./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 17:20:41,265 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 17:20:41,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 17:20:41,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 17:20:41,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 17:20:41,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 17:20:41,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 17:20:41,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 17:20:41,382 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 17:20:41,382 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 17:20:41,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 17:20:41,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 17:20:41,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 17:20:41,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 17:20:41,385 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 17:20:41,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 17:20:41,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 17:20:41,386 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 17:20:41,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 17:20:41,387 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 17:20:41,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 17:20:41,391 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 17:20:41,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 17:20:41,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 17:20:41,392 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 17:20:41,392 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 17:20:41,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 17:20:41,393 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 17:20:41,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 17:20:41,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 17:20:41,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 17:20:41,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 17:20:41,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:20:41,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 17:20:41,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 17:20:41,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 17:20:41,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 17:20:41,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 17:20:41,418 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 17:20:41,418 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 17:20:41,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 17:20:41,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 17:20:41,419 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856
[2024-11-08 17:20:41,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 17:20:41,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 17:20:41,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 17:20:41,750 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 17:20:41,751 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 17:20:41,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c
Unable to find full path for "g++"
[2024-11-08 17:20:43,759 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 17:20:44,015 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 17:20:44,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c
[2024-11-08 17:20:44,026 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/data/544d213e1/314178f21a964e3f881f4e18e42369cb/FLAG70e01a542
[2024-11-08 17:20:44,333 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/data/544d213e1/314178f21a964e3f881f4e18e42369cb
[2024-11-08 17:20:44,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 17:20:44,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 17:20:44,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 17:20:44,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 17:20:44,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 17:20:44,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2520af60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44, skipping insertion in model container
[2024-11-08 17:20:44,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,399 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 17:20:44,619 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_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008]
[2024-11-08 17:20:44,625 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_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402]
[2024-11-08 17:20:44,695 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:20:44,706 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 17:20:44,720 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_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008]
[2024-11-08 17:20:44,722 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_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402]
[2024-11-08 17:20:44,757 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:20:44,778 INFO L204 MainTranslator]: Completed translation
[2024-11-08 17:20:44,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44 WrapperNode
[2024-11-08 17:20:44,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 17:20:44,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 17:20:44,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 17:20:44,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 17:20:44,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,822 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211
[2024-11-08 17:20:44,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 17:20:44,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 17:20:44,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 17:20:44,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 17:20:44,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,874 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-08 17:20:44,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 17:20:44,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 17:20:44,922 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 17:20:44,922 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 17:20:44,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (1/1) ...
[2024-11-08 17:20:44,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:20:44,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:20:44,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 17:20:44,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 17:20:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 17:20:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt
[2024-11-08 17:20:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt
[2024-11-08 17:20:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 17:20:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 17:20:45,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 17:20:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-08 17:20:45,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-08 17:20:45,100 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 17:20:45,105 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 17:20:45,585 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live.
[2024-11-08 17:20:45,585 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 17:20:45,603 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 17:20:45,603 INFO L316 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-08 17:20:45,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:20:45 BoogieIcfgContainer
[2024-11-08 17:20:45,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 17:20:45,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 17:20:45,607 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 17:20:45,610 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 17:20:45,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:20:44" (1/3) ...
[2024-11-08 17:20:45,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bdd1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:20:45, skipping insertion in model container
[2024-11-08 17:20:45,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:44" (2/3) ...
[2024-11-08 17:20:45,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bdd1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:20:45, skipping insertion in model container
[2024-11-08 17:20:45,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:20:45" (3/3) ...
[2024-11-08 17:20:45,613 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-2a.c.cil.c
[2024-11-08 17:20:45,630 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 17:20:45,630 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2024-11-08 17:20:45,700 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 17:20:45,705 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;@69daf7c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 17:20:45,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-11-08 17:20:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 92 states have (on average 1.576086956521739) internal successors, (145), 96 states have internal predecessors, (145), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-08 17:20:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-08 17:20:45,717 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:20:45,717 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:20:45,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:20:45,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:20:45,724 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times
[2024-11-08 17:20:45,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:20:45,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788576368]
[2024-11-08 17:20:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:20:45,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:20:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 17:20:45,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-08 17:20:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 17:20:45,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-08 17:20:45,919 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-08 17:20:45,921 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining)
[2024-11-08 17:20:45,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2024-11-08 17:20:45,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 17:20:45,929 INFO L407 BasicCegarLoop]: Path program histogram: [1]
[2024-11-08 17:20:45,945 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-08 17:20:45,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 05:20:45 BoogieIcfgContainer
[2024-11-08 17:20:45,953 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-08 17:20:45,954 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-08 17:20:45,954 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-08 17:20:45,954 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-08 17:20:45,955 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:20:45" (3/4) ...
[2024-11-08 17:20:45,959 INFO L145 WitnessPrinter]: No result that supports witness generation found
[2024-11-08 17:20:45,960 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-08 17:20:45,962 INFO L158 Benchmark]: Toolchain (without parser) took 1622.73ms. Allocated memory was 140.5MB in the beginning and 209.7MB in the end (delta: 69.2MB). Free memory was 106.1MB in the beginning and 176.6MB in the end (delta: -70.5MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB.
[2024-11-08 17:20:45,963 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 140.5MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 17:20:45,965 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.31ms. Allocated memory is still 140.5MB. Free memory was 105.7MB in the beginning and 88.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-08 17:20:45,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.13ms. Allocated memory is still 140.5MB. Free memory was 88.9MB in the beginning and 86.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 17:20:45,968 INFO L158 Benchmark]: Boogie Preprocessor took 94.79ms. Allocated memory is still 140.5MB. Free memory was 86.3MB in the beginning and 83.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 17:20:45,968 INFO L158 Benchmark]: RCFGBuilder took 685.06ms. Allocated memory is still 140.5MB. Free memory was 83.8MB in the beginning and 58.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
[2024-11-08 17:20:45,973 INFO L158 Benchmark]: TraceAbstraction took 346.61ms. Allocated memory was 140.5MB in the beginning and 209.7MB in the end (delta: 69.2MB). Free memory was 57.9MB in the beginning and 177.7MB in the end (delta: -119.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 17:20:45,974 INFO L158 Benchmark]: Witness Printer took 7.53ms. Allocated memory is still 209.7MB. Free memory was 177.7MB in the beginning and 176.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 17:20:45,977 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25ms. Allocated memory is still 140.5MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 437.31ms. Allocated memory is still 140.5MB. Free memory was 105.7MB in the beginning and 88.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 44.13ms. Allocated memory is still 140.5MB. Free memory was 88.9MB in the beginning and 86.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 94.79ms. Allocated memory is still 140.5MB. Free memory was 86.3MB in the beginning and 83.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 685.06ms. Allocated memory is still 140.5MB. Free memory was 83.8MB in the beginning and 58.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
* TraceAbstraction took 346.61ms. Allocated memory was 140.5MB in the beginning and 209.7MB in the end (delta: 69.2MB). Free memory was 57.9MB in the beginning and 177.7MB in the end (delta: -119.8MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 7.53ms. Allocated memory is still 209.7MB. Free memory was 177.7MB in the beginning and 176.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45.
Possible FailurePath:
[L403] COND TRUE __VERIFIER_nondet_int()
[L404] CALL main1()
[L39] float IN = __VERIFIER_nondet_float();
[L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f)
[L34] COND FALSE !(!cond)
[L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f)
[L42] float x = IN;
[L44-L45] float result =
1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x;
[L47] COND TRUE !(result >= 0.0f && result < 1.4f)
[L48] reach_error()
- UnprovableResult [Line: 61]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 105 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-11-08 17:20:46,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 17:20:48,354 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 17:20:48,457 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-08 17:20:48,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 17:20:48,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 17:20:48,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 17:20:48,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 17:20:48,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 17:20:48,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 17:20:48,511 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 17:20:48,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 17:20:48,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 17:20:48,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 17:20:48,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 17:20:48,515 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 17:20:48,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 17:20:48,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 17:20:48,516 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 17:20:48,516 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 17:20:48,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 17:20:48,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 17:20:48,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 17:20:48,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 17:20:48,521 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 17:20:48,522 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-08 17:20:48,522 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 17:20:48,522 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-08 17:20:48,522 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 17:20:48,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 17:20:48,523 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 17:20:48,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 17:20:48,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 17:20:48,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 17:20:48,524 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 17:20:48,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:20:48,527 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 17:20:48,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 17:20:48,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 17:20:48,528 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-08 17:20:48,528 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-08 17:20:48,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 17:20:48,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 17:20:48,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 17:20:48,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 17:20:48,530 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856
[2024-11-08 17:20:48,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 17:20:48,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 17:20:48,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 17:20:48,927 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 17:20:48,928 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 17:20:48,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c
Unable to find full path for "g++"
[2024-11-08 17:20:50,971 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 17:20:51,213 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 17:20:51,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c
[2024-11-08 17:20:51,225 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/data/aa80b8423/9ca2ac273dcb4cf488f5e700473be9d9/FLAG7e64eb922
[2024-11-08 17:20:51,561 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/data/aa80b8423/9ca2ac273dcb4cf488f5e700473be9d9
[2024-11-08 17:20:51,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 17:20:51,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 17:20:51,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 17:20:51,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 17:20:51,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 17:20:51,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:20:51" (1/1) ...
[2024-11-08 17:20:51,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642a3201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:51, skipping insertion in model container
[2024-11-08 17:20:51,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:20:51" (1/1) ...
[2024-11-08 17:20:51,611 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 17:20:51,839 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_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008]
[2024-11-08 17:20:51,849 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_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402]
[2024-11-08 17:20:51,938 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:20:51,951 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 17:20:51,966 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_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[1995,2008]
[2024-11-08 17:20:51,968 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_c2f68b91-d5a9-4920-ab97-01de239a3bee/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c[2389,2402]
[2024-11-08 17:20:52,022 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:20:52,053 INFO L204 MainTranslator]: Completed translation
[2024-11-08 17:20:52,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52 WrapperNode
[2024-11-08 17:20:52,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 17:20:52,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 17:20:52,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 17:20:52,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 17:20:52,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,123 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168
[2024-11-08 17:20:52,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 17:20:52,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 17:20:52,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 17:20:52,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 17:20:52,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,164 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,191 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-08 17:20:52,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,206 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,214 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 17:20:52,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 17:20:52,233 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 17:20:52,234 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 17:20:52,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (1/1) ...
[2024-11-08 17:20:52,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:20:52,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:20:52,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 17:20:52,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 17:20:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 17:20:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-08 17:20:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt
[2024-11-08 17:20:52,323 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt
[2024-11-08 17:20:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 17:20:52,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 17:20:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-08 17:20:52,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-08 17:20:52,436 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 17:20:52,439 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 17:20:57,219 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live.
[2024-11-08 17:20:57,219 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 17:20:57,253 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 17:20:57,254 INFO L316 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-08 17:20:57,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:20:57 BoogieIcfgContainer
[2024-11-08 17:20:57,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 17:20:57,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 17:20:57,261 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 17:20:57,264 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 17:20:57,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:20:51" (1/3) ...
[2024-11-08 17:20:57,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656c903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:20:57, skipping insertion in model container
[2024-11-08 17:20:57,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:52" (2/3) ...
[2024-11-08 17:20:57,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656c903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:20:57, skipping insertion in model container
[2024-11-08 17:20:57,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:20:57" (3/3) ...
[2024-11-08 17:20:57,273 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-2a.c.cil.c
[2024-11-08 17:20:57,290 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 17:20:57,290 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2024-11-08 17:20:57,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 17:20:57,352 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;@518dba3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 17:20:57,352 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-11-08 17:20:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-08 17:20:57,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-08 17:20:57,364 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:20:57,364 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:20:57,365 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:20:57,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:20:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1912677092, now seen corresponding path program 1 times
[2024-11-08 17:20:57,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:20:57,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231692751]
[2024-11-08 17:20:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:20:57,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-08 17:20:57,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat
[2024-11-08 17:20:57,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-08 17:20:57,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2024-11-08 17:20:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:20:57,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-08 17:20:57,894 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:20:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 17:20:57,907 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:20:57,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:20:57,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231692751]
[2024-11-08 17:20:57,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231692751] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:20:57,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:20:57,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 17:20:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140321144]
[2024-11-08 17:20:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:20:57,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-08 17:20:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:20:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-08 17:20:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 17:20:57,941 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:20:57,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:20:57,976 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions.
[2024-11-08 17:20:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-08 17:20:57,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2024-11-08 17:20:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:20:57,988 INFO L225 Difference]: With dead ends: 157
[2024-11-08 17:20:57,989 INFO L226 Difference]: Without dead ends: 74
[2024-11-08 17:20:57,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 17:20:57,995 INFO L432 NwaCegarLoop]: 116 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, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:20:57,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:20:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2024-11-08 17:20:58,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74.
[2024-11-08 17:20:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-08 17:20:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions.
[2024-11-08 17:20:58,032 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7
[2024-11-08 17:20:58,032 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:20:58,032 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions.
[2024-11-08 17:20:58,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:20:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions.
[2024-11-08 17:20:58,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-08 17:20:58,033 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:20:58,034 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:20:58,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2024-11-08 17:20:58,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-08 17:20:58,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:20:58,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:20:58,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1912736674, now seen corresponding path program 1 times
[2024-11-08 17:20:58,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:20:58,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768136900]
[2024-11-08 17:20:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:20:58,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-08 17:20:58,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat
[2024-11-08 17:20:58,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-08 17:20:58,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2024-11-08 17:27:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:27:11,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 17:27:11,719 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:27:20,439 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 17:27:26,012 WARN L286 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 17:27:34,234 WARN L286 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 17:27:38,316 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false
[2024-11-08 17:27:54,714 WARN L286 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 17:28:00,297 WARN L286 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 17:28:06,462 WARN L286 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 17:28:18,716 WARN L286 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 17:28:26,927 WARN L286 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 17:28:35,034 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-11-08 17:28:39,143 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 7.0 5.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false
[2024-11-08 17:28:43,193 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 7.0 5.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true
[2024-11-08 17:28:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 17:28:43,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:28:43,194 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:28:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768136900]
[2024-11-08 17:28:43,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768136900] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:28:43,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:28:43,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 17:28:43,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465656013]
[2024-11-08 17:28:43,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:28:43,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 17:28:43,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:28:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 17:28:43,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42
[2024-11-08 17:28:43,199 INFO L87 Difference]: Start difference. First operand 74 states and 107 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:28:47,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 17:28:51,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 17:28:55,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 17:28:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:28:55,987 INFO L93 Difference]: Finished difference Result 74 states and 107 transitions.
[2024-11-08 17:28:55,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 17:28:55,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2024-11-08 17:28:55,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:28:55,989 INFO L225 Difference]: With dead ends: 74
[2024-11-08 17:28:55,989 INFO L226 Difference]: Without dead ends: 69
[2024-11-08 17:28:55,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42
[2024-11-08 17:28:55,991 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 101 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time
[2024-11-08 17:28:55,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 274 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 3 Unknown, 214 Unchecked, 12.8s Time]
[2024-11-08 17:28:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2024-11-08 17:28:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2024-11-08 17:28:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.5) internal successors, (87), 60 states have internal predecessors, (87), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-08 17:28:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 102 transitions.
[2024-11-08 17:28:56,007 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 102 transitions. Word has length 7
[2024-11-08 17:28:56,007 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:28:56,007 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 102 transitions.
[2024-11-08 17:28:56,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:28:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 102 transitions.
[2024-11-08 17:28:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2024-11-08 17:28:56,011 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:28:56,012 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:28:56,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2024-11-08 17:28:56,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-08 17:28:56,213 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:28:56,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:28:56,213 INFO L85 PathProgramCache]: Analyzing trace with hash -549432071, now seen corresponding path program 1 times
[2024-11-08 17:28:56,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:28:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029535325]
[2024-11-08 17:28:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:28:56,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:28:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:28:56,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:28:56,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 17:28:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:28:56,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 17:28:56,305 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:28:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:28:57,167 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:28:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:28:57,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:28:57,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029535325]
[2024-11-08 17:28:57,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029535325] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:28:57,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:28:57,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2024-11-08 17:28:57,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354313234]
[2024-11-08 17:28:57,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:28:57,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 17:28:57,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:28:57,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 17:28:57,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-08 17:28:57,707 INFO L87 Difference]: Start difference. First operand 69 states and 102 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:28:59,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:28:59,320 INFO L93 Difference]: Finished difference Result 146 states and 224 transitions.
[2024-11-08 17:28:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 17:28:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33
[2024-11-08 17:28:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:28:59,324 INFO L225 Difference]: With dead ends: 146
[2024-11-08 17:28:59,325 INFO L226 Difference]: Without dead ends: 101
[2024-11-08 17:28:59,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-08 17:28:59,327 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 31 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:28:59,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 597 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2024-11-08 17:28:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2024-11-08 17:28:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99.
[2024-11-08 17:28:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 87 states have internal predecessors, (123), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14)
[2024-11-08 17:28:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 148 transitions.
[2024-11-08 17:28:59,342 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 148 transitions. Word has length 33
[2024-11-08 17:28:59,343 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:28:59,343 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 148 transitions.
[2024-11-08 17:28:59,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:28:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 148 transitions.
[2024-11-08 17:28:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-08 17:28:59,345 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:28:59,345 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:28:59,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 17:28:59,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:28:59,550 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:28:59,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:28:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1528596169, now seen corresponding path program 1 times
[2024-11-08 17:28:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:28:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614952216]
[2024-11-08 17:28:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:28:59,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:28:59,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:28:59,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:28:59,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 17:28:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:28:59,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 17:28:59,632 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-08 17:29:00,969 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:29:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:29:01,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614952216]
[2024-11-08 17:29:01,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614952216] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:29:01,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:29:01,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 12
[2024-11-08 17:29:01,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905686205]
[2024-11-08 17:29:01,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:29:01,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 17:29:01,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 17:29:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2024-11-08 17:29:01,787 INFO L87 Difference]: Start difference. First operand 99 states and 148 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 17:29:04,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:04,617 INFO L93 Difference]: Finished difference Result 231 states and 366 transitions.
[2024-11-08 17:29:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 17:29:04,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37
[2024-11-08 17:29:04,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:04,620 INFO L225 Difference]: With dead ends: 231
[2024-11-08 17:29:04,620 INFO L226 Difference]: Without dead ends: 165
[2024-11-08 17:29:04,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2024-11-08 17:29:04,622 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 60 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:04,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1050 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2024-11-08 17:29:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2024-11-08 17:29:04,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 127.
[2024-11-08 17:29:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 106 states have internal predecessors, (146), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (33), 20 states have call predecessors, (33), 15 states have call successors, (33)
[2024-11-08 17:29:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 195 transitions.
[2024-11-08 17:29:04,648 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 195 transitions. Word has length 37
[2024-11-08 17:29:04,649 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:04,649 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 195 transitions.
[2024-11-08 17:29:04,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 17:29:04,649 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 195 transitions.
[2024-11-08 17:29:04,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 17:29:04,652 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:04,652 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:04,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 17:29:04,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:04,853 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:04,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1466896535, now seen corresponding path program 1 times
[2024-11-08 17:29:04,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:04,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222989110]
[2024-11-08 17:29:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:04,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:04,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:04,855 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:04,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 17:29:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:04,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:04,928 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-08 17:29:06,640 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:29:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:29:07,700 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:07,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222989110]
[2024-11-08 17:29:07,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222989110] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:29:07,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:29:07,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14
[2024-11-08 17:29:07,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186605377]
[2024-11-08 17:29:07,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:07,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 17:29:07,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:07,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 17:29:07,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182
[2024-11-08 17:29:07,703 INFO L87 Difference]: Start difference. First operand 127 states and 195 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:09,739 INFO L93 Difference]: Finished difference Result 257 states and 388 transitions.
[2024-11-08 17:29:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 17:29:09,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41
[2024-11-08 17:29:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:09,742 INFO L225 Difference]: With dead ends: 257
[2024-11-08 17:29:09,742 INFO L226 Difference]: Without dead ends: 202
[2024-11-08 17:29:09,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210
[2024-11-08 17:29:09,744 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 39 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:09,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 437 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2024-11-08 17:29:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states.
[2024-11-08 17:29:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 160.
[2024-11-08 17:29:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 139 states have (on average 1.3453237410071943) internal successors, (187), 133 states have internal predecessors, (187), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (33), 26 states have call predecessors, (33), 15 states have call successors, (33)
[2024-11-08 17:29:09,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 236 transitions.
[2024-11-08 17:29:09,764 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 236 transitions. Word has length 41
[2024-11-08 17:29:09,765 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:09,765 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 236 transitions.
[2024-11-08 17:29:09,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 236 transitions.
[2024-11-08 17:29:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 17:29:09,768 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:09,768 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:09,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-08 17:29:09,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:09,969 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:09,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1409638233, now seen corresponding path program 1 times
[2024-11-08 17:29:09,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:09,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465658220]
[2024-11-08 17:29:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:09,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:09,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:09,971 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:09,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 17:29:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:10,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:10,035 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:29:10,756 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:10,756 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:10,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465658220]
[2024-11-08 17:29:10,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465658220] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:10,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:10,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-08 17:29:10,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998654717]
[2024-11-08 17:29:10,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:10,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 17:29:10,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 17:29:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:29:10,759 INFO L87 Difference]: Start difference. First operand 160 states and 236 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:11,825 INFO L93 Difference]: Finished difference Result 259 states and 386 transitions.
[2024-11-08 17:29:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 17:29:11,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41
[2024-11-08 17:29:11,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:11,829 INFO L225 Difference]: With dead ends: 259
[2024-11-08 17:29:11,829 INFO L226 Difference]: Without dead ends: 198
[2024-11-08 17:29:11,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-08 17:29:11,835 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 33 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:11,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 517 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-11-08 17:29:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states.
[2024-11-08 17:29:11,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196.
[2024-11-08 17:29:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 171 states have (on average 1.3508771929824561) internal successors, (231), 167 states have internal predecessors, (231), 20 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (37), 30 states have call predecessors, (37), 19 states have call successors, (37)
[2024-11-08 17:29:11,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions.
[2024-11-08 17:29:11,875 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 41
[2024-11-08 17:29:11,875 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:11,875 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions.
[2024-11-08 17:29:11,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions.
[2024-11-08 17:29:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-08 17:29:11,881 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:11,882 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:11,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-08 17:29:12,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:12,086 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:12,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:12,086 INFO L85 PathProgramCache]: Analyzing trace with hash 728518674, now seen corresponding path program 1 times
[2024-11-08 17:29:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:12,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007826742]
[2024-11-08 17:29:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:12,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:12,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:12,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:12,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 17:29:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:12,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:12,159 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:29:12,506 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:12,506 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:12,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007826742]
[2024-11-08 17:29:12,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007826742] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:12,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 17:29:12,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435500857]
[2024-11-08 17:29:12,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:12,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 17:29:12,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 17:29:12,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:12,510 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:12,745 INFO L93 Difference]: Finished difference Result 317 states and 467 transitions.
[2024-11-08 17:29:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 17:29:12,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44
[2024-11-08 17:29:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:12,748 INFO L225 Difference]: With dead ends: 317
[2024-11-08 17:29:12,749 INFO L226 Difference]: Without dead ends: 251
[2024-11-08 17:29:12,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:12,751 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 15 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:12,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 344 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 17:29:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states.
[2024-11-08 17:29:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251.
[2024-11-08 17:29:12,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 224 states have (on average 1.3214285714285714) internal successors, (296), 220 states have internal predecessors, (296), 22 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (39), 32 states have call predecessors, (39), 21 states have call successors, (39)
[2024-11-08 17:29:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions.
[2024-11-08 17:29:12,771 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 44
[2024-11-08 17:29:12,771 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:12,771 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions.
[2024-11-08 17:29:12,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions.
[2024-11-08 17:29:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-08 17:29:12,774 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:12,774 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:12,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-08 17:29:12,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:12,979 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:12,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:12,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1141622334, now seen corresponding path program 1 times
[2024-11-08 17:29:12,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:12,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886990092]
[2024-11-08 17:29:12,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:12,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:12,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:12,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:12,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 17:29:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:13,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:13,045 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-11-08 17:29:13,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:13,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886990092]
[2024-11-08 17:29:13,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886990092] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:13,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:13,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 17:29:13,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432760445]
[2024-11-08 17:29:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:13,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 17:29:13,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:13,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 17:29:13,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:13,304 INFO L87 Difference]: Start difference. First operand 251 states and 357 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:29:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:13,708 INFO L93 Difference]: Finished difference Result 437 states and 618 transitions.
[2024-11-08 17:29:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 17:29:13,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44
[2024-11-08 17:29:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:13,711 INFO L225 Difference]: With dead ends: 437
[2024-11-08 17:29:13,712 INFO L226 Difference]: Without dead ends: 190
[2024-11-08 17:29:13,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 17:29:13,714 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 26 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:13,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 261 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 17:29:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states.
[2024-11-08 17:29:13,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178.
[2024-11-08 17:29:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 158 states have (on average 1.2848101265822784) internal successors, (203), 159 states have internal predecessors, (203), 14 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (25), 18 states have call predecessors, (25), 13 states have call successors, (25)
[2024-11-08 17:29:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 242 transitions.
[2024-11-08 17:29:13,728 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 242 transitions. Word has length 44
[2024-11-08 17:29:13,729 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:13,729 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 242 transitions.
[2024-11-08 17:29:13,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:29:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 242 transitions.
[2024-11-08 17:29:13,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 17:29:13,731 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:13,731 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:13,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-08 17:29:13,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:13,932 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:13,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:13,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1015579738, now seen corresponding path program 1 times
[2024-11-08 17:29:13,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:13,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447142616]
[2024-11-08 17:29:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:13,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:13,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:13,934 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:13,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 17:29:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:13,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:13,997 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:29:14,146 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:14,146 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:14,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447142616]
[2024-11-08 17:29:14,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447142616] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:14,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:14,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 17:29:14,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566422044]
[2024-11-08 17:29:14,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:14,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 17:29:14,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:14,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 17:29:14,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:14,149 INFO L87 Difference]: Start difference. First operand 178 states and 242 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:14,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:14,295 INFO L93 Difference]: Finished difference Result 189 states and 254 transitions.
[2024-11-08 17:29:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 17:29:14,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 17:29:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:14,297 INFO L225 Difference]: With dead ends: 189
[2024-11-08 17:29:14,297 INFO L226 Difference]: Without dead ends: 182
[2024-11-08 17:29:14,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:14,299 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:14,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:29:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2024-11-08 17:29:14,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182.
[2024-11-08 17:29:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 162 states have (on average 1.2777777777777777) internal successors, (207), 163 states have internal predecessors, (207), 14 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (25), 18 states have call predecessors, (25), 13 states have call successors, (25)
[2024-11-08 17:29:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 246 transitions.
[2024-11-08 17:29:14,311 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 246 transitions. Word has length 45
[2024-11-08 17:29:14,312 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:14,312 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 246 transitions.
[2024-11-08 17:29:14,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 246 transitions.
[2024-11-08 17:29:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 17:29:14,314 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:14,314 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:14,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-08 17:29:14,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:14,515 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:14,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:14,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1504380196, now seen corresponding path program 1 times
[2024-11-08 17:29:14,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:14,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548289957]
[2024-11-08 17:29:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:14,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:14,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:14,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:14,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 17:29:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:14,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:14,573 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:29:14,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:14,821 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:14,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548289957]
[2024-11-08 17:29:14,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548289957] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:14,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:14,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 17:29:14,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405753711]
[2024-11-08 17:29:14,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:14,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 17:29:14,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:14,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 17:29:14,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 17:29:14,824 INFO L87 Difference]: Start difference. First operand 182 states and 246 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:15,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:15,064 INFO L93 Difference]: Finished difference Result 189 states and 252 transitions.
[2024-11-08 17:29:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 17:29:15,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 17:29:15,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:15,067 INFO L225 Difference]: With dead ends: 189
[2024-11-08 17:29:15,068 INFO L226 Difference]: Without dead ends: 182
[2024-11-08 17:29:15,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:29:15,069 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 3 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:15,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 383 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 17:29:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2024-11-08 17:29:15,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178.
[2024-11-08 17:29:15,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 158 states have (on average 1.2658227848101267) internal successors, (200), 159 states have internal predecessors, (200), 14 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (25), 18 states have call predecessors, (25), 13 states have call successors, (25)
[2024-11-08 17:29:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 239 transitions.
[2024-11-08 17:29:15,081 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 239 transitions. Word has length 45
[2024-11-08 17:29:15,081 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:15,081 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 239 transitions.
[2024-11-08 17:29:15,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 239 transitions.
[2024-11-08 17:29:15,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 17:29:15,083 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:15,083 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:15,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-08 17:29:15,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:15,284 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:15,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2051114471, now seen corresponding path program 2 times
[2024-11-08 17:29:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:15,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485504520]
[2024-11-08 17:29:15,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 17:29:15,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:15,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:15,286 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:15,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-08 17:29:15,342 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-08 17:29:15,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:29:15,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:15,346 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 17:29:16,719 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:16,720 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:16,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485504520]
[2024-11-08 17:29:16,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485504520] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:16,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:16,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 17:29:16,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987772952]
[2024-11-08 17:29:16,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:16,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 17:29:16,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 17:29:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2024-11-08 17:29:16,722 INFO L87 Difference]: Start difference. First operand 178 states and 239 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:19,660 INFO L93 Difference]: Finished difference Result 304 states and 411 transitions.
[2024-11-08 17:29:19,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 17:29:19,660 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 17:29:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:19,662 INFO L225 Difference]: With dead ends: 304
[2024-11-08 17:29:19,662 INFO L226 Difference]: Without dead ends: 265
[2024-11-08 17:29:19,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240
[2024-11-08 17:29:19,664 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 57 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:19,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1184 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time]
[2024-11-08 17:29:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states.
[2024-11-08 17:29:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261.
[2024-11-08 17:29:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 234 states have (on average 1.2777777777777777) internal successors, (299), 233 states have internal predecessors, (299), 20 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (31), 27 states have call predecessors, (31), 19 states have call successors, (31)
[2024-11-08 17:29:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 350 transitions.
[2024-11-08 17:29:19,686 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 350 transitions. Word has length 45
[2024-11-08 17:29:19,687 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:19,687 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 350 transitions.
[2024-11-08 17:29:19,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 350 transitions.
[2024-11-08 17:29:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 17:29:19,689 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:19,689 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:19,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-08 17:29:19,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:19,890 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:19,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1132557739, now seen corresponding path program 1 times
[2024-11-08 17:29:19,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:19,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404508058]
[2024-11-08 17:29:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:19,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:19,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:19,892 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:19,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-08 17:29:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:19,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:19,954 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:29:20,589 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:29:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:29:21,063 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:21,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404508058]
[2024-11-08 17:29:21,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404508058] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:29:21,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:29:21,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2024-11-08 17:29:21,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795434109]
[2024-11-08 17:29:21,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:29:21,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 17:29:21,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:21,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 17:29:21,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:29:21,065 INFO L87 Difference]: Start difference. First operand 261 states and 350 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:29:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:22,261 INFO L93 Difference]: Finished difference Result 438 states and 613 transitions.
[2024-11-08 17:29:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 17:29:22,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45
[2024-11-08 17:29:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:22,264 INFO L225 Difference]: With dead ends: 438
[2024-11-08 17:29:22,264 INFO L226 Difference]: Without dead ends: 352
[2024-11-08 17:29:22,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-08 17:29:22,265 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 46 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:22,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 721 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-08 17:29:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states.
[2024-11-08 17:29:22,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 348.
[2024-11-08 17:29:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 311 states have (on average 1.2990353697749195) internal successors, (404), 313 states have internal predecessors, (404), 30 states have call successors, (30), 3 states have call predecessors, (30), 6 states have return successors, (41), 37 states have call predecessors, (41), 29 states have call successors, (41)
[2024-11-08 17:29:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 475 transitions.
[2024-11-08 17:29:22,293 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 475 transitions. Word has length 45
[2024-11-08 17:29:22,294 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:22,294 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 475 transitions.
[2024-11-08 17:29:22,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:29:22,294 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 475 transitions.
[2024-11-08 17:29:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 17:29:22,295 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:22,295 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:22,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-08 17:29:22,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:22,496 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:22,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1075299437, now seen corresponding path program 1 times
[2024-11-08 17:29:22,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090858416]
[2024-11-08 17:29:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:22,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:22,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:22,498 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:22,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-08 17:29:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:22,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:22,608 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:29:23,927 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:29:26,112 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:26,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090858416]
[2024-11-08 17:29:26,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090858416] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:29:26,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [394203256]
[2024-11-08 17:29:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:26,113 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 17:29:26,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 17:29:26,117 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 17:29:26,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process
[2024-11-08 17:29:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:26,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:26,225 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:29:26,762 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:29:27,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [394203256] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:29:27,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:29:27,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2024-11-08 17:29:27,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587278769]
[2024-11-08 17:29:27,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:29:27,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 17:29:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:27,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 17:29:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210
[2024-11-08 17:29:27,189 INFO L87 Difference]: Start difference. First operand 348 states and 475 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:29:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:29,591 INFO L93 Difference]: Finished difference Result 362 states and 487 transitions.
[2024-11-08 17:29:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-08 17:29:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45
[2024-11-08 17:29:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:29,595 INFO L225 Difference]: With dead ends: 362
[2024-11-08 17:29:29,595 INFO L226 Difference]: Without dead ends: 360
[2024-11-08 17:29:29,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306
[2024-11-08 17:29:29,596 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 48 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:29,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 920 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2024-11-08 17:29:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states.
[2024-11-08 17:29:29,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 356.
[2024-11-08 17:29:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 317 states have (on average 1.2933753943217665) internal successors, (410), 319 states have internal predecessors, (410), 30 states have call successors, (30), 5 states have call predecessors, (30), 8 states have return successors, (41), 37 states have call predecessors, (41), 29 states have call successors, (41)
[2024-11-08 17:29:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 481 transitions.
[2024-11-08 17:29:29,628 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 481 transitions. Word has length 45
[2024-11-08 17:29:29,629 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:29,629 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 481 transitions.
[2024-11-08 17:29:29,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:29:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 481 transitions.
[2024-11-08 17:29:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 17:29:29,630 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:29,631 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:29,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-11-08 17:29:29,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0
[2024-11-08 17:29:30,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt
[2024-11-08 17:29:30,034 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:30,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1246282599, now seen corresponding path program 1 times
[2024-11-08 17:29:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:30,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064460437]
[2024-11-08 17:29:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:30,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:30,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:30,036 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:30,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-08 17:29:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:30,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:30,103 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 17:29:30,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:30,863 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:30,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064460437]
[2024-11-08 17:29:30,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064460437] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:30,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:30,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 17:29:30,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931016976]
[2024-11-08 17:29:30,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:30,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:29:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:29:30,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:29:30,866 INFO L87 Difference]: Start difference. First operand 356 states and 481 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:31,840 INFO L93 Difference]: Finished difference Result 377 states and 506 transitions.
[2024-11-08 17:29:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:29:31,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 17:29:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:31,843 INFO L225 Difference]: With dead ends: 377
[2024-11-08 17:29:31,843 INFO L226 Difference]: Without dead ends: 375
[2024-11-08 17:29:31,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:29:31,844 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 3 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:31,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 475 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-08 17:29:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states.
[2024-11-08 17:29:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 364.
[2024-11-08 17:29:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 322 states have (on average 1.295031055900621) internal successors, (417), 326 states have internal predecessors, (417), 32 states have call successors, (32), 6 states have call predecessors, (32), 9 states have return successors, (43), 37 states have call predecessors, (43), 31 states have call successors, (43)
[2024-11-08 17:29:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 492 transitions.
[2024-11-08 17:29:31,877 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 492 transitions. Word has length 45
[2024-11-08 17:29:31,877 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:31,878 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 492 transitions.
[2024-11-08 17:29:31,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 492 transitions.
[2024-11-08 17:29:31,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 17:29:31,881 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:31,881 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:31,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-11-08 17:29:32,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:32,082 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:32,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:32,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1189024297, now seen corresponding path program 1 times
[2024-11-08 17:29:32,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:32,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273944062]
[2024-11-08 17:29:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:32,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:32,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:32,085 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:32,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-08 17:29:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:32,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:32,154 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 17:29:32,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:32,792 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:32,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273944062]
[2024-11-08 17:29:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273944062] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:32,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:32,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 17:29:32,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634217091]
[2024-11-08 17:29:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:32,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:29:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:32,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:29:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:29:32,794 INFO L87 Difference]: Start difference. First operand 364 states and 492 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:33,575 INFO L93 Difference]: Finished difference Result 370 states and 497 transitions.
[2024-11-08 17:29:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:29:33,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-11-08 17:29:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:33,578 INFO L225 Difference]: With dead ends: 370
[2024-11-08 17:29:33,578 INFO L226 Difference]: Without dead ends: 368
[2024-11-08 17:29:33,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:29:33,579 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:33,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 455 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-08 17:29:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states.
[2024-11-08 17:29:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 360.
[2024-11-08 17:29:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 320 states have (on average 1.290625) internal successors, (413), 322 states have internal predecessors, (413), 30 states have call successors, (30), 6 states have call predecessors, (30), 9 states have return successors, (41), 37 states have call predecessors, (41), 29 states have call successors, (41)
[2024-11-08 17:29:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 484 transitions.
[2024-11-08 17:29:33,601 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 484 transitions. Word has length 45
[2024-11-08 17:29:33,602 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:33,602 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 484 transitions.
[2024-11-08 17:29:33,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 484 transitions.
[2024-11-08 17:29:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2024-11-08 17:29:33,603 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:33,604 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:33,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-11-08 17:29:33,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:33,804 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:33,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:33,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1891124004, now seen corresponding path program 1 times
[2024-11-08 17:29:33,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:33,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056428228]
[2024-11-08 17:29:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:33,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:33,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:33,806 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:33,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-08 17:29:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:33,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:33,877 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:29:34,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:34,156 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056428228]
[2024-11-08 17:29:34,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056428228] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:34,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:34,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 17:29:34,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887894063]
[2024-11-08 17:29:34,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:34,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 17:29:34,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 17:29:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:34,157 INFO L87 Difference]: Start difference. First operand 360 states and 484 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:34,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:34,339 INFO L93 Difference]: Finished difference Result 592 states and 817 transitions.
[2024-11-08 17:29:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 17:29:34,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46
[2024-11-08 17:29:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:34,342 INFO L225 Difference]: With dead ends: 592
[2024-11-08 17:29:34,342 INFO L226 Difference]: Without dead ends: 500
[2024-11-08 17:29:34,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:34,343 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 28 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:34,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 289 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 17:29:34,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states.
[2024-11-08 17:29:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 413.
[2024-11-08 17:29:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 369 states have (on average 1.2899728997289972) internal successors, (476), 369 states have internal predecessors, (476), 34 states have call successors, (34), 6 states have call predecessors, (34), 9 states have return successors, (45), 41 states have call predecessors, (45), 33 states have call successors, (45)
[2024-11-08 17:29:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 555 transitions.
[2024-11-08 17:29:34,373 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 555 transitions. Word has length 46
[2024-11-08 17:29:34,374 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:34,374 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 555 transitions.
[2024-11-08 17:29:34,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 555 transitions.
[2024-11-08 17:29:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2024-11-08 17:29:34,375 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:34,377 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:34,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-11-08 17:29:34,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:34,582 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:34,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash 807338949, now seen corresponding path program 1 times
[2024-11-08 17:29:34,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:34,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856418376]
[2024-11-08 17:29:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:34,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:34,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:34,586 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:34,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-08 17:29:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:34,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:34,657 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:29:36,366 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:29:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:29:37,418 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856418376]
[2024-11-08 17:29:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856418376] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:29:37,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:29:37,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14
[2024-11-08 17:29:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896047986]
[2024-11-08 17:29:37,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:37,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:29:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:37,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:29:37,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2024-11-08 17:29:37,421 INFO L87 Difference]: Start difference. First operand 413 states and 555 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:39,100 INFO L93 Difference]: Finished difference Result 604 states and 829 transitions.
[2024-11-08 17:29:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:29:39,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49
[2024-11-08 17:29:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:39,103 INFO L225 Difference]: With dead ends: 604
[2024-11-08 17:29:39,104 INFO L226 Difference]: Without dead ends: 564
[2024-11-08 17:29:39,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2024-11-08 17:29:39,105 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 23 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:39,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 374 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2024-11-08 17:29:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states.
[2024-11-08 17:29:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 445.
[2024-11-08 17:29:39,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 395 states have (on average 1.2835443037974683) internal successors, (507), 395 states have internal predecessors, (507), 40 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (51), 47 states have call predecessors, (51), 39 states have call successors, (51)
[2024-11-08 17:29:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 598 transitions.
[2024-11-08 17:29:39,147 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 598 transitions. Word has length 49
[2024-11-08 17:29:39,148 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:39,148 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 598 transitions.
[2024-11-08 17:29:39,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 598 transitions.
[2024-11-08 17:29:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2024-11-08 17:29:39,149 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:39,150 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:39,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-11-08 17:29:39,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:39,350 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:39,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:39,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1508403527, now seen corresponding path program 1 times
[2024-11-08 17:29:39,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:39,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748356034]
[2024-11-08 17:29:39,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:39,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:39,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:39,353 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:39,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-11-08 17:29:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:39,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:39,411 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:29:39,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:39,582 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748356034]
[2024-11-08 17:29:39,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748356034] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:39,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:39,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 17:29:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888361164]
[2024-11-08 17:29:39,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:39,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 17:29:39,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:39,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 17:29:39,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:39,584 INFO L87 Difference]: Start difference. First operand 445 states and 598 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:39,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:39,704 INFO L93 Difference]: Finished difference Result 464 states and 619 transitions.
[2024-11-08 17:29:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 17:29:39,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49
[2024-11-08 17:29:39,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:39,707 INFO L225 Difference]: With dead ends: 464
[2024-11-08 17:29:39,707 INFO L226 Difference]: Without dead ends: 420
[2024-11-08 17:29:39,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:39,708 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:39,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:29:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states.
[2024-11-08 17:29:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420.
[2024-11-08 17:29:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 370 states have (on average 1.2864864864864864) internal successors, (476), 371 states have internal predecessors, (476), 40 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (49), 46 states have call predecessors, (49), 39 states have call successors, (49)
[2024-11-08 17:29:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 565 transitions.
[2024-11-08 17:29:39,737 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 565 transitions. Word has length 49
[2024-11-08 17:29:39,737 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:39,737 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 565 transitions.
[2024-11-08 17:29:39,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 565 transitions.
[2024-11-08 17:29:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 17:29:39,739 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:39,739 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:39,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2024-11-08 17:29:39,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:39,940 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:39,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:39,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2134474190, now seen corresponding path program 1 times
[2024-11-08 17:29:39,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:39,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828476846]
[2024-11-08 17:29:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:39,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:39,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:39,942 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:39,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-11-08 17:29:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:40,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:40,012 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 17:29:40,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:40,200 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:40,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828476846]
[2024-11-08 17:29:40,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828476846] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:40,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:40,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 17:29:40,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864210578]
[2024-11-08 17:29:40,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:40,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 17:29:40,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:40,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 17:29:40,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:40,202 INFO L87 Difference]: Start difference. First operand 420 states and 565 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:40,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:40,706 INFO L93 Difference]: Finished difference Result 545 states and 727 transitions.
[2024-11-08 17:29:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 17:29:40,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50
[2024-11-08 17:29:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:40,709 INFO L225 Difference]: With dead ends: 545
[2024-11-08 17:29:40,709 INFO L226 Difference]: Without dead ends: 514
[2024-11-08 17:29:40,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 17:29:40,710 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 41 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:40,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 253 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-08 17:29:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states.
[2024-11-08 17:29:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 424.
[2024-11-08 17:29:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 374 states have (on average 1.2807486631016043) internal successors, (479), 375 states have internal predecessors, (479), 40 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (49), 46 states have call predecessors, (49), 39 states have call successors, (49)
[2024-11-08 17:29:40,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 568 transitions.
[2024-11-08 17:29:40,741 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 568 transitions. Word has length 50
[2024-11-08 17:29:40,741 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:40,741 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 568 transitions.
[2024-11-08 17:29:40,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 568 transitions.
[2024-11-08 17:29:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 17:29:40,743 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:40,743 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:40,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2024-11-08 17:29:40,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:40,944 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:40,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash -566198360, now seen corresponding path program 1 times
[2024-11-08 17:29:40,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:40,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790388124]
[2024-11-08 17:29:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:40,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:40,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:40,952 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:40,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2024-11-08 17:29:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:41,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:41,019 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:29:42,588 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:42,588 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790388124]
[2024-11-08 17:29:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790388124] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:42,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:42,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 17:29:42,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749987196]
[2024-11-08 17:29:42,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:42,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 17:29:42,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:42,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 17:29:42,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2024-11-08 17:29:42,590 INFO L87 Difference]: Start difference. First operand 424 states and 568 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:46,257 INFO L93 Difference]: Finished difference Result 475 states and 636 transitions.
[2024-11-08 17:29:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 17:29:46,258 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50
[2024-11-08 17:29:46,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:46,259 INFO L225 Difference]: With dead ends: 475
[2024-11-08 17:29:46,259 INFO L226 Difference]: Without dead ends: 448
[2024-11-08 17:29:46,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272
[2024-11-08 17:29:46,260 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 72 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:46,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 823 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2024-11-08 17:29:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states.
[2024-11-08 17:29:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 442.
[2024-11-08 17:29:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 390 states have (on average 1.2794871794871794) internal successors, (499), 392 states have internal predecessors, (499), 42 states have call successors, (42), 6 states have call predecessors, (42), 9 states have return successors, (51), 48 states have call predecessors, (51), 41 states have call successors, (51)
[2024-11-08 17:29:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 592 transitions.
[2024-11-08 17:29:46,292 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 592 transitions. Word has length 50
[2024-11-08 17:29:46,292 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:46,292 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 592 transitions.
[2024-11-08 17:29:46,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 592 transitions.
[2024-11-08 17:29:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 17:29:46,294 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:46,294 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:46,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2024-11-08 17:29:46,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:46,495 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:46,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1821559572, now seen corresponding path program 1 times
[2024-11-08 17:29:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:46,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391590968]
[2024-11-08 17:29:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:46,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:46,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:46,498 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:46,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2024-11-08 17:29:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:46,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:46,569 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 17:29:46,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:46,862 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:46,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391590968]
[2024-11-08 17:29:46,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391590968] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:46,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:46,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 17:29:46,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753154983]
[2024-11-08 17:29:46,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:46,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 17:29:46,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:46,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 17:29:46,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 17:29:46,864 INFO L87 Difference]: Start difference. First operand 442 states and 592 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:47,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:47,599 INFO L93 Difference]: Finished difference Result 525 states and 701 transitions.
[2024-11-08 17:29:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:29:47,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50
[2024-11-08 17:29:47,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:47,603 INFO L225 Difference]: With dead ends: 525
[2024-11-08 17:29:47,603 INFO L226 Difference]: Without dead ends: 459
[2024-11-08 17:29:47,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:29:47,604 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 61 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:47,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 366 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-08 17:29:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states.
[2024-11-08 17:29:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 424.
[2024-11-08 17:29:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 374 states have (on average 1.2700534759358288) internal successors, (475), 375 states have internal predecessors, (475), 40 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (49), 46 states have call predecessors, (49), 39 states have call successors, (49)
[2024-11-08 17:29:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 564 transitions.
[2024-11-08 17:29:47,635 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 564 transitions. Word has length 50
[2024-11-08 17:29:47,635 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:47,636 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 564 transitions.
[2024-11-08 17:29:47,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:47,636 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 564 transitions.
[2024-11-08 17:29:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-11-08 17:29:47,637 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:47,637 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:47,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2024-11-08 17:29:47,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:47,838 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:47,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:47,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1251141765, now seen corresponding path program 1 times
[2024-11-08 17:29:47,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:47,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035306411]
[2024-11-08 17:29:47,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:47,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:47,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:47,841 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:47,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2024-11-08 17:29:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:47,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:47,907 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:29:49,577 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:49,577 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:49,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035306411]
[2024-11-08 17:29:49,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035306411] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:49,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:49,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 17:29:49,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314017187]
[2024-11-08 17:29:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:49,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 17:29:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 17:29:49,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2024-11-08 17:29:49,580 INFO L87 Difference]: Start difference. First operand 424 states and 564 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:52,969 INFO L93 Difference]: Finished difference Result 502 states and 668 transitions.
[2024-11-08 17:29:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-08 17:29:52,972 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51
[2024-11-08 17:29:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:52,975 INFO L225 Difference]: With dead ends: 502
[2024-11-08 17:29:52,975 INFO L226 Difference]: Without dead ends: 463
[2024-11-08 17:29:52,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2024-11-08 17:29:52,977 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 48 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:52,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 786 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time]
[2024-11-08 17:29:52,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states.
[2024-11-08 17:29:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 450.
[2024-11-08 17:29:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 396 states have (on average 1.2575757575757576) internal successors, (498), 399 states have internal predecessors, (498), 44 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (52), 49 states have call predecessors, (52), 42 states have call successors, (52)
[2024-11-08 17:29:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 594 transitions.
[2024-11-08 17:29:53,011 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 594 transitions. Word has length 51
[2024-11-08 17:29:53,011 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:53,011 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 594 transitions.
[2024-11-08 17:29:53,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 594 transitions.
[2024-11-08 17:29:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-11-08 17:29:53,013 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:53,014 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:53,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2024-11-08 17:29:53,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:53,214 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:53,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1393357641, now seen corresponding path program 1 times
[2024-11-08 17:29:53,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:53,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795641437]
[2024-11-08 17:29:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:53,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:53,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:53,216 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:53,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2024-11-08 17:29:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:53,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:53,289 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:29:53,908 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:53,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795641437]
[2024-11-08 17:29:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795641437] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:53,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:53,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-08 17:29:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043683365]
[2024-11-08 17:29:53,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:53,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 17:29:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 17:29:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:29:53,910 INFO L87 Difference]: Start difference. First operand 450 states and 594 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:55,831 INFO L93 Difference]: Finished difference Result 587 states and 781 transitions.
[2024-11-08 17:29:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 17:29:55,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51
[2024-11-08 17:29:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:55,834 INFO L225 Difference]: With dead ends: 587
[2024-11-08 17:29:55,834 INFO L226 Difference]: Without dead ends: 563
[2024-11-08 17:29:55,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:29:55,835 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 27 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:55,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 531 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2024-11-08 17:29:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states.
[2024-11-08 17:29:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 467.
[2024-11-08 17:29:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 409 states have (on average 1.2665036674816625) internal successors, (518), 414 states have internal predecessors, (518), 48 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (56), 52 states have call predecessors, (56), 46 states have call successors, (56)
[2024-11-08 17:29:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 622 transitions.
[2024-11-08 17:29:55,873 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 622 transitions. Word has length 51
[2024-11-08 17:29:55,873 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:55,873 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 622 transitions.
[2024-11-08 17:29:55,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:55,880 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 622 transitions.
[2024-11-08 17:29:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-11-08 17:29:55,881 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:55,881 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:55,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2024-11-08 17:29:56,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:56,082 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:56,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:56,083 INFO L85 PathProgramCache]: Analyzing trace with hash -609523299, now seen corresponding path program 1 times
[2024-11-08 17:29:56,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:56,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576301018]
[2024-11-08 17:29:56,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:56,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:56,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:56,086 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:56,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2024-11-08 17:29:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:56,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:56,152 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:29:56,452 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:56,452 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:56,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576301018]
[2024-11-08 17:29:56,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576301018] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:56,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:56,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 17:29:56,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564370113]
[2024-11-08 17:29:56,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:56,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 17:29:56,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:56,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 17:29:56,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:56,454 INFO L87 Difference]: Start difference. First operand 467 states and 622 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:56,616 INFO L93 Difference]: Finished difference Result 514 states and 681 transitions.
[2024-11-08 17:29:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 17:29:56,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51
[2024-11-08 17:29:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:56,618 INFO L225 Difference]: With dead ends: 514
[2024-11-08 17:29:56,619 INFO L226 Difference]: Without dead ends: 467
[2024-11-08 17:29:56,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:56,619 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 26 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:56,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 281 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:29:56,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states.
[2024-11-08 17:29:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467.
[2024-11-08 17:29:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 409 states have (on average 1.215158924205379) internal successors, (497), 414 states have internal predecessors, (497), 48 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (56), 52 states have call predecessors, (56), 46 states have call successors, (56)
[2024-11-08 17:29:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 601 transitions.
[2024-11-08 17:29:56,662 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 601 transitions. Word has length 51
[2024-11-08 17:29:56,662 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:56,663 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 601 transitions.
[2024-11-08 17:29:56,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 601 transitions.
[2024-11-08 17:29:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-11-08 17:29:56,664 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:56,664 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:56,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2024-11-08 17:29:56,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:56,865 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:56,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:56,866 INFO L85 PathProgramCache]: Analyzing trace with hash 977915423, now seen corresponding path program 1 times
[2024-11-08 17:29:56,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:56,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059821887]
[2024-11-08 17:29:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:56,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:56,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:56,868 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:56,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2024-11-08 17:29:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:56,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:56,939 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:29:57,710 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:29:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:29:58,491 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:58,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059821887]
[2024-11-08 17:29:58,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059821887] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:29:58,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:29:58,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2024-11-08 17:29:58,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725355601]
[2024-11-08 17:29:58,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:29:58,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 17:29:58,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 17:29:58,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:29:58,493 INFO L87 Difference]: Start difference. First operand 467 states and 601 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:29:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:59,287 INFO L93 Difference]: Finished difference Result 495 states and 634 transitions.
[2024-11-08 17:29:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 17:29:59,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51
[2024-11-08 17:29:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:59,291 INFO L225 Difference]: With dead ends: 495
[2024-11-08 17:29:59,291 INFO L226 Difference]: Without dead ends: 459
[2024-11-08 17:29:59,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-08 17:29:59,292 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 20 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:59,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 571 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-08 17:29:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states.
[2024-11-08 17:29:59,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 443.
[2024-11-08 17:29:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 385 states have (on average 1.2181818181818183) internal successors, (469), 391 states have internal predecessors, (469), 48 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (56), 51 states have call predecessors, (56), 46 states have call successors, (56)
[2024-11-08 17:29:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 573 transitions.
[2024-11-08 17:29:59,328 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 573 transitions. Word has length 51
[2024-11-08 17:29:59,328 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:59,328 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 573 transitions.
[2024-11-08 17:29:59,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:29:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 573 transitions.
[2024-11-08 17:29:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2024-11-08 17:29:59,330 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:59,330 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:59,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2024-11-08 17:29:59,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:59,531 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:29:59,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:29:59,531 INFO L85 PathProgramCache]: Analyzing trace with hash -317311561, now seen corresponding path program 1 times
[2024-11-08 17:29:59,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:29:59,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281481568]
[2024-11-08 17:29:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:29:59,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:29:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:29:59,533 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:29:59,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2024-11-08 17:29:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:29:59,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:29:59,601 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:29:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:29:59,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:29:59,742 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:29:59,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281481568]
[2024-11-08 17:29:59,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281481568] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:29:59,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:29:59,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 17:29:59,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141245079]
[2024-11-08 17:29:59,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:29:59,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 17:29:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:29:59,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 17:29:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:59,745 INFO L87 Difference]: Start difference. First operand 443 states and 573 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:59,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:29:59,880 INFO L93 Difference]: Finished difference Result 452 states and 581 transitions.
[2024-11-08 17:29:59,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 17:29:59,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53
[2024-11-08 17:29:59,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:29:59,883 INFO L225 Difference]: With dead ends: 452
[2024-11-08 17:29:59,883 INFO L226 Difference]: Without dead ends: 405
[2024-11-08 17:29:59,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:29:59,884 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:29:59,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:29:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states.
[2024-11-08 17:29:59,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 368.
[2024-11-08 17:29:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 320 states have (on average 1.215625) internal successors, (389), 325 states have internal predecessors, (389), 38 states have call successors, (38), 6 states have call predecessors, (38), 9 states have return successors, (43), 40 states have call predecessors, (43), 36 states have call successors, (43)
[2024-11-08 17:29:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 470 transitions.
[2024-11-08 17:29:59,913 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 470 transitions. Word has length 53
[2024-11-08 17:29:59,913 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:29:59,914 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 470 transitions.
[2024-11-08 17:29:59,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:29:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 470 transitions.
[2024-11-08 17:29:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2024-11-08 17:29:59,915 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:29:59,915 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:29:59,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2024-11-08 17:30:00,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:00,116 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:30:00,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:30:00,116 INFO L85 PathProgramCache]: Analyzing trace with hash 685169853, now seen corresponding path program 1 times
[2024-11-08 17:30:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:30:00,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112241313]
[2024-11-08 17:30:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:00,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:00,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:30:00,119 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:30:00,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2024-11-08 17:30:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:00,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:00,191 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 17:30:01,689 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:30:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:30:02,706 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:30:02,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112241313]
[2024-11-08 17:30:02,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112241313] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:30:02,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:30:02,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14
[2024-11-08 17:30:02,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888469604]
[2024-11-08 17:30:02,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:30:02,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:30:02,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:30:02,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:30:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2024-11-08 17:30:02,709 INFO L87 Difference]: Start difference. First operand 368 states and 470 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:30:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:30:04,335 INFO L93 Difference]: Finished difference Result 449 states and 569 transitions.
[2024-11-08 17:30:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 17:30:04,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53
[2024-11-08 17:30:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:30:04,338 INFO L225 Difference]: With dead ends: 449
[2024-11-08 17:30:04,338 INFO L226 Difference]: Without dead ends: 388
[2024-11-08 17:30:04,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240
[2024-11-08 17:30:04,339 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 24 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:30:04,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 373 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2024-11-08 17:30:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states.
[2024-11-08 17:30:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 358.
[2024-11-08 17:30:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 310 states have (on average 1.2129032258064516) internal successors, (376), 314 states have internal predecessors, (376), 39 states have call successors, (39), 6 states have call predecessors, (39), 8 states have return successors, (40), 40 states have call predecessors, (40), 37 states have call successors, (40)
[2024-11-08 17:30:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 455 transitions.
[2024-11-08 17:30:04,374 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 455 transitions. Word has length 53
[2024-11-08 17:30:04,374 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:30:04,374 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 455 transitions.
[2024-11-08 17:30:04,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:30:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 455 transitions.
[2024-11-08 17:30:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-08 17:30:04,376 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:30:04,376 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:30:04,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0
[2024-11-08 17:30:04,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:04,580 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:30:04,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:30:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1804015042, now seen corresponding path program 1 times
[2024-11-08 17:30:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:30:04,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077243378]
[2024-11-08 17:30:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:04,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:04,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:30:04,582 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:30:04,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2024-11-08 17:30:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:04,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:04,652 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 17:30:06,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:30:06,985 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:30:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077243378]
[2024-11-08 17:30:06,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077243378] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:30:06,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:30:06,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2024-11-08 17:30:06,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158404478]
[2024-11-08 17:30:06,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:30:06,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 17:30:06,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:30:06,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 17:30:06,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2024-11-08 17:30:06,987 INFO L87 Difference]: Start difference. First operand 358 states and 455 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 17:30:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:30:11,553 INFO L93 Difference]: Finished difference Result 444 states and 563 transitions.
[2024-11-08 17:30:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-08 17:30:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55
[2024-11-08 17:30:11,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:30:11,557 INFO L225 Difference]: With dead ends: 444
[2024-11-08 17:30:11,557 INFO L226 Difference]: Without dead ends: 399
[2024-11-08 17:30:11,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306
[2024-11-08 17:30:11,558 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 91 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2024-11-08 17:30:11,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1273 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2024-11-08 17:30:11,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states.
[2024-11-08 17:30:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 358.
[2024-11-08 17:30:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 310 states have (on average 1.2032258064516128) internal successors, (373), 314 states have internal predecessors, (373), 39 states have call successors, (39), 6 states have call predecessors, (39), 8 states have return successors, (40), 40 states have call predecessors, (40), 37 states have call successors, (40)
[2024-11-08 17:30:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 452 transitions.
[2024-11-08 17:30:11,593 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 452 transitions. Word has length 55
[2024-11-08 17:30:11,593 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:30:11,593 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 452 transitions.
[2024-11-08 17:30:11,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 17:30:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 452 transitions.
[2024-11-08 17:30:11,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-08 17:30:11,594 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:30:11,595 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:30:11,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2024-11-08 17:30:11,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:11,795 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:30:11,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:30:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1661799166, now seen corresponding path program 1 times
[2024-11-08 17:30:11,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:30:11,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284343028]
[2024-11-08 17:30:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:11,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:11,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:30:11,797 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:30:11,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2024-11-08 17:30:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:11,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:11,861 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:30:13,621 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:30:14,743 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:30:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284343028]
[2024-11-08 17:30:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284343028] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:30:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1183909973]
[2024-11-08 17:30:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:14,744 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 17:30:14,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 17:30:14,748 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 17:30:14,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process
[2024-11-08 17:30:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:14,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:14,859 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:30:15,740 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:30:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1183909973] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:30:16,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:30:16,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2024-11-08 17:30:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135035321]
[2024-11-08 17:30:16,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:30:16,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 17:30:16,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:30:16,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 17:30:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156
[2024-11-08 17:30:16,105 INFO L87 Difference]: Start difference. First operand 358 states and 452 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 17:30:18,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:30:18,424 INFO L93 Difference]: Finished difference Result 439 states and 557 transitions.
[2024-11-08 17:30:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-08 17:30:18,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55
[2024-11-08 17:30:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:30:18,426 INFO L225 Difference]: With dead ends: 439
[2024-11-08 17:30:18,427 INFO L226 Difference]: Without dead ends: 399
[2024-11-08 17:30:18,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272
[2024-11-08 17:30:18,428 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 45 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2024-11-08 17:30:18,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 921 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2024-11-08 17:30:18,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states.
[2024-11-08 17:30:18,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 358.
[2024-11-08 17:30:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 310 states have (on average 1.196774193548387) internal successors, (371), 314 states have internal predecessors, (371), 39 states have call successors, (39), 6 states have call predecessors, (39), 8 states have return successors, (40), 40 states have call predecessors, (40), 37 states have call successors, (40)
[2024-11-08 17:30:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 450 transitions.
[2024-11-08 17:30:18,460 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 450 transitions. Word has length 55
[2024-11-08 17:30:18,460 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:30:18,460 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 450 transitions.
[2024-11-08 17:30:18,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 17:30:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 450 transitions.
[2024-11-08 17:30:18,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-08 17:30:18,461 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:30:18,462 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:30:18,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0
[2024-11-08 17:30:18,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2024-11-08 17:30:18,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:18,862 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:30:18,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:30:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash 212141896, now seen corresponding path program 1 times
[2024-11-08 17:30:18,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:30:18,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471021462]
[2024-11-08 17:30:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:18,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:18,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:30:18,866 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:30:18,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2024-11-08 17:30:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:18,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:18,943 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:30:20,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:30:20,598 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:30:20,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471021462]
[2024-11-08 17:30:20,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471021462] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:30:20,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:30:20,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 17:30:20,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463149819]
[2024-11-08 17:30:20,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:30:20,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 17:30:20,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:30:20,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 17:30:20,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-11-08 17:30:20,599 INFO L87 Difference]: Start difference. First operand 358 states and 450 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:30:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:30:23,502 INFO L93 Difference]: Finished difference Result 430 states and 538 transitions.
[2024-11-08 17:30:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 17:30:23,503 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55
[2024-11-08 17:30:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:30:23,505 INFO L225 Difference]: With dead ends: 430
[2024-11-08 17:30:23,505 INFO L226 Difference]: Without dead ends: 376
[2024-11-08 17:30:23,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272
[2024-11-08 17:30:23,507 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 55 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:30:23,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 844 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2024-11-08 17:30:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states.
[2024-11-08 17:30:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 358.
[2024-11-08 17:30:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 310 states have (on average 1.1870967741935483) internal successors, (368), 314 states have internal predecessors, (368), 39 states have call successors, (39), 6 states have call predecessors, (39), 8 states have return successors, (40), 40 states have call predecessors, (40), 37 states have call successors, (40)
[2024-11-08 17:30:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 447 transitions.
[2024-11-08 17:30:23,540 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 447 transitions. Word has length 55
[2024-11-08 17:30:23,540 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:30:23,540 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 447 transitions.
[2024-11-08 17:30:23,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:30:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 447 transitions.
[2024-11-08 17:30:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-08 17:30:23,541 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:30:23,541 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:30:23,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2024-11-08 17:30:23,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:23,748 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:30:23,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:30:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash 69926020, now seen corresponding path program 1 times
[2024-11-08 17:30:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:30:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840388454]
[2024-11-08 17:30:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:23,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:23,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:30:23,751 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:30:23,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2024-11-08 17:30:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:23,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:23,830 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 17:30:30,904 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:30:32,761 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:30:32,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840388454]
[2024-11-08 17:30:32,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840388454] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:30:32,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1400925909]
[2024-11-08 17:30:32,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:32,762 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 17:30:32,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 17:30:32,763 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 17:30:32,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process
[2024-11-08 17:30:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:32,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:32,884 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 17:30:33,384 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:30:33,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1400925909] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:30:33,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:30:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10
[2024-11-08 17:30:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301320049]
[2024-11-08 17:30:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:30:33,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 17:30:33,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:30:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 17:30:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2024-11-08 17:30:33,385 INFO L87 Difference]: Start difference. First operand 358 states and 447 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:30:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:30:34,655 INFO L93 Difference]: Finished difference Result 378 states and 469 transitions.
[2024-11-08 17:30:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 17:30:34,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55
[2024-11-08 17:30:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:30:34,656 INFO L225 Difference]: With dead ends: 378
[2024-11-08 17:30:34,656 INFO L226 Difference]: Without dead ends: 376
[2024-11-08 17:30:34,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240
[2024-11-08 17:30:34,657 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 10 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:30:34,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 509 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-08 17:30:34,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states.
[2024-11-08 17:30:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 365.
[2024-11-08 17:30:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 313 states have (on average 1.1853035143769968) internal successors, (371), 320 states have internal predecessors, (371), 42 states have call successors, (42), 7 states have call predecessors, (42), 9 states have return successors, (43), 40 states have call predecessors, (43), 40 states have call successors, (43)
[2024-11-08 17:30:34,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 456 transitions.
[2024-11-08 17:30:34,688 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 456 transitions. Word has length 55
[2024-11-08 17:30:34,688 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:30:34,688 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 456 transitions.
[2024-11-08 17:30:34,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:30:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 456 transitions.
[2024-11-08 17:30:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2024-11-08 17:30:34,690 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:30:34,690 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:30:34,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0
[2024-11-08 17:30:34,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0
[2024-11-08 17:30:35,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt
[2024-11-08 17:30:35,091 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:30:35,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:30:35,091 INFO L85 PathProgramCache]: Analyzing trace with hash -225389381, now seen corresponding path program 1 times
[2024-11-08 17:30:35,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:30:35,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949113540]
[2024-11-08 17:30:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:35,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:35,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:30:35,094 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:30:35,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2024-11-08 17:30:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:35,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:35,165 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 17:30:37,302 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:30:37,302 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:30:37,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949113540]
[2024-11-08 17:30:37,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949113540] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:30:37,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:30:37,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2024-11-08 17:30:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979314962]
[2024-11-08 17:30:37,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:30:37,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 17:30:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:30:37,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 17:30:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156
[2024-11-08 17:30:37,304 INFO L87 Difference]: Start difference. First operand 365 states and 456 transitions. Second operand has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 17:30:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:30:41,226 INFO L93 Difference]: Finished difference Result 419 states and 522 transitions.
[2024-11-08 17:30:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-08 17:30:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56
[2024-11-08 17:30:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:30:41,229 INFO L225 Difference]: With dead ends: 419
[2024-11-08 17:30:41,229 INFO L226 Difference]: Without dead ends: 372
[2024-11-08 17:30:41,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272
[2024-11-08 17:30:41,230 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 77 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:30:41,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 990 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2024-11-08 17:30:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states.
[2024-11-08 17:30:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 340.
[2024-11-08 17:30:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 291 states have (on average 1.1855670103092784) internal successors, (345), 297 states have internal predecessors, (345), 39 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40)
[2024-11-08 17:30:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 424 transitions.
[2024-11-08 17:30:41,266 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 424 transitions. Word has length 56
[2024-11-08 17:30:41,267 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:30:41,267 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 424 transitions.
[2024-11-08 17:30:41,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 17:30:41,267 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 424 transitions.
[2024-11-08 17:30:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2024-11-08 17:30:41,269 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:30:41,269 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:30:41,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0
[2024-11-08 17:30:41,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:41,470 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:30:41,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:30:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash -339114241, now seen corresponding path program 1 times
[2024-11-08 17:30:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:30:41,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408955975]
[2024-11-08 17:30:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:41,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:41,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:30:41,473 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:30:41,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2024-11-08 17:30:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:41,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:41,548 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:30:42,504 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:30:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:30:43,898 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:30:43,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408955975]
[2024-11-08 17:30:43,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408955975] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:30:43,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:30:43,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2024-11-08 17:30:43,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393529329]
[2024-11-08 17:30:43,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:30:43,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 17:30:43,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:30:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 17:30:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2024-11-08 17:30:43,900 INFO L87 Difference]: Start difference. First operand 340 states and 424 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 17:30:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:30:45,476 INFO L93 Difference]: Finished difference Result 391 states and 486 transitions.
[2024-11-08 17:30:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 17:30:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 56
[2024-11-08 17:30:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:30:45,478 INFO L225 Difference]: With dead ends: 391
[2024-11-08 17:30:45,478 INFO L226 Difference]: Without dead ends: 340
[2024-11-08 17:30:45,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240
[2024-11-08 17:30:45,479 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 60 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-11-08 17:30:45,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1005 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-11-08 17:30:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states.
[2024-11-08 17:30:45,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 316.
[2024-11-08 17:30:45,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 270 states have (on average 1.1851851851851851) internal successors, (320), 275 states have internal predecessors, (320), 36 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37)
[2024-11-08 17:30:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 393 transitions.
[2024-11-08 17:30:45,506 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 393 transitions. Word has length 56
[2024-11-08 17:30:45,506 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:30:45,507 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 393 transitions.
[2024-11-08 17:30:45,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 17:30:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 393 transitions.
[2024-11-08 17:30:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2024-11-08 17:30:45,508 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:30:45,508 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:30:45,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2024-11-08 17:30:45,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:45,709 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:30:45,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:30:45,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1966150645, now seen corresponding path program 1 times
[2024-11-08 17:30:45,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:30:45,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79750308]
[2024-11-08 17:30:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:45,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:45,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:30:45,711 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:30:45,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2024-11-08 17:30:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:45,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:45,777 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:30:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:30:46,766 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:30:46,766 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:30:46,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79750308]
[2024-11-08 17:30:46,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79750308] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:30:46,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:30:46,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2024-11-08 17:30:46,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127200375]
[2024-11-08 17:30:46,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:30:46,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 17:30:46,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:30:46,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 17:30:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2024-11-08 17:30:46,768 INFO L87 Difference]: Start difference. First operand 316 states and 393 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:30:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:30:48,475 INFO L93 Difference]: Finished difference Result 345 states and 423 transitions.
[2024-11-08 17:30:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-08 17:30:48,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56
[2024-11-08 17:30:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:30:48,477 INFO L225 Difference]: With dead ends: 345
[2024-11-08 17:30:48,477 INFO L226 Difference]: Without dead ends: 264
[2024-11-08 17:30:48,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182
[2024-11-08 17:30:48,478 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 37 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-11-08 17:30:48,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 655 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-11-08 17:30:48,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states.
[2024-11-08 17:30:48,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 248.
[2024-11-08 17:30:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 212 states have (on average 1.1745283018867925) internal successors, (249), 217 states have internal predecessors, (249), 26 states have call successors, (26), 7 states have call predecessors, (26), 9 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27)
[2024-11-08 17:30:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 302 transitions.
[2024-11-08 17:30:48,503 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 302 transitions. Word has length 56
[2024-11-08 17:30:48,503 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:30:48,503 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 302 transitions.
[2024-11-08 17:30:48,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:30:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 302 transitions.
[2024-11-08 17:30:48,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2024-11-08 17:30:48,505 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:30:48,505 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:30:48,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2024-11-08 17:30:48,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:48,705 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:30:48,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:30:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1852425785, now seen corresponding path program 1 times
[2024-11-08 17:30:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:30:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125227183]
[2024-11-08 17:30:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:30:48,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:30:48,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:30:48,707 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:30:48,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2024-11-08 17:30:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:30:48,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 17:30:48,777 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:31:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 17:31:04,994 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:31:10,967 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:31:10,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125227183]
[2024-11-08 17:31:10,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125227183] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:31:10,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [916466611]
[2024-11-08 17:31:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:31:10,968 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 17:31:10,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 17:31:10,969 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 17:31:10,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process
[2024-11-08 17:31:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:31:11,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 17:31:11,095 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:31:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 17:31:23,908 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:31:23,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [916466611] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:31:23,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:31:23,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 12
[2024-11-08 17:31:23,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632592354]
[2024-11-08 17:31:23,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:31:23,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 17:31:23,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:31:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 17:31:23,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=236, Unknown=5, NotChecked=0, Total=306
[2024-11-08 17:31:23,909 INFO L87 Difference]: Start difference. First operand 248 states and 302 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:31:27,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2024-11-08 17:31:36,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2024-11-08 17:31:41,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2024-11-08 17:31:43,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2024-11-08 17:31:47,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2024-11-08 17:31:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:31:48,111 INFO L93 Difference]: Finished difference Result 265 states and 318 transitions.
[2024-11-08 17:31:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-08 17:31:48,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56
[2024-11-08 17:31:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:31:48,112 INFO L225 Difference]: With dead ends: 265
[2024-11-08 17:31:48,112 INFO L226 Difference]: Without dead ends: 263
[2024-11-08 17:31:48,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=96, Invalid=319, Unknown=5, NotChecked=0, Total=420
[2024-11-08 17:31:48,113 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 12 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:31:48,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 508 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 4 Unknown, 0 Unchecked, 20.3s Time]
[2024-11-08 17:31:48,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states.
[2024-11-08 17:31:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 245.
[2024-11-08 17:31:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 212 states have (on average 1.1745283018867925) internal successors, (249), 214 states have internal predecessors, (249), 23 states have call successors, (23), 7 states have call predecessors, (23), 9 states have return successors, (24), 24 states have call predecessors, (24), 21 states have call successors, (24)
[2024-11-08 17:31:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 296 transitions.
[2024-11-08 17:31:48,134 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 296 transitions. Word has length 56
[2024-11-08 17:31:48,134 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:31:48,134 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 296 transitions.
[2024-11-08 17:31:48,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:31:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 296 transitions.
[2024-11-08 17:31:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2024-11-08 17:31:48,136 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:31:48,136 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:31:48,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0
[2024-11-08 17:31:48,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2024-11-08 17:31:48,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:31:48,537 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:31:48,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:31:48,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1667634451, now seen corresponding path program 1 times
[2024-11-08 17:31:48,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:31:48,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830467069]
[2024-11-08 17:31:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:31:48,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:31:48,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:31:48,539 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:31:48,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2024-11-08 17:31:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:31:48,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 17:31:48,609 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:31:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 17:31:48,989 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:31:48,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:31:48,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830467069]
[2024-11-08 17:31:48,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830467069] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:31:48,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:31:48,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 17:31:48,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406297199]
[2024-11-08 17:31:48,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:31:48,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:31:48,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:31:48,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:31:48,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:31:48,991 INFO L87 Difference]: Start difference. First operand 245 states and 296 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2024-11-08 17:31:49,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:31:49,369 INFO L93 Difference]: Finished difference Result 257 states and 308 transitions.
[2024-11-08 17:31:49,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:31:49,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61
[2024-11-08 17:31:49,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:31:49,370 INFO L225 Difference]: With dead ends: 257
[2024-11-08 17:31:49,370 INFO L226 Difference]: Without dead ends: 255
[2024-11-08 17:31:49,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:31:49,371 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 8 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:31:49,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 459 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 17:31:49,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states.
[2024-11-08 17:31:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 251.
[2024-11-08 17:31:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 216 states have (on average 1.1712962962962963) internal successors, (253), 219 states have internal predecessors, (253), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (25), 24 states have call predecessors, (25), 22 states have call successors, (25)
[2024-11-08 17:31:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 302 transitions.
[2024-11-08 17:31:49,390 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 302 transitions. Word has length 61
[2024-11-08 17:31:49,390 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:31:49,390 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 302 transitions.
[2024-11-08 17:31:49,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2024-11-08 17:31:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 302 transitions.
[2024-11-08 17:31:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2024-11-08 17:31:49,391 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:31:49,392 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:31:49,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0
[2024-11-08 17:31:49,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:31:49,592 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:31:49,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:31:49,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1651005049, now seen corresponding path program 1 times
[2024-11-08 17:31:49,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:31:49,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294466944]
[2024-11-08 17:31:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:31:49,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:31:49,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:31:49,594 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:31:49,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2024-11-08 17:31:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:31:49,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 17:31:49,670 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:31:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-08 17:31:50,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:31:50,014 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:31:50,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294466944]
[2024-11-08 17:31:50,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294466944] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:31:50,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:31:50,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 17:31:50,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979770803]
[2024-11-08 17:31:50,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:31:50,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:31:50,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:31:50,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:31:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:31:50,016 INFO L87 Difference]: Start difference. First operand 251 states and 302 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2024-11-08 17:31:50,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:31:50,401 INFO L93 Difference]: Finished difference Result 272 states and 323 transitions.
[2024-11-08 17:31:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:31:50,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61
[2024-11-08 17:31:50,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:31:50,403 INFO L225 Difference]: With dead ends: 272
[2024-11-08 17:31:50,403 INFO L226 Difference]: Without dead ends: 270
[2024-11-08 17:31:50,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:31:50,403 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 19 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:31:50,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 538 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 17:31:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states.
[2024-11-08 17:31:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 255.
[2024-11-08 17:31:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 219 states have (on average 1.1689497716894977) internal successors, (256), 222 states have internal predecessors, (256), 24 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (25), 24 states have call predecessors, (25), 22 states have call successors, (25)
[2024-11-08 17:31:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 305 transitions.
[2024-11-08 17:31:50,429 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 305 transitions. Word has length 61
[2024-11-08 17:31:50,429 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:31:50,429 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 305 transitions.
[2024-11-08 17:31:50,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2024-11-08 17:31:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 305 transitions.
[2024-11-08 17:31:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-11-08 17:31:50,431 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:31:50,431 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:31:50,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0
[2024-11-08 17:31:50,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:31:50,632 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:31:50,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:31:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash 970484103, now seen corresponding path program 1 times
[2024-11-08 17:31:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:31:50,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995182991]
[2024-11-08 17:31:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:31:50,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:31:50,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:31:50,634 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:31:50,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2024-11-08 17:31:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:31:50,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-08 17:31:50,714 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:31:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2024-11-08 17:31:55,823 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:31:55,823 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:31:55,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995182991]
[2024-11-08 17:31:55,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995182991] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:31:55,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:31:55,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2024-11-08 17:31:55,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941115093]
[2024-11-08 17:31:55,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:31:55,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-08 17:31:55,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:31:55,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-08 17:31:55,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210
[2024-11-08 17:31:55,825 INFO L87 Difference]: Start difference. First operand 255 states and 305 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:32:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:32:03,674 INFO L93 Difference]: Finished difference Result 368 states and 446 transitions.
[2024-11-08 17:32:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-11-08 17:32:03,675 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 66
[2024-11-08 17:32:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:32:03,676 INFO L225 Difference]: With dead ends: 368
[2024-11-08 17:32:03,676 INFO L226 Difference]: Without dead ends: 338
[2024-11-08 17:32:03,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240
[2024-11-08 17:32:03,677 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 30 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time
[2024-11-08 17:32:03,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 968 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time]
[2024-11-08 17:32:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states.
[2024-11-08 17:32:03,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 273.
[2024-11-08 17:32:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 234 states have (on average 1.170940170940171) internal successors, (274), 237 states have internal predecessors, (274), 27 states have call successors, (27), 9 states have call predecessors, (27), 11 states have return successors, (28), 27 states have call predecessors, (28), 25 states have call successors, (28)
[2024-11-08 17:32:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 329 transitions.
[2024-11-08 17:32:03,710 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 329 transitions. Word has length 66
[2024-11-08 17:32:03,711 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:32:03,711 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 329 transitions.
[2024-11-08 17:32:03,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:32:03,711 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 329 transitions.
[2024-11-08 17:32:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-11-08 17:32:03,713 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:32:03,713 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:32:03,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0
[2024-11-08 17:32:03,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:32:03,914 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:32:03,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:32:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1401255159, now seen corresponding path program 1 times
[2024-11-08 17:32:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:32:03,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420581026]
[2024-11-08 17:32:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:32:03,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:32:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:32:03,916 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:32:03,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2024-11-08 17:32:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:32:04,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-08 17:32:04,036 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:32:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2024-11-08 17:32:09,548 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:32:09,548 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:32:09,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420581026]
[2024-11-08 17:32:09,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420581026] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:32:09,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:32:09,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2024-11-08 17:32:09,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189645930]
[2024-11-08 17:32:09,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:32:09,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 17:32:09,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:32:09,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 17:32:09,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2024-11-08 17:32:09,550 INFO L87 Difference]: Start difference. First operand 273 states and 329 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:32:20,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2024-11-08 17:32:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:32:24,905 INFO L93 Difference]: Finished difference Result 372 states and 453 transitions.
[2024-11-08 17:32:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-08 17:32:24,906 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 66
[2024-11-08 17:32:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:32:24,908 INFO L225 Difference]: With dead ends: 372
[2024-11-08 17:32:24,908 INFO L226 Difference]: Without dead ends: 342
[2024-11-08 17:32:24,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=66, Invalid=353, Unknown=1, NotChecked=0, Total=420
[2024-11-08 17:32:24,910 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 28 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2024-11-08 17:32:24,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 766 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 448 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time]
[2024-11-08 17:32:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states.
[2024-11-08 17:32:24,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 265.
[2024-11-08 17:32:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 227 states have (on average 1.1674008810572687) internal successors, (265), 230 states have internal predecessors, (265), 26 states have call successors, (26), 9 states have call predecessors, (26), 11 states have return successors, (27), 26 states have call predecessors, (27), 24 states have call successors, (27)
[2024-11-08 17:32:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 318 transitions.
[2024-11-08 17:32:24,951 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 318 transitions. Word has length 66
[2024-11-08 17:32:24,951 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:32:24,952 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 318 transitions.
[2024-11-08 17:32:24,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:32:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 318 transitions.
[2024-11-08 17:32:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2024-11-08 17:32:24,953 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:32:24,953 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:32:24,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0
[2024-11-08 17:32:25,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:32:25,155 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:32:25,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:32:25,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1769850328, now seen corresponding path program 1 times
[2024-11-08 17:32:25,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:32:25,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713998939]
[2024-11-08 17:32:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:32:25,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:32:25,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:32:25,158 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:32:25,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2024-11-08 17:32:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:32:25,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 17:32:25,253 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:32:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-08 17:32:26,812 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:32:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-08 17:32:27,702 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:32:27,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713998939]
[2024-11-08 17:32:27,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713998939] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:32:27,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:32:27,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2024-11-08 17:32:27,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272504029]
[2024-11-08 17:32:27,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:32:27,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 17:32:27,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:32:27,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 17:32:27,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2024-11-08 17:32:27,704 INFO L87 Difference]: Start difference. First operand 265 states and 318 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)
[2024-11-08 17:32:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:32:30,576 INFO L93 Difference]: Finished difference Result 343 states and 409 transitions.
[2024-11-08 17:32:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-11-08 17:32:30,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 67
[2024-11-08 17:32:30,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:32:30,578 INFO L225 Difference]: With dead ends: 343
[2024-11-08 17:32:30,578 INFO L226 Difference]: Without dead ends: 324
[2024-11-08 17:32:30,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240
[2024-11-08 17:32:30,579 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 46 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:32:30,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 796 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2024-11-08 17:32:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states.
[2024-11-08 17:32:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 296.
[2024-11-08 17:32:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 255 states have (on average 1.1568627450980393) internal successors, (295), 259 states have internal predecessors, (295), 29 states have call successors, (29), 9 states have call predecessors, (29), 11 states have return successors, (30), 29 states have call predecessors, (30), 27 states have call successors, (30)
[2024-11-08 17:32:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 354 transitions.
[2024-11-08 17:32:30,601 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 354 transitions. Word has length 67
[2024-11-08 17:32:30,601 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:32:30,601 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 354 transitions.
[2024-11-08 17:32:30,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)
[2024-11-08 17:32:30,602 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 354 transitions.
[2024-11-08 17:32:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2024-11-08 17:32:30,602 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:32:30,602 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:32:30,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0
[2024-11-08 17:32:30,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:32:30,803 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:32:30,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:32:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2008290126, now seen corresponding path program 1 times
[2024-11-08 17:32:30,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:32:30,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129567176]
[2024-11-08 17:32:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:32:30,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:32:30,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:32:30,805 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:32:30,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2024-11-08 17:32:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:32:30,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-08 17:32:30,885 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:32:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2024-11-08 17:32:37,951 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:32:40,045 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:32:40,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129567176]
[2024-11-08 17:32:40,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129567176] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:32:40,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [920027785]
[2024-11-08 17:32:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:32:40,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 17:32:40,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 17:32:40,048 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 17:32:40,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process
[2024-11-08 17:32:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:32:40,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-08 17:32:40,226 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:32:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2024-11-08 17:32:49,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:32:49,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [920027785] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:32:49,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:32:49,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 18
[2024-11-08 17:32:49,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434485683]
[2024-11-08 17:32:49,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:32:49,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 17:32:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:32:49,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 17:32:49,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=404, Unknown=2, NotChecked=0, Total=462
[2024-11-08 17:32:49,125 INFO L87 Difference]: Start difference. First operand 296 states and 354 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:32:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:32:56,792 INFO L93 Difference]: Finished difference Result 405 states and 491 transitions.
[2024-11-08 17:32:56,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 17:32:56,793 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 67
[2024-11-08 17:32:56,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:32:56,795 INFO L225 Difference]: With dead ends: 405
[2024-11-08 17:32:56,795 INFO L226 Difference]: Without dead ends: 375
[2024-11-08 17:32:56,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=61, Invalid=443, Unknown=2, NotChecked=0, Total=506
[2024-11-08 17:32:56,797 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 30 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:32:56,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 903 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2024-11-08 17:32:56,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states.
[2024-11-08 17:32:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 306.
[2024-11-08 17:32:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 264 states have (on average 1.1666666666666667) internal successors, (308), 268 states have internal predecessors, (308), 30 states have call successors, (30), 9 states have call predecessors, (30), 11 states have return successors, (31), 30 states have call predecessors, (31), 28 states have call successors, (31)
[2024-11-08 17:32:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 369 transitions.
[2024-11-08 17:32:56,840 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 369 transitions. Word has length 67
[2024-11-08 17:32:56,841 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:32:56,841 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 369 transitions.
[2024-11-08 17:32:56,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:32:56,841 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 369 transitions.
[2024-11-08 17:32:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2024-11-08 17:32:56,842 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:32:56,842 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:32:56,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0
[2024-11-08 17:32:57,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0
[2024-11-08 17:32:57,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:32:57,243 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:32:57,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:32:57,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1777204080, now seen corresponding path program 1 times
[2024-11-08 17:32:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:32:57,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340906647]
[2024-11-08 17:32:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:32:57,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:32:57,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:32:57,245 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:32:57,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2024-11-08 17:32:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:32:57,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 17:32:57,322 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:32:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2024-11-08 17:32:58,490 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:32:58,490 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:32:58,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340906647]
[2024-11-08 17:32:58,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340906647] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:32:58,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:32:58,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-08 17:32:58,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967447557]
[2024-11-08 17:32:58,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:32:58,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 17:32:58,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:32:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 17:32:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-08 17:32:58,492 INFO L87 Difference]: Start difference. First operand 306 states and 369 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:33:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:33:01,571 INFO L93 Difference]: Finished difference Result 378 states and 454 transitions.
[2024-11-08 17:33:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 17:33:01,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 67
[2024-11-08 17:33:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:33:01,574 INFO L225 Difference]: With dead ends: 378
[2024-11-08 17:33:01,574 INFO L226 Difference]: Without dead ends: 348
[2024-11-08 17:33:01,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2024-11-08 17:33:01,575 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 29 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time
[2024-11-08 17:33:01,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 598 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time]
[2024-11-08 17:33:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states.
[2024-11-08 17:33:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 271.
[2024-11-08 17:33:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 234 states have (on average 1.1452991452991452) internal successors, (268), 238 states have internal predecessors, (268), 25 states have call successors, (25), 9 states have call predecessors, (25), 11 states have return successors, (26), 25 states have call predecessors, (26), 23 states have call successors, (26)
[2024-11-08 17:33:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 319 transitions.
[2024-11-08 17:33:01,610 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 319 transitions. Word has length 67
[2024-11-08 17:33:01,611 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:33:01,611 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 319 transitions.
[2024-11-08 17:33:01,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:33:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 319 transitions.
[2024-11-08 17:33:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2024-11-08 17:33:01,612 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:33:01,612 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:33:01,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0
[2024-11-08 17:33:01,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:01,813 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:33:01,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:33:01,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1517399324, now seen corresponding path program 1 times
[2024-11-08 17:33:01,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:33:01,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802348167]
[2024-11-08 17:33:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:33:01,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:01,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:33:01,817 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:33:01,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2024-11-08 17:33:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:33:01,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 17:33:01,923 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:33:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2024-11-08 17:33:05,650 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:33:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2024-11-08 17:33:12,907 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:33:12,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802348167]
[2024-11-08 17:33:12,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802348167] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:33:12,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:33:12,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26
[2024-11-08 17:33:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086697479]
[2024-11-08 17:33:12,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:33:12,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2024-11-08 17:33:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:33:12,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2024-11-08 17:33:12,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650
[2024-11-08 17:33:12,909 INFO L87 Difference]: Start difference. First operand 271 states and 319 transitions. Second operand has 26 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2024-11-08 17:33:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:33:30,129 INFO L93 Difference]: Finished difference Result 376 states and 442 transitions.
[2024-11-08 17:33:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2024-11-08 17:33:30,130 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 67
[2024-11-08 17:33:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:33:30,132 INFO L225 Difference]: With dead ends: 376
[2024-11-08 17:33:30,132 INFO L226 Difference]: Without dead ends: 356
[2024-11-08 17:33:30,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190
[2024-11-08 17:33:30,134 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 120 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time
[2024-11-08 17:33:30,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 826 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time]
[2024-11-08 17:33:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states.
[2024-11-08 17:33:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 270.
[2024-11-08 17:33:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 233 states have (on average 1.1330472103004292) internal successors, (264), 237 states have internal predecessors, (264), 25 states have call successors, (25), 9 states have call predecessors, (25), 11 states have return successors, (26), 25 states have call predecessors, (26), 23 states have call successors, (26)
[2024-11-08 17:33:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 315 transitions.
[2024-11-08 17:33:30,168 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 315 transitions. Word has length 67
[2024-11-08 17:33:30,168 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:33:30,168 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 315 transitions.
[2024-11-08 17:33:30,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2024-11-08 17:33:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 315 transitions.
[2024-11-08 17:33:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2024-11-08 17:33:30,170 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:33:30,170 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:33:30,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0
[2024-11-08 17:33:30,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:30,370 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:33:30,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:33:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash -899188034, now seen corresponding path program 1 times
[2024-11-08 17:33:30,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:33:30,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019765081]
[2024-11-08 17:33:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:33:30,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:30,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:33:30,372 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:33:30,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2024-11-08 17:33:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:33:30,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 17:33:30,446 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:33:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-08 17:33:30,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:33:30,787 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:33:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019765081]
[2024-11-08 17:33:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019765081] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:33:30,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:33:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 17:33:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310403955]
[2024-11-08 17:33:30,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:33:30,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:33:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:33:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:33:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:33:30,788 INFO L87 Difference]: Start difference. First operand 270 states and 315 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2024-11-08 17:33:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:33:31,191 INFO L93 Difference]: Finished difference Result 291 states and 336 transitions.
[2024-11-08 17:33:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:33:31,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69
[2024-11-08 17:33:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:33:31,193 INFO L225 Difference]: With dead ends: 291
[2024-11-08 17:33:31,193 INFO L226 Difference]: Without dead ends: 277
[2024-11-08 17:33:31,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:33:31,194 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 13 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:33:31,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 496 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 17:33:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states.
[2024-11-08 17:33:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 235.
[2024-11-08 17:33:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 200 states have (on average 1.14) internal successors, (228), 206 states have internal predecessors, (228), 23 states have call successors, (23), 9 states have call predecessors, (23), 11 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24)
[2024-11-08 17:33:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 275 transitions.
[2024-11-08 17:33:31,225 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 275 transitions. Word has length 69
[2024-11-08 17:33:31,225 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:33:31,226 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 275 transitions.
[2024-11-08 17:33:31,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2024-11-08 17:33:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 275 transitions.
[2024-11-08 17:33:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2024-11-08 17:33:31,226 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:33:31,227 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:33:31,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0
[2024-11-08 17:33:31,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:31,427 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:33:31,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:33:31,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1496112838, now seen corresponding path program 1 times
[2024-11-08 17:33:31,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:33:31,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939073235]
[2024-11-08 17:33:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:33:31,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:33:31,429 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:33:31,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2024-11-08 17:33:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:33:31,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 17:33:31,504 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:33:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-08 17:33:31,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:33:31,839 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:33:31,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939073235]
[2024-11-08 17:33:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939073235] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:33:31,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:33:31,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 17:33:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814824007]
[2024-11-08 17:33:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:33:31,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:33:31,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:33:31,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:33:31,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:33:31,841 INFO L87 Difference]: Start difference. First operand 235 states and 275 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2024-11-08 17:33:32,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:33:32,223 INFO L93 Difference]: Finished difference Result 252 states and 291 transitions.
[2024-11-08 17:33:32,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:33:32,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69
[2024-11-08 17:33:32,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:33:32,225 INFO L225 Difference]: With dead ends: 252
[2024-11-08 17:33:32,225 INFO L226 Difference]: Without dead ends: 173
[2024-11-08 17:33:32,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:33:32,226 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 13 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:33:32,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 489 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 17:33:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states.
[2024-11-08 17:33:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 150.
[2024-11-08 17:33:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.171875) internal successors, (150), 132 states have internal predecessors, (150), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-08 17:33:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions.
[2024-11-08 17:33:32,245 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 69
[2024-11-08 17:33:32,245 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:33:32,245 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions.
[2024-11-08 17:33:32,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2024-11-08 17:33:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions.
[2024-11-08 17:33:32,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2024-11-08 17:33:32,246 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:33:32,246 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:33:32,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0
[2024-11-08 17:33:32,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:32,446 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:33:32,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:33:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 91204395, now seen corresponding path program 1 times
[2024-11-08 17:33:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:33:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582823628]
[2024-11-08 17:33:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:33:32,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:32,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:33:32,448 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:33:32,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2024-11-08 17:33:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:33:32,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 17:33:32,527 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:33:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:33:33,564 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:33:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 17:33:34,325 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:33:34,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582823628]
[2024-11-08 17:33:34,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582823628] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:33:34,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:33:34,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2024-11-08 17:33:34,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122223807]
[2024-11-08 17:33:34,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:33:34,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 17:33:34,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:33:34,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 17:33:34,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2024-11-08 17:33:34,327 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:33:35,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:33:35,849 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions.
[2024-11-08 17:33:35,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-08 17:33:35,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68
[2024-11-08 17:33:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:33:35,850 INFO L225 Difference]: With dead ends: 179
[2024-11-08 17:33:35,850 INFO L226 Difference]: Without dead ends: 126
[2024-11-08 17:33:35,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156
[2024-11-08 17:33:35,851 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 9 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:33:35,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 617 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-08 17:33:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2024-11-08 17:33:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126.
[2024-11-08 17:33:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 110 states have internal predecessors, (123), 12 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2024-11-08 17:33:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions.
[2024-11-08 17:33:35,867 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 68
[2024-11-08 17:33:35,867 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:33:35,868 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions.
[2024-11-08 17:33:35,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:33:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions.
[2024-11-08 17:33:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2024-11-08 17:33:35,868 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:33:35,868 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:33:35,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0
[2024-11-08 17:33:36,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:36,069 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:33:36,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:33:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1706797641, now seen corresponding path program 1 times
[2024-11-08 17:33:36,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:33:36,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084179620]
[2024-11-08 17:33:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:33:36,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:36,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:33:36,071 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:33:36,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2024-11-08 17:33:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:33:36,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:33:36,149 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:33:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-08 17:33:36,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:33:36,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:33:36,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084179620]
[2024-11-08 17:33:36,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084179620] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:33:36,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:33:36,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 17:33:36,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54502277]
[2024-11-08 17:33:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:33:36,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 17:33:36,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:33:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 17:33:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:33:36,560 INFO L87 Difference]: Start difference. First operand 126 states and 146 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:33:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:33:36,672 INFO L93 Difference]: Finished difference Result 154 states and 174 transitions.
[2024-11-08 17:33:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 17:33:36,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70
[2024-11-08 17:33:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:33:36,673 INFO L225 Difference]: With dead ends: 154
[2024-11-08 17:33:36,673 INFO L226 Difference]: Without dead ends: 108
[2024-11-08 17:33:36,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 17:33:36,674 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 13 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:33:36,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 238 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:33:36,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2024-11-08 17:33:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108.
[2024-11-08 17:33:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 94 states have internal predecessors, (103), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-08 17:33:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions.
[2024-11-08 17:33:36,685 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 70
[2024-11-08 17:33:36,685 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:33:36,685 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions.
[2024-11-08 17:33:36,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:33:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions.
[2024-11-08 17:33:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2024-11-08 17:33:36,686 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:33:36,686 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:33:36,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0
[2024-11-08 17:33:36,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:36,887 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:33:36,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:33:36,887 INFO L85 PathProgramCache]: Analyzing trace with hash -537185657, now seen corresponding path program 1 times
[2024-11-08 17:33:36,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:33:36,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166217575]
[2024-11-08 17:33:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:33:36,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:36,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:33:36,890 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:33:36,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2024-11-08 17:33:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:33:36,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 17:33:36,973 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:33:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 17:33:38,406 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:33:39,970 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:33:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166217575]
[2024-11-08 17:33:39,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166217575] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:33:39,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849309891]
[2024-11-08 17:33:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:33:39,971 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 17:33:39,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 17:33:39,972 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 17:33:39,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process
[2024-11-08 17:33:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:33:40,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 17:33:40,087 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:33:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-11-08 17:33:40,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:33:40,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [849309891] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:33:40,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:33:40,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13
[2024-11-08 17:33:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178868777]
[2024-11-08 17:33:40,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:33:40,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 17:33:40,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:33:40,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 17:33:40,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306
[2024-11-08 17:33:40,990 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:33:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:33:41,747 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions.
[2024-11-08 17:33:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:33:41,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70
[2024-11-08 17:33:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:33:41,748 INFO L225 Difference]: With dead ends: 157
[2024-11-08 17:33:41,748 INFO L226 Difference]: Without dead ends: 109
[2024-11-08 17:33:41,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342
[2024-11-08 17:33:41,749 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 20 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-08 17:33:41,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 282 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-08 17:33:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2024-11-08 17:33:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108.
[2024-11-08 17:33:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 92 states have (on average 1.108695652173913) internal successors, (102), 94 states have internal predecessors, (102), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-08 17:33:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions.
[2024-11-08 17:33:41,761 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 70
[2024-11-08 17:33:41,762 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:33:41,762 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions.
[2024-11-08 17:33:41,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:33:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions.
[2024-11-08 17:33:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2024-11-08 17:33:41,763 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:33:41,763 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:33:41,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (55)] Forceful destruction successful, exit code 0
[2024-11-08 17:33:41,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0
[2024-11-08 17:33:42,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:42,164 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:33:42,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:33:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 164414217, now seen corresponding path program 1 times
[2024-11-08 17:33:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:33:42,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134369306]
[2024-11-08 17:33:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:33:42,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:42,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:33:42,166 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:33:42,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2024-11-08 17:33:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:33:42,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 17:33:42,253 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:33:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:33:43,070 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:33:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-08 17:33:43,917 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:33:43,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134369306]
[2024-11-08 17:33:43,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134369306] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:33:43,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:33:43,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2024-11-08 17:33:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538304589]
[2024-11-08 17:33:43,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:33:43,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 17:33:43,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:33:43,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 17:33:43,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-08 17:33:43,919 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:33:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:33:44,658 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions.
[2024-11-08 17:33:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 17:33:44,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 70
[2024-11-08 17:33:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:33:44,659 INFO L225 Difference]: With dead ends: 120
[2024-11-08 17:33:44,660 INFO L226 Difference]: Without dead ends: 69
[2024-11-08 17:33:44,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2024-11-08 17:33:44,660 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-08 17:33:44,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 406 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-08 17:33:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2024-11-08 17:33:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2024-11-08 17:33:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 57 states have internal predecessors, (62), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-08 17:33:44,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions.
[2024-11-08 17:33:44,668 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 70
[2024-11-08 17:33:44,668 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:33:44,668 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions.
[2024-11-08 17:33:44,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2024-11-08 17:33:44,668 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions.
[2024-11-08 17:33:44,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2024-11-08 17:33:44,669 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:33:44,669 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:33:44,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0
[2024-11-08 17:33:44,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:44,870 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:33:44,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:33:44,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1862373464, now seen corresponding path program 1 times
[2024-11-08 17:33:44,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:33:44,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916598538]
[2024-11-08 17:33:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:33:44,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:33:44,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:33:44,873 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:33:44,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2024-11-08 17:33:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:33:44,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-08 17:33:44,977 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:33:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-11-08 17:33:56,974 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:34:01,472 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:34:01,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916598538]
[2024-11-08 17:34:01,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916598538] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:34:01,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1516624952]
[2024-11-08 17:34:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:34:01,473 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 17:34:01,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 17:34:01,475 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 17:34:01,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process
[2024-11-08 17:34:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:34:01,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-08 17:34:01,655 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:34:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2024-11-08 17:34:11,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:34:11,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1516624952] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:34:11,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:34:11,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 14
[2024-11-08 17:34:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057947587]
[2024-11-08 17:34:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:34:11,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 17:34:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:34:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 17:34:11,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=433, Unknown=2, NotChecked=0, Total=506
[2024-11-08 17:34:11,166 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 17:34:15,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2024-11-08 17:34:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:34:29,271 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions.
[2024-11-08 17:34:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-08 17:34:29,272 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74
[2024-11-08 17:34:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:34:29,272 INFO L225 Difference]: With dead ends: 97
[2024-11-08 17:34:29,273 INFO L226 Difference]: Without dead ends: 81
[2024-11-08 17:34:29,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=139, Invalid=787, Unknown=4, NotChecked=0, Total=930
[2024-11-08 17:34:29,273 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 14 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:34:29,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 592 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time]
[2024-11-08 17:34:29,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2024-11-08 17:34:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76.
[2024-11-08 17:34:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 62 states have (on average 1.096774193548387) internal successors, (68), 63 states have internal predecessors, (68), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-08 17:34:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions.
[2024-11-08 17:34:29,282 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 74
[2024-11-08 17:34:29,282 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:34:29,283 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions.
[2024-11-08 17:34:29,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 17:34:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions.
[2024-11-08 17:34:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2024-11-08 17:34:29,283 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:34:29,284 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:34:29,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (58)] Forceful destruction successful, exit code 0
[2024-11-08 17:34:29,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0
[2024-11-08 17:34:29,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:34:29,684 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:34:29,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:34:29,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1018367962, now seen corresponding path program 1 times
[2024-11-08 17:34:29,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:34:29,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359729692]
[2024-11-08 17:34:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:34:29,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:34:29,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:34:29,686 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:34:29,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2024-11-08 17:34:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:34:29,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 33 conjuncts are in the unsatisfiable core
[2024-11-08 17:34:29,782 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:34:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-11-08 17:34:35,716 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:34:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-11-08 17:34:45,787 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:34:45,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359729692]
[2024-11-08 17:34:45,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359729692] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:34:45,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:34:45,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29
[2024-11-08 17:34:45,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220645069]
[2024-11-08 17:34:45,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:34:45,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-11-08 17:34:45,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:34:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-11-08 17:34:45,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812
[2024-11-08 17:34:45,790 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 27 states have internal predecessors, (66), 8 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9)
[2024-11-08 17:34:50,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 17:35:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:35:16,235 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions.
[2024-11-08 17:35:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2024-11-08 17:35:16,236 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 27 states have internal predecessors, (66), 8 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 74
[2024-11-08 17:35:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:35:16,238 INFO L225 Difference]: With dead ends: 108
[2024-11-08 17:35:16,238 INFO L226 Difference]: Without dead ends: 69
[2024-11-08 17:35:16,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=310, Invalid=1022, Unknown=0, NotChecked=0, Total=1332
[2024-11-08 17:35:16,239 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 19 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time
[2024-11-08 17:35:16,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 736 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time]
[2024-11-08 17:35:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2024-11-08 17:35:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2024-11-08 17:35:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 57 states have internal predecessors, (60), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-08 17:35:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions.
[2024-11-08 17:35:16,251 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 74
[2024-11-08 17:35:16,251 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:35:16,251 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions.
[2024-11-08 17:35:16,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 27 states have internal predecessors, (66), 8 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9)
[2024-11-08 17:35:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions.
[2024-11-08 17:35:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-08 17:35:16,252 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:35:16,252 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:35:16,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0
[2024-11-08 17:35:16,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:35:16,453 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:35:16,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:35:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2034190205, now seen corresponding path program 1 times
[2024-11-08 17:35:16,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:35:16,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129417320]
[2024-11-08 17:35:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:35:16,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:35:16,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:35:16,456 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:35:16,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2024-11-08 17:35:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:35:16,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-08 17:35:16,567 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:35:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2024-11-08 17:35:18,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:35:18,499 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:35:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129417320]
[2024-11-08 17:35:18,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129417320] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:35:18,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:35:18,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2024-11-08 17:35:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987525111]
[2024-11-08 17:35:18,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:35:18,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 17:35:18,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:35:18,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 17:35:18,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2024-11-08 17:35:18,501 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 17:35:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:35:20,859 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions.
[2024-11-08 17:35:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 17:35:20,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 75
[2024-11-08 17:35:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:35:20,861 INFO L225 Difference]: With dead ends: 69
[2024-11-08 17:35:20,861 INFO L226 Difference]: Without dead ends: 0
[2024-11-08 17:35:20,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156
[2024-11-08 17:35:20,862 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:35:20,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 341 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-08 17:35:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-08 17:35:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-08 17:35:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:35:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-08 17:35:20,864 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75
[2024-11-08 17:35:20,864 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:35:20,864 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-08 17:35:20,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2024-11-08 17:35:20,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-08 17:35:20,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-08 17:35:20,868 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining)
[2024-11-08 17:35:20,868 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2024-11-08 17:35:20,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0
[2024-11-08 17:35:21,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f68b91-d5a9-4920-ab97-01de239a3bee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:35:21,071 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:35:21,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.