll_unwindbound5.c that has 3 procedures, 25 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-12-02 15:32:40,602 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 15:32:40,612 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;@f84ced9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 15:32:40,612 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 15:32:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 15:32:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-12-02 15:32:40,620 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:32:40,620 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:32:40,621 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 15:32:40,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:32:40,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times
[2024-12-02 15:32:40,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:32:40,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302094599]
[2024-12-02 15:32:40,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:32:40,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:32:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:32:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-12-02 15:32:40,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:32:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302094599]
[2024-12-02 15:32:40,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302094599] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:32:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255647433]
[2024-12-02 15:32:40,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:32:40,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:40,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:32:40,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:32:40,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 15:32:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:32:40,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-12-02 15:32:40,798 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:32:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-12-02 15:32:40,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:32:40,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255647433] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:32:40,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 15:32:40,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-12-02 15:32:40,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035935974]
[2024-12-02 15:32:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:32:40,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-12-02 15:32:40,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:32:40,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-12-02 15:32:40,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 15:32:40,825 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:32:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:32:40,837 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions.
[2024-12-02 15:32:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-12-02 15:32:40,839 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18
[2024-12-02 15:32:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:32:40,843 INFO L225 Difference]: With dead ends: 47
[2024-12-02 15:32:40,843 INFO L226 Difference]: Without dead ends: 21
[2024-12-02 15:32:40,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 15:32:40,847 INFO L435 NwaCegarLoop]: 29 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, 29 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
[2024-12-02 15:32:40,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:32:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2024-12-02 15:32:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2024-12-02 15:32:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 15:32:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions.
[2024-12-02 15:32:40,871 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18
[2024-12-02 15:32:40,871 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:32:40,871 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions.
[2024-12-02 15:32:40,871 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 15:32:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions.
[2024-12-02 15:32:40,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-12-02 15:32:40,872 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:32:40,873 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:32:40,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 15:32:41,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-12-02 15:32:41,073 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 15:32:41,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:32:41,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1316097620, now seen corresponding path program 1 times
[2024-12-02 15:32:41,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:32:41,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061262042]
[2024-12-02 15:32:41,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:32:41,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:32:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-12-02 15:32:41,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344271969]
[2024-12-02 15:32:41,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:32:41,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:41,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:32:41,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:32:41,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 15:32:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:32:41,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-12-02 15:32:41,168 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:32:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:32:41,372 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:32:41,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:32:41,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061262042]
[2024-12-02 15:32:41,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-12-02 15:32:41,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344271969]
[2024-12-02 15:32:41,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344271969] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:32:41,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:32:41,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 15:32:41,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207426103]
[2024-12-02 15:32:41,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:32:41,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:32:41,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:32:41,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:32:41,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:32:41,374 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 15:32:43,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-12-02 15:32:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:32:43,023 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions.
[2024-12-02 15:32:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 15:32:43,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19
[2024-12-02 15:32:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:32:43,024 INFO L225 Difference]: With dead ends: 33
[2024-12-02 15:32:43,024 INFO L226 Difference]: Without dead ends: 31
[2024-12-02 15:32:43,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-12-02 15:32:43,025 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2024-12-02 15:32:43,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2024-12-02 15:32:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2024-12-02 15:32:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30.
[2024-12-02 15:32:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 15:32:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions.
[2024-12-02 15:32:43,032 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 19
[2024-12-02 15:32:43,033 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:32:43,033 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions.
[2024-12-02 15:32:43,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 15:32:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions.
[2024-12-02 15:32:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-12-02 15:32:43,034 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:32:43,034 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:32:43,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 15:32:43,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:43,234 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 15:32:43,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:32:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1318004244, now seen corresponding path program 1 times
[2024-12-02 15:32:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:32:43,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606272862]
[2024-12-02 15:32:43,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:32:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:32:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:32:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:32:43,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:32:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606272862]
[2024-12-02 15:32:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606272862] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:32:43,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:32:43,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 15:32:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257930310]
[2024-12-02 15:32:43,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:32:43,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 15:32:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:32:43,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 15:32:43,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 15:32:43,317 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 15:32:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:32:43,333 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions.
[2024-12-02 15:32:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 15:32:43,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19
[2024-12-02 15:32:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:32:43,335 INFO L225 Difference]: With dead ends: 39
[2024-12-02 15:32:43,335 INFO L226 Difference]: Without dead ends: 32
[2024-12-02 15:32:43,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 15:32:43,336 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:32:43,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:32:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2024-12-02 15:32:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2024-12-02 15:32:43,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 15:32:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions.
[2024-12-02 15:32:43,344 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 19
[2024-12-02 15:32:43,344 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:32:43,344 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions.
[2024-12-02 15:32:43,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 15:32:43,344 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions.
[2024-12-02 15:32:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-12-02 15:32:43,345 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:32:43,345 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:32:43,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-12-02 15:32:43,345 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 15:32:43,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:32:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1691684484, now seen corresponding path program 1 times
[2024-12-02 15:32:43,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:32:43,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036218696]
[2024-12-02 15:32:43,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:32:43,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:32:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:32:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:32:43,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:32:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036218696]
[2024-12-02 15:32:43,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036218696] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:32:43,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529055376]
[2024-12-02 15:32:43,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:32:43,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:43,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:32:43,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:32:43,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 15:32:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:32:43,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 15:32:43,651 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:32:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:32:43,724 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:32:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:32:43,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529055376] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:32:43,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:32:43,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12
[2024-12-02 15:32:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376240757]
[2024-12-02 15:32:43,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:32:43,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-12-02 15:32:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:32:43,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-12-02 15:32:43,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2024-12-02 15:32:43,859 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5)
[2024-12-02 15:32:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:32:43,964 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions.
[2024-12-02 15:32:43,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 15:32:43,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 25
[2024-12-02 15:32:43,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:32:43,966 INFO L225 Difference]: With dead ends: 39
[2024-12-02 15:32:43,966 INFO L226 Difference]: Without dead ends: 34
[2024-12-02 15:32:43,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2024-12-02 15:32:43,967 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 15:32:43,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 122 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 15:32:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2024-12-02 15:32:43,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 25.
[2024-12-02 15:32:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 15:32:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions.
[2024-12-02 15:32:43,976 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 25
[2024-12-02 15:32:43,976 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:32:43,976 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions.
[2024-12-02 15:32:43,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5)
[2024-12-02 15:32:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions.
[2024-12-02 15:32:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-12-02 15:32:43,977 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:32:43,977 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:32:43,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-12-02 15:32:44,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:44,177 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 15:32:44,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:32:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash -145551231, now seen corresponding path program 1 times
[2024-12-02 15:32:44,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:32:44,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220834416]
[2024-12-02 15:32:44,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:32:44,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:32:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:32:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:32:44,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:32:44,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220834416]
[2024-12-02 15:32:44,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220834416] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:32:44,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986294426]
[2024-12-02 15:32:44,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:32:44,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:44,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:32:44,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:32:44,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 15:32:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:32:44,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 15:32:44,289 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:32:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:32:44,336 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:32:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:32:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986294426] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:32:44,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:32:44,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8
[2024-12-02 15:32:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686324105]
[2024-12-02 15:32:44,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:32:44,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-12-02 15:32:44,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:32:44,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-12-02 15:32:44,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2024-12-02 15:32:44,390 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9)
[2024-12-02 15:32:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:32:44,468 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions.
[2024-12-02 15:32:44,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-12-02 15:32:44,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 28
[2024-12-02 15:32:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:32:44,470 INFO L225 Difference]: With dead ends: 57
[2024-12-02 15:32:44,470 INFO L226 Difference]: Without dead ends: 52
[2024-12-02 15:32:44,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2024-12-02 15:32:44,471 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:32:44,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 92 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:32:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2024-12-02 15:32:44,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2024-12-02 15:32:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 15:32:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions.
[2024-12-02 15:32:44,484 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 28
[2024-12-02 15:32:44,484 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:32:44,484 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions.
[2024-12-02 15:32:44,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9)
[2024-12-02 15:32:44,484 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions.
[2024-12-02 15:32:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-12-02 15:32:44,485 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:32:44,485 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:32:44,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 15:32:44,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:44,686 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 15:32:44,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:32:44,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1700883628, now seen corresponding path program 2 times
[2024-12-02 15:32:44,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:32:44,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301978033]
[2024-12-02 15:32:44,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:32:44,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:32:44,706 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:32:44,706 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:32:44,873 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2024-12-02 15:32:44,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:32:44,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301978033]
[2024-12-02 15:32:44,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301978033] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:32:44,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999859457]
[2024-12-02 15:32:44,873 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:32:44,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:44,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:32:44,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:32:44,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 15:32:44,934 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:32:44,934 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:32:44,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-12-02 15:32:44,937 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:32:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-12-02 15:32:45,019 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:32:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2024-12-02 15:32:45,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999859457] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:32:45,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:32:45,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 9
[2024-12-02 15:32:45,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105671821]
[2024-12-02 15:32:45,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:32:45,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-12-02 15:32:45,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:32:45,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-12-02 15:32:45,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2024-12-02 15:32:45,129 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12)
[2024-12-02 15:32:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 15:32:45,223 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions.
[2024-12-02 15:32:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-12-02 15:32:45,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 55
[2024-12-02 15:32:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 15:32:45,225 INFO L225 Difference]: With dead ends: 66
[2024-12-02 15:32:45,225 INFO L226 Difference]: Without dead ends: 61
[2024-12-02 15:32:45,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 104 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132
[2024-12-02 15:32:45,226 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 15:32:45,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 96 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 15:32:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2024-12-02 15:32:45,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61.
[2024-12-02 15:32:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-12-02 15:32:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions.
[2024-12-02 15:32:45,241 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 55
[2024-12-02 15:32:45,241 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 15:32:45,241 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions.
[2024-12-02 15:32:45,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12)
[2024-12-02 15:32:45,241 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions.
[2024-12-02 15:32:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2024-12-02 15:32:45,242 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 15:32:45,242 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:32:45,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 15:32:45,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:45,443 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 15:32:45,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:32:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 598379329, now seen corresponding path program 3 times
[2024-12-02 15:32:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:32:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648794150]
[2024-12-02 15:32:45,443 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:32:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:32:45,480 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-12-02 15:32:45,480 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown
[2024-12-02 15:32:45,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471059218]
[2024-12-02 15:32:45,481 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:32:45,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:45,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:32:45,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:32:45,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 15:32:45,693 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-12-02 15:32:45,693 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat
[2024-12-02 15:32:45,694 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-12-02 15:32:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-12-02 15:32:45,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-12-02 15:32:45,754 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-12-02 15:32:45,755 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-12-02 15:32:45,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 15:32:45,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:32:45,959 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1]
[2024-12-02 15:32:45,985 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-12-02 15:32:45,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:32:45 BoogieIcfgContainer
[2024-12-02 15:32:45,987 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-12-02 15:32:45,988 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-12-02 15:32:45,988 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-12-02 15:32:45,988 INFO L274 PluginConnector]: Witness Printer initialized
[2024-12-02 15:32:45,989 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:40" (3/4) ...
[2024-12-02 15:32:45,989 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample
[2024-12-02 15:32:46,029 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 40.
[2024-12-02 15:32:46,082 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml
[2024-12-02 15:32:46,083 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/witness.yml
[2024-12-02 15:32:46,083 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-12-02 15:32:46,084 INFO L158 Benchmark]: Toolchain (without parser) took 6005.43ms. Allocated memory is still 142.6MB. Free memory was 118.9MB in the beginning and 54.5MB in the end (delta: 64.5MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB.
[2024-12-02 15:32:46,084 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:32:46,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.81ms. Allocated memory is still 142.6MB. Free memory was 118.9MB in the beginning and 107.5MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 15:32:46,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.92ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 106.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:32:46,085 INFO L158 Benchmark]: Boogie Preprocessor took 26.17ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 105.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:32:46,085 INFO L158 Benchmark]: RCFGBuilder took 215.40ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 94.5MB in the end (delta: 10.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-12-02 15:32:46,085 INFO L158 Benchmark]: TraceAbstraction took 5442.92ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 61.3MB in the end (delta: 32.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB.
[2024-12-02 15:32:46,085 INFO L158 Benchmark]: Witness Printer took 94.83ms. Allocated memory is still 142.6MB. Free memory was 61.3MB in the beginning and 54.5MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 15:32:46,087 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 195.81ms. Allocated memory is still 142.6MB. Free memory was 118.9MB in the beginning and 107.5MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 24.92ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 106.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 26.17ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 105.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 215.40ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 94.5MB in the end (delta: 10.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 5442.92ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 61.3MB in the end (delta: 32.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB.
* Witness Printer took 94.83ms. Allocated memory is still 142.6MB. Free memory was 61.3MB in the beginning and 54.5MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: 14]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L19] int counter = 0;
VAL [counter=0]
[L21] int A, R;
[L22] long long u, v, r;
[L23] A = __VERIFIER_nondet_int()
[L24] R = __VERIFIER_nondet_int()
[L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A)
VAL [\old(cond)=1, counter=0]
[L9] COND FALSE !(!cond)
VAL [\old(cond)=1, counter=0]
[L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A)
VAL [A=199, R=15, counter=0]
[L28] CALL assume_abort_if_not(A % 2 == 1)
VAL [\old(cond)=1, counter=0]
[L9] COND FALSE !(!cond)
VAL [\old(cond)=1, counter=0]
[L28] RET assume_abort_if_not(A % 2 == 1)
VAL [A=199, R=15, counter=0]
[L30] u = ((long long) 2 * R) + 1
[L31] v = 1
[L32] r = ((long long) R * R) - A
VAL [A=199, counter=0, r=26, u=31, v=1]
[L34] EXPR counter++
VAL [A=199, counter=1, r=26, u=31, v=1]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, counter=1]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, counter=1]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [A=199, counter=1, r=26, u=31, v=1]
[L36] COND FALSE !(!(r != 0))
VAL [A=199, counter=1, r=26, u=31, v=1]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [A=199, counter=1, r=25, u=31, v=3]
[L34] EXPR counter++
VAL [A=199, counter=2, r=25, u=31, v=3]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, counter=2]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, counter=2]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [A=199, counter=2, r=25, u=31, v=3]
[L36] COND FALSE !(!(r != 0))
VAL [A=199, counter=2, r=25, u=31, v=3]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [A=199, counter=2, r=22, u=31, v=5]
[L34] EXPR counter++
VAL [A=199, counter=3, r=22, u=31, v=5]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, counter=3]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, counter=3]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [A=199, counter=3, r=22, u=31, v=5]
[L36] COND FALSE !(!(r != 0))
VAL [A=199, counter=3, r=22, u=31, v=5]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [A=199, counter=3, r=17, u=31, v=7]
[L34] EXPR counter++
VAL [A=199, counter=4, r=17, u=31, v=7]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, counter=4]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, counter=4]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [A=199, counter=4, r=17, u=31, v=7]
[L36] COND FALSE !(!(r != 0))
VAL [A=199, counter=4, r=17, u=31, v=7]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [A=199, counter=4, r=10, u=31, v=9]
[L34] EXPR counter++
VAL [A=199, counter=5, r=10, u=31, v=9]
[L34] COND TRUE counter++<5
[L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=1, counter=5]
[L12] COND FALSE !(!(cond))
VAL [\old(cond)=1, counter=5]
[L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
VAL [A=199, counter=5, r=10, u=31, v=9]
[L36] COND FALSE !(!(r != 0))
VAL [A=199, counter=5, r=10, u=31, v=9]
[L38] COND TRUE r > 0
[L39] r = r - v
[L40] v = v + 2
VAL [A=199, counter=5, r=1, u=31, v=11]
[L34] EXPR counter++
VAL [A=199, counter=6, r=1, u=31, v=11]
[L34] COND FALSE !(counter++<5)
[L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v)
VAL [\old(cond)=0, counter=6]
[L12] COND TRUE !(cond)
VAL [\old(cond)=0, counter=6]
[L14] reach_error()
VAL [\old(cond)=0, counter=6]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 465 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 333 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 132 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 238 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=6, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 1008 SizeOfPredicates, 7 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 131/280 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
RESULT: Ultimate proved your program to be incorrect!
[2024-12-02 15:32:46,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da57779-9373-4496-9860-822cfbe53b35/bin/uautomizer-verify-84ZbGMXZE1/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
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE